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FCC COMPLIANCE STATEMENT

FOR AMERICAN USERS

This equipment has been tested and found to comply with the limits for a class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to

provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference
to radio or television reception. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause interference to radio
and television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of the
following measures:

Reorient or relocate the receiving antenna

Increase the separation between the equipment and receiver

Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected

Consult the dealer or an experienced radio/TV

technician

for help.

WARNING

The connection of a non-shielded equipment interface cable to this equipment will
invalidate the FCC Certification of this device and may cause interference levels which

exceed the limits established by the FCC for this equipment. It is the responsibility of
the user to obtain and use a shielded equipment interface cable with this device. If this
equipment has more than one interface connector, do not leave cables connected to

unused interfaces.

Changes or modifications not expressly approved by Epson America, Inc., could void
the user’s authority to operate the equipment.

FOR CANADIAN USERS

This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus as set out in the radio interference regulations of the Canadian
Department of Communications.

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Содержание ES-800C

Страница 1: ...EPSON User s Guide 4001696 COl 00 ...

Страница 2: ...cuit different from that to which the receiver is connected 3 Consult the dealer or an experienced radio TV technician for help WARNING The connection of a non shielded equipment interface cable to this equipment will invalidate the FCC Certification of this device and may cause interference levels which exceed the limits established by the FCC for this equipment It is the responsibility of the us...

Страница 3: ...EPSON ES 800C Scanner User s Guide ...

Страница 4: ...esulting from the use of the information contained herein Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties for damages losses costs or expenses incurred by purchaser or third parties as a result of accident misuse or abuse of this product or unauthorized modifications repairs or alterations to this product Seiko Epson Corporation ...

Страница 5: ...place for the scanner 1 2 2 Releasing the transportation screw 1 2 3 Plugging in the scanner 1 3 4 Initialization 1 4 Chapter 2 Connecting the Scanner to the Computer Using an Interface Kit 2 2 Computer types 2 2 Parallel Interface 2 3 Connecting the parallel interface 2 3 SCSI 2 4 SCSI connections 2 5 Terminators 2 7 Connecting the SCSI 2 7 Power on sequence 2 8 iii ...

Страница 6: ...pout 3 12 d Brightness 3 12 Color correction 3 12 Gamma correction 3 12 d Cropping 3 12 Judging Image Quality 3 13 Equipment 3 13 RAM and hard disk size 3 13 Accelerator boards 3 13 Video cards 3 14 Monitors 3 14 File compression software 3 14 Chapter 4 Troubleshooting and Maintenance Problems and Solutions 4 2 Indicator lights 4 2 Maintenance 4 10 Replacing the fluorescent lamps 4 11 Transporting...

Страница 7: ...tions 5 4 Environmental Conditions 5 4 Parallel Interface Specifications 5 5 Timing charts 5 8 SCSI Specifications 5 9 Signal pin assignments 5 10 Initialization 5 11 Default settings 5 12 Appendix Scanner Functions A 2 How the scanner works A 2 Scanner settings A 3 Glossary Index V ...

Страница 8: ...ace use Epson s Bidirectional Parallel Interface Kit for DOS Computers BIDIDOS For the SCSI use either Epson s Interface Kit for Macintosh Computers ESMAC or Epson s SCSI Kit for DOS Computers SCSIDOS depending on which computer you have Automatic Document Feeder B813011 This option is designed primarily for optical character recognition OCR scanning With software that supports the ES 8OOC and OCR...

Страница 9: ...troubleshooting maintenance and transportation information Chapter 5 and the Appendix provide technical information See the end of this guide for a glossary of scanner terms and an index Warnings Cautions and Notes 0 e Warnings must be followed carefully to avoid damage to your scanner and computer Cautions should be followed carefully to ensure your scanner operates correctly Notes contain import...

Страница 10: ... 922 8911 0 0 0 Cl 0 0 0 Assistance in locating your nearest Authorized Epson Reseller or Service Center Technical assistance with the installation configuration and operation of Epson products Epson technical information library fax service Product literature with technical specifications on our current and new products Sales of supplies parts documentation and accessories for your Epson product ...

Страница 11: ...placing the scanner on a bed sofa rug or other similar surface The scanner should never be placed near or over a radiator or heat register and it should not be placed in a built in installation unless proper ventilation is provided 7 Use the type of power source indicated on the marking label If you are not sure of the type of power available consult your dealer or local power company 8 This produ...

