EPSON ® User’s Guide 4001572 CO1-00
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.
® EPSON ES-600C Scanner User’s Guide
About the Cover The cover of this guide was composed entirely using computer graphics software and an Epson scanner. The photographs were scanned at 300 dpi image resolution. The completed layout was color separated on an imagesetter and output to film at 2540 dpi with a screen resolution of 133 lines per inch. All rights reserved.
Contents Introduction Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How to Use This Manual . . . . . . . . . . . . . . . . . . . . . . Warnings, Cautions, and Notes . . . . . . . . . . . . . . . . . . Where to Get Help . . . . . . . . . . . . . . . . . . . . . . . . . . Important Safety Instructions. . . . . . . . . . . . . . . . . . . . 1 2 2 3 4 Chapter 1 Setup Choosing a place for the scanner . . Removing the transportation screw . Plugging in the scanner . . . . . . . .
Chapter 3 Scanner Basics Placing a Document on the Scanner . . . . . . . . . . . . . . . . Scanner Setting Guidelines . . . . . . . . . . . . . . . . . . . . . d Image type or mode . . . . . . . . . . . . . . . . . . . . . u/ Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . d Size or scale . . . . . . . . . . . . . . . . . . . . . . . . . . (/ Halftoning and dropout . . . . . . . . . . . . . . . . . . . (/ Brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . ti Color correction .
Chapter 5 Technical Specifications Scanner Specifications . . . . . Electrical Specifications . . . . . Environmental Conditions . . . Parallel Interface Specifications Timing charts . . . . . . . . SCSI Specifications . . . . . . . Signal pin assignments . . Initialization . . . . . . . . . . . Default settings. . . . . . . DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction The Epson® ES-600C is a full-color flatbed image scanner with an 8 1/2 x 11 inch (letter) size scanning area. It has the ability to scan in color (24 bit) or gray-scale monochrome (8 bit), making it ideal for virtually all uses, from simple drawings to complex full-color illustrations. The ES-600C comes in two models, one with a bidirectional parallel interface and one with a SCSI (Small Computer System Interface). This manual covers both models.
How to Use This Manual Chapter 1 describes setting up your scanner. Be sure to read this first. Chapter 2 tells how to use the interface kits to connect the scanner to your computer. The basic information in Chapter 3 helps you use your software and scanner, and Chapter 4 contains 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.
Where to Get Help Epson America provides local customer support and service through a nationwide network of authorized Epson dealers and Service Centers.
Important Safety Instructions 1. Read all of these instructions. 2. Follow all warnings and instructions marked on the scanner. 3. Unplug this scanner from the wall outlet before cleaning. Use a damp cloth for cleaning and do not use liquid or aerosol cleaners. 4. Do not use this scanner near water. 5. Do not place the scanner on an unstable cart, stand, or table because it may fall, causing serious damage. 6.
10. If you use an extension cord, make sure that the total of the ampere ratings on the products plugged into the extension cord does not exceed the extension cord ampere rating. Also, make sure that the total of all products plugged into the wall outlet does not exceed 15 amperes. 11. Never push objects of any kind through cabinet slots as they may touch dangerous voltage points or short out parts that could result in a risk of fire or electric shock. Never spill liquid of any kind on the scanner. 12.
Chapter 1 Setup Choosing a place for the scanner . . . . . . . . . . . . . . . 1-2 Removing the transportation screw . . . . . . . . . . . . . 1 -2 Plugging in the scanner . . . . . . . . . . . . . . . . . . . . . 1 Setting the DIP switches . . . . . . . . . . . . . . . . . . . . l-5 Self test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . l-6 Resetting the DIP switches . . . . . . . . . . . . . . . . . . .
1Choosing a place for the scanner You should consider the following when selecting a location for your scanner: P Place the scanner on a flat, horizontal, stable surface. If the scanner is tilted or at an angle, it cannot operate properly. Q Place the scanner close enough to the computer for the cable to reach. cl Allow some space behind the scanner for the cables, and make sure to place the scanner where you can easily unplug the power cord.
