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video cards

A video card that is sufficient for text may not be good enough

for displaying graphic images, especially in color. If all your

scanned images look coarse on your monitor, you may want to

upgrade your video card. You will need 24-bit color, also called

true color or millions of colors, for the best display of images.

The resolution of your monitor, of course, also affects the

quality of the image you see. Consider a high resolution

monitor if you 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 restored file is not exactly the same as the original. The

difference between the original and restored files is, however,

not always noticeable.

Scanner Basics 2-17

Содержание ES-1200C Pro PC

Страница 1: ...EPSON Scanner User s Guide ...

Страница 2: ...ter le scanner au secteur retlrez la vis de blocage pour le transport comme indique ci dessous ATENCION Antes de conectar el scanner a la toma de corriente afloje el tomillo de protection para el transporte tal coma puede ver en la ilustracion siguiente ATTENZIONE Prima di collegare lo scanner all alimentazione elettrica rimuovere la vite di bloccaggio come indicate nella figura sottostante Copyri...

Страница 3: ...ce rep en sur l illustration est propre Si ce n est pas le cas des lignes verticales noires peuvent apparaitre sur l image Si des lignes noires apparaissent nettoyer la glace avec un chiffon doux et propre NOTA IMPORTANTE Antes de empezar a explorar compruebe que la franja de cristal indicada en la ilustracibn este completa mente limpia Si no lo esta es posible que aparezca una lfnea vertical negr...

Страница 4: ...formation contained herein Neither is any liability assumed for damages resulting 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 modi...

Страница 5: ...ter le scanner au secteur retlrez la vis de blocage pour le transport comme indique ci dessous ATENCION Antes de conectar el scanner a la toma de corriente afloje el tomillo de protection para el transporte tal coma puede ver en la ilustracion siguiente ATTENZIONE Prima di collegare lo scanner all alimentazione elettrica rimuovere la vite di bloccaggio come indicate nella figura sottostante Copyri...

Страница 6: ...ce rep en sur l illustration est propre Si ce n est pas le cas des lignes verticales noires peuvent apparaitre sur l image Si des lignes noires apparaissent nettoyer la glace avec un chiffon doux et propre NOTA IMPORTANTE Antes de empezar a explorar compruebe que la franja de cristal indicada en la ilustracibn este completa mente limpia Si no lo esta es posible que aparezca una lfnea vertical negr...

Страница 7: ... p t h e S c a n n e r Choosing a Place for the Scanner Releasing the Transportation Screw Plugging in the Scanner Initialization Connecting the Scanner to the Computer Computer types Connecting the parallel interface SCSI SCSI connections Terminators Connecting the SCSI Power on sequence Installing Scanner Software 1 2 1 3 1 4 1 5 1 5 1 6 1 6 1 8 1 8 1 10 1 10 1 12 1 12 111 ...

Страница 8: ... Guidelines 2 9 4 Image type or mode 2 9 4 Resolution 2 10 d Size or scale 2 14 4 Halftoning and dropout 2 15 4 Brightness 2 15 4 Color correction 2 15 4 Gamma correction 2 15 4 Cropping 2 15 Judging Image Quality 2 16 Equipment 2 16 RAM and hard disk size 2 16 Accelerator boards 2 16 Video cards 2 17 Monitors 2 17 File compression software 2 17 Maintenance 2 18 Replacing the fluorescent lamps 2 1...

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

Страница 10: ...ilable to expand the versatility of your scanner For detailed information on the use of these options see the guides that come with the options Automatic Document Feeder 03813011 This option is designed primarily for optical character recognition OCR scanning With software that supports the ES 1200C and OCR you can stack up to 30 pages in the automatic document feeder and scan them automatically Y...

Страница 11: ...s must be followed carefully to avoid bodily injury e Cautions must be observed to avoid damage to your equipment Notes contain important information and useful tips on the operation of your scanner Where United States Users Can Get Help Epson America provides local customer support and service through a nationwide network of authorized EPSON dealers and Service Centers EPSON also provides the fol...