Страница 12: ...emove may expose you to dangerous voltage points or other risks Refer all servicing in those compartments to service personnel 13 Unplug this scanner from the wall outlet and refer servicing to qualified service personnel under the following conditions A B C D E F When the power cord or plug is damaged or frayed If liquid has been spilled into it If it has been exposed to rain or water If it does ...

Страница 13: ...Chapter 1 Setup Choosing a place for the scanner 1 2 Releasing the transportation screw 1 2 Plugging in the scanner 1 3 Initialization 1 4 setup 1 2 ...

Страница 14: ...er cord Also allow sufficient space above the scanner so that you can easily place and adjust documents on it Keep the scanner away from high temperatures and humidity and places subject to rapid changes of temperature and humidity Keep the scanner away from direct sunlight and strong light sources Avoid places subject to shocks and vibrations 2 Releasing the transportation screw before connecting...

Страница 15: ...when it is released You cannot remove the screw Note You will need to lock the carriage when you store or transport the scanner 3 Plugging in the scanner 1 Firmly connect the power cable to the power inlet on the rear of the scanner and the other end into an appropriately grounded outlet as shown below setup 1 3 ...

Страница 16: ...r s self initialization This lets you see that the scanner is operating properly before you connect it to your computer 1 Open the document cover so you can see the operation of the scanner during the initialization 2 Turn on the scanner by pressing the POWER button When the scanner is initializing the fluorescent lamps on the carriage flash and the carriage s position is reset If the carriage is ...

Страница 17: ... on If the scanner does not work as described turn it off Then make sure that you have released the transportation screw and that the power cord is firmly plugged in and turn it on again If that doesn t solve the problem contact your dealer or call 1 800 922 8911 setup 1 5 ...

Страница 18: ...uter Using an Interface Kit 2 2 Computer types 2 2 Parallel Interface 2 3 Connecting the parallel interface 2 3 SCSI 2 4 SCSI connections 2 5 Terminators 2 7 Connecting the SCSI 2 7 Power on sequence 2 8 Connecting the Scanner to the Computer 2 1 ...

Страница 19: ...d in your computer Then connect the scanner to the computer Note IBM s PS 2 computers have built in bi directional parallel interfaces You do not need to install one in those computers unless you need the built in parallel interface for your printer Epson s SCSI Kit for DOS Computers contains a SCSI board Install the board in the computer Then connect the scanner to the computer 0 For a Macintosh ...

Страница 20: ...instructions in your computer manual Then you connect the scanner to your computer with the cable Connecting the parallel interface Use the cable from the Bidirectional Interface Kit for DOS Computers 1 Make sure that both the scanner and computer are turned Off 2 Connect the 25 pin end of the cable to the computer then tighten the screws on the sides of the connector Connecting the Scanner to the...

Страница 21: ... for DOS Computers or the Epson SCSI Kit for the Macintosh The DOS kit includes a SCSI board for your computer a cable and software You install the SCSI board in your computer following the instructions in your computer manual Then follow the directions below to connect your scanner and computer All Macintoshes have SCSI ports so the Macintosh kit contains only the cable and software Follow the di...

Страница 22: ...or Also the SCSI on the scanner has two 50 pin connectors If you connect other SCSI devices in addition to the scanner to your computer make the scanner the last device in the daisy chain plug the scanner into the 50 pin connector on the next to last device in the chain and attach the optional SCSI terminator to the other SCSI connector on the scanner For this connection you need a SCSI cable with...

Страница 23: ...2 To change the SCSI ID turn the small dial to the desired number e Caution Do not set the SCSI ID to 8 or 9 and do not set the ID number to an ID that is already assigned to another device The computer scanner and other devices will notfunction properly 2 6 Connecting the Scanner to the Computer ...

Страница 24: ...hat the scanner the computer and all other SCSI devices are turned off and unplugged from the power source 2 Connect the 50 pin end of the cable to either the right or left SCSI connector of the scanner then fasten the connector with the clamps on the sides of the connector 3 Connect the 25 pin end of the cable to the SCSI port of your computer Then connect the optional SCSI terminator to the unus...

Страница 25: ...irst the computer may not start up If you have an internal hard disk turn on the scanner and any other SCSI devices you plan to use Wait a few seconds then turn on the computer If you have an external hard disk turn on the scanner external hard disk first on the daisy chain and any other SCSI devices you plan to use Wait a few seconds then turn on the computer SCSI devices in the middle of the dai...

