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Color Calibration

Introduction

Calibration generates curves that adjust for the difference between the actual toner
densities (measurements) and the response expected by the output profile.

• Measurements represent the actual color behavior of the copier.

• Calibration sets are sets of measurements.

• A calibration target that describes the expected behavior of the copier is

contained in each output profile.

Once you have calibrated the ColorPASS with ColorWise Pro Tools or with AutoCal2
from the ColorPASS Control Panel, a calibration set is stored on the ColorPASS. This
calibration set will be used when it is associated with an output profile. Every output
profile has an associated calibration set. If you have not specified one, the calibration
set associated with the default output profile is used.

N

OTE

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Changing calibration has the potential to affect all jobs for all users, so you may

want to limit the number of people authorized to perform calibration. An
Administrator password can be set from the ColorPASS Control Panel or in Setup
from the Command WorkStation to control access to calibration.

Understanding calibration

Although most users’ needs are met by the default calibration set, the ColorPASS
allows you to choose a calibration set to customize calibration for specialized jobs.

Calibration allows you to:

• Maximize the color reproduction capabilities of the ColorPASS.

• Ensure consistent color quality over time.

• Produce consistent output across ColorPASS servers that are connected to the same

print engine.

• Achieve better color matches when reproducing spot colors such as PANTONE

colors or other named color systems.

• Optimize the ColorPASS for using ColorWise rendering styles (CRDs) and CMYK

simulations, and for using ICC profiles.

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Содержание ColorPASS-Z5000

Страница 1: ...ColorPASS Z5000 COLOR GUIDE I N C L U D E S F I E R Y S O F T W A R E ...

Страница 2: ......

Страница 3: ...d trademark of UNIX System Laboratories a wholly owned subsidiary of Novell Inc PANTONE is a registered trademark of Pantone Inc Matchprint is a trademark of Imation Corp All other terms and product names may be trademarks or registered trademarks of their respective owners and are hereby acknowledged Legal Notices APPLE COMPUTER INC APPLE MAKES NO WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT L...

Страница 4: ... einzeln als auch in einer Anlage die einen normalen Anwendungsfall nachbildet auf die Einhaltung der Funkentstörbestimmungen geprüft Es ist jedoch möglich dass die Funkentstörbestimmungen unter ungünstigen Umständen bei anderen Gerätekombinationen nicht eingehalten werden Für die Einhaltung der Funkentstörbestimmungen einer gesamten Anlage in der dieses Gerät betrieben wird ist der Betreiber vera...

Страница 5: ...COMPANYING DOCUMENTATION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY THIS LIMITATION WILL APPLY EVEN IF ELECTRONICS FOR IMAGING OR ANY AUTHORIZED DEALER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE YOU ACKNOWLEDGE THAT THE PRICE OF THE UNIT REFLECTS THIS ALLOCATION OF RISK BECAUSE SOME STATES JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTA...

Страница 6: ......

Страница 7: ...1 10 Black Overprint 1 12 Spot Color Matching 1 13 Printer Drivers and Print Options 1 14 What a printer driver does 1 14 PostScript printer driver for Windows 95 98 Me Windows NT 4 0 and Windows 2000 1 15 Adobe PostScript printer driver for Mac OS 1 20 Chapter 2 Simple and Advanced Workflows Workflow concepts 2 1 Short run printing versus color proofing 2 1 RGB CMYK and PANTONE colors 2 2 Desktop...

Страница 8: ...ophotometer 3 6 Calibrating the spectrophotometer 3 10 Calibrating with ColorWise Pro Tools and DTP41 3 16 Using a densitometer 3 24 Setting up the densitometer 3 24 Calibrating the densitometer 3 27 Calibrating with ColorWise Pro Tools 3 28 Expert Mode 3 33 Calibrating from the Control Panel using AutoCal2 3 35 Removing calibration 3 37 Chapter 4 ColorWise ProTools Profile Manager 4 1 Setting the...

Страница 9: ... Working with color 5 1 Color reference pages 5 2 Office applications 5 3 Choosing colors in office applications 5 4 PostScript applications 5 5 Choosing colors in PostScript applications 5 5 Default output profile 5 8 CMYK simulation 5 8 Chapter 6 Office Applications Working with office applications 6 1 Defining colors 6 1 Working with imported files 6 1 Selecting options when printing 6 2 Output...

Страница 10: ...er 8 Page Layout Applications Working with page layout applications 8 1 Defining colors 8 1 Importing images 8 2 CMYK simulation 8 3 Adobe PageMaker 6 5 for Mac OS and Windows 8 4 Windows version requirement 8 4 Importing images 8 4 Selecting options when printing 8 5 Optional color management from PageMaker 8 6 QuarkXPress 4 x for Mac OS and Windows 8 7 Importing images 8 7 Selecting options when...

Страница 11: ... colors 9 6 Importing images 9 6 Selecting options when printing from FreeHand 9 7 Saving files for importing into other documents 9 8 Optional color management in FreeHand 9 9 CorelDRAW for Windows and Mac OS 9 9 Defining colors 9 9 Importing images 9 9 Selecting options when printing 9 10 Saving files for importing into other documents 9 11 Optional color management in CorelDRAW 9 11 Appendix A ...

Страница 12: ... Color Management Controlling printed color B 1 Maintaining copier consistency B 2 Print device gamut B 2 Basics of color management B 3 Color conversion B 4 Appendix C Importing densitometer measurements Simple ASCII Import File Format SAIFF C 1 Example of 1D Status T density for EFI 34 patch page C 2 Example of 1D Status T density for EFI 21 patch page C 2 Example of 1D Status T density for an a...

Страница 13: ...s used in this manual to refer to this supported device About the documentation The Color Guide is organized to supply you with key information about managing the color output of your ColorPASS Chapter 1 discusses the ColorPASS s print options and how to get the best color results and Chapter 2 describes several effective workflows ColorWise Pro Tools are discussed in the next two chapters Chapter...

Страница 14: ...ting Started describes how to install software to enable users to print to the ColorPASS Specifically it describes installation of PostScript printer drivers printer description files and other user software provided on the User Software CD It also explains how to connect each user to the network The Printing Guide describes the printing features of the ColorPASS for users who send jobs via remote...

Страница 15: ...ur particular needs you can Set the behavior of CMYK printing to emulate DIC Euroscale and SWOP offset press standards Match PANTONE colors for the best match when printed using four color press conditions or when printed using presses with extra custom plates Select a color rendering dictionary CRD also called a rendering style for RGB printing CRDs allow for rich saturated printing of presentati...

Страница 16: ...ding ICC profiles to the ColorPASS it can simulate a custom press or another copier as well as accurately print colors from a particular monitor or a particular scanner In addition you can create customized ICC profiles for the copier ColorWise also lets you use any Status T densitometer by importing data in a standard file format see Appendix C In this case it is important to note that the qualit...

Страница 17: ...e options as server defaults from ColorPASS Setup or from the Control Panel as described in the Configuration Guide These defaults will apply to all subsequent print jobs unless you override them Select some ColorWise options particularly default ICC profile settings and calibration options from ColorWise Pro Tools These options include default Simulation Profile see page 1 8 Simulation Method see...

Страница 18: ...Lab XYZ and other calibrated color spaces NOTE For users who are familiar with PostScript 3 0 color RGB Source Profile affects all CIEBasedABC color spaces if the source space is RGB If you send CMYK data to the ColorPASS in CIEBasedDEFG format for example by choosing PostScript Color Management in Adobe Photoshop the ColorPASS s Rendering Style selection which normally affects only RGB data will ...

Страница 19: ...ies the specified gamma value to the RGB source space definition see page 1 6 To use this print option you must choose Other as the RGB Source setting Other Phosphors Hitachi EBU Hitachi Ikegami NTSC Radius Pivot SMPTE Trinitron Applies the specified phosphor monitor type information to the RGB source space definition see page 1 6 To use this print option you must choose Other as the RGB Source se...

Страница 20: ...Output Profile is applied to all data in the print job see page 1 9 User defined output profiles can be downloaded to the ColorPASS with ColorWise Pro Tools see Chapter 4 Pure Black Text Graphics On Off Default set at Setup The On setting optimizes the quality of black text and line art output see page 1 10 Black Overprint On Off Default set at Setup The On setting overprints black text placed on ...

Страница 21: ...es are rendered well similar to the Photographic rendering style Artwork and graphs in presentations In many cases it can be used for mixed pages that contain both presentation graphics and photographs Saturation Graphics Relative Colorimetric Provides white point transformation between the source and destination white points For example the bluish gray of a monitor will map to neutral gray You ma...