Страница 12: ...rrently a member of CompuServe you are eligible for a free introductory membership as an owner of an EPSON product This membership entitles you to Cl An introductory 15 credit on CompuServe P Your own user ID and password Q A complimentary subscription to CompuServe Magazine CompuServe s monthly publication To take advantage of this offer call 800 848 8199 in the United States and Canada and ask f...

Страница 13: ...he devices plugged into the extension cord does not exceed the cord s ampere rating Also make sure the total of all devices plugged into the wall outlet does not exceed 15 amperes l Except as specifically explained in this User s Guide do not attempt to service the scanner yourself l Unplug the scanner and refer servicing to qualified service personnel under the following conditions If the power c...

Страница 14: ...Plugging in the Scanner Initialization Connecting the Scanner to the Computer Computer types Connecting the parallel interface SCSI SCSI connections Terminators Connecting the SCSI Power on sequence Installing Scanner Software 1 2 1 3 1 4 1 5 1 5 1 6 1 6 1 8 1 8 1 10 1 10 1 12 1 12 Setting Up the Scanner 1 1 ...

Страница 15: ...ch Allow some space behind the scanner for the cables and make sure to place the scanner where you can easily unplug the power cord Also allow sufficient space above the scanner so that you can fully raise the document cover if necessary 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 sunlig...

Страница 16: ... facing you 2 Locate the round screw knob in the middle of the rear panel 3 Turn the screw counterclockwise as shown by the arrow If necessary turn the screw with a coin The screw has a built in spring so it pops out a little when it is released You cannot remove the screw Note You will need to screw in the transportation screw when you store or transport the scanner Setting Up the Scanner 1 3 ...

Страница 17: ... end into an appropriately grounded outlet as shown below 2 If any of the scanner s lamps come on press the OPERATE button to turn the scanner off Warning Whenever you turn of the scanner wait at least 10 seconds before turning it back on Rapidly turning it on and off can damage the scanner 1 4 Setting Up the Scanner ...

Страница 18: ...he 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 it still does not work as described see your dealer or call the EPSON Connection at 800 922 8911 Connecting the Scanner to the Computer Your scanner has both a bidirectional parallel interface and a SCSI Small Computer...

Страница 19: ... scanner s SCSI interface Q For a Macintosh computer you do not need to install a board in your computer you just connect your Macintosh to the scanner s SCSI interface To use an interface correctly you may need to change settings on the scanner computer or both The following sections explain how to set up and connect each type of interface Connecting the parrallel interface eCaution The scanner s...

Страница 20: ...nd 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 3 Connect the 36 pin end of the cable to the scanner then fasten the connector with the clamps on the sides of the connector Setting Up the Scanner 1 7 ...

Страница 21: ...is connected to the computer each of the other devices is connected to the previous device Each device has a SCSI ID number the computer is usually number 7 and each of the other devices must have a different number between 0 and 6 Also the first device and the last device in the chain not including the computer must have a terminator and no other device can have a terminator The SCSI on the scann...

Страница 22: ...SI ID of 2 change the ID number of the scanner to an unused number as described next 1 Locate the SCSI ID rotary switch on the rear panel of the scanner 2 To change the SCSI ID turn the small dial to the desired number Q Caution Do not set the SCSI ID to an ID number that is already assigned to another device The computer scanner and other devices will not function properly Setting Up the Scanner ...

Страница 23: ...CSI terminator turned on It is on if the switch is up If the scanner is in the middle of a daisy chain turn the terminator switch off Do not use an external terminator Connecting the SCSI Connect the scanner with the SCSI as follows 1 See that the scanner the computer and all other SCSI devices are turned off and unplugged from the power source 1 10 Setting Up the Scanner ...

Страница 24: ...f your computer or the other SCSI device Notes LI The SCSI port of the Macintosh is the larger port with the SCSI icon 3 over it CL If you are connecting the scanner to a SCSI device other than the computer use a cable with 5O pin connectors on both ends 4 The connection is now complete Connect the power cables 5 Always turn on the scanner and other external SCSI devices before you turn on your co...

