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A method to detect the thickness of a document

IP.com Disclosure Number: IPCOM000011856D
Original Publication Date: 2003-Mar-20
Included in the Prior Art Database: 2003-Mar-20

Publishing Venue

IBM

Abstract

Disclosed is a method to detect the thickness of a sheet of paper or that of a passbook, by using a sensor on the shutter of a printer. The printer detects the thickness of the sheet of paper by measuring the displacement of the feed roller while the printer is moving the shutter up to open.