Thermal printer head using resistor heater elements as switching

Details Thermal printer head using resistor heater elements as switching Thermal printer head using resistor heater elements as switching

1974-08-05

1976-06-22

Albritton, C. L.

Electric heating

Heating devices

Combined with diverse-type art device

219543, 338 20, 338307, 338320, H05B 100

Patent

active

039653307

ABSTRACT:
A method and apparatus for a thermal printer head which uses individual heater elements as switching devices is disclosed. The printer head consists of an array of individual resistors each capable of causing a dot to print on thermally sensitive paper. The use of heater elements as switches reduces the total number of lead outs required for the printer head. A system that uses such a thermal printer head is also disclosed. The individual resistor heater elements have a voltage-current switching characteristic which enables them to be used as switching devices in addition to their function as heating elements.

REFERENCES:
patent: 3323241 (1967-06-01), Blair et al.
patent: 3478191 (1969-11-01), Johnson et al.
patent: 3483356 (1969-12-01), Kalt
patent: 3825722 (1974-07-01), Taniguchi
patent: 3870856 (1975-03-01), Taniguchi

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