Ribbon cartridge with improved ribbon tensioning and locking

Details Ribbon cartridge with improved ribbon tensioning and locking Ribbon cartridge with improved ribbon tensioning and locking

1977-09-06

1979-04-03

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400234, B41J 3314

Patent

active

041474392

ABSTRACT:
A ribbon cartridge for use in a typewriter and/or printer which cartridge has a supply of ribbon which is fed from within the cartridge across a gap where it is used by a typing or printing mechanism and returned to a driven take-up area, is disclosed, which cartridge includes an improved tensioning and locking apparatus, comprising a mechanically biased movable member positioned between the ribbon supply and its outlet, so as to bear against the ribbon, which member automatically takes up small overruns of ribbon from a supply and releasably locks the ribbon by means of friction contact when large overruns occur during use.

REFERENCES:
patent: 3356202 (1967-12-01), Goff
patent: 3974906 (1976-08-01), Lee et al.
patent: 4010839 (1977-03-01), Guerrini et al.
patent: 4013160 (1977-03-01), Colecchi et al.
patent: 4026492 (1977-05-01), Kern
IBM Technical Disclosure Bulletin, "Ribbon Cartridge with Brake," Arena et al., vol. 10, No. 4, Sep. 1967, pp. 484-485
Xerox Disclosure Journal, "Ribbon Feed Rolls," Plaza, vol. 1, No. 2, Feb. 1976, pp. 43-44.
Xerox Disclosure Journal, "Ribbon Cartridge with Foam Drag Element," Trezise et al., vol. 1, No. 2, Feb. 1976, pp. 47-48.
Xerox Disclosure Journal, "Constant Ribbon Tension Device," Frechette, vol. 1, No. 7, Jul. 1976, p. 37.
Xerox Disclosure Journal, "Ribbon Advance Mechanism," Mikes, vol. 2, No. 4, Jul./Aug. 1977, p. 47.

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