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INFRARED PAPER THICKNESS SENSOR

IP.com Disclosure Number: IPCOM000027816D
Original Publication Date: 1999-Dec-31
Included in the Prior Art Database: 2004-Apr-09

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a paper thickness sensor for electrophotographic printers and copiers. Sensing is based on the optical transmission characteristic of a copy sheet to infrared light. Problems like misfeeds, multiple feeds, jams, and shutdowns encountered in printing machines are due to the various paper bias weight (thickness) used by customers wherein, the machines are not capable of knowing the paper thickness types.