Ribbon feed system for a matrix printer

Details Ribbon feed system for a matrix printer Ribbon feed system for a matrix printer

1980-12-19

1983-10-11

Wright, Jr., Ernest T.

Typewriting machines

Typing by other than type-face or type-die

Thermal

400225, 400229, 400234, 4002351, 346 76R, B41J 304

Patent

active

044089082

ABSTRACT:
A ribbon feed system for a matrix printer utilizes metering rollers located on the printhead carrier to maintain a substantially zero ribbon velocity relative to the receiving medium with an on-carrier ribbon feed. By coordinating roller rotation with carrier motion, relative motion that would tend to cause smearing during mark formation is avoided. For printers that inject current into the ribbon to cause printing, friction drag is reduced and tension control is simplified by collecting current at the metering rollers for return to the printhead energizing circuitry. Such dual use of the metering rollers takes advantage of the firm intimate contact that exists for metering to establish a high quality electrical connection. A tension controlled brake at the ribbon supply serves to assure tensions are held within a narrow range at the printhead with such a ribbon metering system.

REFERENCES:
patent: 2713822 (1955-07-01), Newman
patent: 2838250 (1958-06-01), Stavrakis et al.
patent: 3442366 (1969-05-01), Spears
patent: 3623122 (1971-11-01), Fotland
patent: 3744611 (1973-07-01), Montanari et al.
patent: 3804227 (1974-04-01), Cappotto et al.
patent: 3841459 (1974-10-01), Buschmann et al.
patent: 3855448 (1974-12-01), Hanagata et al.
patent: 3877561 (1975-04-01), Guerrini et al.
patent: 3891991 (1975-06-01), Hurst
patent: 3904015 (1975-09-01), Boyden et al.
patent: 3939957 (1976-02-01), Bittner
patent: 3960259 (1976-06-01), Guerrini et al.
patent: 3974982 (1976-08-01), Stone
patent: 4033445 (1977-07-01), Oddicini
patent: 4145697 (1979-03-01), Ballinger
patent: 4147439 (1979-04-01), Colecchi
patent: 4195937 (1980-04-01), Baran
patent: 4232976 (1980-11-01), Bernardis et al.
patent: 4252450 (1981-02-01), Goodman et al.
patent: 4300847 (1981-11-01), Hoffman et al.
patent: 4303345 (1981-12-01), Lada
patent: 4329071 (1982-05-01), Applegate et al.
patent: 4329075 (1982-05-01), Applegate et al.
patent: 4345845 (1982-08-01), Bohnhoff et al.
Xerox Disclosure Journal, "Ribbon Feed Rolls", Plaza, vol. 1, No. 2, Feb. 1976, pp. 43-44.
IBM Technical Disclosure Bulletin, "Ribbon Drive", Darwin, vol. 19, No. 4, Sep. 1976, pp. 1407-1408.
IBM Technical Disclosure Bulletin, "Gear Drive Ribbon Reversing Mechanism", Nolden et al., vol. 20, No. 2, Jul. 1977, pp. 728-729.
IBM Technical Disclosure Bulletin, "Variable Pitch Ribbon Feed", Greer, vol. 20, No. 3, Aug. 1977, pp. 1072-1073.
Xerox Disclosure Journal, "Ribbon Advance Mechanism", Mikes, vol. 2, No. 4, Jul./Aug. 1977, p. 47.
IBM 5100 Basic Reference Manual, Fourth Edition (Jul. 1977), pp. 173-175.

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