Visioneer 8820 manual About Jpeg Compression

32VISIONEER ONETOUCH 8820 SCANNER INSTALLATION GUIDE

8.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. But compression also reduces image quality. Therefore, compressing an image involves a trade-off between image quality and file size. In many cases, loss of quality due to compression is not readily apparent, but the amount of compression you select—if any—depends on the quality you want.

The JPEG compression options only apply to:

■Destination applications used for graphics, photos, and artwork images. Word processing applications, fax applications, and other text-based destination applications do not use JPEG compression.

■Scan modes for color or grayscale scanning. JPEG compression does not apply to the Black/White scan mode.

Note: You can add JPEG compression to the existing preset configurations if the destination application is for graphics, photos, or other artwork images.