Thin film thermal print head

Details Thin film thermal print head Thin film thermal print head

1975-07-31

1976-02-08

Albritton, C. L.

Electric heating

Heating devices

Combined with diverse-type art device

29611, 219543, 338308, 346 76R, 427126, H05B 100

Patent

active

040073521

ABSTRACT:
After the mesas are formed in the glass glaze over an aluminum oxide substrate by etching, and before resistive and conductive materials are deposited over the mesas by thin film techniques, an aluminum oxide underlayer is applied. The aluminum oxide underlayer provides controlled etching of the raised heater elements and conductors to prevent undesirable additional erosion of the glass glaze mesas.

REFERENCES:
patent: 3483356 (1969-12-01), Kalt
patent: 3495070 (1970-02-01), Zissen
patent: 3904461 (1975-09-01), Ester et al.

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