Disc ink ribbon

Details Disc ink ribbon Disc ink ribbon

1977-02-23

1978-06-06

Sewell, Paul T.

Typewriting machines

Including interposed inking device for record-medium

Endless ribbon or cartridge therefor

400202, B41J 3114, B41J 2704

Patent

active

040930610

ABSTRACT:
A rotable circular disc ribbon for use with a high speed impact printer. The disc ribbon includes a central ink storage chamber enclosing ink saturated porous material. The disc ribbon also includes an outer circumferential film portion positionable between the character dies or dot matrix pins of an impact printer and an image receiving web. Capillary action between ink storage chamber and the film portion of the ribbon provides continual replenishment of the ink in the film portion as it is depleted by impact printing on the web. This replenishment is further aided by centrifugal forces propelling the ink from the storage chamber to the film portion in amounts which are related to the speed of rotation of the ribbon disc.

REFERENCES:
patent: 381910 (1888-05-01), Crandall
patent: 2506255 (1950-05-01), VON Kraemer
patent: 3340982 (1967-09-01), Torley et al.
patent: 3460665 (1969-08-01), Dodsworth et al.
patent: 3707214 (1972-12-01), Ponzano
patent: 3844395 (1974-10-01), Mero et al.
IBM Tech. Disc. Bulletin, R. L. Cowardin et al., vol, 13, No. 8, Jan., 1971, p. 2465.

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