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Page 52

Manual TECHKON SpectroJet Chapter 3 – How to use SpectroJet

1.

2.

3.

Measure – Colorimetric (ExPresso Pro)

Thanks to the spectral performance of SpectroJet it is possible to calculate and
display colorimetric values as well. Measurements in colorimetry modes have the
advantage of an absolute description of color based on characteristic values. So it is
possible to measure spot colors as well.

Colorimetric measurements refer in most cases to the most popular color system
in the printing industry: the CIE L*a*b* color space. The color distance

D

E describes

how close two colors match. A value of 0 means that two colors are identical.
It can be defined in the “Measurement settings” (see p. 34) according to which

D

E

formula the color distance is calculated by ExPresso.

1. Detailed information for every ink zone by pointing on the bar graph.

2. Average values for all ink zones.

3. Measurement values out of tolerance will be marked with red top.

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Содержание Spectro Jet

Страница 1: ...33458 USA From outside US 1 Tel 561 320 9162 Fax 561 320 9176 info pce americas com www pce instruments com english www pce instruments com PCE Instruments UK Ltd Units 12 13 Southpoint Business Park...

Страница 2: ...roducing this manual Nevertheless we can not fully guarantee the complete absence of errors TECHKON GmbH and the authors can not be held liable neither for any possibly incorrect statements nor their...

Страница 3: ...apter 4 How to use the Windows software SpectroConnect You will be fascinated how easy the system is to use You will know how to work with SpectroJet after only a few minutes The third chapter will sh...

Страница 4: ...3 2 Care and maintenance 17 3 3 Software overview 20 3 4 Software settings 23 3 5 Defining and running a print job 40 Chapter 4 How to use the Windows software SpectroConnect 4 1 Software description...

Страница 5: ...ther standardization method can be applied SpectroJet will always deliver all relevant mea surement data necessary for evaluating high quality prints The supplied software TECHKON SpectroConnect displ...

Страница 6: ...nclined tables perfectly to handle delivery contains all components sup plied in a practical carrying case Easy to install installation is made within seconds measurement device is maintenance free ro...

Страница 7: ...r quality control in real time The perfect tool for spot and scan measurements The guiding track Spectro Jet Track which is option ally available supports the accurate scanning of long color bars TECH...

Страница 8: ...ral density measurement data export densitometric gray balance dot area dot gain and printing contrast slur doubling value target values references tolerances OK sheet face and reverse printing works...

Страница 9: ...ements for TECHKON software MS Windows XP Vista or 7 Optional accessories SpectroJet Track horizontal track with two vertical bars Standard length SpectroJet Track 52 520 mm 74 740 mm or 102 1020 mm S...

Страница 10: ...sample The device incorporates a high resolution spectral sensor which analyzes the color spectrum of the measured sample The spectral data is the base information for calcu lating densitometric and...

Страница 11: ...resso 3 software Installation It is important to carry out the following steps in the right order to make sure that the USB device drivers will be installed properly 1 Make sure that SpectroJet and th...

Страница 12: ...ctor in the socket will be released Connect the USB connector 3 at the other end of the cable with the PC and the second branch of the cable which ends in a phone socket 4 with the phone jack of the A...

Страница 13: ...edge of the table Make sure that the vertical bars are paral lel and well aligned in order to hold the left and right end of the guiding track which will attach magnetically to the vertical bars Fina...

Страница 14: ...measurements without polarization filter are carried out only one measurement run is necessary which is the standard practice in the USA The faster you move the measurement device along the color bar...

Страница 15: ...d that the back printed side might shine through the paper and influence the measure ment Here the optional available guiding track SpectroJet Track is a helpful tool When using color bars with a patc...

Страница 16: ...ard which is included SpectroJet must be placed on the standard with the measurement aperture on the ceramic tile Make sure that the ceramic white standard is clean and not de fective Absolute white s...

Страница 17: ...r cleaning photographic equipment Clean the device casing only with a soft cloth and a non aggressive plastic cleaner Never use alcohol or chemically aggressive solvent based cleaners which can destro...

Страница 18: ...o not press the screws too tight in order to avoid damaging the threads Exchanging apertures The measurement aperture can be replaced for cleaning purposes A special screw driver type TORX T6 is requi...

Страница 19: ...months starting with the date of pur chase The invoice is the certificate of warranty The warranty is invalid if the damage is caused by inadequate use of the device Should a TECHKON product do not w...

Страница 20: ...rly structured The menu bar comprises the three sec tions Print job blue buttons Settings yellow buttons and Exit gray button The appropriate submenu layers follow this color system persistently Print...

Страница 21: ...Manual TECHKON SpectroJet Chapter 3 How to use SpectroJet Page 21 P 61 P 26 P 31 P 38 P 26 P 27 P 29 P 31 P 33 P 36 P 37 P 38 Settings Exit...

