User manual VISIONEER ONETOUCH 8800 INSTALLATION GUIDE

[. . . ] Visioneer® OneTouch® 8800 Scanner FOR USB CONNECTION Installation Guide COPYRIGHT INFORMATION Copyright © 2000 Visioneer, Inc. , a wholly owned subsidiary of Primax Electronics LTD. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. The Visioneer brand name and logo are registered trademarks of Primax Electronics LTD. OneTouch is a trademark of Primax Electronics LTD. [. . . ] Scans of patterns or dots sometimes have a distorted or wavy appearance. The scanner scans the item to compensate for the patterns and dots, and produces a clearer image. The scanning may slow down a bit when this option is selected. You don't need to select this option when scanning photographs. The DeScreen setting does not apply to the Black/White mode. 25 VISIONEER ONETOUCH 8800 SCANNER INSTALLATION GUIDE Gamma--Drag the slider to improve how the colors in a scanned image look on your monitor. Gamma correction allows you to achieve precise color matching. Because the computer cannot always transmit the exact color information to the hardware, you may have to make some color adjustments using the Gamma feature. The default Gamma setting works fine in most cases and normally does not need to be adjusted. If a JPEG tab is available, click it to select image compression settings. Please see "About JPEG Compression" on page 26 for information about the JPEG settings. Enable hardware compression (JPEG) --Click to make the JPEG compression options active. Minimize Image Size (Maximum compression)--Select this option to produce the smallest file size for the image; image quality is lowest. Best Image Quality--Select this option to produce the best quality image; file size is larger. Custom Quality Factor--Set your own choice for file size and image quality. Enter a number in the Quality Factor box or drag the slider to set the Quality Factor. High means higher image quality and larger file size. Low means lower image quality but smaller file size. CONFIGURING THE SCANNER 26 Restore Defaults--Click to return the slider and Custom Quality Factor to their original settings 7. Make sure the configuration you just defined is selected. Click OK on the Configuration dialog box. The new configuration and its adjusted settings now apply to the button whose tab is selected at the top of the Configuration dialog box. Note: If you select the Copy/Print or Fax button, the dialog box for editing and adjusting the settings will have a Device tab for selecting options for a printer or copier. See the Help for more information. ABOUT JPEG COMPRESSION Scanned graphics, photos, and other images can sometimes produce large files. The JPEG options for scanning reduce the file size by compressing the image electronically. [. . . ] Click the left mouse button to zoom in (enlarge). Click the right mouse button to zoom out (reduce). To return the image to its full size, click the Pointer button directly above the Zoom button, put the pointer on the image and click the right mouse button. Select Show Full Image from the pop-up menu that appears. SETTING PREFERENCES You can set preferences for the Scan Manager and scanner that are independent of the preferences for the PaperPort software. ADJUSTING THE SETTINGS ON THE SCAN MANAGER 50 To set the Scan Manager preferences: 1. [. . . ]