Страница 26: ...mage type or mode 3 6 Resolution 3 8 Size or scale 3 11 d Halftoning and dropout 3 12 Brightness 3 12 Color correction 3 12 r Gamma correction 3 12 ti Cropping 3 12 Judging Image Quality 3 13 Equipment 3 13 RAM and hard disk size 3 13 Accelerator boards 3 13 Video cards 3 14 Monitors 3 14 File compression software 3 14 Scanner Basics 3 1 ...

Страница 27: ...r is ready to scan images This light flickers during scanning Along with the ERROR light it also indicates the type of error ERROR light red Indicates when an error occurs Along with the READY light it indicates the type of error POWER button Turns the scanner on and off RESET button Resets the scanner after an error occurs Pressing this button during scanning stops the scanner and may cause an er...

Страница 28: ...ror See Chapter 4 for details Error type READY ERROR Command error On On interface error Fatal error Option error Off Flashing Off Flashing Flashing Off Placing a Document on the Scanner 1 Turn on the scanner and computer See that the scanner s READY light has come on 2 Open the document cover Scanner Basics 3 3 ...

Страница 29: ...he document on the document table with the side to be scanned down Make sure that the document is carefully aligned 4 Close the document cover gently so that the aligned document is not moved 3 4 Scanner Basics ...

Страница 30: ...aphs on the document table for an extended period of time they may stick to the glass 5 Start the scanner software on the computer and follow its procedures to scan the image Note If you are scanning a large object that will not under the document cover you can remove the document cover temporarily To remove the document cover hold the base of the cover and pull it straight up To re attach the doc...

Страница 31: ...lement your understanding of your software s on screen menus This section refers to some examples found in the Color Image Scanner booklet included with your scanner Each I icon indicates a setting that you make or check The first two are the most important Note Your software may use a somewhat different order or slightly different terminology d Image type or mode For the best and most efficient s...

Страница 32: ...ay in addition to black and white You can also use this setting for color photographs that will be printed in black and white Color This is the setting for color photographs or other originals in color Your software may have several color settings Use 24 bit RGB one pass and or line sequence mode or equivalent settings Note Scans from photographs are better than scans from printed images such as n...

Страница 33: ...ype of output or printing method you will be using The usual printing methods for scanned images fall into the following categories Q Black and white printers laser inkjet or dot matrix are good to excellent for text and line art but are not as good for gray scale images These printers can be used for reproducing photographs in documents like newsletters that do not require the highest quality The...

Страница 34: ...ch uses high resolution phototypesetters also called imagesetters like the LinotronicTM 300 for high quality text and gray scale images For full color images you scan in color and then use your image editing software to manipulate the image and produce color separation files If you plan to do this see the guidelines below on resolution and then follow the instructions in your software manual for m...

Страница 35: ...nting methods just described Also you may want to experiment with your scanner settings possibly using a cropped version of your image to save time until you achieve the desired results Resolution guidelines Line art Black and 300 400 white printer Electronic 300 400 color printer Gray scale Color 75 75 150 200 150 200 Printing press Imagesetter 400 800 150 200 150 200 Tip Here s how to calculate ...

Страница 36: ... the highest quality gray scale or color images the imagesetter can print Similarly even though your laser printer may have a 300 dpi resolution it requires a scan resolution of only 75 to 100 dpi to obtain the best quality gray scale images it cm print d Size or scale This is usually expressed as a percentage If you want your printed image to be larger than the original increase its size with thi...

Страница 37: ...he plus numbers darken the image To lighten a dark original use 1 to 3 or to darken a light original use 1 to 3 Usually you should leave this setting at zero r Color correction Use the default or CRT display r Gamma correction Use the default or CRT Display B I Cropping If you know you are going to use only part of an original use your software s cropping tools before you scan if possible to selec...

Страница 38: ...may be sufficient for your scanning needs but if you are not satisfied with the quality of the images on your monitor or with the speed of image processing read this section While it does not contain specific recommendations it describes various possibilities for improving your scanning system For further information see your dealer or an experienced scanner user RAM and hard disk size Scanned ima...

