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BOOK MODE COPYING DEVICE TO PREVENT RDH DAMAGE

IP.com Disclosure Number: IPCOM000025249D
Original Publication Date: 1984-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 62K

Publishing Venue

Xerox Disclosure Journal

Abstract

Copier machines having recirculating document handlers (RDH) may be damaged when a book or other thick document is manually copied on the copier platen with the copier placed in the book-copying mode. Generally, the book-copying mode enables the operator to pivot the RDH away from the platen. However, functional pieces of the RDH may be damaged if it is closed on the book.

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XEROX DISCLOSURE JOURNAL

BOOK MODE COPYING DEVICE TO PREVENT RDH DAMAGE
Edward W. C. Hanzlik

Proposed Classification
U.S. Cl. 27 1 /245 Int. Cl. R65h 9/04

Copier machines having recirculating document handlers (RDH) may be damaged when a book or other thick document is manually copied on the copier platen with the copier placed in the book-copying mode. Generally, the book-copying mode enables the operator to pivot the RDH away from the platen. However, functional pieces of the RDH may be damaged if it is closed on the book.

A full closure preventing interlock which is actuated by an oversized document sensor would eliminate this problem.

An example of one such device 10 is shown in the accompanying figure. A book or magazine 12 when placed partly on the platen glass 14 of copier 20 (shown in dashed lines) and partly on guide 24 would lie over the inlet 18 of the guide. The inlet is connected via conduit 19 to a pressure sensor 16. The sensor is sensitive to small amounts of change in air flow and/or pressure. If the sensor were connected to a vacuum source 22 within the copier, the sensor could easily detect a change in pressure if part of the book covered the sensor inlet. A low pressure change would indicated a "no book mode" and a high pressure change would indicated the presence of book (book mode). When a book is detected, the sensor would provide a signal to the copier controller which, in turn, would energize a solenoid- actuated stop pin to limit or to p...