Electric heating – Heating devices – Combined with diverse-type art device
Patent
1979-08-15
1981-03-31
Albritton, C. L.
Electric heating
Heating devices
Combined with diverse-type art device
219543, 338308, 338309, 346 76PH, H05B 100
Patent
active
042595649
ABSTRACT:
A thermal printing head having a heating resistor prepared according to a thin-film technique and a wiring circuit prepared according to a thick-film technique achieves a high printing quality at a low cost. A thin-film resistor is formed on a heat-insulating dielectric layer which is, in turn, provided partially on a dielectric substrate, while thick-film lead electrodes, which are connected to a driving circuit, are formed on the dielectric substrate so as to make contact with the edge portion of the heat-insulating dielectric layer. Thin-film lead electrodes electrically connect the thick-film lead electrodes to the opposite ends of the thin-film resistor. The heat-insulating dielectric layer and the thick-film lead electrodes are provided by means of thick-film technique such as screen-printing and succeeding firing processes and the thin-film resistor and the thin-film lead electrodes are formed through thin-film technique such as sputtering or vacuum-evaporating process.
REFERENCES:
patent: 3607386 (1971-09-01), Galla et al.
patent: 3631512 (1971-12-01), Janning
patent: 3973106 (1976-08-01), Ura
patent: 4138605 (1979-02-01), Stapleton et al.
Kajiwara Yuji
Katoh Hidehiko
Ohkubo Toshio
Albritton C. L.
Nippon Electric Co. Ltd.
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