Страница 39: ...u do precise color work but first be sure you have the right video card File compression software Many different programs are available to make image files smaller for storage or transmission For example they can enable you to store a 3MB image file on a floppy disk Some compression software can compress images and restore them with no loss of data or quality others compress images more but the re...

Страница 40: ...ter 4 Troubleshooting and Maintenance Problems and Solutions 4 2 Indicator lights 4 2 Maintenance 4 10 Replacing the fluorescent lamps 4 11 Transporting the Scanner 4 12 Troubleshooting and Maintenance 4 1 ...

Страница 41: ...oftware P Incorrect operation of your software Also see the documentation that came with your software computer and printer for possible solutions Indicator lights If an error occurs the scanner stops operating and the READY and ERROR lights show the type of error Error type READY Command error On Interface error Off Fatal error Flashing Option error Off ERROR On Flashing Flashing Off Command erro...

Страница 42: ...r more fluorescent lamps needs to be replaced The transportation screw is not released The scanner is broken There is a problem such as an open cover with the optional automatic document feeder Check that the transportation screw is released and check the automatic document feeder then push the RESET button If the scanner still does not operate properly try turning the scanner off and then back on...

Страница 43: ...ADY light is on Make sure that you have selected the correct interface port and settings with your software Also make sure the interface board on your computer is properly installed If you are connecting the scanner with the SCSI interface see that the terminator and SCSI ID are correctly set up If you have other expansion boards in your computer see that they are not interfering with the interrup...

Страница 44: ...ay not have enough memory remaining See your software and computer manuals Make sure that your software supports the ES 8OOC and that you correctly installed or set up the software See your software manuals The entire image is distorted or blurred Make sure that the document is placed flat against the document table the glass area You may have accidentally moved the document during scanning Check ...

Страница 45: ... the edges Adjust your document s position so that the image comes inside the readable area Color is patchy or distorted at the edges of the document If the document is very thick or warped at the edges the edges of the image may be colored Cover the edges of the document with opaque paper to avoid having outside light interfere If part of the document is outside the document table the edge may no...

Страница 46: ...er The lightest setting is 3 and the darkest is 3 The image is too dark Adjust the brightness with your software Also check the brightness and contrast values of your display screen Straight lines in the image are jagged The document may be placed at an angle on the document table Align it so that the horizontal and vertical lines are carefully aligned with the scales on the top and side of the do...

Страница 47: ...ck that the settings of your application and your image match See your software manual A line of dots is always missing on the scanned image If this happens on your printed image only your printer or its print head is probably malfunctioning See your printer manual If this happens on both your screen and printout the scanner s sensor may be malfunctioning Consult your dealer When halftoning is use...

Страница 48: ...omputer display adapter and software Some computers can change the color palette to adjust colors on your screen See your computer manual The printed color seems different from that of the originals Exact reproduction of colors is very difficult See your software manual or your printing company for guidance on color matching The printed image is larger or smaller than the original size Check the i...

Страница 49: ...ner operating at its best you should clean it periodically Before cleaning unplug the power cable Clean the outer case with mild detergent dissolved in water If the glass of the document table gets dirty clean it with a soft dry cloth If the glass is stained with grease or other hard to remove material use a small amount of glass cleaner on a soft cloth to remove it Wipe off any remaining liquid w...

Страница 50: ...nts This could permanently damage the mechanism and circuitry Do not spray lubricants inside the scanner Never open the scanner case Replacing the fluorescent lamps The luminosity of the fluorescent lamps declines over time If the lamps break or become too dim to operate normally the scanner stops working and both the READY light and the ERROR light flash When this happens the lamp assembly must b...

Страница 51: ...ion the back of the scanner Then turn off the scanner 2 Push the transportation screw and turn it clockwise to secure the carriage Note If the scanner is broken the carriage may not automatically return to the home position If it does not raise the front of the scanner and hold it in a vertical position until the carriage comes to rest at the back of the scanner Then perform Step 2 above 4 12 Trou...

Страница 52: ...ications 5 2 Electrical Specifications 5 4 Environmental Conditions 5 4 Parallel Interface Specifications 5 5 Timing charts 5 8 SCSI Specifications 5 9 Signal pin assignments 5 10 Initialization 5 11 Default settings 5 12 Technical Specifications 5 1 ...