3. Remove the screw by turning it counterclockwise. 4. Push the screw into the storage hole on the right under the word STOCK. It does not screw in. Make sure you push it all the way into the hole. Caution: Do not discard the transportation screw. You need it when you 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. 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.
4 Setting the DIP switches There is a bank of DIP switches under the small cover on the top left side of the scanner. Normally you do not need to change the switch settings, but for the self test follow these steps: 1. Make sure that the scanner is turned off and remove the DIP-switch cover by pressing down on the arrow on the cover and sliding it toward you. 2. Turn switches 1 and 2 to ON. All others should be OFF. Use a pen, tweezers, or other pointed object to change the DIP-switch setting. 3.
5 Self test This test doesn’t read an image or send any image data. It simply 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 self test. 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.
After the carriage reaches the front end of the document table, it rapidly returns to the home position with the lamp turned off. The scanner repeats the action two times, once for the red lamp and once for the blue lamp. Then the carriage returns to the home position and the self test is over. The READY light comes on. If the scanner does not work as described, turn it off. Then make sure that you have removed the transportation screw and that the power cord is firmly plugged in and turn it on again.
6 Resetting the DIP switches 1. Make sure that the scanner is turned off and remove the DIP-switch cover by sliding it toward you. 2. Turn switches 1 and 2 to OFF. All others should be OFF. Use a pen, tweezers, or other pointed object to change the DIP-switch setting. 3. Replace the DIP-switch cover by sliding it back to its original position.
Chapter 2 Connecting the Scanner to the Computer Using an Interface Kit . . . . . . . . . . . . . . . . . . . . . . . . Interface types . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2-2 Parallel Interface Model . . . . . . . . . . . . . . . . . . . . . . . 2-3 Connecting the parallel interface . . . . . . . . . . . . . . . 2-3 SCSI Model . . . . . . . . SCSI connections . . Terminator setting . Connecting the SCSI Power-on sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using an lnterface Kit Your scanner is either the bidirectional parallel interface model or the SCSI (Small Computer System Interface) model. You must use an interface kit appropriate to your computer. Interface types D If your scanner is the bidirectional parallel interface model: Use Epson’s Bidirectional Parallel Interface Kit for DOS Computers. There is a bidirectional parallel interface board in the kit. Install it in your computer. Then connect the scanner to the computer.
Parallel interface Model For this model, you use the optional Epson Bidirectional Interface Kit for DOS Computers. It contains a bidirectional interface board, a cable, and software. You first install the board in your computer, using the 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.
3. Connect the 36pin end of the cable to the scanner; then fasten the connector with the clamps on the sides of the connector. Warning: Do not conned more than one interface cable to the scanner at a time. Always use a shielded cable. SCSI Model For this model, you use either the Epson SCSI Kit 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.
SCSI connections The SCSI interface allows you to connect up to eight devices, including the computer, in what is called a daisy-chain arrangement. A daisy chain is made up of a computer and one or more SCSI devices. Only the first SCSI device 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 number 7, and each of the other devices must have a different number between 0 and 6.
1. Locate the SCSI ID rotary switch next to the SCSI connectors on the rear panel of the scanner. 2. To change the SCSI ID, turn the small dial to the desired number. 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 not function properly.
Terminator setting If the scanner is the only SCSI device you are going to connect to your computer or if it is the last device in the daisy chain, leave the terminator on. The terminator is on when Switch 1 of the terminator switches, located between the SCSI connector on the rear panel, is on. See below for the location of the switches. The scanner should always be the last device on the daisy chain.
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. If you are connecting the scanner to a SCSI device other than the computer, use a cable with 50-pin connectors on both ends. Then fasten the connector with the clamps on the sides of the connector.
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 daisy chain may be left off if you don’t plan to use them.
Chapter 3 Scanner Basics Placing a Document on the Scanner . . . . . . . . . . . . . . . . 3-2 Scanner Setting Guidelines . . . (/ Image type or mode . . ti Resolution . . . . . . . . d Size or scale . . . . . . . d Halftoning and dropout I/ Brightness . . . . . . . . (/ Color correction . . . . . d Gamma correction . . . (/ Cropping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. 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 properlyfocused. Also make sure to close the document cover. This prevents interference from external light. Always keep the document table clean. See Chapter 4 for information on cleaning the scanner. Avoid twisting the document cover when you open or close it.
