Ribbon elevating mechanism for ribbon cassettes

Details Ribbon elevating mechanism for ribbon cassettes Ribbon elevating mechanism for ribbon cassettes

1981-12-07

1984-01-03

Wright,Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400212, 400215, 400229, 400248, B41J 3314

Patent

active

044239734

ABSTRACT:
The invention relates to a mechanism for raising and lowering a ribbon in front of the typing area of a typewriter or similar machine. The mechanism is so designed that only a few lightweight plastic parts need be moved thereby greatly reducing the actuating force necessary to elevate a ribbon. The mechanism also is configured to track the ribbon such that deformation of the ribbon as could impair proper functioning of the lifting and/or transporting of the ribbon during the ribbon lifting motion is minimized.

REFERENCES:
patent: 3272305 (1966-09-01), Page
patent: 3490671 (1970-01-01), Hladky
patent: 3882989 (1975-05-01), Morelli
patent: 3899065 (1975-08-01), Brignole
patent: 3900099 (1975-08-01), Hengelhaupt
patent: 3904016 (1975-09-01), Hengelhaupt
patent: 3918569 (1975-11-01), Parker
patent: 4003460 (1977-01-01), Gray et al.
patent: 4020940 (1977-05-01), Daley et al.
patent: 4084683 (1978-04-01), Moss
Xerox Disclosure Journal, "Uniform Ribbon Tension for Impact Printer Ribbon", Kockler et al., vol. 4, No. 2, Mar./Apr. 1979, pp. 181-182.

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