EPSON ® Scanner User’s Guide
CAUTION: Before connecting the scanner to a power source, release the transportation Screw as shown in the figures below. ACHTUNG: Bevor Sie den Scanner ans Netz anschlieBen, l&en Sie bitte die Transport-Sicherungsschraube wie in den folgenden Abbildungen dargestellt. ATTENTION: Avant de connecter le scanner au secteur, retlrez la vis de blocage pour le transport comme indique ci-dessous.
Note: Before scanning, make sure the strip of glass shown in the illustration is completely free of dust or dirt. If it is not, a black vertical line may appear in the scanned image. If this happens, wipe the glass with a soft, clean cloth. Hinweis: Stellen Sie vor jedem Scanvorgang sicher, daf3 das in der Abbildung markierte Glasfeld absolut sauber und staubfrei ist, da auf dem gescannten Bild ansonsten eine schwarze vertikale Lit-tie auftreten kann.
A Note Concerning Responsible Use of Copyrighted Materials Like photocopiers, scanners can be misused by improper copying of copyrighted material. Although Section 107 of the U.S. Copyright Act of 1976 (Title 17, United States Code), the “fair use” doctrine, permits limited copying in certain circumstances, those circumstances may not be as broad as some people assume.
CAUTION: Before connecting the scanner to a power source, release the transportation screw as shown in the figures below. ACHTUNG: Bevor Sie den Scanner ans Netz anschlieBen, l&en Sie bitte die Transport-Sicherungsschraube wie in den folgenden Abbildungen dargestellt. ATTENTION: Avant de connecter le scanner au secteur, retlrez la vis de blocage pour le transport comme indique ci-dessous.
Note: Before scanning, make sure the strip of glass shown in the illustration is completely free of dust or dirt. If it is not, a black vertical line may appear in the scanned image. If this happens, wipe the glass with a soft, clean cloth. Hinweis: Stellen Sie vor jedem Scanvorgang sicher, daf3 das in der Abbildung markierte Glasfeld absolut sauber und staubfrei ist, da auf dem gescannten Bild ansonsten eine schwarze vertikale Lit-tie auftreten kann.
Contents Options . . . . . . . . . . . . . . . . . . . . How to Use This ManuaI . . . . . . . . . . Warnings, Cautions, and Notes . . . . . . Where United States Users Can Get Help . CompuServe On-Line Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 2 2 3 Chapter 1 Setting Up the Scanner Choosing a Place for the Scanner . . . . . Releasing the Transportation Screw . . . Plugging in the Scanner . . . . . .
Chapter 2 Scanner Basics Lights and Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Scanner errors . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 Responsible use of copyrighted materials . . . . . . . . . . 2-3 Placing a Document on the Scanner . . . . . . . . . . . . . . . . 2-3 Scanning Large or Thick Documents . . . . . . . . . . . . . . . . 2-6 Raising the back of the document cover . . . . . . . . . . . 2-6 Using the document shelf . . . . . . . . . . . . . . . . . . .
Chapter 4 Technical Specifications Scanner Specifications Electrical Specifications .......................................................... Environmental Conditions . . . . . . . . . . . . . . . . . . . . . Parallel Interface Specifications . . . . . . . . . . . . . . . . . . Timing charts . . . . . . . . . . . . . . . . . . . . . . . . . . SCSI Specifications . . . . . . . . . . . . . . . . . . . . . . . . . Signal pin assignments . . . . . . . . . . . . . . . . . . . . Initialization . . . . . . . . .
introduction The EPSON® ES-12OOC is a true 600 dpi full-color flatbed image scanner with an A4 size scanning area. It has the ability to scan in color or gray-scale monochrome, making it ideal for virtually all uses, from simple drawings to complex full-color illustrations. It achieves extremely high quality in color by reading 30 bits per pixel and saving 24 bits per pixel. Options The following optional items are available to expand the versatility of your scanner.
How to Use This Manual Chapter 1 describes setting up your scanner and connecting it to your computer. Be sure to read this first. Chapter 2 gives basic information on using your software and scanner, including maintenance and transportation Chapter 3 contains troubleshooting information, and Chapter 4 and the Appendix provide technical information. See the end of this guide for a glossary of scanner terms and an index.
tl EPSON technical information library fax service P Product literature with technical specifications on our current and new products Ll Sales of supplies, parts, documentation, and accessories for your EPSON product cl Customer Relations ® CompuServe On-tine Support The fastest way to access helpful tips, specifications, drivers, application notes, and bulletins is through the Epson America Forum on CompuServe.