Страница 22: ...en the prints from the ColorPASS will be consistent across platforms Below are the ColorPASS s RGB Source Profile options EFIRGB specifies an EFI defined color space recommended for users who have no detailed information about their RGB data sRGB PC specifies the industry standard definition for a generic Windows PC monitor Apple Standard specifies the definition of all standard Mac OS computer mo...

Страница 23: ...n determine whether RGB data is converted into the full gamut of the copier Output or whether it is first converted into the gamut of another digital printer or a press standard Simulation This feature is helpful for making one device behave like another for RGB data For example if a high quality ICC profile is available for another print device the copier can simulate the behavior of that device ...

Страница 24: ...y Communication enabled the name of each downloaded or custom profile is represented in the CMYK Simulation Profile setting pop up menu If you are printing with the AdobePS driver from a Mac OS or Windows NT computer or the Microsoft PostScript driver from a Windows 2000 computer downloaded or custom profiles appear as Simulation 1 through Simulation 10 For more information on Two Way Communicatio...

Страница 25: ... profile for your copier describing its color characteristics and a calibration target that describes the expected behavior of the copier The output profiles provided with the ColorPASS correspond to one of several different gradation smoothing calibration sets You should select an output profile based on the desired gradation smoothing property which determines the amount of smoothing the ColorPA...

Страница 26: ...ut 10 For more information on Two Way Communication see Getting Started Pure Black Text Graphics The Pure Black Text Graphics option affects the printout for black text and vector graphics on a page Under most circumstances it is preferable to leave this option set to the On position When Pure Black Text Graphics is on black colors generated by applications are printed using 100 percent black only...

Страница 27: ...le color black CMYK 0 0 0 100 by the Microsoft PostScript Level 3 driver for Windows 2000 To print this single color black at the maximum toner density of the copier set the Pure Black Text Graphics option to On Input black color Pure Black Text Graphics On Off RGB Prints 100 black With the default profile prints a rich black using all toners CMYK Prints only with black toner because CMYK simulati...

Страница 28: ... that contains some black text on a light blue background The background blue color is CMYK 40 30 0 0 and the black text is CMYK 0 0 0 100 With Black Overprint On the final text portions of the page are overprinted or combined with the underlying colors This results in CMYK 40 30 0 100 for the color used for the text There is no transition in the cyan and magenta toners and the quality of the outp...

Страница 29: ...ulation setting see page 1 8 NOTE You can use the Spot Color Matching option only when printing composites not when printing separations Spot Color Matching and the PANTONE Coated Color Reference The PANTONE Coated Color Reference described on page 5 7 prints differently depending on the Spot Color Matching setting On The ColorPASS uses its built in table to generate the best matches of the PANTON...

Страница 30: ...contains information about the particular features supported by the ColorPASS and the copier The PPD can be thought of as the lines of PostScript code in the file that are device specific When you print a job the printer driver lets you choose among features by displaying print options A few PostScript applications can send PostScript data directly to the copier and present print options within th...

Страница 31: ...f settings that you can later access Additionally you can choose different settings for individual jobs from the applications you use The printer driver writes a PostScript file containing the instructions generated by your application and the ColorPASS print options you selected The printer driver sends the PostScript file to the ColorPASS The ColorPASS then performs PostScript processing and col...

Страница 32: ...advantage of the color features of the ColorPASS Before you proceed make sure you have completed the following procedures described in Getting Started Install the Adobe PostScript Printer Driver version 4 3 x Windows 95 98 Me and the ColorPASS PPD Set up the ColorPASS for printing To set print options open the PPD as described on page 1 15 Under the Fiery Printing tab click the ColorWise menu to s...

Страница 33: ...urrent ColorPASS settings This brings up the Expert Color Settings flowchart window below which displays additional color settings for the ColorPASS Each option includes a pop up menu from which you can select settings for your specific job Click Expert Settings button to access additional ColorWise options ...

Страница 34: ...in the lower left hand corner of the Expert Color Settings window on the previous page queries the ColorPASS for the current default settings This feature is available only when you enable Two Way Communication in the driver see Getting Started For most users the default settings provide the right level of color control For more information about individual print options see page 1 3 ...

Страница 35: ...l advantage of the color features of the ColorPASS Before you proceed make sure you have completed the following procedures as described in Getting Started Install the Microsoft PostScript Printer Driver and ColorPASS PPD Set up the ColorPASS for printing To set print options do the following 1 Open the PPD as described on page 1 15 2 Click the Advanced tab in the Printing Preferences dialog box a...

Страница 36: ...on specific applications see Chapters 6 through 9 Setting color management print options You choose print options from the various panes of the AdobePS driver dialog box To access the initial AdobePS dialog box choose Print from your application s File menu NOTE The word pane is used to describe the different pages that appear in the driver s dialog box when you make selections from the pull down ...

Страница 37: ... Separation to Output CMYK data is converted to the selected output profile s CMYK color space ColorSync Color Matching Provides for color conversion on the host computer This option can be used with PostScript devices such as the ColorPASS but it is intended for use with PostScript Level 1 devices If you use this option be sure to specify the ColorPASS s ICC profile as the Printer Profile ColorSy...

Страница 38: ... Color Grayscale from the Print Color pop up menu In the Printer Specific Options pane choose settings for the print options described on page 1 3 If these settings are ones you use regularly click Save Settings to save them for subsequent jobs Choose Color Grayscale ...

Страница 39: ...to the version of a particular application when considering the workflows in this chapter Short run printing versus color proofing Short run color printing refers to those jobs for which the ColorPASS is the final print device Printing jobs to the ColorPASS in preparation for printing on an offset press is referred to as color proofing Both types of ColorPASS print jobs use RGB CMYK and PANTONE co...

Страница 40: ...prepress applications are adjusted so the gamut of the ColorPASS copier can simulate that of the press In a short run printing workflow specifying CMYK colors according to the calibrated copier output eliminates the need for simulation during printing PANTONE spot colors are special inks manufactured to run on an offset printing press Spot colors can be simulated using CMYK copier toners or proces...

Страница 41: ...minate the potential for undesirable color management related conflicts such as iterative color conversions and inconsistent color The ColorPASS applies global corrections to specific groups of RGB CMYK and PANTONE colors to avoid such conflicts Finally by sending RGB files instead of larger CMYK files from applications to the ColorPASS network traffic is minimized and jobs are generally printed m...

Страница 42: ...lors If displayed colors are more important trust your eyes and your monitor Visually select colors on your monitor but be aware that colors will be optimized only for your monitor When the document is opened on other monitors the colors may look different And even though printed colors may not match those displayed on your monitor they will still print on the ColorPASS with good results If printe...

Страница 43: ...or your calibrated copier NOTE CMYK Simulation set to None is also useful when you want to prepare an output profile of your calibrated copier or when you use less efficient color management from the desktop such as ColorSync or ICM In this workflow colors are modified only at the calibration stage This is indicated by the black box in the diagram below While this workflow lends some control over ...

Страница 44: ...calibration and color management The ColorPASS comes into play near the end of the color workflow To ensure that the colors you have selected reach the ColorPASS and ColorWise in a usable form you should bypass any color management from applications and printer drivers Keep in mind however that color management from applications and printer drivers is fully supported by ColorWise see Advanced work...

Страница 45: ...on wear heat humidity and service The diagram below indicates that no modifications are made to colors in this workflow Turn off color management in your application Generally when printing to the ColorPASS it is best to disable color management in the application to ensure that the ColorPASS receives color data properly and prints it accurately Save your files using color safe settings There are ...

Страница 46: ...pecific color space used by your files Do not include halftone and transfer functions Turn off color management in the printer driver On Windows computers if the printer driver offers Image Color Matching options select Printer Image Color Matching On Mac OS computers you should set the printer driver to include no color management commands at print time see page 1 20 ...

Страница 47: ...erPoint respectively Short run printing examples The following examples illustrate short run printing on the ColorPASS Photoshop RGB workflow This short run workflow of printing an RGB image from Photoshop is one of the simplest ColorPASS color workflows In it RGB data is sent from the application through the printer driver to the ColorPASS and the RGB to CMYK conversion takes place on the ColorPA...

Страница 48: ...Source Embed Source Profiles Convert RGB to CMYK Convert CMYK to CMYK Select RGB Mode Select CMYK Mode Select Destination Profile Save as TIFF Save as EPS Save as JPEG Print Mac OS Only Black and White Color Grayscale ColorSync Color Matching PostScript Color Matching Define RGB Source Select RGB Source None Select Rendering Style CRD Select RGB Separation Output Select RGB Separation Simulation C...

Страница 49: ...e colored using CMYK process colors or PANTONE spot colors Use the settings illustrated in this workflow for printing brochures newsletters and other layouts NOTE Anytime CMYK colors are placed in a document they should be selected from printed output see page 2 4 This document could be created as follows Create an RGB image in Photoshop and save it as an EPS Create a graphic in Illustrator using ...

