Image Scanner User's Manual
¡ Multi-value scanning
Function: Multi-value scanning can record 4, 6, or 8 bits of information for each dot on the image.
The 4-bit multi-value data represents 16 different shades of gray, the 6-bit data rep- resents 64 shades of gray, 8-bit data represents 256 different shades of gray.
Note that the multi-value scanning uses more memory and disk space. For example, 8-bit scanning needs 8 times space more than binary (1-bit) scanning of the same scan area.
Usage: Uses multi-value scanning to scan an image with gray shading, such as a photo- graph, to be printed or displayed on a gray scale device.
Select 4-bit, 6-bit, or 8-bit according to the gray level of your output device.
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