Ink ribbon cartridge pinch roller

Details Ink ribbon cartridge pinch roller Ink ribbon cartridge pinch roller

1982-08-20

1984-08-14

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Endless ribbon or cartridge therefor

400197, 4002021, 4002351, 29132, B41J 3310

Patent

active

044653883

ABSTRACT:
An ink ribbon cartridge comprises a cartridge housing, an endless length of ink ribbon received in the housing, and a take-up roller and a pinch roller for transporting the ribbon and guiding the ribbon in a repetitively folded manner, characterized in that at least one of said take-up and pinch rollers consists of a compressed body of flexible or semi-rigid polyurethane foam. The use of compressed flexible or semi-rigid polyurethane foam results in improved rollers which have the good ribbon driving performance and driving stability.

REFERENCES:
patent: 3002866 (1961-10-01), Gartrell et al.
patent: 3229352 (1966-01-01), Balkin et al.
patent: 3237433 (1966-03-01), Doleman et al.
patent: 3858287 (1975-01-01), Christoffersen
patent: 3959573 (1976-05-01), Eddy et al.
patent: 4210403 (1980-07-01), Mazouet et al.
patent: 4289413 (1981-09-01), Seplin

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