Ribbon cassette for printer

Details Ribbon cassette for printer Ribbon cassette for printer

1996-05-23

1998-04-14

Yan, Ren

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400208, 464 32, B41J 3314, F16D 900

Patent

active

057384487

ABSTRACT:
Disclosed herein is a ribbon cassette for use with a printer, including a cassette case detachably mounted in the printer and an ink ribbon stored in the cassette case and partially exposed to face a print head provided in the printer. The ribbon cassette further includes a ribbon take-up member rotatably supported in the cassette case, a driven member rotatably supported in the cassette case and meshing with the ribbon take-up member through the ink ribbon, and a power transmitting member provided in the ribbon take-up member to connect the ribbon take-up member to a ribbon driving shaft provided in the printer. A breaking strength of the power transmitting member against a load from the ink ribbon is set smaller than that of the ribbon driving shaft. Accordingly, in the event that ribbon jam occurs, the power transmitting member breaks to thereby prevent fracture of the ribbon driving shaft in the printer.

REFERENCES:
patent: 2472046 (1949-11-01), Potter
patent: 2889162 (1959-02-01), Norris
patent: 2892329 (1959-09-01), Trigilio
patent: 3359171 (1967-12-01), Hanke
patent: 3753625 (1973-08-01), Fabrizio et al.
patent: 4513563 (1985-04-01), Roser et al.
patent: 5071376 (1991-12-01), Walker
patent: 5096315 (1992-03-01), Yamamoto et al.
patent: 5145213 (1992-09-01), Marrison et al.

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