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A-61510 January 2005 2-29
Zone processing
Zone processing is only available on the i820 and i840 Series
Scanners.
Some applications have a requirement to store part of an image
in color or grayscale and the rest of the image in bi-tonal format
(this saves storage space by not storing the entire image in color
or grayscale). Zone processing is a fixed crop window (the zone)
located relative to the upper left corner of a document. It allows
the operator to select via the host application an area on the
document to be delivered in color, grayscale or bi-tonal format (a
separate window for both bi-tonal and color/grayscale may be
defined). Different zones may be selected for both the front and
rear of the image.
This feature may be used in conjunction with auto cropping.
Following is an example of producing a color zone.
Original
Bi-tonal image
Relative
Cropping
1. Prepare documents.
2. Start the scanner to do dual stream simplex scanning (front
bi-tonal and front color).