Paper feed mechanism with varying contact pressure

Details Paper feed mechanism with varying contact pressure Paper feed mechanism with varying contact pressure

1983-10-26

1985-08-27

Burr, Edgar S.

Typewriting machines

Sheet or web

Including friction-feed means

400637, B41J 1126

Patent

active

045375216

ABSTRACT:
The paper transport shaft of a paper feed mechanism is movably mounted on an arm of a frame-supported spring wire lever. Another arm of the spring wire lever is pivotably mounted and may be set to flex the body of the spring wire lever through a pivot lever. Depending on the pivoting of the pivot lever the contact pressure between a paper pressure roller mounted on the paper transport shaft and a platen is varied. Selectively, the paper transport shaft can be pivoted away from the platen to allow adjustment of the paper inserted in the paper feed mechanism.

REFERENCES:
patent: 784366 (1905-03-01), Webb
patent: 1371909 (1921-03-01), Kurowski
patent: 1401103 (1921-12-01), Helmond
patent: 2007360 (1935-07-01), Berger
patent: 4221489 (1980-09-01), Engle et al.
patent: 4342521 (1982-08-01), Kuhn
patent: 4364683 (1982-12-01), Shakib et al.
IBM Technical Disclosure Bulletin, "Paper-Handling Apparatus for Typewriters and Printers", Jenney et al., vol. 20, No. 12, May 1978, p. 5221.

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