User manual EPSON PERFECTION 636U

[. . . ] Scanner Basics CPD-8119 Copyright Notice 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. The information contained herein is designed only for use with this EPSON scanner. EPSON is not responsible for any use of this information as applied to other scanners. [. . . ] When you select EPSON TWAIN 3 as your scanner source, you see the EPSON TWAIN window. The following window is the Advanced window in Windows 98 (the iMac steps are the same); there is also an Easy window with just the basic settings. Detailed steps are given in "Step-by-Step Scanning Instructions" on page 28. 1 Select the basic settings: Document Source Image Type Destination Resolution 3 Automatically set the scan area for your image using Auto Locate 4 Size or scale the image (be sure to increase the Resolution if you increase the size or scale) 5 Customize your Settings, select your preview Configuration, and use color management 2 Preview your image 6 Scan the image into your application 7 Close the driver Special scanning features: s s Batch scanning: select Settings, save several setting groups, and click Batch Scan Color management: select Configuration and click ICM/sRGB (Windows 98) or ColorSync (iMac) Image corrections: use the Image Controls, Color Adjustment, Tone Correction, and Auto Exposure tools. Availability of these tools depends on the Image Type selected. If ICM/sRGB is selected on the Configuration screen, these tools are not available. s For more information, see your electronic EPSON TWAIN User's Guide. 24 Here are some recommended settings for different types of scans. Recommended application Recommended Image Type PhotoDeluxe Color Photo Color Photo Color Photo Scanning resolution for printing 1, 2 300 dpi 300 dpi to 2400 dpi 3 300 dpi Image type Photograph Small photograph PhotoDeluxe to be enlarged Magazine Newspaper (text only) Text for OCR PhotoDeluxe PageManager OCR 400 dpi (automatically selects Text Enhancement Technology [TET]) OCR 400 dpi (automatically selects Text Enhancement Technology [TET]) Copy & Fax 400 dpi (automatically selects Auto Area Segmentation [AAS]) Line Art TPU for neg. Film TPU for neg. Film TPU for pos. Film 300 to 2400 dpi 3 300 to 2400 dpi 3 300 to 2400 dpi 3 300 to 2400 dpi 3 PageManager Text with images PageManager Line art 35 mm film (negative) 4 x 5 or Brownie film (negative) PhotoDeluxe PhotoDeluxe PhotoDeluxe 35 mm slide or PhotoDeluxe 4 x 5 transparency 1 2 3 If your final output is for on-screen viewing (for example, on a web page), select 72 dpi for your resolution. If you are enlarging your image, you must manually increase the resolution (dpi) proportionally to maintain the resolution of your original. If you are scanning between 1201 and 2400 dpi, EPSON recommends you keep your scan area to 4 × 11. 7 inches to maintain true hardware resolution. Above 2400 dpi, you will be using software interpolation to increase the resolution. PressWriter for iMac does not have a TWAIN scan function, but you can import a scanned image from another application using the Object, Import Image function. 25 Tips for Getting the Best Scan Getting the best scan possible depends on several factors, including the quality of your original and the resolution you select. The better your original is, the better your scan will be. While you can make some corrections in your scanning software, you'll need to do major photo retouching in a program such as Adobe PhotoDeluxe to correct or mask problems such as a coffee stain on the original image. Selecting Resolution Resolution refers to how many dots per inch (dpi) or dots per centimeter (dpcm) your image contains. The best resolution for a scanned image depends on the type of image you're scanning and your final output device. As a rule of thumb for most images except line art, use a scanning resolution that is approximately one third of your output resolution. For example, use a scanning resolution up to 100 dpi with a 300 dpi laser printer, and up to 200 dpi with a 600 dpi laser printer. For 1440 dpi ink jet printers, such as the EPSON Stylus® COLOR or Photo series, use a scanning resolution of approximately 300 dpi. Try a scanning resolution of 240 dpi for 720 dpi printing. Keep the following in mind when you choose a resolution: s The higher a resolution you select, the larger the resulting image file will be. For example, an 8. 5 × 11-inch original scanned at 300 dpi can produce a 24MB file. The same original scanned at 72 dpi creates only a 1. 3MB file. Large files take longer to process and print, so consider the practical limitations of your computer system and hard disk drive when selecting a resolution. To keep your file size manageable, select the lowest possible resolution that gives acceptable quality. If your final output is for on-screen viewing, you can scan at 72 dpi and reduce your file size. If you need to scan at a higher resolution, you can reduce the size of the resulting image file by scanning only part of the image. [. . . ] Then your iMac automatically restarts. Scanning Problems If the file size is too big . Try selecting a lower resolution (dpi), or scan only part of the image. 40 If your scanned image is faint or has gaps . . s If your scanned image is blurred or distorted . Decrease the software or driver's brightness setting. [. . . ]