Ink ribbon protecting mechanism in ink ribbon cartridge

Details Ink ribbon protecting mechanism in ink ribbon cartridge Ink ribbon protecting mechanism in ink ribbon cartridge

1981-11-20

1983-10-11

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

4001961, B41J 3314

Patent

active

044089104

ABSTRACT:
Disclosed is an ink ribbon protecting mechanism for preventing jamming of an ink ribbon which is contained in a folded state in an ink ribbon cartridge comprising a case member and a lid member. An ink ribbon contained in such ribbon cartridge is brought down or twisted by vibration or shock during transportation or the like, which results in occurrence of jamming of the ink ribbon during use. Occurrence of jamming is effectively prevented by this ink ribbon protecting mechanism.
The protecting mechanism comprises a protecting member including a plurality of needle-like or plate-like projections formed on a substrate, and these projections are inserted into through holes formed on the outer wall of a ribbon cartridge and intruded among laps of the folded ink ribbon. The ink ribbon is supported by these projections and is thus prevented from being folded or brought down or twisted by vibration or shock during transportation or the like.

REFERENCES:
patent: 2675115 (1954-04-01), Jones
patent: 3294228 (1966-12-01), Urso et al.
patent: 3726381 (1973-04-01), Murphy
patent: 3833108 (1974-09-01), Von Daeniken
patent: 4188134 (1980-02-01), Garrido
patent: 4325646 (1982-04-01), Sasaki
IBM Technical Disclosure Bulletin, "Cartridge Shipping Tab," Froehlich et al., vol. 20, No. 1, Jun. 1977, p. 42.

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