Ink ribbon cassette

Details Ink ribbon cassette Ink ribbon cassette

1986-05-13

1988-03-15

Watkins, Donald

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 754, 242 673R, 242199, 400208, B41J 3352, B41J 3200

Patent

active

047307803

ABSTRACT:
An ink ribbon cassette includes a case, supply side core rotatably held by the case and having an uneven portion in a portion thereof, an ink ribbon wound on the core, a take-up side core rotatably held by the case to take up the ink ribbon, and a spring resiliently engaged with the uneven portion of the supply side core and resiliently pressing the outer periphery of the ink ribbon wound on the supply side core.

REFERENCES:
patent: 3172611 (1965-03-01), Harris
patent: 3682407 (1972-08-01), Lichtenstein et al.
patent: 3880373 (1975-04-01), Cook
patent: 4013160 (1977-03-01), Colecchi et al.
patent: 4422592 (1983-12-01), Swope et al.
patent: 4434950 (1984-03-01), Nunnerich et al.
patent: 4456193 (1984-06-01), Westover
patent: 4496255 (1985-01-01), Meintrup et al.
patent: 4625930 (1986-12-01), Urlick

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