Ink ribbon cassette including gear teeth configured to re-ink th

Details Ink ribbon cassette including gear teeth configured to re-ink th Ink ribbon cassette including gear teeth configured to re-ink th

1986-06-24

1988-05-31

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Renovation of used ribbon

4001961, 4002351, B41J 2712

Patent

active

047477130

ABSTRACT:
An ink ribbon cassette to be used in wire dot printer has an ink supply to lengthen a life cycle thereof. An ink ribbon is held between a drive gear and an idle gear and is delivered thereby. The ink supply contacts the idle gear so that ink is supplied from the idle gear to the ink ribbon. The teeth of the idle gear are specifically shaped such that the bottom of the teeth are formed in the shape of a circular arc so that the ink is uniformly supplied to the ink ribbon.

REFERENCES:
patent: 4153378 (1979-05-01), Scherrer et al.
patent: 4213716 (1980-07-01), Carson, Jr.
patent: 4400103 (1983-08-01), Daughters
patent: 4428695 (1984-01-01), Jamieson
patent: 4526488 (1985-07-01), Krull
patent: 4552469 (1985-11-01), Tsuge et al.
patent: 4616942 (1986-10-01), Nagasawa et al.
patent: 4636097 (1987-01-01), Goubeaux

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