Страница 50: ...S Save as JPEG Print Read Embedded Profile Define RGB Colors Define CMYK Colors Define PANTONE Colors Convert RGB to CMYK Convert PANTONE to CMYK Embed Source Profile Select Destination Profile Export as TIFF Save as EPS Print Read Embedded Profile Define RGB Colors Define CMYK Colors Define PANTONE Colors Convert RGB to CMYK Convert CMYK to CMYK Convert PANTONE to CMYK Embed Source Profile Select...

Страница 51: ...mage in Photoshop and save it as Photoshop EPS Create a graphic in Illustrator using CMYK colors and a PANTONE spot color and save as Illustrator EPS Create a presentation in PowerPoint using RGB colors Import the Illustrator EPS graphic into the PowerPoint presentation and place the Photoshop EPS image Print the PowerPoint document to the ColorPASS Use ColorWise to convert the PowerPoint RGB colo...

Страница 52: ...o CMYK Select RGB Mode Select CMYK Mode Select Destination Profile Save as TIFF Save as EPS Save as JPEG Print Read Embedded Profile Define RGB Colors Define CMYK Colors Define PANTONE colors Convert RGB to CMYK Convert PANTONE to CMYK Embed Source Profile Select Destination Profile Export as TIFF Save as EPS Print Define RGB Colors Convert CMYK to RGB Print Mac OS Only Black and White Color Grays...

Страница 53: ...s they use In this example an image in Photoshop 5 x is converted from RGB to CMYK using Photoshop s ICC color conversion features in the CMYK Setup option For more information on CMYK Setup see your Photoshop 5 x documentation Using the Simulation settings available in ColorWise the CMYK image is printed to the ColorPASS and the output is made to appear as if it were printed on an offset press Th...

Страница 54: ... print options Read Embedded Profiles Define RGB Source Embed Source Profiles Convert RGB to CMYK Convert CMYK to CMYK Select RGB Mode Select CMYK Mode Select Destination Profile Save as TIFF Save as EPS Save as JPEG Print Mac OS Only Black and White Color Grayscale ColorSync Color Matching PostScript Color Matching Define RGB Source Select RGB Source None Select Rendering Style CRD Select RGB Sep...

Страница 55: ...t in radio button from CMYK Setup in Photoshop 5 x Color Settings Adjust the Ink Options and Separation Options to match your offset press Select the Tables radio button in CMYK Setup and click Save This saves your settings as a CMYK ICC profile that you will later download to the ColorPASS as a custom simulation profile Click on the Built in radio button in CMYK Setup again and click OK Launch Co...

Страница 56: ...ofiles Convert RGB to CMYK Convert CMYK to CMYK Select RGB Mode Select CMYK Mode Select Destination Profile Save as TIFF Save as EPS Save as JPEG Print Mac OS Only Black and White Color Grayscale ColorSync Color Matching PostScript Color Matching Define RGB Source Select RGB Source None Select Rendering Style CRD Select RGB Separation Output Select RGB Separation Simulation Convert Press CMYK to P...

Страница 57: ...e is set to Simulation This workflow useful for proofing brochures newsletters and other layouts lets you maintain consistency by using the source RGB file for multiple purposes This document could be created as follows Create an RGB image in Photoshop and save it as Photoshop EPS Place the EPS image in a QuarkXPress document Create several process colored page elements alongside the image and pri...

Страница 58: ...o CMYK Select RGB Mode Select CMYK Mode Select Destination Profile Save as TIFF Save as EPS Save as JPEG Print Read Embedded Profile Define RGB Colors Define CMYK Colors Define PANTONE Colors Convert RGB to CMYK Convert CMYK to CMYK Convert PANTONE to CMYK Embed Source Profile Select Destination Profile Export as TIFF Save as EPS Print Mac OS Only Black and White Color Grayscale ColorSync Color Ma...

Страница 59: ...he Control Panel This chapter explains how calibration works and provides instructions for all calibration procedures Calibrating with ColorWise Pro Tools is described on page 3 28 calibrating from the ColorPASS Control Panel with AutoCal2 is described on page 3 35 For information on advanced calibration and simulation features available with ColorWise Pro Tools such as editing profiles and creati...

Страница 60: ...default output profile is used NOTE Changing calibration has the potential to affect all jobs for all users so you may want to limit the number of people authorized to perform calibration An Administrator password can be set from the ColorPASS Control Panel or in Setup from the Command WorkStation to control access to calibration Understanding calibration Although most users needs are met by the d...

Страница 61: ...sired target density values Calibration curves are the graphic equivalent of transfer functions which are mathematical descriptions of changes that will be made to the data you start with Transfer functions are often graphed as input or output curves The ColorPASS generates calibration curves after comparing measured values to the final target values for each of the four toner colors The target va...

Страница 62: ...files see page 1 9 Scheduling calibration In general you should calibrate the ColorPASS at least once a day depending on the volume of print jobs If it is very important to maintain consistent color or if the copier is subject to wide fluctuations in temperature or humidity calibrate every few hours To get the best performance calibrate whenever there is a noticeable change in print quality If you...

Страница 63: ...should be visible even though they may be very faint in the five percent and two percent range and each color s patch set should show uniform gradation from patch to patch as the color lightens from 100 percent to zero percent If the solid density patches 100 cyan magenta yellow or black look less saturated with time show the pages to your copier service technician to find out whether adjusting th...

Страница 64: ...tometer to prepare for measuring the printed patches see Calibrating the densitometer on page 3 27 For additional information about setting up and using the DPT41 see the Instrument Operator s Manual that is included with it TO CONNECT THE X RITE DTP41 TO THE COMPUTER 1 Turn off the computer 2 Unpack the X Rite DTP41 and remove the spacer from the measurement page slot 3 Plug the square end of the...

Страница 65: ...the interface cable into the 9 pin DB9 Connector cable adapter Insert the 9 pin end into the COM1 or COM2 port on the computer and tighten the screws If the available port on your computer is 25 pin you must use the 8 pin to 25 pin adapter Square connector Unused connector Connect to computer Interface cable Connect to adapter ...

Страница 66: ...tly into the serial port of the computer NOTE For Macintosh computers with a USB port for example an iMac you need an adapter to connect the DTP41 to your computer See the X Rite Inc web site www x rite com for information on supported adapters Unused connector Connect to serial port ...

Страница 67: ...power input of the X Rite DTP41 and plug the AC adapter into the power cord Plug the power cord into a wall outlet 6 Turn on the computer 7 Use ColorWise Pro Tools to calibrate the X Rite DTP41 see page 3 11 8 Use ColorWise Pro Tools and the DTP41 to calibrate the ColorPASS see page 3 16 AC adapter Small connector Power cord ...

Страница 68: ...ite DTP41 for more information on this method Multiple users can be connected to one ColorPASS server with ColorWise Pro Tools but only one user at a time can use the Calibrator module An error message appears if you try to calibrate when another user is already using ColorWise Pro Tools to calibrate NOTE ColorWise Pro Tools for Windows and Mac OS computers are fundamentally the same differences a...

Страница 69: ...rWise Pro Tools and connect to the ColorPASS For instructions on configuring the connection to the ColorPASS see Getting Started NOTE If the connection to the ColorPASS from Command WorkStation that also allows for access to ColorWise Pro Tools is not established you can directly launch ColorWise Pro Tools independently of Command WorkStation 3 Click Calibrator ...

Страница 70: ... DTP41 should appear as a measurement method This information is provided to Calibrator by the ColorPASS If this option does not appear make sure you are connected to the ColorPASS 5 Under Get Measurements click Measure 6 In the Measurement Options dialog box click Measure ...

Страница 71: ...ometer 7 Select the appropriate COM port for the DTP41 from the Available Ports menu The Instructions field displays instructions for selecting the port 8 Click Utilities 9 Click Calibrate DTP 41 Instructions field Select port for DTP41 ...

Страница 72: ...t already done so 11 Insert the end of the Color Reflection Reference strip with the arrow into the calibration strip entrance on the DTP41 centering it below the alignment mark see the diagram on page 3 6 Insert the strip about 3 inches past the front idler rollers until it rests against the rear drive rollers 12 Click Read Reference The DTP41 will pull the calibration strip through automatically...

Страница 73: ...41 calibration When the DTP41 requires calibration the computer prompts you When this dialog box appears click Calibrate Now and follow the instructions starting with step 9 on page 3 13 After calibrating the DTP41 calibrate the ColorPASS see page 3 16 Status field indicates DTP41 was calibrated successfully ...

