Silicon dioxide intermediate layer in thermal transfer medium

Details Silicon dioxide intermediate layer in thermal transfer medium Silicon dioxide intermediate layer in thermal transfer medium

1981-12-22

1983-12-06

Wright, Jr., Ernest T.

Typewriting machines

Typing by other than type-face or type-die

Thermal

400198, 4002411, 428914, B41J 3100

Patent

active

044190247

ABSTRACT:
Disclosed is a thermal transfer medium which comprises a mixture of a thermosetting polyimide, a thermoplastic polyimide, and graphite. It has a steel support layer and an intermediate layer of silicon dioxide. An outer layer on the steel is the thermal ink. The mixture is applied as a dispersion with a precursor of the thermosetting polyimide. The ribbon may be recoated at the typing station by applying a hot-melt of the ink.

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IBM Technical Disclosure Bulletin, vol. 24, No. 3, Aug. 1981, entitled "Thermal Efficiency Improvement by Anodization" by P. A. Bowlds et al. at pp. 1356-1357.

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