Страница 53: ...inches US letter size or A4 400 dpi 50 72 75 80 90 100 120 133 144 150 160 175 180 200 216 240 300 320 360 400 480 600 and 800 dpi Values above 400 through software interpolation By switching light sources G R B Monochrome mode One time scanning Dropout color selectable from Green Red or Blue Color page sequence mode Three tune scanning G R B Color line sequence mode One time scanning G R B 50 to ...

Страница 54: ...lor line sequence mode 2 downloadable dither patterns 2 for CRT display 3 for printer 1 for user defined 1 type for CRT display 3 types for printer output available in color line sequence mode only Bidirectional parallel and SCSI Noble gas fluorescent lamps 3 lamps Main unit MCBF 100 000 cycles of carriage movements Width 368 mm 14 5 inches Depth 577 mm 22 5 inches Height 161 mm 6 5 inches Weight ...

Страница 55: ...ure Humidity Operating conditions Operation 40 F to 95 F 5 C to 35 C Storage 10 F to 150 F 20 C to 60 C Operation 30 to 80 without condensation Storage 20 to 85 without condensation Ordinary office or home conditions Extreme dust should be avoided Operation under direct sunlight or near a strong light source should be avoided Note Specifications are subject to change without notice 5 4 Technical S...

Страница 56: ...mat 8 bit parallel Synchronization Handshaking By external strobe pulse By ACKNLG and BUSY signals Logic level Input output data and interface control signals are TTL level compatible Connector type 36 pin Centronics type connector Connector pin arrangement 18 36 Technical Specifications 5 5 ...

Страница 57: ...ng terminal These signals represent information of bits 1 to 8 respectively Each signal is at a high level when data is logical 1 and low when it is logical 0 About a 12 microsecond pulse Low indicates that data has been received and that the scanner is ready to accept more data When this signal is high the scanner cannot receive data The signal is high 1 during data entry 2 during scanning 3 when...

Страница 58: ...e receiving terminal Twisted pair return signal ground level Not used Low indicates the direction is input CI Return denotes the twisted pair return to be connected at signal ground level For interface wiring be sure to use a twisted pair cable for each signal and to complete the connection on the return side These cables should be shielded and the ground connected to the chassis of the host compu...

Страница 59: ... bidirectional parallel interface as viewed from the scanner OUT from scanner to computer STROBE 0 BUSY I ACKNLG I DATA I DIR 0 IN from computer to scanner min 0 5 STROBE 0 BUSY I ACKNLG I DATA 0 min 0 5 p DIR 0 min 0 5 p input 5 8 Technical Specifications ...

Страница 60: ... phase COMMAND phase Logical Unit number is fixed to 0 and command link function is not supported DATA phase Data in phase Data out phase STATUS phase MESSAGE phase Includes MESSAGE IN phase and MESSAGE OUT phase ATTENTION condition RESET condition TTL level compatible As per ANSI X3 131 1986 Selectable from 0 to 7 with the rotary switch 8 and 9 should not be selected Two 50 pin connectors Technic...

Страница 61: ...ative to the scanner Signal I 0 GND Pin No 1 12 14 25 35 37 39 40 42 Description Ground NC 13 Not connected DB0 I O 26 Data bus 0 DB1 I O 27 Data bus 1 DB2 I O 28 Data bus 2 DB3 I O 29 Data bus 3 1 DB4 I O 30 Data bus 4 DB5 I O 31 Data bus 5 DB6 I O 32 Data bus 6 DB7 I O 33 Data bus 7 5 10 Technical Specifications ...

Страница 62: ...tions in three ways Hardware initialization 0 When the power is turned on 0 When the scanner receives an INIT signal at the parallel interface pin 31 goes low Software initialization 0 When the software command ESC initialize the scanner is received Technical Specifications 5 11 ...

Страница 63: ...ult Data format 1 bit pixel color Resolution 100 dpi Size 100 Reading area 850 x 1170 dots no offset Color mode Monochrome standard When the scanner is initialized the scanner terminates the scanning operation and the carriage returns to the home position rear of the scanner 5 12 Technical Specifications ...

Страница 64: ...Appendix Scanner Functions A 2 How the scanner works A 2 Scanner settings A 3 Appendix A 1 ...

Страница 65: ...scanner works The image is divided into a two dimensional matrix of tiny elements Each dot is called a pixel or picture element The sensor on the carriage scans a line of pixels and as the carriage moves the succeeding lines of pixels are scanned The values of the electrical current for pixels are then processed and converted into binary data that can be used by computer devices Images such as pho...

