Typewriting machines – Including interposed inking device for record-medium – Package for ribbon facilitating mounting of ribbon on...
Patent
1978-09-20
1981-06-09
Wright, Jr., Ernest T.
Typewriting machines
Including interposed inking device for record-medium
Package for ribbon facilitating mounting of ribbon on...
400234, 4002351, 400641, B41J 3314
Patent
active
042722020
ABSTRACT:
A printer ribbon cartridge device includes structure for maintaining tension of a printer ribbon which is supplied and contained on a supply spool having an automatic brake for preventing unwinding thereof whenever the cartridge is not installed on a printer. Ribbon guide structure is provided so that the printer ribbon will be confined to a desired path, positive capstan feed rollers are provided of intermeshing gear type for positive feed of the printer ribbon and further gearing is provided to positively drive a slipping clutch element for a take-up spool. A one-way locking pawl also engages with the gearing to prevent rewinding of the printer ribbon after use and thereby prevent the reuse of same. The slip clutch for the take-up spool employs a gear driven input hub member provided with a central recess thereacross for supporting a deformed ring in an oval shape for driving contact by portions of the other circumference thereof against the inner surface of an outer take-up spool hub member. The overall device includes a first support panel and a second support panel having complementary projections and boss apertures formed respectively therewith for easy rapid assembly of all the components into a completed cartridge device.
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IBM Technical Disclosure Bulletin, "Nonstick Capstan Pinch Rolls," Denson et al. vol. 20, No. 2, Jul. 1977, pp. 710-711.
Schroeder Marvin C.
Stastny Edwin O.
Data Card Corporation
Wright, Jr. Ernest T.
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