Important Safety Instructions Read all of these instructions and save them for later reference. Follow all warnings and instructions marked on the scanner. l l l l l l l l l l Unplug the scanner before cleaning. Clean with a damp cloth only and do not use liquid or aerosol cleaners. Do not spill liquid on the scanner. Do not place the scanner on an unstable surface or near a radiator or heat register. Do not block or cover the openings in the scanner’s cabinet.
Chapter 1 Setting Up the Scanner . . . . . . . . . . . . . . . . . 1-2 . . . . . . . . . . . . . . . 1-3 . . . . . . . . . . . . . . . . . . . . . . 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Connecting the Scanner to the Computer . . . . . . . . . . . . Computer types . . . . . . . . . . . . . . . . . . . . . . . . Connecting the parallel interface . . . . . . . . . . . . . . 1-5 1-6 1-6 SCSI . . . . . . . . . . . . . SCSI connections . . . Terminators . . . . . .
Choosing a Place for the Scanner You should consider the following when selecting a location for your scanner: Place the scanner on a flat, horizontal, stable surface. If the scanner is tilted or at an angle, it cannot operate properly. Place the scanner close enough to the computer for the cable to reach. Allow some space behind the scanner for the cables, and make sure to place the scanner where you can easily unplug the power cord.
Releasing the Transportation Screw Before connecting the scanner to a power source, you must release the transportation screw. 1. Place the scanner on a flat, stable surface so that its rear panel is 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.
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. 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.
In this step you observe the scanner’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 OPERATE button. When the scanner is initializing, the fluorescent lamps on the carriage flash and the carriage’s position is reset.
Computer types 0 For a PC-compatible computer, do one of the following: Install a bi-directional parallel interface board in your computer. Then connect the computer to the scanner’s bidirectional interface. Note: IBM® PS/2® computers and some other 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. Install a SCSI board in your computer.
Use a standard shielded parallel interface cable. 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. 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.
SCSI For some computers, you first install a SCSI board in your computer. Then follow the directions below to connect your scanner and computer. All Macintoshes have SCSI ports; you do not need to install a SCSI board in the computer. Follow the directions below to connect the scanner to your Macintosh SCSI connections The SCSI interface allows you to connect up to eight devices, including the computer, in what is called a daisy-chain arrangement.
SCSI ID number setting The factory set SCSI ID of the scanner is 2. The computer is usually ID number 7. If you are going to add the scanner to a system in which one of your SCSI devices already has a SCSI 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.
The scanner has a built-in terminator. If the scanner is the only SCSI device you connect to your computer or if it is the last device in the daisy chain, leave the internal SCSI 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.
2. Connect the 50-pin end of the cable to either the top or bottom SCSI connector of the scanner; then fasten the connector with the clamps on the sides of the connector, as shown. 3. Connect the other end of the cable to the SCSI port of 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.
Power-on sequence Follow these instructions for the power-on sequence each time you turn your computer and SCSI devices on. 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.
Chapter 2 Scanner Basics Lights and Buttons . . . . . . . . . . . . . . . . . . . . . . . . . Scanner errors . . . . . . . . . . . . . . . . . . . . . . . . . Responsible use of copyrighted materials . . . . . . . . . 2-2 2-3 2-3 Placing a Document on the Scanner . . . . . . . . . . . . . . . . 2-3 Scanning Large or Thick Documents . Raising the back of the document Using the document shelf . . . . . Removing the document cover . . . . . . cover. . . . . . . . . . . . . . . . . . . . . . . . . . .
Lights and Buttons The scanner has three indicator lights and two buttons. lights button button OPERATE light (green) Comes on when the scanner is turned on. READY light (green) Comes on when the scanner is ready to scan images. This light flickers during scanning. When an error occurs, it and the ERROR light 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.
Scanner errors If an error occurs, the scanner stops operating and the READY and ERROR lights show the type of error. See Chapter 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.
2. Turn on the computer 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.
4. Close the document cover gently so that the aligned document is not moved. Note: Make sure that the document is flat against the glass surface so that the image is properly focused. Also make sure to close the document cover. This prevents interference from 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.
Scanning Large or Thick Documents Your scanner has three ways you 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.
Using the document shelf For wide documents 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.