Note: If you are scanning a large object that will nut fit 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 m-attach the document cover, insert the metal tongues in the slot on top of the scanner. Make sure to hold the base of the document cover when you remove or attach it.
The messages on the screen and your software manual should be your main guide to scanning, but these basics can supplement your understanding of your software’s on-screen menus. This section refers to some examples found in the Color Image Sumner booklet included with your scanner. Each (/ icon indicates a setting that you make or check. The first two are the most important. Note: Your software may use a somewhat different 0rder or slightly different terminology.
Gray 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. Color This is the setting for color photographs or other originals in color. (Your software may have several color settings. Use 24-bit RGB, three-pass, and/or page-sequence mode or equivalent settings.
P 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 example below shows the typical quality of a photograph printed on a laser printer.
0 Printing presses are for high quality and high volume work. You scan and edit your images and then send the files to a service bureau or printing company, which 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.
Resolution guidelines This table shows the recommended resolutions in dots per inch or pixels per inch for the image types and printing 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 Tip: 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.
Note: For color or gray scale images, ignore the dpi (dots per inch) resolution 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 250 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, it requires a scan resolution of only 75 to 100 dpi to obtain the best quality gray scale images it can print.
d Color correction Use the default or CRT display. d Gamma correction Use the default or CRT Display B. tl 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 select only the part of the image that you will use. This will make your image file smaller. Judging Image Quality When you look at your monitor to evaluate a scanned image, remember that the image will look different when it is printed.
Equipment Your present equipment 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.
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.
Chapter 4 Troubleshooting and Maintenance Problems and Solutions . . . . . . . . . . . . . . . . . . . . . . . 4-2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the fluorescent lamps . . . . . . . . . . . . . . . 4-8 4-9 Transporting the Scanner . . . . . . . . . . . . . . . . . . . . . .
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: 0 Incorrect setup of the interface D Inappropriate selection of the scanner functions 0 Incorrect setup of your computer or software 0 Incorrect operation of your software. Also see the documentation that came with your software, computer, and printer for possible solutions.
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. If you are connecting the scanner with the SCSI interface, see that the terminator and SCSI ID are correctly set up.
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 the position of the document and do not move it while the scanner is operating. See that the scanner is not tilted or placed on an unstable surface. 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).
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 not be in contact with the document table and may be discolored. Change the position of the document. The image is faint or out of focus.
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. (See 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. (See your computer manual.) The printed color seems different from that of the originals.
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.) Maintenance To keep your scanner operating at its best, you should clean it periodically. Before cleaning, unplug the power cable.
e 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 reading quality. Never use alcohol, thinner or corrosive solvent to clean the scanner. These chemicals can damage the scanner components as well as the case. Be careful not to spill liquid into the scanner mechanism or electronic components. This could permanently damage the mechanism and circuit y. Do not spray lubricants inside the scanner.
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 scanner. 2. Remove the transportation screw from the storage hole and screw it into the center hole to secure the carriage. Note: If the scanner is broken, the carriage may not automatically return to the home position.
Chapter 5 Technical Specifications Scanner Specifications . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . 5-4 Environmental Conditions . . . . . . . . . . . . . . . . . . . . 5-4 Parallel Interface Specifications . . . . . . . . . . . . . . . . . . Timing charts . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 5-8 SCSI Specifications . . . . . . . . . . . . . . . . . . . . . . . . . Signal pin assignments . . . . . . . .
Scanner Specifications Scanner type: Flatbed, color/monochrome Photoelectric device: CCD line sensor Effective pixels: 2550 dots by 3510 dots at 300 dpi, 100% Maximum document size: 216 mm by 297 mm (8.5 inches by 11.7 inches) US letter size or A4 Scanning resolution: 300 dpi Output resolution: 50, 60, 72, 75, 80, 90, 100, 120, 133, 144, 150, 160, 175, 180, 200, 216, 240, 300, 320, 360, 400, 401 and 600 dpi. Values above 300 through software interpolation.