Страница 22: ...gram window Density after a measurement was carried out In this program window a click on the bar graph opens a second window displaying detailed measurement data of the ink zones The command line 3 o...

Страница 23: ...d a dongle are connected If the software does not detect any measurement device an information window requests you to connect the measurement device to the PC or to select another measurement device o...

Страница 24: ...ons Presses up to now you will see the following info window You can set up a printing machine which fits to your print job by clicking on the New button in the menu item Presses When it has been inst...

Страница 25: ...the yellow Settings buttons 1 p 24 and then selecting one button from the sublayer 2 p 24 The referring win dow opens 3 p 24 and can be edited All settings which were made can later be recalled when...

Страница 26: ...sing after if the printing press has a reversing unit the location printing unit can be set You can set up new printing presses see p 24 and edit or delete the ones which are already defined and liste...

Страница 27: ...a screen color The four process colors can not be deleted or duplicated But it is possible to edit further inks and to import duplicate and export them By using the Export function you can hand over i...

Страница 28: ...lor book and confirm the process with OK Choose Maximum density 4 for density channel for spot colors Now click on the green arrow to activate the Measure function 5 after you have placed the measurem...

Страница 29: ...surement patches Other definitions can be loaded by using the Import function But not only already existing color bars can be used and edited You can also generate your own printing definitions in ExP...

Страница 30: ...indow now you have the four process colors C M Y K as well as 4 spot colors at your disposal Each of these colors is given as solid ink dot percentage value and slur doubling patches The bottom line o...

Страница 31: ...on ISO 12467 color values for CMYK Individual target and tolerance settings can be made as well also for spot colors Click on the New button 1 in the right menu section below the already listed targe...

Страница 32: ...ances of this color manually by editing the text boxes or take the measurement data of SpectroJet by pressing the Measure button 2 Confirm the color and eventually set changes with OK Now the color ap...

Страница 33: ...further information about the actual device and the connection status By clicking on the Settings button in the right lower corner of the Measurement devices menu the window TECHKON SpectroJet opens w...

Страница 34: ...and colorimetric measurements 2 are displayed The standard pre settings for density measurement are for Europe polarization filter on white reference is paper white density filter is ISO E for the USA...

Страница 35: ...ric measurements are polarization filter off white ref erence is absolute white illuminant is D50 observer is 2 and DE formula is CIELAB One can choose other standards by clicking on the pull down men...

Страница 36: ...e already pre installed 1 In the left section of the window further information about the target file and the target folder are displayed 2 The button Settings 3 opens a window headed by the name of t...

Страница 37: ...ray patches as well as the automatic paper white can be edited If required all values can be reset to the G7 defaults Tip There is no access to the settings windows described on page 33 35 when in Set...

Страница 38: ...m is divided into the two sections Information 1 and Settings 2 Information Displays the type of software ExPresso Basic or Pro the software version the dongle ID and if extension modules are installe...

Страница 39: ...ive when exiting ExPresso can also be selected 2 Furthermore older print jobs can be archived instantly by a push of a button and in the same way already archived print jobs can be restored 3 The data...

Страница 40: ...matically This applies also for Print jobs which are not completed and will be resumed later Select The list 1 contains Print jobs which have been already made A Print job can be stopped at any time a...

Страница 41: ...ion function also OK sheets can be taken over for repeated print jobs Make ready Certain selections have to be made before the measurements can be started Make ready Print job info Textual information...

Страница 42: ...press which you have already defined in Settings Measuring conditions Presses see p 24 and 26 and fill the printing units virtually with ink 1 An inking unit can be kept empty as well 2 For example i...

Страница 43: ...virtual filling of the press with ink is not necessary when an already existing print job with the same press configuration is selected in Print job Select and duplicated Make ready Sheet Color bar As...

Страница 44: ...ctroJet As a default the color bar will be centrally aligned Additionally the ink zone for the first measurement can be defined Use the arrow buttons of the Starts in ink zone function to define which...

Страница 45: ...are used In the following example it has been necessary to assign the ink Magenta 1 to the spot color HKS 17 K in printing unit no 7 Thus the color bar will feature a measure ment patch at the right p...

Страница 46: ...asuring conditions Target values Tolerances see p 31 f The information box on the left side of the menu window shows all colors which belong to a target set and their target values Individual target v...

Страница 47: ...a scan measurement The scan measurement can be started by pressing the green measurement button on the device 1 Detailed information for every ink zone by pointing on the bar graph 2 Measurement value...

Страница 48: ...job 2 Clicking on the button with the printer icon opens the connection to the printer which has been already defined in Settings System Software The printer option allows to print out the displayed w...

Страница 49: ...account for the calculation of the report statistics 5 Export measurement starts the export into another application see p 36 6 Set OK sheet defines the OK sheet which is set instead of the target se...

