Ribbon cassette

Details Ribbon cassette Ribbon cassette

1991-10-10

1993-01-12

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Endless ribbon or cartridge therefor

400207, B41J 3200

Patent

active

051784750

ABSTRACT:
A ribbon cassette has a first tension spring located at an exit port of a cavity of the cassette and a second tension spring located at one corner of the cassette which provides a correct tautness of the ribbon as it travels past the line of printing. The cassette also has a ribbon shield which is positioned relative to printing elements to maintain the ribbon in a straight plane along the line of printing.

REFERENCES:
patent: 3974906 (1976-08-01), Lee et al.
patent: 4209261 (1980-06-01), Bell et al.
patent: 4397574 (1983-08-01), Wojdyla
patent: 4582439 (1986-04-01), LaSpesa
patent: 4611939 (1986-09-01), Fujiwara
patent: 4616942 (1986-10-01), Nagasawa et al.
patent: 4741639 (1988-05-01), Fausto et al.
patent: 4758105 (1988-07-01), Nagasawa et al.

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