Страница 25: ...nner 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 daisy chain may be left off if you don t plan to use them Installing Scanner Software Now that you have connected the scanner to your computer the next thing to do is install your scanner software Follow the instructions in the u...

Страница 26: ...cument cover 2 8 Scanner Setting Guidelines 2 9 4 Image type or mode 2 9 J Resolution 2 10 d Size or scale 2 14 4 Halftoning and dropout 2 15 4 Brightness 2 15 4 Color correction 2 15 4 Gamma correction 2 15 4 Cropping 2 15 Judging Image Quality 2 16 Equipment 2 16 RAM and hard disk size 2 16 Accelerator boards 2 16 Video cards 2 17 Monitors 2 17 File compression software 2 17 Maintenance 2 18 Rep...

Страница 27: ...t indicate the type of error ERROR light red Indicates when an error occurs Along with the READY light it indicates the type of error OPERATE 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 error in the scanning software This button may not work if two computers are connected to the sc...

Страница 28: ...apter 3 for details Responsible use of copyrighted materials Remember to respect the rights of copyright owners Don t scan published text or images without first checking the copyright status Placing a Document on the Scanner 1 Turn on the scanner by pressing the OPERATE button The OPERATE light comes on Scanner Basics 2 3 ...

Страница 29: ...er and see that the scanner s READY light has come on Open the document cover 3 Place the document on the document table with the side to be scanned down Make sure that the document is carefully aligned 2 4 Scanner Basics ...

Страница 30: ...om external light Always keep the document table clean See Maintenance later in this chapter for information on cleaning the scanner Avoid twisting the document cover when you open or close it Do not leave photographs on the document table for an extended period of time they may stick to the glass Do not place heavy objects on top of the scanner 5 Start the scanner software on the computer and fol...

Страница 31: ... can adjust it so that you can scan large or thick documents or other materials Raising the back of the document cover For thick documents or other materials you can raise the back of the document cover as shown below Then close the cover and scan 2 6 Scanner Basics ...

Страница 32: ...ts or other materials you can lift the document shelf into place as shown below After you have finished using the document shelf push in on the support of the shelf as shown below Then return the shelf to its former position Scanner Basics 2 7 ...

Страница 33: ...letely remove the document cover Just raise it completely then pull it off in the direction of the arrows in the illustration below Reattach the document cover reversing the procedure above Be sure to hold the cover in a vertical position as you slip its attachments into place 2 8 Scanner Basics ...

Страница 34: ...heck The first two are the most important Note Your software may use a somewhat different order or slightly different terminology 4 lmage type or mode For the best and most efficient scans you need to know which type of images you are scanning drawings black and white photographs or color photographs The corresponding terms used by scanning software are line art gray scale and color Line art This ...

Страница 35: ...ng with your scanner 4 Resolution The best resolution setting depends on the image type or mode line art gray scale or color and the printing method Read Printing methods and File size below then use the table on page 2 13 to find the resolution you should use Printing of display methods The best resolution to use depends on what type of output or printing method you will be using The usual printi...

Страница 36: ... typical quality of photographs printed on laser printers Laser printers with a resolution of 600 dpi produce much better results for photographs than 300 dpi laser printers as you can see below 300 dpi 6OOdpi Scanner Basics 2 11 ...

Страница 37: ...ing 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 making separations Your service bureau or printing company should also provide helpful information Computer screens require lower resolutions than most printers If your scanned image will be viewed only on...

Страница 38: ...is table shows the recommended resolutions in dots per inch or pixels per inch for the image types and printing or display 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 The resolution that you use to scan an image input resolution does not have to match the dots per...

Страница 39: ... per inch of your printing device Even though your service bureau may use an imagesetter with a 2400 dpi resolution a scan resolution of only 150 to 350 dpi will produce the highest quality gray scale or color images the imagesetter can print Similarly even though your laser printer may have a 300 dpi resolution a scan resolution of only 80 to 120 dpi give the best quality gray scale images it can...

