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DOCUMENT/PAPER SENSOR

IP.com Disclosure Number: IPCOM000025681D
Original Publication Date: 1987-Apr-30
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

Documents or paper must be sensed as they are transported from one location to another within, for example, xerographic copying machines. It is important that the size of the documentlpaper andlor its position be identified, including whether or not it is skewed. Generally, this has been accomplished by the use of conductive fiber brushes in linear arrays which generate signals to adjust various machine parameters that are dependent on the document/paper size and location. In the case of a skew signal, the documentlpaper path may be corrected or alternatively the documentlpaper may be rejected as unsuitable for further transportation or processing. While these brushes have been shown to be functional, they have not attained a practical lifetime under copying machine conditions.