Removing the document cover For especially difficult documents or other materials, you can completely 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.
Scanner Setting Guidelines This overview of scanner settings will give you a little background for using your scanning software. The messages on the screen and your software manual should be your main guide to scanning, but this section can supplement your understanding of your software’s on-screen menus. Each 4 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.
scale (also called monochrome or continuous tone This is the setting for black and white photographs and drawings with various shades of gray in addition to black and white. You can also use this setting for color photographs that will be printed in black and white. Gray color This is the setting for color photographs or other originals in color. Note: Scans from photographs are better than scans from published images, such as newspaper or magazine pictures, because of half toning conflicts.
The examples below show the 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.
D Electronic color printers use laser, ink jet, or other technologies to produce color or gray scale images that range from coarsely patterned to nearly photographic (often called continuous tone) quality. It is best to see samples from a color printer before you decide to use it. These printers are usually used for small quantities of color images or for preliminary proofs of images that will be printed on a printing press. Li Printing presses are for high quality and high volume work.
Large files use up your computer and hard disk memory; they take longer to process, to print, or to transmit by modem; and they are more difficult to save to a disk for sending to a service bureau or printing company. Many printing methods cannot use all of the information stored in a high-resolution scan, so in these cases part of the information is wasted.
Here’s how to calculate more precisely the required resolution for gray scale or color on an electronic color printer or a printing press: 1. Find out the lines per inch of the printing method. This is the measurement of resolution for high quality image printing. Do not confuse it with dots per inch, which is not an equivalent measurement. 2.
4 Halftoning and dropout For nearly all uses, none is the best setting for these. In case you have special needs that require halftoning at the time of scanning, see the Appendix for technical information on halftoning, dithering, and dropout. d Brightness The minus numbers lighten the image, the plus numbers darken the image. To lighten a dark original use -1 to -3, or to darken a light original use +l to +3. Usually you should leave this setting at zero.
Judging lmage Quality When you look at your monitor to evaluate a scanned image, remember that the image will look different when it is printed. A monitor is a comparatively low-resolution device; some images that look good on a monitor do not look as good when printed and vice versa. Keep in mind the final output device as you choose settings and manipulate the image. In addition, each output device may produce different results.
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.
Maintenance To keep your scanner 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-toremove material, use a small amount of glass cleaner on a soft cloth to remove it. Wipe off any remaining liquid with a dry cloth.
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 be replaced. For details, contact your dealer. 0 Warning: Never open the case of the scanner. If you think repairs or adjustments are necessary, consult your dealer.
Note: If the scanner is broken, 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.
Chapter 3 Troubleshooting Problems and Solutions . . . . . . . . . . . . . . . . . . . . . . . Indicator lights . . . . . . . . . . . . . . . . . . . . . . . . .
Problems and Solutions The problems you may have while using the scanner often involve the operation of your software and computer. Problems fall in the following major categories: U Incorrect setup of the interface U Inappropriate selection of the scanner functions P Incorrect setup of your computer or software Q Incorrect operation of your software. Also see the documentation that came with your software, computer, and printer for possible solutions.
lnterface error The interface setup is wrong, or the scanner is not properly connected to the computer. When this error occurs, check the interface connection Then push the RESET button or turn the scanner off and then back on to reset it. Fatal error This indicates one of the following problems: One or more fluorescent lamps needs to be replaced. The transportation screw is not released. The scanner is broken.
The OPERATE light does not come on. Make sure the power cable is correctly plugged into the scanner and the power outlet. The READY light does not come on. Make sure the scanner is correctly connected to the computer and that the computer is turned on. The scanner does not start scanning. See that 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.
The scanner software does not work properly. Be sure you have correctly installed your software. Check that the system requirements, such as the operating system version, are correct for using your software. See if the computer has enough memory for your software. If you are running other software at the same time, using RAM resident programs, or have many device drivers, the computer may not have enough memory remaining. (gee your software and computer manuals.
Part of the image is distorted or blurred. Part of the document may be wrinkled, warped, or not in contact with the document table (the glass area). Be sure the document is uniformly flat. e Caution: Do not place heavy objects on the document table. The edges of the document are not scanned. The document table has non-readable areas 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.
The image is faint or out of focus. Check that the document is placed flush against the document table. Check your gamma correction setting. If it is set for printer, the image looks lighter when displayed on a monitor. 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.