Страница 74: ...ColorPASS server with ColorWise Pro Tools but only one user at a time can use the Calibrator module An error message appears if you try to calibrate when another user is already using ColorWise Pro Tools to calibrate NOTE Before using ColorWise Pro Tools and the DTP41 to calibrate the ColorPASS follow the instructions on page 3 27 for calibrating the DTP41 spectrophotometer TO CALIBRATE THE COLORP...

Страница 75: ...ot appear make sure you are connected to the ColorPASS 4 Under Check Print Settings choose the desired calibration set Choose the appropriate calibration set for the type of media you will use most often NOTE For this calibration to take effect the calibration set must be associated with one or more output profiles The default calibration set is already associated with the default output profile s...

Страница 76: ... for 34 Sorted Patches In the Input Tray pop up menu specify the paper source NOTE If you print a measurement page from the Stack Bypass Tray you must select SB Stack Bypass or SB Size Set at Copier in the Input Tray pop up menu Choose SB Size Set at Copier if you specify SB Size Set at Copier as the Paper Source option in the printer driver and then load the appropriate paper in the Manual Feed t...

Страница 77: ...op up menu The Instructions field displays instructions for selecting the port 12 Feed the measurement page into the DTP41 starting with the cyan strip Align the page in the measurement page slot of the DTP41 so the appropriate color column is centered below the alignment mark see the diagram on page 3 6 Insert the page about 3 inches past the front idler rollers until it rests against the rear dr...

Страница 78: ...r the magenta yellow and black strips A check mark appears on the circle of the color just read and the Status field indicates that color was measured successfully The Previous and Next buttons on the Measurements window can be used to reverse or advance to another step in the measurement sequence to repeat a measurement Status field indicates color was measured successfully Previous and Next butt...

Страница 79: ...th ColorWise Pro Tools and DTP41 15 When the Status field indicates that all four color strips have been read successfully click the Accept Measurements button 16 In the Measure dialog box click OK Click Accept Measurements ...

Страница 80: ... 3 22 Color Calibration 17 In the Calibrator window click Apply to implement the new calibration set 18 In the Information dialog box click OK This completes the ColorPASS calibration process Click Apply ...

Страница 81: ...ORE DEFAULT CALIBRATION MEASUREMENTS 1 Launch ColorWise Pro Tools and click Calibrator 2 Click Restore Device 3 Click OK to restore the preset default calibration set NOTE Restore device applies only to the currently selected calibration set Click Restore Device ...

Страница 82: ... densitometers can be input using a simple ASCII file format see page C 1 Setting up the densitometer Before you calibrate the ColorPASS using the X Rite DTP32 you need to connect configure and calibrate the densitometer to prepare for measuring the printed patches see Calibrating the densitometer on page 3 27 For additional information about setting up and using the DTP32 see the separate documen...

Страница 83: ...TP32 3 Attach the connector to the computer For a Windows computer insert the 8 pin mini DIN end of the interface cable into the 9 pin DB9 Connector cable adapter Insert the 9 pin end into the COM1 or COM2 port on the computer and tighten the screws If the available port on your computer is 25 pin you must use the 8 pin to 25 pin adapter Square connector Square connector Unused connector Connect t...

Страница 84: ...omputer See the X Rite Inc web site www x rite com for information on supported adapters 4 Use the AC adapter to provide power Plug the small connector on the adapter cable into the side of the X Rite DTP32 and plug the adapter into a wall outlet 5 Turn on the computer 6 Calibrate the densitometer see below 7 Use ColorWise Pro Tools to calibrate the ColorPASS see page 3 28 Unused connector Connect...

Страница 85: ... Insert the arrow end of the X Rite Auto Cal Strip into the 35mm slot on the front of the X Rite DTP32 until it stops or the roller starts pulling the strip Reading appears momentarily followed by the density values and CALIBRATION OK The densitometer automatically returns to the MAIN MENU If UNRECOGNIZABLE STRIP appears repeat the process or try cleaning the strip see the X Rite DTP32 Operating M...

Страница 86: ... noted in this chapter The windows and dialog boxes you see illustrated are the Windows version NOTE Changing the calibration has the potential to affect all jobs for all users so you may want to limit the number of people authorized to perform calibration An Administrator password can be set from the ColorPASS Control Panel to control access to calibration TO CALIBRATE THE COPIER USING CALIBRATOR...

Страница 87: ...ou are connected to the ColorPASS 4 Under Check Print Settings choose the desired calibration set If there is more than one option choose the appropriate calibration set for the type of media you will use most often NOTE For this calibration to take effect the calibration set must be associated with one or more output profiles The default calibration set is already associated with the default outp...

Страница 88: ...rement page from the Stack Bypass Tray you must select SB Stack Bypass or SB Size Set at Copier in the Input Tray pop up menu Choose SB Size Set at Copier if you specify SB Size Set at Copier as the Paper Source option in the printer driver and then load the appropriate paper in the Manual Feed tray and select the correct paper size from the copier touch panel display 7 Retrieve the Measurement Pa...

Страница 89: ... through the X Rite DTP32 The Status field displays instructions for selecting the port and feeding the measurement page through the DTP32 four times once for each color strip 11 When the Status field indicates that the measurements were read successfully click Accept 12 In the Measure dialog box click OK 13 In the Calibrator window click Apply to implement the new calibration set 14 In the Inform...

Страница 90: ...DEFAULT CALIBRATION MEASUREMENTS 1 Launch ColorWise Pro Tools and click Calibrator 2 Click Restore Device 3 Click OK to restore the preset default calibration set NOTE Restore device applies only to the currently selected calibration set ...

Страница 91: ...nts with any profile associated with the currently selected calibration set You can also create a custom comparison page and save it as a PostScript or an Encapsulated PostScript EPS file called CALIB PS Then print the file to the Hold Queue of the ColorPASS from your application or download it to the Hold Queue with Fiery Downloader An additional way to create the CALIB PS file is to rename any j...

Страница 92: ...ile use the same target an additional menu called Plot Against appears at the top right of the window above It lists all output profiles that use that same calibration set Selecting an output profile from this menu displays the target curves associated with that profile If each output profile contains a unique calibration target when you switch profiles the curves displayed also change Output prof...

Страница 93: ...lorPASS TO ACCESS AND USE AUTOCAL2 1 At the Idle screen press the Menu button to enter the Functions menu 2 Choose Calibration and choose Set Up Calibration If a password is set on the ColorPASS enter it and press OK 3 For Calibration Mode select Standard or Expert Expert Mode adds the option to print a Comparison Page see page 3 33 4 For Tray choose the paper source for the patch page and press O...

Страница 94: ...rip to the top center of the color measurement page Make sure the patches on the grayscale strip do not overlap the color patches 11 Close the platen glass cover being careful not to move the grayscale strip and color measurement page 12 Click OK Status messages display the progress of scanning and calculating measurements 13 When prompted to Print Comparison Page Expert Mode only select Yes to pr...

Страница 95: ...calibration replaces the existing one if the same calibration set is selected TO REMOVE CALIBRATION FROM THE CONTROL PANEL 1 From the ColorPASS Control Panel access the Calibration menu as described on page 3 35 2 Choose Remove Calibration 3 When prompted verify that you want to proceed with removing calibration The current measurements are removed and a default calibration is restored ...

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Страница 97: ...llustrated are the Windows version For information on installing and configuring a connection to ColorWise Pro Tools see Getting Started NOTE If the connection to the ColorPASS from Command WorkStation that also allows for access to ColorWise Pro Tools is not established you can directly launch ColorWise Pro Tools independently of Command WorkStation Profile Manager Profile Manager allows you to m...

Страница 98: ...re information on output profiles see page 1 9 NOTE Changing the ColorPASS default profiles affects all jobs for all users so you might want to limit the number of people authorized to use ColorWise Pro Tools by setting an Administrator password Several profiles are provided with the ColorPASS and you can create additional ones as needed by modifying the existing ones You can also download profile...

Страница 99: ...n on output profiles see page 1 9 Setting the default profiles The default profiles are applied to all print jobs sent to the ColorPASS unless you override them using print options Therefore the defaults should be the most commonly used profiles TO SPECIFY A DEFAULT PROFILE 1 Launch ColorWise Pro Tools and click Profile Manager ...

Страница 100: ...fault RGB Source and Output profiles looks like a target The icon indicating the default Simulation profile changes in appearance depending on whether the default RGB Separation setting is set to Simulation or Output 2 Select the profile you want as the default for a profile type and click Profile Settings 3 In the Profile Settings dialog box click Default and click Apply 4 Click OK 5 In the main ...

