Universal ribbon cartridge

Details Universal ribbon cartridge Universal ribbon cartridge

1979-10-01

1981-12-29

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Package for ribbon facilitating mounting of ribbon on...

4002351, 400243, B41J 3314

Patent

active

043079695

ABSTRACT:
A cartridge for accommodating a daisy wheel type printer is disclosed. The cartridge has a supply spool for holding a fresh supply of ribbon and a take-up spool for holding used ribbon. The cartridge includes two arms which define a path for the ribbon to pass between the paper and the printer mechanism. Two drive gears are serially engaged with each other and with the ribbon drive means. When the first drive wheel is driven by a drive shaft of the printer, the second acts as an idler gear so that the direction of ribbon take-up is the same as the direction of the rotation of the drive shaft. When the second gear is driven, it drives the ribbon drive gear means directly so that the rotational direction of the ribbon take-up is opposite that of the drive shaft. The drive gears are located and their lower portions are configured to engage the respective drive shafts of various printers. Improved bias of the idler wheel against the drive wheel for ribbon engagement, resulting in improved assembly of the cartridge, is provided.

REFERENCES:
patent: 3349887 (1967-10-01), Goff, Jr.
patent: 3904018 (1975-09-01), Denley
patent: 3918569 (1975-11-01), Parker
patent: 4079827 (1978-03-01), Work
patent: 4091913 (1978-05-01), Ku et al.
patent: 4132485 (1979-01-01), Hess

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