The image does not look the same as the original. Try different settings and combinations of the scanner functions. Check that your software is correctly installed. Check the capability of your software and computer. (gee your software and computer manuals.) If you are importing an image file into your application software, see if the file format is acceptable for your software. Also check that the settings of your application and your image match (See your software manual.
The color on the display seems different from that of the original image. Check the settings of the scanner functions, especially data format (bits/pixel/color), gamma correction, and color correction. Try a different combination of these settings. Check the capability of your computer, display adapter, and software. Some computers can change the color palette to adjust colors on your screen. (gee your computer manual.) Exact matching of colors is very difficult.
The image cannot be printed on the printer, the printout is garbled, 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.
Chapter 4 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . 4-2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . 4-4 Environmental Conditions . . . . . . . . . . . . . . . . . . . . . 4-4 Scanner Specifications Parallel Interface Specifications . . . . . . . . . . . . . . . . . . 4-5 Timing charts . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8 SCSI Specifications . . . . . . . . . . . . . . . . . . . . . . . . . Signal pin assignments . . . . . . .
Scanner Specifications Scanner type: Flatbed, color /monochrome Photoelectric device: CCD line sensor Effective pixels: 5096 dots by 7016 dots at 600 dpi, 100% Maximum document size: 216 mm by 297 mm (8.5 inches by 11.7 inches) US letter size or A4 Scanning resolution: 600 dpi Output resolution: 50,60,72,75,80,90,100,120,133,144, 150,160,175,180,200,216,240,300,320, 360,400,480,600,800,900,1200,1600, 1800, and 2400 dpi. Values above 600 through software interpolation.
Maximum reading in pixels: 16128 (main scan) Halftoning process: Enable/disable selectable.
Eletrical Specifications Rated voltage: 120 VAC or 220 to 240 VAC Rated frequency: 50 to6OHz Power consumption: Approx. 45 W Insulation resistance: 10 MC2 between AC power line and chassis at5OOVDC Environmental Conditions Temperature: Operation: 40” F to 95” F (5” C to 35” C) Storage: -13” F to 140” F (-25” C to 60” C) Humidity: Operation: 10% to 80%, without condensation Storage: 10% to 85%, without condensation O p e r a t i n g c o n d i t i o n s : Ordinary office or home conditions.
Parallel lnterface Specifications lntefface type: Bi-directional parallel interface Data format: 8-bit parallel Synchronization: By external strobe pulse Handshaking: 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 1 Technical Specifications 4-5
Signal pin assignments Pin No. R&urn pin Slgnal Dlrectlan Function 1 19 STROBE INAOUT) STROBE pulse to read In or send Out data. Pulse width must be more than 0.5 microseconds at the receiving terminal. 2 3 4 5 6 7 8 9 m 21 22 23 24 25 26 27 DATA0 DATA1 DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT IN/OUT These slgnals 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 loglcal 0.
Slgnal pln assignments (continued) F Pin No. ROtUfIl pin Signal DIrectIon Function 19-30 19-30 - - - Twisted pair return signal ground level 31 - INIT IN When this signal level becomes low. the scanner ls reset to the state when power Is turned on. This level is usually High. The pulse width must be more than 50 microseconds a? the receiving terminal.
The figures below show the timing for the b&directional 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) DATA (I) IJS >< mln 0.5 l.JSh 1 DIR (0) 4-8 Technical Specifications mln 0.5 p min 0.
SCSI Specifications lnterface type: ANSI X3.131-1986 standard Function: The following functions are included. BUS FREE phase ARBITRATION phase SELECTION/RESELECTION 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 MESSAGE IN phase MESSAGE OUT phase ATTENTION condition RESET condition Logic level: TTL level compatible Electrical standard: As per ANSI X3.
Signal pin assignments In this table, the direction of the signals is given relative to the scanner. I---1 Signal I/O 1 Fin No.
Initialization The scanner can be initialized (returned to a fixed set of conditions) in three ways. Hardware initialization: Cl When the power 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.
Chapter 5 Saving and Exporting Images You can always scan an image using your TWAIN-compliant image editing application. However, if your application is not TWAIN-compliant, you can use EPSON Scan! II to scan the image and export it in a format your application can open, as described 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.
5. Choose the drive and directory where you want to save the image. 6. Type a filename for your image in the File Name field. Make sure to use the file extension .ORG. 7. Choose OK. The image is saved in the EPSON Scan! II file format. You can now open this file and export it with a different format, as described below. Exporting an Image EPSON Scan! II allows you to export an image in a file format your application software can use.