Страница 101: ...mputer connected to the ColorPASS TO DOWNLOAD A PROFILE 1 Launch ColorWise Pro Tools and click the Profile Manager The left side of the main Profile Manager windows lists the ICC profiles in the default directory of your workstation For Windows 95 98 Me the default directory is Windows System Color For Windows NT 4 0 and Windows 2000 the default directory is Winnt System32 Color For Mac OS the def...

Страница 102: ...should be only profiles of the device to which your ColorPASS is connected Although CMYK printer profiles can be downloaded as Simulation or Output consider how they will be used If you want the ColorPASS prints to look like another printer download that profile as a Simulation If you have a custom profile of the copier your ColorPASS is connected to download that profile as an Output profile 4 Cl...

Страница 103: ... profiles that appear in the main Profile manager window without the lock icon next to them Locked profiles cannot be deleted but most can be backed up TO BACK UP PROFILES 1 Launch ColorWise Pro Tools and click Profile Manager 2 Select the profile on the ColorPASS to upload The arrow in the middle of the Profile Manager window turns green and points to the left indicating the profile is available ...

Страница 104: ...he default option Defining profiles For Windows 2000 and Mac OS computers before you can apply any downloaded or edited profile to a print job that profile must be linked to one of the predefined custom names or you can set the profile as the default for all print jobs see setting default profiles page 4 3 There are 10 names available for custom profiles Source 1 through 10 for RGB Source Simulati...

Страница 105: ... list and click Profile Settings or double click DIC new 3 Select the Appear in Driver as checkbox choose one of the predefined custom simulation names Simulation 1 through Simulation 10 from the pop up menu and then click Apply Make sure to choose a name that is not already linked with another simulation If you try to define two profiles with the same name you will get an error message For an out...

Страница 106: ...ofile When you choose Profile Settings for an output profile the Use Calibration Set option also appears You must calibrate the ColorPASS with this calibration set before this option has any effect If you have never measured for this calibration set default measurements will be used For more information about calibration sets see page 3 2 In Profile Settings you can also change profile description...

Страница 107: ...e CMYK Simulation option of the printer driver applies the DIC new simulation to the print job If you do not define a custom simulation profile your job will print with CMYK Simulation Profile set to None If you do not define a custom RGB Source or Output profile the default profile is used DIC new will appear in driver as Simulation 1 ...

Страница 108: ...rget which is one component of the output profile You cannot make changes to the calibration target in this window but you can import a new target see page 3 2 Color Editor also has three Edit Modes for editing simulations Master Use Master mode to create a custom master simulation that affects all print jobs to which it is applied unless a linked simulation exists for the selected combination of ...

Страница 109: ...eated a linked simulation the edits are not applied to the linked simulation TO EDIT A SIMULATION PROFILE IN MASTER MODE OR AN OUTPUT PROFILE IN CUSTOM MODE 1 Launch ColorWise Pro Tools and click Color Editor 2 Choose Simulation or Output from the View pop up menu Simulation lists the simulation profiles resident on the ColorPASS and Output lists the output profiles resident on the ColorPASS 3 Cho...

Страница 110: ... to view and manipulate color output values NOTE When editing an output profile in Custom mode the Import button at the bottom of the Color Editor window lets you import a calibration target file trg created on another ColorPASS using the previous version of ColorWise The current version of ColorWise does not allow you to save a target separately rather it saves the target in conjunction with an o...

Страница 111: ...e or two colors at a time helps you fine tune your adjustments To turn off a color click its eye icon In the example below cyan and magenta are visible and can be edited 6 Click Dot Gain to adjust the dot gain value for simulating press output You can choose either the North American or European standard Then use the sliders to select the desired Dot Gain The range of values for North American at ...

Страница 112: ... You can adjust the curves directly by clicking and dragging points on the curve or by entering numbers into the input and output boxes The graph maps the input percentage to the output percentage These percentages refer to the size of the CMYK halftone dots The curve you selected appears and points along the curve are marked so you can adjust them NOTE You should adjust points in this way only af...

Страница 113: ...files are locked and must be saved with a new name For Windows 2000 and Mac OS computers custom profiles must be linked to one of the 10 predefined custom profile names Simulation 1 through 10 for simulation or Output 1 through 10 for output in order to be accessible from the printer driver You can create as many custom profiles as you want but a maximum of 10 are available from the printer driver...

Страница 114: ...an output profile with which your edited simulation will be linked from the Link with menu The edited simulation will be linked with the output profile you select from the Link with menu NOTE When editing a simulation profile in Quick mode the Import button at the bottom of the Color Editor window lets you import a custom Quick Simulation created on another ColorPASS using the previous version of ...

Страница 115: ...tput ink percentage is greater than 0 and the input ink percentage is 0 the Use Master print option will have no effect Undoing simulation edits You can undo the changes you made to simulations master and linked in a number of ways If you have not yet saved your edits click Done on the Color Editor menu bar and don t save the changes If you saved your edits under a new simulation name and want to ...

Страница 116: ...nwanted edits are linked from the Link with menu 4 Click Revert to Master NOTE Revert to Master makes the curves for one or more linked simulations match the last saved master simulation If you have edited and saved changes to a master simulation your linked simulations will revert to the changed master not the original ...

Страница 117: ...ing edited profiles You can view a printed sample of a profile before you save it to the ColorPASS You can print a Comparison Page provided with ColorWise Pro Tools which shows a comparison of images and colored patches with and without edits User defined CALIB PS in the Hold Queue You can create a custom comparison page and save it as a PostScript or an Encapsulated PostScript EPS file called CAL...

Страница 118: ...mparison Page specify the paper size LTR A4 or 11x17 A3 in the Paper Size pop up menu In the Input Tray pop up menu specify the paper source NOTE If you print the measurement page from the Stack Bypass Tray make sure to select SB Size at Copier in the Input Tray pop up menu Load the appropriate paper in the Stack Bypass tray and then select the correct paper size from the copier touch panel displa...

Страница 119: ...s in the printer driver These default settings can also be overridden using Command WorkStation or Fiery WebSpooler Fiery Spooler Color Setup maintains a connection to the ColorPASS so changes made in Profile Manager appear automatically In addition the defaults set in Color Setup are automatically reflected in other ColorPASS tools that list default settings You can also reset the ColorPASS to it...

Страница 120: ...options are selected simply by clicking on a checkbox next to the option s name Once you have made your changes you must click OK or Apply for the changes to take effect Clicking OK sets the new defaults and closes the Color Setup window Clicking Apply sets the new defaults and keeps the Color Setup window open Clicking Cancel closes the Color Setup window without applying any changes to the defau...

Страница 121: ...plications such as presentation software spreadsheets and word processing programs use the RGB color model They typically transmit only RGB data to the print device Illustration applications use both the RGB and CMYK color models but typically transmit only CMYK data to the print device Pixel editing applications use both the RGB and CMYK color models They also transmit both RGB and CMYK data to t...

Страница 122: ...t you see the range of colors that can be printed on your copier For predictable color use the color reference pages when defining the colors in your document RGB Color Reference a Microsoft Word file and a Microsoft PowerPoint file that let you view the colors available in the standard palettes of office applications and see how those colors print on the ColorPASS see page 5 4 CMYK Color Referenc...

Страница 123: ... of preselected colors some allow you to add new colors to the palette using a color picker Although some applications allow you to specify color using the CMY HSL and HSV color models these applications always send RGB color data to the ColorPASS An exception to this is a CMYK EPS file placed in the document which is sent as CMYK data When working with color in office applications keep in mind th...

Страница 124: ...th your ColorPASS user software Print these files using different CRDs to see how the colors appear when printed to the ColorPASS For best results print the color reference page using the same print options you plan to use for your final document Select the colors you want to use from the printed version of the RGB color reference page and then use those colors in your document ...

Страница 125: ...l color management settings in the application In addition some PostScript applications that allow you to define colors in RGB or other color models can also send data to the ColorPASS in those color spaces Color controls in PostScript applications are typically designed for printing on an offset press and some adjustments are required for printing to the ColorPASS Displayed versions of colors you...

Страница 126: ...or Reference included with your ColorPASS user software lets you see how various cyan magenta yellow and black combinations look when printed on your copier To print the CMYK Color Reference download the file to the ColorPASS The printed pages display groups of color patches in graduated combinations of yellow magenta and cyan and smaller patches that include 25 50 and 75 black Refer to these page...

Страница 127: ...f PANTONE colors as defined by Pantone These are the same CMYK values defined in applications that include PANTONE libraries The CMYK values used to produce the color as well as the PANTONE color name number are printed below each swatch To print the PANTONE Coated Color Reference download the file to the ColorPASS For the location of the file on the User Software CD see Getting Started If the def...

