Tear resistant ribbon for non-impact printing

Details Tear resistant ribbon for non-impact printing Tear resistant ribbon for non-impact printing

1980-03-27

1981-09-29

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Ribbon, per se

400118, 428412, B41J 3102

Patent

active

042919940

ABSTRACT:
The present invention is concerned with a ribbon for non-impact printing. The ribbon comprises a transfer coating and a substrate containing resin which is a mixture of from 50% to 90% by weight polycarbonate and from 50% to 10% by weight of a block copolymer of bis-phenol A Carbonate and dimethyl siloxane, and containing from about 15% to about 40% by weight of the resin of electrically conductive carbon black.

REFERENCES:
patent: 2713822 (1955-07-01), Newman
patent: 3117018 (1964-01-01), Strauss
patent: 3413183 (1968-11-01), Findlay et al.
patent: 3744611 (1973-07-01), Montanari et al.
patent: 3844826 (1974-10-01), Buchner et al.
patent: 4103066 (1978-07-01), Brooks et al.
IBM Technical Disclosure Bulletin, "Resistive Ribbon Ink Layers", Crooks et al., vol. 22, No. 2 Jul. 1979, p. 782.

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