2. Choose the drive and directory where you want to save the image. 3. Type a filename for your image in the File Name field. 4. 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 the Image Type dialog box when you scanned the image. 5. If you selected the TIFF6.
Follow these steps: 1. Start EPSON Scan! II, if necessary. 2. Choose Acquire and Export from the File menu. You see the TWAIN screen. (If you see the easy screen, click Advanced.) 3. Choose Scan. You see the following dialog box: I Rlrectorles: ciepeccan2 Rle &me: I ccl 0 epscm2 tl I M 4. Choose the directory 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.
7. If you selected the TIFF6.0(JPEG) or JPEG format, EPSON Scan! II allows you to choose the image quality. Since JPEG is 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. 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.
Appendix Scanner Functions . . . . . . . . . . . . . . . . . . . . . . . . . . How the scanner works . . . . . . . . . . . . . . . . . . . . Scanner settings . . . . . . . . . . . . . . . . . . . . . . . .
Scanner Functions Various image processing functions are built into your scanner. They are briefly described in Chapter 2. This Appendix contains fuIler, more technical, information All functions must be controlled from the scanner software, and most functions can be combined with others to produce a variety of effects. Note: Because allfunctions must be wntrolled$!om scanner sofware, not all the scannerfunctions may be available, or the range of the settings may be limited.
The data produced by the scanner needs to be reproduced to be seen as an image. This is done, for example, by displaying the image data on a computer screen or printing it on a printer. The same image data can appear different depending on how it is reproduced. The various scanner functions aid in providing optimum reproduction results by adjusting the way the image is captured and converted into image data.
The output resolution determines how many pixels are used for scanning and reproducing an image. Resolution is measured in units of dpi (dots per inch), spi (samples per inch), or ppi (pixels per inch). (AU are equivalent units of measure.) As the resolution value increases, the image is read and reproduced in finer detail. At 600 dpi, for example, an image of one square inch is represented by 360,000 dots. The 29 resolution settings allow you to choose the best resolution for most types of printers.
Data fomat The data format specifies the number of bits used to represent the tone of a pixel. The data format can be set in the range of 1 bit to 8 bits per pixel per color. As the value increases, more tones and colors can be captured in the scanned image. In monochrome, 1 bit/pixel @-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, 91,lO and 11.
8 bits 2 bits 1 bit To reproduce an image of more than 2 bits/pixel/color the output device should be capable of producing the same tones. Many displays and printers cannot 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.
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 settings when the gamma correction is set for the CRT Display A setting.
Color mode The color mode specifies color reading or monochrome reading. In color reading, you can choose either page sequence reading or line sequence reading. In monochrome reading a dropout color can be specified (green, red, or blue). Color page sequence reading The scanner scans the document three times (one each for green, red, and blue), and produces three pages of image data that combine to give full color image data.
Halftoning is a process of changing an image to a pattern of dots. This is required because a printing press produces images in a different way than photography does. Photographs have an almost infinite number of tones, with an almost infinite number of colors for color photographs, but printing uses only individual single-color dots. Black and white images use black dots, and color images use only four colors of dots: cyan (blue-green), magenta, yellow, and black.
You can select from three types of halftoning, as well as enable or disable the halftoning process itself. When halftoning is disabled, the tones that the data can represent are determined by the data format. Halftoning is not available when 3 bits/pixel/color or more are selected as the data format, since halftoning is not necessary for such data. Halftoning modes B and C are not available with color line sequence reading.
Halftoning mode A Haljbning mode B Halfoning mode C NOW Dither pattern A Halftone 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.
Dither pattern A Dither pattern B Dither pattern 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.
This function adjusts the light intensity ratio between the original image and the output data. It brings out more detail in areas of both highlight and shadow. When the image is reproduced on certain types of output devices, the tones of the image will be closer to those of the original.
CRT Display B This setting is suited for analog-input CRT displays which can display an image with multiple levels of tones of more than 1 bit/pixel/color (y = 1.8). This is usually the best setting. Printer Output A This setting is suitable for highdensity printers, such as 24-dot printers and some page printers. The image is converted into a lighter image to compensate for the higher (darker) density of such printers. The image looks faint when viewed on a CRT display.