Страница 128: ...output profiles A and B which you can calibrate for different paper stocks In certain cases you may wish to customize the default output profile to achieve particular color effects see page 4 12 If so the new customized output profile is applied to all data in the print job You can also use ColorWise Pro Tools to download your own output profile to the ColorPASS see page 4 5 Downloaded output prof...

Страница 129: ... way to use CMYK or PANTONE colors is to define them in EPS files with an illustration or page layout application and then place these files into MS Office documents Colors in EPS files are preserved until they reach the ColorPASS assuming no PostScript Color Management information was included MS Office applications lack finesse when displaying EPS files so use these files only when RGB colors ar...

Страница 130: ... file and import it into the document Selecting options when printing There are few differences among office applications with regard to ColorPASS printing The instructions in this chapter apply to all office applications Use the instructions in Chapter 1 to specify print options and color management settings To specify these options you must use a PostScript Level 2 or later printer driver such a...

Страница 131: ...ersion 5 02 or later open the Adobe Color Management Assistant Mac OS or Adobe Color Management Wizard Windows by choosing Color Management from the Photoshop Help menu See your Adobe Photoshop 5 x documentation or Adobe s Technical Guidelines for Photoshop on the internet at www adobe com Photoshop 5 x color settings Photoshop 5 x has a control panel and three setup dialog boxes that control how ...

Страница 132: ...e Gamma control panel that corresponds to your monitor you may encounter poor monitor to print matching NOTE If a profile for your particular monitor is not available use the Adobe Gamma control panel s setup Assistant or Wizard on Windows to customize an available profile that at least has the same type of phosphors as your monitor Display the Adobe Gamma control panel by double clicking its icon...

Страница 133: ...g from the RGB and CMYK menus When you open files that do not contain an ICC profile you have the choice to convert the file to your current Photoshop working space setting or leave the file unconverted the preferred choice but make sure the current Photoshop working space setting matches the intended color space of the image In the Profile Mismatch Handling area choose Ask When Opening from the R...

Страница 134: ... you create new RGB files or if you want to standardize your RGB files you should choose EFIRGB Click Load if the file is not visible in the RGB pop up menu You can load the Calibrated RGB setup file EFIRGB ICC ColorSync file or the EFIRGB ICM file All describe the same RGB space and automatically set the Gamma White Point and Primaries You may consider sRGB if you usually view images on a generic...

Страница 135: ...s such as SWOP Office users should choose the ICC profile describing the copier connected to the ColorPASS In this case it is recommended to leave images in RGB and allow the ColorPASS to convert them to CMYK However if you wish to use Photoshop to convert RGB images to the CMYK color space of the ColorPASS you must first upload one of the output profiles from the ColorPASS to your workstation see...

Страница 136: ... on if not turn it off ColorSync defaults You should have ColorSync 2 5 x or later installed on your Mac OS computer The ICC profiles used by ColorSync are saved in System Folder ColorSync Profiles From the Apple menu choose Control Panel ColorSync Use the following settings System Profile choose the customized ICC profile for your monitor You need to set up the Adobe Gamma profile to ensure that ...

Страница 137: ...aving files for importing into other documents Before saving a file perform any rotating cropping and resizing needed This speeds processing when printing from the application in which the image is placed It is recommended that you use EPS or TIFF file formats to save RGB images that will be imported into other documents and printed to the ColorPASS You can import EPS and TIFF files into virtually...

Страница 138: ...file revert to a binary version instead If you experience problems printing the document in which you place the image substitute an ASCII version of the same image and print the document again Binary encoding is much more compact than ASCII encoding but occasionally causes printing problems with some system configurations Tips for advanced users Use the following information to implement alternate...

Страница 139: ...t If you decide to turn on Photoshop s PostScript Color Management option when you save a CMYK EPS image Photoshop embeds PostScript color information that defines the CMYK source color space of the image When you print a CMYK EPS file that contains PostScript color information to the ColorPASS CRDs are used instead of ColorWise CMYK Simulation and Simulation Method settings Make sure to choose th...

Страница 140: ...olor space before sending it to the ColorPASS With the AdobePS 8 7 printer driver for Mac OS these options appear in the Adobe Photoshop pane of the Print dialog box Printing CMYK images Use the following instructions to print CMYK images Do not check PostScript Color Management Choose RGB Color as the color space Choose an encoding method Choose CMYK Color as the color space Choose an encoding me...

Страница 141: ...es with Photoshop PostScript Color Management If you select an RGB color space and decide to use PostScript Color Management from the Photoshop pane of the printer driver Photoshop sends RGB data to the ColorPASS along with PostScript color information defining this RGB color space Remember that when you select PostScript Color Management a CRD will be used to perform color conversions to CMYK NOT...

Страница 142: ...Color Matching setting has no effect because Photoshop converts PANTONE colors to CMYK values when you work in CMYK mode If the image was separated for an offset press standard apply the corresponding CMYK Simulation setting For example if the image is separated for SWOP choose SWOP as the CMYK Simulation setting If Photoshop is configured for a custom separation using ICC profiles select the corr...

Страница 143: ... You can also choose named colors from the PANTONE color library in Photoshop For best results use the color definition methods described in Chapter 5 Saving files for importing into other documents Before saving an RGB EPS file check the Photoshop Monitor Setup This setting defines the RGB source color space information that will be included in the RGB EPS image You can override this source color...

Страница 144: ...cument again Binary encoding is much more compact than ASCII encoding but occasionally causes printing problems with some system configurations NOTE If you choose JPEG encoding keep a backup of the original image saved with binary encoding until you have seen the printed results of the JPEG encoded file Although not often at times the compression used for JPEG encoding may produce unwanted artifac...

Страница 145: ... separations printed from Photoshop Printing RGB images Use the following instructions to print RGB images Choose whether to print in RGB or CMYK With the AdobePS 8 7 printer driver for Mac OS these options appear in the Adobe Photoshop pane of the Print dialog box If you select Print in RGB Photoshop sends RGB data to the ColorPASS and a CRD is used to perform color conversion Choose the appropri...

Страница 146: ... separation not a press standard choose None as the CMYK Simulation setting or choose the corresponding custom simulation profile on the ColorPASS if one has been downloaded with the Profile Manager For more information on the Profile Manager and ColorWise Pro Tools see Chapter 4 NOTE If you choose JPEG encoding keep a backup of the original image saved with binary encoding until you have seen the...

Страница 147: ...rce and Rendering Style settings have no effect on CMYK images The Spot Color Matching setting is also irrelevant because Photoshop converts PANTONE colors to CMYK values when you work in CMYK mode If the image was separated for an offset press standard apply the corresponding CMYK Simulation setting For example if the image is separated for SWOP choose SWOP as the CMYK Simulation setting If the i...

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Страница 149: ... which affect only RGB data do not affect colors defined in page layout applications For predictable results with CMYK colors use the CMYK Color Reference when defining colors in page layout applications See Choosing colors in PostScript applications on page 5 5 NOTE If the application allows you to define colors in RGB you should determine whether it converts the RGB data to CMYK before sending i...

Страница 150: ...the image and sends CMYK data to the ColorPASS NOTE To take advantage of RGB Source and Rendering Style settings for images imported into QuarkXPress 4 02 either save images in the EPS format or use Quark s PrintRGB XTension which outputs RGB TIFF image files without converting them to CMYK Tips for advanced users If you place multiple RGB images some non photographic and some photographic a singl...

Страница 151: ...r SWOP choose SWOP as the CMYK Simulation setting If you print separations to the ColorPASS and choose use the Combine Separations feature in conjunction with Full Simulation the result may not match that of the same page printed as composite If the document contains CMYK images that were separated according to the color characteristics of a custom ICC profile not a press standard profile choose t...

Страница 152: ...ected by your RGB Source and Rendering Style settings For best results with placed images use the instructions in Importing images on page 8 2 and CMYK simulation on page 8 3 NOTE It is recommended you use ColorWise color management rather than the CMS options built into PageMaker It is important that you do not use both systems for the same print job To turn off PageMaker 6 5 color management fea...

Страница 153: ...inter driver interface described in Chapter 1 is not used In the Print Document dialog box choose the ColorPASS PPD from the PPD menu In the Print Options dialog box choose Normal not the Optimized Subsampling default from the Send image data menu to ensure that TIFF images print at their full resolution Choose the ColorPASS PPD Click Options Choose Normal Click Features ...

Страница 154: ...or Matching setting When you click Print from any of the PageMaker 6 5 dialog boxes the job is sent to the ColorPASS NOTE You do not see the printer driver dialog boxes described in Chapter 1 Optional color management from PageMaker If you have additional color management requirements not offered by ColorWise such as managing color on non ColorPASS devices you may want to consider using the color ...

