Continuous or endless loop printing ribbon cassettes and reinkin

Details Continuous or endless loop printing ribbon cassettes and reinkin Continuous or endless loop printing ribbon cassettes and reinkin

1997-02-24

1997-11-25

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Renovation of used ribbon

4001961, B41J 3114

Patent

active

056904380

ABSTRACT:
Continuous or endless loop printing ribbon cassettes and reinking devices therefor which will control the start of reinking transfer flow and the reinking transfer flow rate from the reinking device to the continuous or endless loop printing ribbon fabric substrate. One preferred embodiment of the reinking device in accordance with the present invention utilizes two cylindrical ink rolls positioned concentric to each other. The inner ink roll is saturated with an ink having a normal flow rate and acts as a reservoir. The outer ink roll is saturated with an ink having a higher viscosity or other materials which delay the start of reinking transfer flow when the continuous or endless printing ribbon cassette is new and controls the ink transfer flow rate during the useful life of the continuous or endless loop printing ribbon cassette. In a second preferred embodiment, the inner ink roll is replaced by an inner ink reservoir which controls the ink transfer flow rate to the porous outer ink roll.

REFERENCES:
patent: 2760464 (1956-08-01), Roggenburger
patent: 4340313 (1982-07-01), Bishop
patent: 4636097 (1987-01-01), Goubeaux
patent: 4653947 (1987-03-01), Echols
patent: 4747711 (1988-05-01), Motta et al.
patent: 4968161 (1990-11-01), Kunitomi et al.
patent: 5005996 (1991-04-01), Paterra et al.
patent: 5215012 (1993-06-01), Kanno et al.
IBM Technical Disclosure Bulletin, vol. 33, No. 2, Jul., 1990 "Reink Roller Housing," p. 106.

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