Thermal head

Details Thermal head Thermal head

1983-08-01

1984-09-18

Eisenzopf, Reinhard J.

Recorders

Thermal recording

400120, 219216, G01D 1510

Patent

active

044727232

ABSTRACT:
A thermal head for high speed printing with high temperature comprises a dielectric substrate, a first thin S.sub.i O.sub.2 layer on the substrate, heater layers on the first S.sub.i O.sub.2 layer, conductive layers for coupling the heater layer with an external circuit, a second thin S.sub.i O.sub.2 layer on the heater layer, and a protection layer on the second S.sub.i O.sub.2 layer. The width of the heater layer is less than 30 .mu.m, and the preferable thickness of the first and second S.sub.i O.sub.2 layers is less than 2 .mu.m. Preferably, the heater layer is made of tantalium nitride (T.sub.a2 N).

REFERENCES:
patent: 4136274 (1979-01-01), Shibata et al.
patent: 4232213 (1980-11-01), Taguchi et al.

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