Страница 50: ...color hue It is important that the gray balance patch on which the measurement is taken comprises the right values to achieve a neutral gray when printed correctly The process standard ISO 12647 for o...

Страница 51: ...to the Gracol G7 method which is especially common in the USA It requires the use of an appropriate color bar 1 G7 has to be selected in the section Gray mode display in Settings System Soft ware to...

Страница 52: ...easure spot colors as well Colorimetric measurements refer in most cases to the most popular color system in the printing industry the CIE L a b color space The color distance E describes how close tw...

Страница 53: ...re not suited to use them for handling the printing process Thanks to the spectral measure ment technology of SpectroJet the very useful InkCheck function combines the best of both worlds Spectrally b...

Страница 54: ...e in the window Spot measurement in the sub menu Sample All relevant density and colorimetric values are shown here very clearly and can therefore be interpreted at a glance The maximum density accord...

Страница 55: ...Manual TECHKON SpectroJet Chapter 3 How to use SpectroJet Page 55...

Страница 56: ...are used in regard to individually defined target sets and tolerances ISO report single measurement and ISO job report include additionally the compliance with target sets and tolerances according to...

Страница 57: ...r gamut 3 Tonal curves 4 Selection of measurement to be analyzed 5 Function Mask ink zone see p 49 6 Switch between top side and reverse side if available 7 Prints reports Analyze ISO job report ExPre...

Страница 58: ...surement value meets the tolerance The example shows a red dot in the measurement series no 9 1 which signalizes a measure ment value which is out of tolerance This is also indicated by the fact that...

Страница 59: ...ally a measurement can be selected to serve as starting point This function is available for the top side as well as for the reverse side Analyze Single measurement report Single measurement report ca...

Страница 60: ...t values and tolerances according to customer standards You can choose between a summary see the picture below and the display of single parameters e g dot gain 40 dot gain 80 slur doubling contrast a...

Страница 61: ...t Page 61 Exit Just press the Exit button to quit the ExPresso application A window for confirmation will appear There is no need to actively save a Print job or settings made Since ExPresso has an au...

Страница 62: ...ftware requires a computer with a free USB port and a completely installed Microsoft Windows 2000 XP Vista or 7 operating system 4 2 Installation It is important to carry out the following steps in th...

Страница 63: ...l available and select able program modules 1 The menu bar includes functions known from standard Windows applications They comprise New Open Save Print and Quit 2 The window Last spot measurements sh...

Страница 64: ...ing the SpectroJet device can be carried out with this software feature It is very convenient for choosing density and colorimetric settings and according references as well as starting the paper whit...

Страница 65: ...t Chapter 4 SpectroConnect Page 65 4 5 Device update By the application of this module SpectroJet can be loaded with a new internal firmware which is selected by Device update The procedure is explain...

Страница 66: ...troJet works like the keyboard Pressing the measurement button will place the measurement value automatically at the location where the cursor is 1 Here is defined which data will be trans mitted how...

Страница 67: ...part of the module window informs you about the exact color deviations between the sample and the recommended color of the color book 1 Selected ICC profiles 2 Measured sample color 3 Calculation of...

Страница 68: ...of the display where the L a b color circle is A pop up window will ask if the values should be used as sample or as reference values 4 A mouse click on the program symbol will start the plug in Photo...

Страница 69: ...Chart show the trend of L a and b values of a measurement series The TableView shows all values numeri cally In the Job window job relevant text data can be edited 3 A measurement value highlighted i...

Страница 70: ...s are defined and the size of the tolerance circle is set 3 Mean values It can be appropriate to take several single measurements on one sample which then are averaged to an average value The number o...

Страница 71: ...nted in colorimetric terms Color differences between the Fogra target values and the measured samples will be clearly represented in the program module MediaWedge 1 Selection of the media w edge versi...

Страница 72: ...ectroConnect Page 72 1 After the import of the media wedge a short protocol will be generated and can be printed on a self adhesive label with a Dymo label printer 1 2 2 The software supports also the...

Страница 73: ...Measurement time Approximately 160 mm s for 4 mm patches equals approximately 3 seconds for 520 mm sheet length approximately 400 mm s for 8 mm patches single measurement approx 1 second Scanlength Un...

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Страница 75: ...Recycling The device is according to 14 ElektoG registered under the EAP no DE 98280049 Devices for disposal can be sent directly to the manufacturer Calibration The integrated spectral sensor is cal...

Страница 76: ...German Institute for MaterialTesting Bundesanstalt f r Materialpr fung BAM The calculation of colorimetric values is according to the for mulas and tables of DIN 6174 DIN 5033 part 1 9 and CIE The ca...

Страница 77: ...endung den grundlegenden Anforderungen gem EU Richtlinie 2004 108 EC entspricht und dass die folgenden Normen angewandt wurden complies with the essential requirements of the 2004 108 EC Directive if...

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