14.2.13 JPEG compression (factor)
Between scanner and computer (ArchivistaBox) image data are normally transmitted without having been compressed. At 300dpi and colour there are ca. 25 MBytes of data per page that must be conveyed. With double sided scanning there are about 50 MBytes per sheet. The USB interfaces used today can in theory handle 60 MBytes (or 480 MBits) per second. In practice the throughput is only about half of that, though, and data transmission may easily take a couple of seconds. There exist a few scanners today which compress the image data while they are still in the scanner and which send out an already compressed data stream. The transferral of data between scanner and computer is much more efficient this way. If the device you use supports such compression, you can enter the compression factor here.
Please note that currently only a few
Fujitsu scanners offer this option. Use 0 (no compression) or choose a value between 1 (fast transferral with less quality) and
7 (slow transferral, optimum image quality).