Size: 50% to 200% in 1% steps. Image data: 8 bits per pixel per color maximum Gradation: 8 bits per pixel per color maximum Brightness: 7 levels Halftoning process: Enable/disable selectable.
Electrical Specifications Voltage: 120 VAC, + lO% Frequency: 49.5 to 60.5 Hz Power consumption: Approx. 20 W (self test in monochrome mode) Insulation resistance: 10 MQ between AC power line and chassis at 500 VDC Environmental Conditions Temperature: Operation: 40 o F to 95o F (5o C to 35o C) Storage: 10o F to 150o F (-20” C to 60o C) Humidity: Operation: 10% to 80%, without condensation Storage: 10% to 85%, without condensation Operating conditions: Ordinary office or home conditions.
Parallel Interface Specifications Interface type: Bidirectional 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: Technical Specifications 5-5
Signal pin assignments 5-6 TechnicaI Specifications
When this signal level becomes low, the scanner is reset to the 0 “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 computer and the scanner. CI All interface conditions are based on TTL level.
The figures below show the timing for the bidirectional parallel interface as viewed from the scanner. OUT (from scanner to computer) IN (from computer to scanner) min 0.
SCSI Specifications Interface type: ANSI X3.131-1986 standard Function: The following functions are included. BUS FREE phase ARBITRATION phase SELECTION/RESELECTION phase COMMANDphase (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 logic level: TTL level compatible Electrical standard: As per ANSI X3.
Connector pin arrangement: Signal pin assignments In this table, the direction of the signals is given relative to the scanner.
Initialization The scanner can be initialized (returned to a fixed set of conditions) 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: P When the software command ESC @ (initialize the scanner) is received.
Default settings The table below shows the default conditions when the scanner is initialized. When the scanner is initialized, the scanner terminates the scanning operation, and the carriage returns to the home position (rear of the scanner).
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 3. This Appendix contains fuller, 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 controlled from scanner software, 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.
Resolution The output resolution determines how many pixels, or dots, are used for scanning and reproducing an image. Resolution is measured in units of dpi (dots per inch). Some software uses the term pixels per inch (ppi). As the resolution value increases, the image is read and reproduced in finer detail. At 300 dpi, for example, an image of one square inch is represented by up to 90,000 dots. The 23 resolution settings allow you to choose the best resolution for most types of printers.
To enlarge or reduce the image size, use the scanner’s size function through your software. In your application software, perform only fine adjustments. Avoid changing the image size in your application especially if the image is scanned using halftoning, because the image quality deteriorates. The default size value is 100%. Data format 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.
8 bits/pixel 3 bits/pixel 2 bits/pixel 1 bit/pixel A-6 Appendix
To reproduce an image of more than 2 bits/pixel/color, however, the output device should also be capable of producing the same tones. Many displays and printers cannot deal with this and are limited to monochrome without gradations, or to 8 or 16 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.
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 for green, red, and blue, and produces three pages of image data that combine to give full color image data.
Halftoning mode 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), magenta (red), 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 Halftoning mode B Halftoning mode C None 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 degrade the image. Instead use the scanner’s size or scale function at the time of scanning to select your desired image size.
Gamma correction This function adjusts the light intensity ratio between the original image and the output data. When the image is reproduced on certain types of output devices, the tones of the image will be closer to those of the original. The term “gamma” (r) means the shape and slant of the line on the graph that shows the ratio, as shown below. Gamma correction provides five settings, and can be combined with all other scanner functions. Choose an appropriate setting from the five modes below.
Ll 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 = 2.2). This is usually the best setting. D Printer Output A This setting is suitable for high-density 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.
This function processes the image data so that the data will be most suited for the characteristics of the color output device used. For example, CRT displays use the additive primary colors-green, red and blue-to produce other colors. On the other hand, printers use subtractive primary colors-magenta, cyan and yellow (and often additional black to give more definition), and colors can differ slightly depending on the printing methods or the types of ink used.