Страница 155: ...mentation for instructions NOTE Quark CMS converts RGB TIFF JPEG and PICT images to CMYK before sending color data to the ColorPASS RGB Source and Rendering Style settings have no effect on this data unless you use Quark s PrintRGB XTension which outputs RGB TIFF image files without converting them to CMYK Importing images With the exception of RGB images that are saved in EPS format or that use Q...

Страница 156: ... box If the document contains PANTONE colors choose the appropriate Spot Color Matching setting For instructions on specifying print options see Chapter 1 Choose the ColorPASS PPD Mac OS Choose an output paper size Click to specify printer settings Choose the ColorPASS copier Windows Click to specify copier settings Choose the ColorPASS PPD ...

Страница 157: ... 32 make sure the EfiColor XTension is not loaded in the XTensions folder EFICOLOR profiles are not currently provided with ColorPASS products Without the correct EFICOLOR profile the EfiColor XTension cannot perform color conversions on placed images Windows version requirement For the Windows version of QuarkXPress make sure a copy of the ColorPASS PPD file is in the XPRESS PDF folder Importing ...

Страница 158: ...elect the ColorPASS PPD from the Printer Type menu in the Page Setup Mac OS or Printer Setup Windows dialog box Choose an output paper size Choose the ColorPASS PPD Mac OS version Choose Binary Choose the ColorPASS PPD Windows version Choose an output paper size Choose Binary ...

Страница 159: ...aced images or RGB colors that QuarkXPress will print without converting to CMYK choose RGB Source and Rendering Style settings If the document contains PANTONE colors choose the appropriate Spot Color Matching setting For instructions on specifying print options see Chapter 1 ...

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Страница 161: ...e use the EPS file format when saving files with an illustration application Defining colors All illustration applications use the CMYK color model While some also allow you to define colors using other color models they all send CMYK data to the ColorPASS Consequently the RGB Source and Rendering Style settings in the PPD do not affect all colors printed from illustration applications For predict...

Страница 162: ... multiple RGB images some non photographic and some photographic a single CRD may not be suitable for all the images In this case you may want the photographic images to bypass the CRD altogether To accomplish this separate the image to CMYK data with a pixel editing application such as Photoshop and perform color correction on it Then save it as an EPS or TIFF file and import it into the document...

Страница 163: ...r 4 Adobe Illustrator 8 x for Windows and Mac OS If you are using ColorWise color management disable Illustrator s color management by removing the Color Conversion and Color Conversion Utilities files from the Adobe Illustrator Plug ins Extensions folder Defining colors Any colors defined in Illustrator are sent to the printer in CMYK even those defined using other color models For best results u...

Страница 164: ...ant to consider using the color management features offered by Illustrator For more information see your Illustrator documentation Selecting options when printing For the Windows version of Illustrator select the appropriate copier from the Name pop up menu and select PostScript Level 2 or 3 Windows Choose Composite Choose PostScript Level 2 or 3 Click Properties to set print options Select the co...

Страница 165: ...uctions on setting print options see Chapter 1 Saving files for importing into other documents When saving files in Illustrator 8 x for importing into other types of documents use the EPS file format Illustrator can save color information in both RGB and CMYK The ColorPASS s RGB Source and Rendering Style settings affect color output of RGB artwork saved in Illustrator EPS and imported into other ...

Страница 166: ...ned in FreeHand are sent to the copier in CMYK even those defined using other color models For best results use the color definition methods described on Choosing colors in PostScript applications on page 5 5 You can control the conversion of RGB colors defined in FreeHand by specifying settings in the Preferences dialog box under the Colors category or by clicking the Color Management button in t...

Страница 167: ...ced in a document are affected by your RGB Source and Rendering Style settings in the PPD For best results with placed images use the instructions in Importing images on page 9 2 and CMYK simulation on page 9 2 Selecting options when printing from FreeHand When printing refer to the following illustrations to select options In the Print dialog box make sure the Use PPD option is turned on From the...

Страница 168: ...e Spot Color Matching setting in the PPD Refer to your FreeHand documentation for information about other FreeHand print options Saving files for importing into other documents When saving files in FreeHand 8 x for importing into other types of documents use the EPS file format FreeHand saves all color information in CMYK The RGB Source and Rendering Style print options have no effect on the color...

Страница 169: ...s in PostScript applications on page 5 5 You can control the conversion of RGB colors defined in CorelDRAW by specifying settings in the Color Management dialog boxes On Windows machines the Color Management dialog boxes are located in Tools Color Management On Mac OS computers the color management functions are located under Edit Preferences Global NOTE If you do not wish to use color management ...

Страница 170: ...OS computers click on the Printer button in the General Print dialog box to select the copier and print options To use ColorPASS color management make sure the Use color profile option in the Misc tab of the Print dialog box is not on If this option is turned on CorelDRAW color management settings are used to convert RGB colors and images to CMYK Click Properties to access ColorPASS print options ...

Страница 171: ...B Source and Rendering Style print options have no effect on color output of artwork saved with CorelDRAW and imported into other kinds of documents In the case of CorelDRAW files imported into Photoshop however vector data from the CorelDRAW file is rasterized into bitmaps in Photoshop and the final color space of the bitmap data is determined by the color mode you set in Photoshop Optional color...

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Страница 173: ...tarting point for experimentation and further research The physics of color The human eye can see electromagnetic radiation at wavelengths between 400 nanometers purplish blue and 700 nanometers red This range is called the visible spectrum of light We see pure spectral light as intensely saturated or pure colors Sunlight at midday which we perceive as white or neutral light is composed of light f...

Страница 174: ...mensional model of color vision The arc around the top of the horseshoe encompasses the pure or spectral colors from blue violet to red Although the CIE chromaticity diagram is not perceptually uniform some areas of the diagram seem to compress color differences relative to others it is a good tool for illustrating some interesting aspects of color vision By mixing any two spectral colors in diffe...

Страница 175: ...Plate 1 Sunlight split into spectral colors by prism Plate 2 CIE chromaticity diagram ...

Страница 176: ...Plate 3 Hue saturation and brightness Hue Saturation Brightness Plate 4 Adobe Photoshop Color Picker ...

Страница 177: ... other colors There are two methods for creating a range of colors from a set of primary colors Computer monitors and scanners are based on the additive color model Printing technologies including ColorPASSs and offset presses are based on the subtractive color model Additive RGB color Color devices that use the additive color model make a range of colors by combining varying amounts of red green ...

Страница 178: ... green and blue light respectively White occurs when no colorant is applied Combining all three subtractive primaries in theory yields black but due to deficiencies of cyan magenta and yellow colorants combining these three primaries actually yields a muddy brown Black colorant is added to compensate for the deficiencies of cyan magenta and yellow colorants Consequently color printing uses four pr...

Страница 179: ...Plate 5 Additive color model Plate 6 Color monitor ...

Страница 180: ...Plate 7 Subtractive color model ...

Страница 181: ...p computers are output to an imagesetter which creates film separations The film is used to make a prepress proof which is an accurate predictor of the final print job and allows you to make corrections before going to press Once the proof is approved the printer makes plates from the film and runs the print job on the press With a ColorPASS you simply print the file The ColorPASS processes the Po...

Страница 182: ...or printing is done exclusively on the ColorPASS you will encounter concepts from offset printing if you use high end graphics applications For example color controls in illustration applications such as Illustrator are geared toward specifying color for offset printing using process and spot colors Many applications allow you to specify the screening used for each printing plate Using color effec...

Страница 183: ...ow they will appear when seen side by side Colors opposite one another on the wheel are called complements plate 9 and create a striking contrast side by side This can be the basis for a bold graphical design but it is an effect you should use with discretion since it can be visually fatiguing Other bold combinations to consider are split complements a color and the two colors adjacent to its comp...

Страница 184: ...ions created from primary complements especially red and cyan or red and blue they are visually fatiguing and hard to read Color text is more legible when distinguished from its background by a difference in lightness for example dark blue text on a light beige background In addition using many different colors in a string of text makes for a confused appearance and is hard to read However using a...

Страница 185: ...Plate 8 Color wheel Plate 9 Complements split complements and triads ...

Страница 186: ...STOP STOP Exceptio probat regulam de rebus non exceptis De gustibus non est disputandum Plate 10 Good and bad uses of color with text Plate 11 Raster versus vector artwork ...

Страница 187: ...scale images require 8 bits per pixel For photographic quality color 24 bits of RGB color information are required per pixel yielding 256 levels of red green and blue For CMYK images 32 bits per pixel are required When printing raster artwork the quality of the output depends on the resolution of the source raster If the raster resolution is too low individual pixels become visible in the printed ...

