Browse Prior Art Database

DYNAMIC SHEET COUNT PREDICTOR

IP.com Disclosure Number: IPCOM000026404D
Original Publication Date: 1991-Oct-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 68K

Publishing Venue

Xerox Disclosure Journal

Abstract

A dynamic sheet count predictor system for detecting and signaling an approximate size of a stack or job of original document sheets to be imaged in a copier or in other document imager having an automatic document feeder is disclosed.

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XEROX DISCLOSURE JOURNAL

DYNAMIC SHEET COUNT PREDICTOR
Abde Kapadia
Daniel Fleysher
Gerald L. Coy
Kurt T. Knodt

Proposed Classification
U.S. C1.355/321 Int. C1. GOg21/00

A dynamic sheet count predictor system for detecting and signaling an approximate size of a stack or job of original document sheets to be imaged in a copier or in other document imager having an automatic document feeder is disclosed.

An electromechanical set separator provides the system with a rough initial stack height corresponding to a stack size or document number estimate. Thereafter, during recirculating document handler operation the system receives estimate signals from a position separator arm on the stack, and also a signal from a counter with a number of document sheets that have been fed off the stack.

The estimation of the number of documents to be fed for imaging is significantly improved by dynamically comparing the signals of the number of document sheets fed off the stack and the change in the set size estimation from the set separator. The predictor system reduces many problems associated with a document handler as disclosed in "DETECTION OF SET SEPARATOR FAILURES," Xerox Disclosure Journal, Vol. 12, No. 3, p. 155, May/June 1987.

Various methods have been used to estimate the number original document sheets as for example in U.S. Patent 4,589,645 issued to M. Tracy and in U.S. Patent 4,469,320 issued to S.J. Wenthe. Both methods incorporate a stack height sensor estimator set...