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US 7,404,551 B2Granted
Stack quality monitoring algorithm
AssigneeXerox Corporation
InventorsRobert H. Brown, Raymond M. Ruthenberg, Wayne R. Jordan, Richard Biasutto, Michel Loiselle, Perry C. Dong, Mathieu King
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Abstract
An improved method for monitoring stack quality in a finisher of a printer includes examining the net displacement of a compiling tray after each set has been ejected. A deviation from the normal increments of displacement for each set triggers a “tray full” condition which alerts a user to empty the tray.
Claims7
A stack quality monitoring method for use in a printing apparatus, comprising:
- providing a scanning member positioned to read images on documents positioned thereover and forward image data for further processing;
- providing an image processor that receives the image data from said scanning member and processing it;
- providing at least one copy sheet feed tray adapted to feed copy sheets to receive images thereon from said image processor;
- providing a finisher for producing sets from said copy sheets, said finisher including an output tray;
- counting the number of pulses required to raise said output tray from an eject position to a compile position;
- determining if the number of pulses counted is above a threshold number;
- adding a predetermined number of pulse counts to the pulse count based on the number of sheets in the set if the determined number of pulse counts is above said threshold number;
- determining if a predetermined maximum count number has been exceeded;
- and
- halting output to said output tray if the predetermined maximum count number has been exceeded.
7 more elements
Dependencies are inferred from the claim text.