Страница 40: ...l use 1 to 3 or to darken a light original use l to 3 Usually you should leave this setting at zero 4 Color correction Use the default or CRT display 4 Gamma correction Use the default or CRT Display B Note Your software may have different settings for Brightness Color correction and Gamma correction J Cropping If you know you are going to use only part of an original use your software s cropping ...

Страница 41: ...ay be sufficient for your scanning needs but if you are not satisified 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 42: ...ou see Consider a high resolution monitor if you 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...

Страница 43: ... document table Dust can cause white spots in your scanned image Warning Be careful not to get water on the scanner mechanism or electrical components Caution Do not scratch or damage the glass of the document table and do not use a hard or abrasive brush to clean it A damaged glass surface can decrease the scanning quality Never use alcohol thinner or corrosive solvent to clean the scanner These ...

Страница 44: ...r dealer 0 Warning Never open the case of the scanner If you think repairs or adjustments are necessary consult your dealer Transporting the Scanner When you transport the scanner a long distance or store it for an extended period follow the steps below to secure the carriage 1 Turn on the scanner and wait until the carriage moves to the home position the back of the scanner Then turn off the scan...

Страница 45: ... the carriage may not automatically return to the home position If fit does not raise the front of the scanner and hold it up until the carriage comes to rest at the back of the scanner Then perform Step 2 above 2 20 Scanner Basics ...

Страница 46: ...C h a p t e r 3 Troubleshooting Problems and Solutions 3 2 Indicator lights 3 2 Troubleshooting 3 1 ...

Страница 47: ...ur 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 ERROR Command error I On I On Interface error Fatal error Option error Off Flashing Flashing Flashing off Off Command error The scanner has received incorrect commands from your scanning software When this err...

Страница 48: ... is broken There is a problem such as an open cover with the optional transparency unit or the optional automatic document feeder Check that the transportation screw is released and check any options installed then push the RESET button If the scanner still does not operate properly try turning the scanner off and then back on If the scanner still does not operate properly or if this error occurs ...

Страница 49: ...the scanner s READY 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 w...

Страница 50: ...r may not have enough memory remaining gee your software and computer manuals Make sure that your software supports this model of scanner and that you correctly installed or set up the software gee 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 sc...

Страница 51: ...s around 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 edg...

Страница 52: ...Make the brightness setting darker 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 document table Tr...

Страница 53: ...Also check 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 gee your printer manual If this happens on both your screen and printout the scanner s sensor may be malfunctioning Consult your dealer When halftonin...

Страница 54: ...our screen gee your computer manual Exact matching of colors is very difficult Check the manuals for your software and your monitor for information on color matching and calibration 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 o...

Страница 55: ...ed or the printout is not an image Check that the printer is properly connected with the computer and is correctly set up See your printer manual Check that your software is properly installed and set up for your printer See your software manual 3 10 Troubleshooting ...

Страница 56: ... t i o n s Scanner Specifications 4 2 Electrical Specifications 4 4 Environmental Conditions 4 4 Parallel Interface Specifications 4 5 Timing charts 4 8 SCSI Specifications 4 9 Signal pin assignments 4 10 Initialization 4 11 Technical Specifications 4 1 ...

Страница 57: ...dpi 5 0 6 0 7 2 7 5 8 0 9 0 1 0 0 1 2 0 1 3 3 1 4 4 1 5 0 1 6 0 1 7 5 1 8 0 2 0 0 2 1 6 2 4 0 3 0 0 3 2 0 3 6 0 4 0 0 4 8 0 6 0 0 8 0 0 9 0 0 1 2 0 0 1 6 0 0 1800 and 2400 dpi Values above 600 through software interpolation By switching light sources G R B Monochrome mode One pass scanning Dropout color selectable from Green Red or Blue Color page sequence mode Three pass scanning G R B Color line...