Страница 66: ...ch of them is explained in the following pages All of these functions are controlled by the software commands from your scanner software Function Available settings Resolution 23 settings from 50 to 800 dpi Size Data format 50 to 200 at 1 step 1 to 8 bits per pixel per color Color mode Color line sequence mode color page sequence mode and monochrome mode dropout color selectable Brightness Halfton...

Страница 67: ...atching resolution for your particular output device follow the guidelines in Chapter 3 The default value of the output resolution is 100 dpi Size or scale The size or scale function allows you to reduce or enlarge the size of the output image The value can be set in the range of 50 to 200 in increments of 1 When the size is set to 100 the image is scanned at the actual size for the current resolu...

Страница 68: ...the value increases more tones and colors can be captured in the scanned image In monochrome 1 bit pixel bi level data can represent only two levels of tones black 0 or white 1 With 2 bits pixel quad level data four levels of tones can be represented by the binary values of 00 01 10 and 11 Using 8 bits pixel corresponds to 256 shades of gray producing near photographic quality results In color the...

Страница 69: ...ixel color 8 grays 512 colors 4 bits pixel color 16 grays 4 096 colors 5 bits pixel color 32 grays 32 768 colors 6 bits pixel color 64 grays 262 144 colors 7 bits pixel color 128 grays 2D97 152 colors 8 biis pixel color 256 grays 16 777 216 colors 8 bits pixel 2 bits pixel 3 bits pixel 1 bit pixel A 6 Appendix ...

Страница 70: ...xel value chosen the larger the amount of image data becomes One of seven brightness levels can be chosen for scanning Medium is the normal setting It is better to use darker settings for line art or faint original images and to use lighter settings for darker original images The brightness can be combined with any other function The graph below shows the differences between the brightness setting...

Страница 71: ...he carriage reading green red and blue for every line This yields more accurate color separation Because the color for each pixel can be determined as soon as it is read the color correction function can be used Monochrome reading standard The scanner scans the document with one pass and reads the image in monochrome black and white In standard monochrome your scanner illuminates the document with...

Страница 72: ...inuous tones as you can see on pages 16 and 18 of the Color Image Scanner booklet You can choose various types of halftoning at the time you scan but it is nearly always best to choose halftoning of off or none and have the halftoning done by the image editing software or by the output device such as a laser printer The illustration on page 3 8 was scanned in gray scale with no halftoning and prin...

Страница 73: ...her patterns Note Usually your scanner software or printing method can perform the halftoning Therefore you should usually not use halftoning or dither patterns when you scan Halftoning mode A This is the standard halftoning mode The image is converted into a hard tone to produce a distinct image and is suitable for most purposes 1 and 2 bits pixel color Halftoning mode B With this mode the image ...

Страница 74: ...tone is expressed in 4 by 4 bayer dither pattern D Dither pattern B Halftone is expressed in 4 by 4 spiral pattern 0 Dither pattern C Halftone is expressed in 4 by 4 net screen dither pattern Cl Dither pattern D Halftone is expressed in 8 by 4 net screen dither pattern Appendix A 11 ...

Страница 75: ...rn C Dither pattern D Note Changing the size of a halftone processed image with your application software my degrade the image Instead use the scanner s size or scale function at the time of scanning to select your desired image size A 12 Appendix ...

Страница 76: ... Display A CRT Display B Darker Darker Image input Printer Output A Printer Output B Printer Output C Lighter Gamma correction provides five settings and can be combined with all other scanner functions Choose an appropriate setting from the five modes below 0 CRT Display A The output data is in proportion to the original image as shown in the above graph This setting is suited for most types of c...

Страница 77: ...rs and page printers The image is converted into a slightly darker image to compensate for the lower lighter density of such printers The image looks faint when viewed on a CRT display Q Printer Output C This setting is suitable for high contrast printing of images which contain both picture and text This setting gives higher contrast and more definition than either Printer Output A or B The dark ...

Страница 78: ...ore definition and colors can differ slightly depending on the printing methods or the types of ink used a a cl a CRT displays This setting compensates colors for the characteristics of color CRT displays Impact dot matrix printers This setting compensates colors for the characteristics of impact dot matrix color printers Thermal transfer printers This setting compensates colors for the characteri...

