Paper feed device

Details Paper feed device Paper feed device

1987-05-18

1988-05-10

Sewell, Paul T.

Typewriting machines

Sheet or web

For feeding sheet from stack or pack holder

226188, 271 3, 271 10, 400625, 400617, B41J 1158, B41J 1303

Patent

active

047431326

ABSTRACT:
A paper feed device of the invention comprises a transport gear connected in coaxial relationship to a transport roller interposed in a paper transporting route, a change-over arm which is rocked within a predetermined fixed range when the direction of rotation of a bidirectionally rotatable platen is reversed, and an idler gear mounted at a rocking free end of the change-over arm and connected to be normally rotated by power transmitted from the platen. The idler gear is selectively meshed with the transport gear in response to a rocking motion of the change-over arm, whereby a turning force of the platen is transmitted to the transport roller to transport paper only when the platen is rotated in one direction. Such a manner of transmission of rotation is attained without the necessity of a one-way clutch.

REFERENCES:
patent: 4053092 (1977-10-01), Edwards
patent: 4222557 (1980-09-01), Wu
patent: 4248415 (1981-02-01), Steinhilber
patent: 4269522 (1981-05-01), Levinson
patent: 4362409 (1982-12-01), Endo
patent: 4572418 (1986-02-01), Hirata
patent: 4577984 (1986-03-01), Yamamoto
patent: 4585224 (1986-04-01), Kuzuya
patent: 4606663 (1986-08-01), Christoph
patent: 4623898 (1986-11-01), Yamamoto
patent: 4627607 (1986-12-01), Ishii
patent: 4652161 (1987-03-01), Crean

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