Страница 58: ...nd D for bi level data Halftoning mode A only in color 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 1 type for user defined Bi directional parallel and SCSI Noble gas fluorescent lamps Main unit MCBF 100 000 cycles of carriage movements Width 383 mm 1...

Страница 59: ... e r a t u r e H u m i d i t y O p e r a t i n g c o n d i t i o n s Operation 40 F to 95 F 5 C to 35 C Storage 13 F to 140 F 25 C to 60 C Operation 10 to 80 without condensation Storage 10 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 ch...

Страница 60: ...l S y n c h r o n i z a t i o n H a n d s h a k i n g Logic level C o n n e c t o r t y p e By external strobe pulse By ACKNLG and BUSY signals Input output data and interface control signals are TTL level compatible 36 pin Centronics type connector C o n n e c t o r p i n a r r a n g e m e n t 18 1 Technical Specifications 4 5 ...

Страница 61: ...er is ready to accept more data When this signal is hlgh the scanner cannot receive data The signal is high 1 during data entry 2 during scanning 3 when the scanner is not ready 4 when the scanner has an error Not used Logical ground level Scanner chassis ground Not used GND C GND NC STROBE pulse to read In or send Out data Pulse width must be more than 0 5 microseconds at the receiving terminal T...

Страница 62: ...re than 50 microseconds a the receiving terminal Not used Twlsted pair return slgnal ground level IN Not used Low indicates the direction is input Q 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 con...

Страница 63: ...onal parallel interface as viewed from the scanner OUT from scanner to computer STROBE 0 BUSY I ACKNLG I DATA I DIR 0 JN from computer to scanner STROBE 0 BUSY I ACKNLG I IJS DATA I mln 0 5 l JSh 1 mln 0 5 p DIR 0 min 0 5 PS 4 8 Technical Specifications ...

Страница 64: ...ported DATA phase Data in phase Data out phase STATUS phase MESSAGE phase MESSAGE IN phase MESSAGE OUT phase ATTENTION condition RESET condition Logic level TTL level compatible Electrical standard As per ANSI X3 131 1986 ID Setting Selectable from 0 to 7 and 9 with the rotary switch 8 should not be selected and 9 is for the ES 300CW emulation mode Connector type Two 50 pin connectors Connector pi...

Страница 65: ... O 1 Fin No I Descrlptlotl I I O I O I O 1 12 14 25 35 37 39 40 42 13 26 27 Ground Not connected Data bus 0 Data bus 1 28 1 DotabusP DB3 I O 29 Data bus 3 DB4 I O 30 Data bus 4 DB5 I O 31 Data bus 5 MSG 0 46 Message SEL I O 47 Select C D 0 48 Control Data 49 1 Request I 50 I Input Output I 4 10 Technical Specifications ...

Страница 66: ...er is turned on Q When the scanner receives an INIT signal at the parallel interface pin 31 goes low Q When the scanner receives a SCSI Reset signal at the SCSI interface Software initialization Q When the software command ESC initialize the scanner is received CI When the SCSI Bus Device Message is received Technical Specifications 4 11 ...

Страница 67: ...d in this chapter Saving a Scanned Image before you export an image you need to save it in its original EPSON Scan II format Otherwise you will not be able to retrieve it again in EPSON Scan II Follow these steps 1 Start EPSON Scan II if necessary 2 Select Acquire from the File menu 3 Select Scan to scan your image 4 Choose Save AS from the File menu You see the following dialog box File Name i rl...

Страница 68: ...ng an Image EPSON Scan II allows you to export an image in a file format your application software can use For information on file formats your software can open see your software manual Note Your application software cannot open images saved in the EPSON Scan Zlfilejimnat and EPSON Scan ZZ cannot open an exported imagefile Always save an image in EPSON Scan II before exporting Follow these steps ...

Страница 69: ...Scan II allows you to choose the image quality Since JPEG uses a Lossy compression scheme selecting higher quality gives you less compression To choose the image quality move the Quality slide bar to the desired setting 6 Choose OK The image is saved in the selected file format You can now import this file into your application software see your software manual for instructions Acquiring and Expor...

