User manual EPSON EXPRESSION 636

[. . . ] EPSON Expression COLOR IMAGE SCANNER ® TM 636 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Seiko Epson Corporation. No patent liability is assumed with respect to the use of the information contained herein. Neither is any liability assumed for damages resulting from the use of the information contained herein. [. . . ] 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. 0 0 0 0 5. Use your scanner software to scan the image. Scanner Basics 2-5 Removing the Document Cover For thick documents or other materials that are hard to scan, you can remove the document cover. To do this, hold the back of the document cover behind the hinge and lift straight up. Do not force the cover off the scanner or lift from in front of the hinge. This may damage the cover. Note: When scanning with the cover removed, make sure you cover any exposed areas of the document table to prevent interference from external light. Reattach the document cover by pushing straight down on the back of it until it clicks into place. 2-6 Scanner Basics Recommended Equipment Your scanner is sufficient for most 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 images can use much more memory than text files, so you may need more RAM (Random Access Memory) in your computer and a larger hard disk than you have used previously. Accelerator boards In addition to memory, processing speed is important because large files take longer to process than small ones. Therefore, you may want to add an accelerator board to your computer. 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 need 24-bit color, also called true color or millions of colors, to produce the highest quality image reproductions. Scanner Basics 2-7 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 1. 44MB 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, almost unnoticeable. Maintenance To keep your scanner operating at its best, you should clean it periodically. Before cleaning, unplug the power cable and all the interface cables connected to the scanner. Clean the outer case with mild detergent diluted 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 soft dry cloth. Be sure that there is no dust on the glass of the document table. [. . . ] See your application software manuals for more information on halftoning and moire (interference) patterns. Colors on your monitor differ from those in the original document. Check the image settings in your scanner software, especially data format (bits/pixel/color), gamma correction, and color correction. Try a different combination of these settings. Check the color matching and color management capabilities of your computer, display adapter, and software. Some computers can change the color palette to adjust colors on your screen. [. . . ]