Browse Prior Art Database

DETECTION OF SET SEPARATOR FAILURES

IP.com Disclosure Number: IPCOM000025714D
Original Publication Date: 1987-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 54K

Publishing Venue

Xerox Disclosure Journal

Abstract

There are occasional problems with the set separator in an automatic document handler or recirculating document handler failing to drop or otherwise operate, and thereby failing to indicate the completion of one feeding of the document set. [Document set separators of various types are cited in the introduction of U. S. Patent 4,589,645 issued May 20, 1986 to Michael J. Tracy.] If this failure occurs, the document handler can continue to recirculate continuously and/or jam on the stuck finger of the set separator.

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XEROX DISCLOSURE JOURNAL

DETECTION OF SET SEPARATOR FAILURES U.S. C1.355/14SH Thomas Acquaviva

Proposed Classification

Int. C1. G03g 15/00

There are occasional problems with the set separator in an automatic document handler or recirculating document handler failing to drop or otherwise operate, and thereby failing to indicate the completion of one feeding of the document set. [Document set separators of various types are cited in the introduction of U. S. Patent 4,589,645 issued May 20, 1986 to Michael J. Tracy.] If this failure occurs, the document handler can continue to recirculate continuously and/or jam on the stuck finger of the set separator.

To preclude this, the normal count of the number of document sheets fed from the beginning of feeding, i. e. from "START PRINT", is accumulated. If that accumulated count exceeds a preset maximum number of originals the document handler tray is adapted to hold, the copier controller logic will declare a set separator fault and shut down the system, even though the set separator finger has never dropped to provide an end of set signal, i. e., an "overcount" error signal is provided.

Note that this will also prevent the operator from overloading the document handler with more documents than it is capable of properly handling even if the set separator is working properly.

Volume 12 Number 2 March/April 1987 155

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