Ribbon cartridge having integral gear supports

Details Ribbon cartridge having integral gear supports Ribbon cartridge having integral gear supports

1989-08-21

1992-01-28

Wiecking, David A.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400208, B41J 3326

Patent

active

050838784

ABSTRACT:
A ribbon cassette having top and bottom enclosures forming a cavity including a ribbon storage compartment. Ribbon drive means, which includes a pair of spaced elements, is mounted in the cavity for engaging or "pinching" the ribbon therebetween for advancement into the storage compartment. One or both of the elements may be a gear. When only one element is a gear, the other element is a spring assembly. A combined gear support and "stripper" assembly is molded with the upper and lower enclosures and serves as a support for rotatably supporting the gear or gears in the cavity while also preventing the ribbon from winding around or otherwise binding to the gear or gears.

REFERENCES:
patent: 4213716 (1980-07-01), Carson, Jr.
patent: 4232976 (1980-11-01), Bernardis et al.
patent: 4243334 (1981-01-01), Shigemori
patent: 4279522 (1981-07-01), Yonkers
patent: 4397574 (1983-08-01), Wojdyla
patent: 4900170 (1990-02-01), Beck et al.
patent: 4940345 (1990-07-01), Raar

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