Ink ribbon cassette

Details Ink ribbon cassette Ink ribbon cassette

1986-02-28

1988-04-05

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400208, 4002362, 74508, 242 755, 242196, B41J 3338

Patent

active

047355182

ABSTRACT:
An ink ribbon cassette having a multicarbon ribbon for switching from a rapid to a slow multicarbon mode is provided. The cassette includes a coupling element to be driven by a printing device. The coupling element rotates a manually shiftable gear mechanism which includes two sets of gears, which are axially displaceable with respect to each other. Each set of gears includes gears of different sizes with a driving wheel mounted on one set of gears. The driving wheel engages the ink ribbon take-up reel. The ability to change the speed of the ribbon advance makes it possible to use the same multicarbon ink ribbon cassette either for high print quality or for longer print duration.

REFERENCES:
patent: 4065983 (1978-01-01), Mimura
patent: 4079634 (1978-03-01), Johnstone
patent: 4137796 (1979-02-01), Bostrom
patent: 4231667 (1980-11-01), Behrendt et al.
patent: 4307969 (1981-12-01), Daughters
patent: 4317636 (1982-03-01), Hume
patent: 4353658 (1982-10-01), Craft
patent: 4369884 (1983-01-01), Daughters
patent: 4605325 (1986-08-01), Hofmann
IBM Tech. Disc. Bulletin, "Variable Speed Ribbon Drive Mechanism", Hagiwara, vol. 24, No. 11B, Apr. 1982, pp. 6112-6113.
IBM Tech. Disc. Bulletin, "Apparatus for Altering Ribbon Feed Increments", Blanck et al., vol. 26, No. 1, Jun. 1983, pp. 301-303.

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