Forms feed tractor having modified pin spacing

Details Forms feed tractor having modified pin spacing Forms feed tractor having modified pin spacing

1982-08-31

1991-05-28

Burr, Edgar S.

Typewriting machines

Sheet or web

For feeding web record-medium

400902, B41J 1130

Patent

active

050188879

ABSTRACT:
Printers and copiers have paper handling mechanisms that incorporate form feeding tractors to move a continuous form or web having edge holes. It has been discovered that the web can be driven at a high acceleration yet uses a small number of pins by setting the pin pitch of the tractor greater than the pitch of the edge holes.

REFERENCES:
patent: 2122458 (1938-07-01), Elmer
patent: 3644812 (1972-02-01), Bitto et al.
patent: 3744820 (1973-07-01), Porter
patent: 4005810 (1977-02-01), Porter
patent: 4226353 (1980-10-01), Blaskovic et al.
patent: 4400105 (1983-08-01), Yeager et al.
patent: 4453660 (1984-06-01), Cornell et al.
patent: 4473179 (1984-09-01), Bauer
patent: 4538515 (1985-09-01), Tymkewicz et al.

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