Страница 70: ...rectory and drive where you want to save the exported image 5 Type a filename for your image in the File Name field 6 You can choose one of these formats from the File Format menu DIB TIFF5 0 TIFF6 O JPEG JPEG and EPSF For a description of these file formats see the Term Glossary Note You can select TIFF6 0 JPEG and JPEG formats only if you selected 16 Million Colors for the Pixel Depth setting in...

Страница 71: ...the image quality move the Quality slide bar to the desired setting 8 Choose OK The image is scanned and exported in the selected file format You can now import this file into your application software see your software manual for instructions Exiting EPSON Scan II To exit EPSON Scan II make sure you have saved or exported your image file Then choose Exit from the File menu Saving and Exporting Im...

Страница 72: ...Appendix Scanner Functions A A 2 How the scanner works r A 2 Scanner settings A 3 Appendix A l ...

Страница 73: ... works The image is divided into a two dimensional matrix of tiny elements Each element 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 photog...

Страница 74: ...e controlled by the software commands from your scanner software Funciian Avciilable wfflngs Resolution 29 settings from 50 to 2400 dpi size 5O to2CXXat l step Data format Color mode 1 to 8 bits plxel cobr Captures up to 10 bits pixel color When lt captures over 8 bits it converts the information to 8 blts pbel color Color line sequence mode color page sequence mode and monochrome mode dropout col...

Страница 75: ...nes in Chapter 2 Size of 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 lOO the image is scanned at the actual size for the current resolution The size values determine the vertical and horizontal lengths of the image When the size is set to 200 the image is enla...

Страница 76: ...of the three primary colors of green red and blue One bit pixel color can represent eight colors 2 x 2 x 2 and 2 bits pixel color can represent 64 colors 4 x 4 x 4 Eight bits pixel color total 24 bits for a pixel can represent over 16 million colors The scanner can read up to 10 bits pixel color Above 8 bits pixel color the scanner converts the image data to 8 bits pixel color and sends it to the ...

Страница 77: ...t do this and are limited to monochrome without gradations or to 8 or 16 or 256 colors The data format chosen also affects the amount of data necessary for scanning and storing an image The larger the bits per pixel 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 A 6 Appendix ...

Страница 78: ...or darker original images The brightness can be combined with any other function The graph below shows the differences between the brightness settings when the gamma correction is set for the CRT Display A setting Data Ughtestl tiing Normal center Darkest setting Darker Y Lighter image input Appendix A 7 ...

Страница 79: ...the 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 staruiard The scanner scans the document with one pass and reads the image in monochrome black and white In standard monochrome the scanner Gminates the document with t...

Страница 80: ...page 2 11 of this manual If the dots are fine enough however the printed image appears to have continuous tones as you can see on the cover of this manual You can choose various types of halftoning at the time you scan but it is nearly always best to choose the halftoning setting off or none and have the halftoning done by the image editing software or by the output device such as a laser printer ...

Страница 81: ...r patterns Note Usually your scanner software or printing method can pe rm the halftoning Therefore you should usually not use haljbning or dither patterns when you scan 0 Halfloning 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 Q Hdjloning mode B With this mode the image is...

Страница 82: ...ftone is expressed in 4 by 4 bayer dither pattern Dither pattern B Halftone is expressed in 4 by 4 spiral pattern Dither pattern C Halftone is expressed in 4 by 4 net screen dither pattern Dither pattern D Halftone is expressed in 8 by 4 net screen dither pattern Appendix A 11 ...

Страница 83: ...tern C Dither pattern D Note Changing the size of a halftone processed image with your application software may grade the image Instead use the scanner s size or scalefunction at the time ofscanning to select your desired image size A 12 Appendix ...

Страница 84: ... below Data Lighter I CRT Display A CRT Display B Printer Output A Printer Output B Printer Output C Darker Lighter Image input Gamma correction provides five settings and can be combined with all other scanner functions Choose an appropriate setting from the five modes below P CRT Display A The output data is in proportion to the original image as shown in the above graph This setting is suited f...

