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Document Feeding Mechanism for Printer

IP.com Disclosure Number: IPCOM000062138D
Original Publication Date: 1986-Oct-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Sedgwick, DM Thorne, WD [+details]

Abstract

A mechanism for feeding a continuous web of paper through a printer includes means to ensure that the paper is fed evenly in the forward and reverse directions, that paper feed jams are detected, and that paper can be inserted into the feed mechanism easily. As illustrated in the figure, a paper feed mechanism for feeding a continuous web of paper 1 through a printer includes a pair of tractors 2 formed with pins 3 adapted to engage in holes 4 in the edges of the paper web 1, a first set of rollers 5 mounted on a shaft 6 and a second set of rollers 7 mounted on a shaft 8. A motor 11 is coupled by a belt 12 to a first pulley 13 on a shaft 14 to which are attached the tractors 2, and to a second pulley 15 coupled to the shaft 6 through a one-way clutch 16.