P CRT displays This setting compensates colors for the characteristics of color CRT displays. CI Impact dot-matrix printers 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.
Glossary addtive primary colors Primary colors which produce white when mixed in a certain proportion. These are red, green and blue--the colors of the scanner lamps and color monitor displays. bi-level data Image data which is composed of 1 bit/pixel. A pixel is represented by a single bit of digital data that can express only 1 (light) or 0 (dark). 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.
color correction A method of adjusting the color image data for a particular type of device so that the reproduction results become close to the original colors. color separation A process to convert full-color images into a limited number of primary colors. The additive primary colors (red, green, and blue) are used by the scanner and the subtractive primary 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.
ESC/I Abbreviation for EPSON Standard Code for Image scanners. A system of commands to control image scanners with software. ESC/P Abbreviation for EPSON Standard Code for Printers. A system of commands to control printers with software. gamma correction A method of adjusting the gamma curve so that the reproduction results on different types of output devices have gradations similar to the original image.
A printer that transfers ink onto the paper by striking the inked ribbon with a number of small pins. A printer that transfers ink onto the paper by spraying it through a number of small nozzles. A piece of hardware, a method, or a standard used for connection between or among computer 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.
An interface channel through which data is transmitted between devices. primary colors Basic colors. See additive primaries and subtractive primaries. resolution Indication of how finely an image is resolved into pixels. Measured in dots per inch (dpi), or pixels per inch (ppi), or samples per inch (spi). 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.
lndex A Accelerator board, 2-16 Art, line, 2-9, 2-13 Automatic document feeder, 1 B Bi-directional interface, 2, 1-5-7 Bits/pixel/color, 3-9, A-5-6 Black and white images, 2-9-11 printer, 2-10-11 Board accelerator, 2-16 expansion, 3-4 interface, 1-5-7 video, 2-17 Brightness, 2-15, 3-7, A-6-7 Button OPERATE, 1-4, 2-2, 3-4 BESET, 2-2, 3-3 C Cable interface, 1-7, 1-8, 1-11 power, 4, 1-4 Card, video, 2-17 Carriage, 1-5 Chain, daisy, 1-8, 1-10, 1-12 Choosing a place, 1-2 Cleaning document table, 2-18 scanner, 2
E Electrical, 4-4 Electronic color printers, 2-12, 2-13 Environmental conditions, 4-4 Equipment, 2-16-17 ERROR light, 2-2, 2-19, 3-2 Expansion board, 3-4 F File compression, 2-17 File size, 2-12-13, 2-16 Fluorescent lamps, 1-5, 2-19, 4-3 Focus, 2-5, 3-7 Format, data, 3-8, A-5-7 G Gamma correction, 2-15, 3-7, A-13-14 Gray scale, 2-10, 2-13, A-5-7 Guidelines, resolution, 2-13-14 H Halftoning, 2-15, 3-8, A-9-12 Hard disk, 1-12, 2-13, 2-16 Help, 2 Home position, 1-5, 2-19-20 Humidity, 1-2,4-4 I IBM PS/2, 1-6
Method, printing, 2-1--12 Mode, image type, 2-9-10 Monitor, 2-14, 2-16, 2-17 Monochrome, 2-10, A-2, A-8 N Newsletters, 2-10 0 OPERATE button, 1-4, 1-5, 2-2 Optical Character Recognition (ORC), 1 Options, 1 Output resolution, 4-2 P Page sequence, 4-2, A-8 Parallel interface, 2, 1-5-7, 4-5 4-8 Photographs, 2-5, 2-9--11, A-9 Phototypesetter, 2-12 Pin connections, 4-5, 4-10 Pixels, 4-3, A-2, A-4 Placement document, 2-4-5 scanner, 1-2 Plugging in, 1-4 Position, home, 1-5, 2-19--20 Power cord, 4, 1-4 Power on
Screw, transportation, 1-3,2-19 SCSI interface, 1-8, 4-9 ID number, 1-9 power on sequence, 1-12 terminator, 1-10 Sequence line, A-8, A-10, A-14 page, A-8, A-14 power on, 1-12 Service bureau, 2-12 Settings, 2-9-15 Setup, 1-1--5 Size file, 2-12-13, 2-16 image, 2-14, A-4 printed, 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 T Table, document, 2-5, 2-18 Technical specifications, 4-2--11 Temperature, 1-2, 4-4 Terminator, 1-10 Tim
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