Ribbon shifting device for a printing apparatus

Details Ribbon shifting device for a printing apparatus Ribbon shifting device for a printing apparatus

1986-04-03

1987-10-06

Pearson, Charles A.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

4002161, B41J 3200, B41J 3514

Patent

active

046979425

ABSTRACT:
A ribbon shifting device has a cassette holder for holding a multicolor ribbon cassette, which is moved in a predetermined direction by a cam. The cam is driven by a driving means through a gear train consisting of at least two gears. When the cassette holder is located at the home position, a recess formed in one of the meshing gear is brought opposite to the other gear, so that the gears are disengaged, and then an urging means urges the cam in a direction to bring the gears into engagement. Thus, the adjustment of the home position of the cassette holder is achieved simultaneously, accurately and easily.

REFERENCES:
patent: 4425046 (1984-01-01), Van Horne et al.

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