Switching regulator for terminal printhead

Details Switching regulator for terminal printhead Switching regulator for terminal printhead

1982-04-23

1988-04-05

Wong, Peter S.

Electric heating

Heating devices

Combined with diverse-type art device

323351, 323283, H04L 1534, H05B 100

Patent

active

047360895

ABSTRACT:
The thermal printhead of a printing terminal requires a controlled voltage to insure uniformity of the print copy. Printhead temperature is sensed by a voltage generating diode on the printhead itself. This feedback voltage is used to control the reference voltage of a switching regulator power supply which in turn provides power to the thermal printhead. The switching regulator comprises an efficient means of providing a controlled voltage to the thermal printhead.

REFERENCES:
patent: 3577137 (1971-05-01), Brennan, Jr.
patent: 3835368 (1974-09-01), Williams
patent: 3878358 (1975-04-01), Barton et al.
patent: 3906310 (1975-09-01), Esashika
patent: 3946302 (1976-03-01), Kovalick et al.
patent: 4059844 (1977-11-01), Stewart
patent: 4176272 (1979-11-01), Powers
G. M. Heiling et al., "Thermal Print Head Power Supply Regulator", IBM Technical Bulletin, vol. 22, No. 5, Oct. 1979, p. 2023.

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