Ribbon feed and lift mechanism for a typewriter

Details Ribbon feed and lift mechanism for a typewriter Ribbon feed and lift mechanism for a typewriter

1979-10-30

1982-05-11

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400212, 400214, 400225, 400227, 4002361, 400696, 4006971, B41J 3314

Patent

active

043290728

ABSTRACT:
In a daisy wheel or rotary print wheel typewriter, a single motor (stepper motor) is employed to accomplish both ribbon lift and feed for typewriter ribbon and correction ribbon loaded in a cartridge assembly. A single motor drive moves a cartridge assembly support about an axis to present either the typewriter ribbon or the correction ribbon to the print point at the print line. In the first portion of the arc that the cartridge assembly moves, normal typing on the typewriter ribbon occurs, only the feed ratchet for the typewriter ribbon being engaged. Alternately, when the rotation is greater, to present a correction ribbon at the print line, the added elevation of the cartridge assembly causes disengagement of the normal ratchet feed for the typewriter ribbon but allows advancement of the correction ribbon.

REFERENCES:
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patent: 710144 (1902-09-01), De Wallace
patent: 3859712 (1975-01-01), Tramposch
patent: 3871507 (1975-03-01), Perry et al.
patent: 3904017 (1975-09-01), Frechette
patent: 3905465 (1975-09-01), Frechette et al.
patent: 3927746 (1975-12-01), Wolowitz
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patent: 4030591 (1977-06-01), Martin et al.
patent: 4111293 (1978-09-01), Kockler et al.
patent: 4203677 (1980-05-01), Hatsell
IBM Technical Disclosure Bulletin, "Erase Ribbon Lift and Advancing Mechanism", Mathews, vol. 19, No. 7, Dec. 1976, pp. 2393-2394.
IBM Technical Disclosure Bulletin, "Two-Color Cartridge Ribbon System with Correction", Schaefer, vol. 22, No. 6, Nov. 1979, pp. 2327-2329.
IBM Technical Disclosure Bulletin, "Ribbon Cartridge", Okcuoglu, vol. 22, No. 9, Feb. 1980, p. 4120.
IBM Technical Disclosure Bulletin, "Multiple Ribbon Cartridge Color Printer", Meier et al., vol. 22, No. 10, Mar. 1980, pp. 4481-4482.

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