Multicolor ink ribbon having barrier and protective layers

Details Multicolor ink ribbon having barrier and protective layers Multicolor ink ribbon having barrier and protective layers

1993-09-30

1995-04-11

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Ribbon, per se

4002404, 400241, B41J 3105, B41J 3516

Patent

active

054052033

ABSTRACT:
A multicolor ink ribbon for use with a dot impact printer includes at least three layers. The layers include an ink layer composed of at least one colored ink ribbon having a first surface which forms a printing surface of the multicolor ink ribbon, an intermediate barrier layer having a first surface which covers a second surface of the ink layer, for preventing ink penetration from the ink layer therethrough, and a protective layer having a first surface which covers a second surface of the intermediate barrier layer and having a second surface which forms a printing head surface of the multicolor ribbon. The intermediate barrier layer prevents ink penetration from the ink layer into the protective layer, and the protective layer protects the intermediate barrier layer from physical deterioration due to impact from a printing head during use.

REFERENCES:
patent: 2728439 (1955-12-01), Murphy et al.
patent: 3010559 (1961-11-01), Ploeger, Jr.
patent: 3460666 (1969-08-01), Ploeger, Jr.
patent: 4526487 (1985-07-01), Ikeda
patent: 4569609 (1986-02-01), Snyder, Jr. et al.
patent: 4694305 (1987-09-01), Shiomi et al.
patent: 4886386 (1989-12-01), Paffhausen et al.
IBM Technical Disclosure Bulletin, vol. 26 No. 12, May 1984, pp. 6570-6571 "Multi-color Ink Ribbon Cassette", Kanno et al.

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