Ribbon cassette having housing with integrally formed biasing fi

Details Ribbon cassette having housing with integrally formed biasing fi Ribbon cassette having housing with integrally formed biasing fi

1999-04-05

2000-09-05

Yan, Ren

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400234, 2423451, 24261521, B41J 3528

Patent

active

061132918

ABSTRACT:
A compact ribbon cassette for dispensing and storing a ribbon or tape. The supply and take-up rolls of ribbon or tape are disposed upon a common rotatable shaft mounted for rotation within the housing. A unique chevron disposed adjacent the take-up roll and on the post-printing portion of the cassette causes the dispensed ribbon to reverse direction and change level and be presented for storage upon the take-up roll. The supply roll is under tension because a plurality of spring fingers push against a friction plate, thereby pressing the supply roll against an inner partition plate. The ribbon moves straight off the supply roll without bunching. A spring-loaded ribbon tensioner reduces slack in the ribbon by applying tension to the ribbon.

REFERENCES:
patent: 3804227 (1974-04-01), Cappotto et al.
patent: 3897866 (1975-08-01), Mueller
patent: 3960259 (1976-06-01), Guerrini et al.
patent: 4437779 (1984-03-01), Goff, Jr., et al.
patent: 4511271 (1985-04-01), Oberto
patent: 4650351 (1987-03-01), Engle et al.
patent: 4668961 (1987-05-01), Hiramatsu
patent: 4687358 (1987-08-01), Saitou

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