System and method for determining quality of printed matter

Details System and method for determining quality of printed matter System and method for determining quality of printed matter

G - Physics

01

N

G01N 21/89 (2006.01) B41J 29/393 (2006.01) G01N 21/86 (2006.01) G06K 9/00 (2006.01) G06T 7/00 (2006.01)

Patent

CA 2189706

An apparatus and method for determining print quality of a printer wherein printed matter is controllably presented to an optical transducer unit which scans user or machine selected areas of said printed matter to generate a signal that is processed by a processing unit to determine print quality. The processing unit processes the signal in an efficient and rapid three step method in which the signal produced by the transducer unit is modified and segmented to determine general characteristics, recognized by a recognition engine and finally checked for voids, spots, blobs or the like. The invention provides an operator with the ability to set quality thresholds such as an acceptable number of quality defects in a single scan. If the number of quality defects exceeds the user input quality limit, the processor unit determines that the printed matter is poor quality and may cause the printer to cease printing.

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