Printer ribbon cassette and feed mechanism

Details Printer ribbon cassette and feed mechanism Printer ribbon cassette and feed mechanism

1982-11-04

1983-08-30

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400196, 400233, 400235, B41J 3528

Patent

active

044013930

ABSTRACT:
An improved, disposable inexpensive feed mechanism is uniquely incorporated in a cassette having a flexible or movable wall driven by contact with a moving printer carriage or the like. Friction facing of the moving wall cooperates with a fixed friction facing on an interiorly placed portion of a cassette wall with a ribbon between the two friction faces. The friction facing of the movable part has angled fiber elements that engage the ribbon in one direction but slip easily over the ribbon in the opposite direction. The moving printer carriage or the like contacts a movable portion of the cassette wall in each pass and indexes the ribbon slightly to provide a fresh supply across a platen. The platen may be integrally molded as a part of the cassette and can be made of plastic. The entire mechanism is disposable, is contained in a single clean package and is very low cost. No rollers, feed roll drives or motors are required.

REFERENCES:
patent: 3436245 (1969-04-01), Grundman
patent: 4053040 (1977-10-01), McGourty
patent: 4269520 (1981-05-01), Gabler

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