Страница 79: ...binary digit The smallest unit of data in computer processing A bit can represent two values on and off or 1 and 0 bit pixel The unit to indicate the number of bits allocated for a pixel The larger the value the more detail of a pixel is represented brightness A scanner function to lighten or darken the output image data A unit of information consisting of eight bits A byte can represent a control...

Страница 80: ...ors cyan magenta and yellow plus black are used for printing press separations default A set of values used when no other selections have been made dithering A process in which software or an output device simulates continuous tones with groups of dots document The physical item such as a sheet of paper or a book that you place on the document table for the scanner to read dpi Short for dots per i...

Страница 81: ...image gamma curve The graph that shows the contrast ratio between the input original image and output image data in image processing halftoning A data processing method of converting continuous tones into digital data so that the output data simulates the tones Used for bi level and quad level data home position The position at the back of the scanner where its carriage rests before a scanning ope...

Страница 82: ...tween or among computer devices line sequence A type of color scanning that separates primary colors line by line The carriage makes only one pass monochrome Black and white images or images represented only by the intensity of luminosity multi level data Image data that consists of more than one bit per pixel page sequence The type of color scanning in which the entire image is scanned once for e...

Страница 83: ...s resolved into pixels Measured in dots per inch dpi or pixels per inch ppi scan An operation performed by the sensor and the carriage The image is divided into pixels by scanning scanning area The physical size of the image that can be scanned by the scanner subtractive primary colors Primary colors that produce black when mixed in certain proportion These are yellow cyan and magenta In printing ...

Страница 84: ...to the paper with heat generated by a number of small heating elements threshold A value that is referenced to determine whether a certain value is larger or smaller The scanner uses a number of thresholds to convert an image into digital data GL 6 Glossary ...

Страница 85: ... 8 Choosing a place 1 2 Cleaning document table 4 10 scanner 4 10 Color 3 7 3 10 11 A 2 A 8 Color correction 3 12 A 14 15 GL 2 Color Image Scanner booklet 3 9 A 9 Color printing 3 13 4 9 Color separation 3 9 GL 2 Colors number of A 5 7 Compression file 3 14 Computer connecting to 2 2 8 Continuous tone 3 7 3 9 Contrast 4 7 Cord power 5 1 3 Correction color 3 12 A 14 15 GL 2 gamma 3 12 4 7 A 13 14 C...

Страница 86: ... 5 4 7 Format data 4 8 4 9 A 5 7 G Gamma correction 3 12 4 7 A 13 14 GL 3 Gray scale 3 7 3 10 A 5 7 Guidelines resolution 3 10 H Halftoning 3 12 4 8 A 9 12 GL 3 Hard disk 2 8 3 9 3 13 Help where to get 3 Home position 1 4 4 12 GL 3 Humidity 1 2 5 4 I IBM PS 2 2 2 Image distortion 4 5 7 Image type 3 6 7 Images continuous tone 3 7 gray scale 3 7 A 5 7 printed 3 7 Imagesetter 3 9 3 10 11 GL 3 Initial...

Страница 87: ...OCR 1 Options 1 Output resolution 5 2 P Page sequence 3 7 A 8 GL 4 Parallel interface 1 2 2 4 5 5 8 Photographs 3 5 3 7 8 A 9 Phototypesetter 3 9 Pin connections 5 5 5 10 Pixels 5 2 A 2 A 4 GL 5 Placement document 3 3 5 scanner 1 2 Plugging in 1 3 Position home 1 4 4 12 GL 3 POWER button 1 3 5 Power cord 5 1 3 Power on sequence 2 8 Ppi 3 10 5 2 Press printing 3 9 3 10 3 13 Primary colors A 14 GL 1...

Страница 88: ...quence line A 8 A 10 A 14 GL 4 page 3 6 A 8 A 14 GL 4 power on 2 8 Service bureau 3 9 Settings 3 6 12 Setup 1 1 5 Shielded cable 2 4 Size file 3 9 10 3 13 image 3 11 A 4 5 printed 3 11 Slides 1 Solutions 4 2 10 Space 1 2 Specifications 5 2 12 Switch SCSI ID number 2 6 5 9 T Table document 3 3 5 Technical specifications 5 2 12 Telephone toll free 3 Temperature 1 2 5 4 Terminator 2 7 Three pass 3 7 ...

Страница 89: ...Epson America Inc 20770 Madrona Avenue Torrance California 90503 Printed in Japan 92 C ...

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