Страница 85: ...compensate for the lower lighter density of such printers The image looks faint when viewed on a CRT display 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 and light parts of images are accentuated by this method C o l o r o f c o r r...

Страница 86: ...This setting compensates colors for the characteristics of impact dot matrix color printers Q Thermal transfer printers This setting compensates colors for the characteristics of thermal transfer color printers Q Ink jet printers This setting compensates colors for the characteristics of ink jet color printers Appendix A 15 ...

Страница 87: ...ark bit Short for 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 r...

Страница 88: ...ry colors cyan magenta and yellow plus black are used for printing press separations 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 Short for dots per inch A ...

Страница 89: ... similar to the original 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 patterns of dots so that the output data simulates the tones home position The position at the back of the scanner where its carriage rests before a scanning operation A ...

Страница 90: ...ter devices A type of color scanning that separates primary colors line by line The carriage makes only one pass Black and white images or images represented only by the intensity of luminosity The type of color scanning in which the entire image is scanned once for each separation color Short for picture element Each image is composed of a number of pixels Pixels are also counted in units of dots...

Страница 91: ...riage 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 cyan magenta and yellow In printing black is often added to give more definition because mixing of actual inks cannot produce pure black A value that is referenced t...

Страница 92: ...canner 2 18 Color 2 10 2 13 14 A 2 A 8 Color correction 2 15 A 14 15 Color printing 2 16 3 9 Color separation 2 12 Colors number of A 5 7 Compression file 2 17 Computer connecting to 1 5 12 Continuous tone 2 10 2 12 Contrast 3 7 Cord power 4 1 4 Correction color 2 15 A 14 15 gamma 2 15 3 7 A 13 14 Cover document 1 5 2 4 5 Cropping 2 15 D Daisy chain 1 8 1 10 1 12 Darkness 2 15 3 7 A 6 7 Data forma...

Страница 93: ...ition 1 5 2 19 20 Humidity 1 2 4 4 I IBM PS 2 1 6 Image distortion 3 5 7 Image type 2 9 10 Images continuous tone 2 10 2 12 gray scale 2 10 A 5 7 printed 2 9 11 Imagesetter 2 12 2 13 14 Initialization 1 5 4 11 Ink jet 2 10 Interface parallel 1 5 7 4 5 4 8 SCSI 1 8 1 11 4 9 Interface cable 1 5 7 J Jagged lines 3 7 Lamps 1 5 2 19 4 3 Laser 2 10 12 Light ERROR 2 2 2 19 3 2 READY 1 5 2 2 2 19 3 2 3 4 ...

Страница 94: ...er cord 4 1 4 Power on sequence 1 12 Ppi 2 13 4 2 A 4 Press printing 2 12 2 13 2 16 Printed size 2 14 4 9 Printer dot matrix 2 10 A 14 15 electronic 2 10 12 A 13 14 laser 2 10 12 Printing method 2 10 12 Printing press 2 12 2 13 2 16 Problems and solutions 3 2 10 Proofs 2 12 2 16 PS 2 1 6 Q Quality image 2 16 R RAM 2 16 READY light 1 5 2 2 2 19 3 2 3 4 Releasing transportation screw 1 3 Removing do...

Страница 95: ...nted 2 14 Slides 1 Solutions 3 2 10 Space 1 2 Specifications 4 2 12 Spi samples per inch A 4 switch SCSI ID number 1 9 4 9 V Video card 2 17 W Weight 4 3 Where to get help 2 T Table document 2 5 2 18 Technical specifications 4 2 11 Temperature 1 2 4 4 Terminator 1 10 Timing interface 4 8 Tone continuous 2 10 2 12 Transparency unit 1 Transportation screw 1 3 2 19 Transporting scanner 2 19 Troublesh...

Страница 96: ...E p s o n A m e r i c a I n c 20770 Madrona Avenue Torrance California 90503 ...

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