Ink ribbon cartridge of a printing machine

Details Ink ribbon cartridge of a printing machine Ink ribbon cartridge of a printing machine

1986-11-20

1988-05-03

Pieprz, William

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

4001961, 400234, B41J 3202, B41J 3228

Patent

active

047416408

ABSTRACT:
An ink ribbon cartridge for use in a typewriter, printer and the like includes a driving mechanism to move a strip of ink ribbon out of the cartridge through a supply port and again into the cartridge through a take-up port and a deterrent mechanism to impart a back tension to the ink ribbon when pulled toward the take-up port from the supply port. The deterrent mechanism includes a guide post and a leaf spring whose forward end is pressed against the guide post with the ink ribbon sandwiched therebetween. The forward end of the leaf spring is provided with oppositely extending side projections which are inserted into the relief holes provided in the top and bottom walls of the cartridge. More preferably, the guide post extends from the bottom wall and extends into the relief hole of the top wall.

REFERENCES:
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patent: 4469457 (1984-09-01), Chida et al.
patent: 4630948 (1986-12-01), Karns

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