Multiple function calibration for document scanner

Details Multiple function calibration for document scanner Multiple function calibration for document scanner

H - Electricity

04

N

H04N 1/04 (2006.01) H04N 1/00 (2006.01) H04N 1/12 (2006.01) H04N 1/193 (2006.01)

Patent

CA 2364859

A compact structure and rapid method for calibrating a document scanner provides for a substantially cylindrical calibration casing having a central axis and an outer surface, with a brightness calibration section of the outer surface encompassing a portion of the circumference of the outer surface, a document width detection segment encompassing a second portion of the circumference of the outer surface, and a document backer element encompassing a third segment of the circumference of the outer surface of the casing. A driver selectively positions the casing in different rotational positions in which the different segments of the outer surface of the cylinder face the optical element of the scanner.

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