Film ribbon cassette with mechanism for preventing reverse rotat

Details Film ribbon cassette with mechanism for preventing reverse rotat Film ribbon cassette with mechanism for preventing reverse rotat

1991-02-08

1992-10-06

Eickholt, Eugene H.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400236, 242197, 242206, B41J 3314

Patent

active

051526212

ABSTRACT:
A cassette comprises a driving roller provided with a device for preventing the reverse rotation, a driving pulley connected with the driving roller, a rubber belt for transmitting a motion of the driving pulley and a take-up spool on which a film ribbon is wound, and optionally a mechanism for maintaining tension occurred in the film ribbon constant. This arrangement ensures a unidirectional rotation of the driving roller and a correct tension of the ribbon at all times, whereby high quality in printing can be attained.

REFERENCES:
patent: 3349887 (1967-10-01), Goff, Jr.
patent: 3804227 (1974-04-01), Cappotto et al.
patent: 4034935 (1977-07-01), Plaza et al.
patent: 4337001 (1982-06-01), Cappotto
patent: 4339211 (1982-07-01), Alexander et al.
patent: 4347008 (1982-08-01), Jagodzinski et al.
patent: 4400103 (1983-08-01), Daughters
patent: 4448556 (1984-05-01), Trezise et al.
patent: 4650357 (1987-03-01), Sidvers et al.
patent: 4990008 (1991-02-01), Hwang
patent: 5005999 (1991-04-01), Raar et al.
"Ribbon Back Check Mechanism" IBM Technical Disclosure Bulletin, vol. 27, No. 12 May 1985 pp. 6855-6856.
"Ribbon Cartridge with Brake" IBM Technical Disclosure Bulletin, vol. 10, No. 4, Sep. 1967, pp. 484-485.
"Ribbon Feed for Biodirectional Printer" IBM Technical Disclosure Bulletin, vol. 23, No. 4, Sep. 1980, pp. 1517-1526.

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