Ink ribbon cartridge

Details Ink ribbon cartridge Ink ribbon cartridge

1994-08-03

1996-02-20

Yan, Ren

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

400207, 400242, 400246, 2423432, 2423452, 267163, B41J 3528

Patent

active

054924227

ABSTRACT:
An ink ribbon cartridge including a cartridge housing having a first side wall and a second side wall opposed to each other. The cartridge housing has a pair of first engaging portions on an inside surface of the first side wall. A supply spool and a take-up spool are rotatably disposed between the first and second side walls in spaced relation and carry an ink ribbon wound thereon. The spools have first end portions formed with flanges and second end portions opposed to the first end portions. The flanges have second engaging portions engageable with the first engaging portions. U-shaped leaf springs are disposed between the second side wall and the second end portions of the spools and bias the first end portions of the spools against the first side wall. The U-shaped leaf springs include base portions and annular portions extending from the base portions, respectively. The base portions have openings receiving the second end portions of the spools, respectively.

REFERENCES:
patent: 4883234 (1989-11-01), Yamakawa et al.
patent: 5079565 (1992-01-01), Shimizu et al.
patent: 5110228 (1992-05-01), Yokomizo

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