Glossary additive 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. 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.
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.
impact printer A printer that transfers ink onto the paper by striking the inked ribbon with a number of small pins. ink jet printer A printer that transfers ink onto the paper by spraying it through a number of small nozzles. interface A piece of hardware, a method, or a standard used for connection between or among computer devices. line sequence A type of color scanning that separates primary colors line by line. The carriage makes only one pass.
pixel Short for picture element. Each image is composed of a number of pixels. Pixels are also counted in units of dots. 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). scan An operation performed by the sensor and the carriage. The image is divided into pixels by scanning.
thermal transfer printer A printer that transfers ink onto 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.
Index A Accelerator board, 3-12 Art, line, 3-5, 3-9 Automatic document feeder, 1 B Bidirectional interface kit, 1 Bidirectional model scanner, 1, 2-24 Bits/pixel/color, 4-7, A-5-7, GL-1 Black and white images, 3-5-7 printer, 3-7 Board accelerator, 3-12 expansion, 4-3 interface, 2-3, 24 video, 3-12 Brightness, 3-10, 4-5, A-7 Button OPERATE, l-4 RESET, 4-2 C Cable interface, 2-3--4, 2-5, 2-8 power, 5, 1-4 Card, video, 3-12 Carriage, l-6-7, GL-1 Chain, daisy, 2-5, 2-9 Choosing a place, l-2 Cleaning document
Document, GL-2 cover, l-6, 3-24 placement, 3-3-4 table, 3-4, 4-8 DOS interface kit, 1, 2-2 Dot matrix, 3-7 Dots per inch, 3-9, 3-10, GL-2 Dpi, 3-10, GL-2 Drawings, 3-6-7 Dropout color, 3-10, A-8, GL-2 E Electrical, 5-4 Electronic color printers, 3-7, 3-9, 3-l1 Emulation, ES300C, 4-3, 5-12 Environmental conditions, 5-4 Equipment, 3-12-13 ERROR light, 4-9 ES300C emulation, 43, 5-12 Expansion board, 4-3 F Factory settings, 5-12 File compression, 3-13 File size, 3-8, 3-11 Fluorescent lamps, l-6-7, 49, 5-3 Focus
Light ERROR, 4-9 READY, l-7, 3-2, 4-2, 4-9 Lightness, 3-10, 4-5, A-7 Line art, 3-5, 3-7, 3-9 screen, 3-9 sequence mode, A-8, A-10, A-13, GL-4 sequence self test, 5-12 Lines, jagged, 4-5 Lines per inch, 3-9 Linotronic, 3-8 Location, scanner, l-2 Lpi, 3-9 M Macintosh interface kit, 1, 2-4 SCSI port, 2-8 Maintenance, 4-8-10 Memory, 3-8, 4-3 Method, printing, 3-6-8 Mode, image type, 3-5-6 Model parallel, 2-24 SCSI, 2-2, 2-4-9 Monitor, 3-10, 3-11, 3-12-13 Monochrome, 3-6, A-2, A-8, GL4 N Newsletters, 3-7 O OPER
R RAM, 3-12 READY light, l-7, 42, 43, 4-9 Removing document cover, 3-4 transportation screw, l-2-3 Replacing lamps, 4-9 RESET button, 4-2 Resolution, 36-10, A-4 guidelines, 3-9 output, 5-2, A-4 RGB, 3-6 Size file, 3-8, 3-11 image, 3-10, A-4-5 printed, 3-10 Slides, 1 Solutions, 42-8 Space, l-2 Specifications, 5-2-12 Switch DIP, l-5, 1-8, 5-12 SCSI ID number, 2-6, 5-9 terminator, 2-7, 5-9 T S Safety instructions, 4 Scale, 3-10, A4 Scale, gray, 3-6, 3-10, A-5-7 Scales, document table, 4-5 Screen, line, 3-9
Epson America, Inc. 20770 Madrona Avenue Torrance, California 90503 Printed in Japan 92.