Страница 188: ...t Beyond a certain threshold a higher image resolution greatly increases file size while having a minimal effect on output quality The optimal image resolution depends on the resolution of the final print device Aim for the resolution that optimizes both file size and output quality The resolution of a raster image along with its bit depth and physical dimensions determine its file size The follow...

Страница 189: ... save versions at progressively lower resolutions down to 100 ppi using a pixel editing application such as Photoshop Always save a copy of the original high resolution version in case you need to revert to it The high resolution data cannot be recreated from a lower resolution version Print the files and examine the output You will likely begin to see a marked deterioration in output quality at r...

Страница 190: ... size If you scale a large image down to a percentage of its actual size you incur unnecessary file transfer time because the image data for the entire large image is sent to the printer If an image is placed multiple times at markedly different sizes in a document save a separate version of the image at the correct size for each placement If you need to place an image at greater than 100 in a doc...

Страница 191: ...rPASS you want to preserve the vivid colors you see on your monitor If you are working with color that will be printed on an offset press you want the ColorPASS output to match other prepress proofs or PANTONE color swatch books The type of print job and the final print device ColorPASS or offset press determine the methodology you use to achieve the best results No matter what your goals are two ...

Страница 192: ... prints and show them to the service technician whenever output densities vary from the norm or other problems appear Print device gamut Different color reproduction techniques have different color capabilities or gamuts Color transparency films have comparatively large gamuts as do color monitors The color gamut that can be produced using process inks or CMYK toners on paper is smaller This is wh...

Страница 193: ... 95 98 Me Windows NT 4 0 and Windows 2000 computers in Image Color Matching ICM and on Mac OS computers in ColorSync More and more software developers are also incorporating color management systems into high end applications The ColorPASS color management system ColorWise supports this industry standard profile format A color management system or CMS is a translator between the color space of the...

Страница 194: ...translate between the source color space and the color space of the output device The ColorPASS allows you to specify default and override settings for the source color space information and the output profile information see page 1 1 When you use these settings you do not need to use the features of other color management systems Your ColorPASS software includes ICC profiles for use with other co...

Страница 195: ... value Comments may be on any line in the file and these lines start with a pound sign followed by a space A line with a pound sign followed by any character other than a space has been reserved Comments must be on an entire line by themselves Each line of data contains five values The first number is the sequential patch number for EFI 34 and EFI 21 pages or the ink value percentage for other pag...

Страница 196: ... 0700 0 0800 0 0700 3 0 1000 0 1000 0 1000 0 1000 more data 33 1 6700 1 3400 0 8900 1 6700 34 1 7200 1 4300 0 9300 1 7500 Example of 1D Status T density for EFI 21 patch page This file format is used to specify the Status T density measurements of the EFI 21 patch page The value in the first column is the patch number The first patch must be 1 and the last must be 21 EFI 3 EFI ColorWise 2 0 Data t...

Страница 197: ...t column is the ink toner percentage of the patch The first percentage must be 0 and the last percentage must be 100 The percentages must increase in between EFI 3 EFI ColorWise 2 0 Data type 1DST percnt Cyan Magent Yellow Black 0 0000 0 0300 0 0400 0 0200 0 0400 0 3922 0 0600 0 0700 0 0800 0 0700 1 1765 0 1000 0 1000 0 1000 0 1000 more data 98 0000 1 6700 1 3400 0 8900 1 6700 100 0000 1 7200 1 43...

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Страница 199: ...its per pixel CMYK images bitmap An image comprised of small squares arranged in a grid Each square in the grid is a pixel The number of pixels per inch defines the resolution of a bitmap blasting An undesirable effect that occurs when excess amounts of toner possibly combined with certain types of paper stock cause objects in an image to spread beyond its boundaries as defined in the file BMP A g...

Страница 200: ...of both casual and experienced color management users composite printer Any output device that can print directly in color without first creating color separations A composite print can be used as an early proof of an offset print job continuous tone contone Describes a photographic image that contains gradient tones from black to white such as a 35mm transparency or a photograph Continuous tones ...

Страница 201: ...PostScript stream Euroscale A European standard of specifications for separations proofs and color printing flexography A printing technology that uses flexible raised image plates Flexography can be used to print on non flat materials such as cans four color printer A printing device that uses cyan magenta yellow and black ink or toner gamma A numeric value representing the relationship gamma cur...

Страница 202: ...al Color Consortium ICC that describes the color capabilities including the gamut of a color device based on the differences between an ideal and the current device The ideal is often provided by the manufacturer as a color reference file ICC profiles are implemented on Mac OS computers in ColorSync and on Windows 95 98 Me Windows NT 4 0 and Windows 2000 computers in Image Color Matching ICM The C...

Страница 203: ...nal relationships in images Unprintable colors are mapped to printable colors in a way that retains differences in lightness sacrificing color accuracy as necessary pixel The smallest distinct element of a raster image The term is a combination of the words picture and element PostScript A device independent page description language developed by Adobe which is used to print and display pictures a...

Страница 204: ...f colors by combining red green and blue light called the additive primaries Commonly used to refer to the color space mixing system or monitor in color computer graphics simulation profile The simulation profile describes the color characteristics of another print device such as a printing press that you want the ColorPASS to simulate solid color rendering A color rendering style intended for use...

Страница 205: ... a web offset press not a sheet fed press undercolor removal In areas where all three process colors C M Y overprint the amounts of those colors are reduced and replaced by black This improves wet ink trapping and reduces ink costs in process color printing vector image Graphic illustration created on computers where picture objects are defined mathematically as lines or curves between points Thes...

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Страница 207: ...l Understanding Desktop Color Second Edition Berkeley Peachpit Press 1994 Margulis Dan Professional Photoshop Color Correction Retouching and Image Manipulation with Adobe Photoshop John Wiley Sons 1995 Miller Marc D and Zaucha Randy The Color Mac Second Edition Hayden Books 1995 X Rite Color Guide and Glossary Communication Measurement and Control for Digital Imaging and Graphic Arts X Rite Incor...

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Страница 209: ...importing measurements C 1 measurements 3 2 3 3 3 33 overview 3 2 to 3 5 scheduling 3 4 targets 3 2 3 3 see also densitometer ColorWise Pro Tools see also spectrophotometer ColorWise Pro Tools calibration patch page 3 3 charts using color in A 7 CIE chromaticity diagram A 2 A 3 color model A 2 CIELAB color space B 3 CMY color model 5 3 CMYK Color Reference 5 2 5 6 CMYK Simulation Method option 1 4...

Страница 210: ...view 3 16 3 28 to 3 34 Commission Internationale de l Eclairage see CIE Comparison Page 3 33 complements color A 7 compression JPEG 7 8 7 11 7 14 7 16 7 17 computer monitors see monitors Configuration page calibration status 3 5 continuous tone devices A 6 Contrast ICC rendering style 1 5 Control Panel calibration from 3 2 3 16 3 28 removing calibration 3 37 CorelDRAW 9 9 CRDs bypassing 6 2 8 2 9 ...

Страница 211: ...color management systems B 3 ICM profiles applied to RGB images 9 2 illustration applications 9 1 Illustrator 5 5 9 3 Image Color Matching see ICM Image ICC rendering style 1 5 ink B 2 International Color Consortium see ICC J JPEG 7 8 7 11 7 14 7 16 7 17 L light A 1 to A 2 line art see vector images M Macintosh interface cable 3 8 3 26 Mac OS printer driver 1 20 Macromedia FreeHand see FreeHand ma...

Страница 212: ...aster images A 9 PostScript and non PostScript RGB data 7 13 PostScript applications color handling 5 5 using color in 5 5 to 5 8 PostScript printer description file see PPD PostScript Printer Driver Windows 95 98 Me 1 15 PostScript printer drivers 6 2 PowerPoint see Microsoft Office PPD 1 14 1 16 1 19 1 20 G 5 prepress proof A 5 B 1 presentation print jobs rendering styles appropriate for 1 5 usi...

Страница 213: ...hort run color printing 2 1 simulation see CMYK Simulation option simulations custom 1 8 Source 1 10 option 1 6 source color space B 4 source color space profile color conversion B 4 spectral colors A 2 spectral components of light A 1 A 2 spectrophotometer calibrating 3 10 split complements A 7 Spot Color Matching option 1 4 1 13 5 7 spot colors 5 5 A 6 Status T C 1 subtractive color model A 3 A ...

Страница 214: ... 98 Me color management print options 1 16 Windows 95 98 Me printer driver 1 15 Windows Graphics Device Interface see GDI applications Word see Microsoft Office workflow advanced 2 9 color proofing 2 1 ICC profiles 2 15 short run jobs 2 1 simple 2 4 with Illustrator 2 11 with Photoshop 2 9 2 17 ...

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