Typewriting machines – Including interposed inking device for record-medium – Means auxiliary to ribbon mechanism
Patent
1985-10-03
1988-12-13
Wright, Jr., Ernest T.
Typewriting machines
Including interposed inking device for record-medium
Means auxiliary to ribbon mechanism
400208, 400234, 242198, B41J 3536
Patent
active
047906774
ABSTRACT:
Apparatus and method for use with a tape cartridge of a printer to determine halt of tape feed from a supply reel to a take-up reel of the cartridge comprising reflective and non-reflective portions on the supply reel rotating therewith and an assembly including a light source and a sensor fixed in position to face the supply reel to cooperate with the reflective and non-reflective portions without mechanical contact therewith for producing a train of successive electrical output pulses as the supply reel rotates. Upon cessation of the output pulses the tape feed is halted. The system also provides a mechanical locking device for effecting positive locking of the supply reel at the end of tape feed.
REFERENCES:
patent: 3442366 (1969-05-01), Spears
patent: 4010839 (1977-03-01), Guerrini et al.
patent: 4091913 (1978-05-01), Ku et al.
patent: 4111378 (1978-09-01), Barwick
patent: 4115013 (1978-09-01), Hedstrom
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patent: 4337001 (1982-06-01), Cappotto
patent: 4368992 (1983-01-01), Gagnebin
patent: 4373824 (1983-02-01), Olsen
IBM Technical Disclosure Bulletin, "Constant-Tension Ribbon Cartridge", Bullock et al., vol. 23, No. 5, Oct. 1980, pp. 1741-1742.
IBM Technical Disclosure Bulletin, "Microcontrolled Ribbon Motion and Splice Detection System", Cavill et al., vol. 24, No. 10, Mar. 1982, pp. 5015-5016.
Primages Inc.
Wright, Jr. Ernest T.
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