Ink ribbon cassette with a frictioning member for imparting vari

Details Ink ribbon cassette with a frictioning member for imparting vari Ink ribbon cassette with a frictioning member for imparting vari

1992-10-05

1994-04-19

Wiecking, David A.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400208, B41J 3352

Patent

active

053040082

ABSTRACT:
An ink ribbon cassette includes a cassette case for housing an ink ribbon and feeding it along a feed path, an ink ribbon guide for guiding the ribbon along the ink path and a cantilevered spring member disposed at an intermediate portion of the feed path of the ink ribbon. The cantilevered spring member includes a frictioning portion for imparting a smaller tension to the ink ribbon when the ink ribbon is fed from a supply end to a take-up end, while imparting a greater tension to the ink ribbon when the ink ribbon is fed from the take-up end to the supply end. The spring member is provided at a free end with the frictioning portion and is bent at an intermediate portion such that a supported end of the spring member and the free end thereof face each other.

REFERENCES:
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patent: 4838718 (1989-06-01), Okumura et al.
patent: 5033888 (1991-07-01), Okumura et al.

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