Power circuit for thermal head

Details Power circuit for thermal head Power circuit for thermal head

1986-09-10

1988-02-09

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Miscellaneous systems

Power packs

400120, 346 76PH, 219216, 101 9304, H05B 102

Patent

active

047243368

ABSTRACT:
Resistance of a thermal head is stored as a digital signal in a head resistance memory. Output according to data in the head resistance memory is calculated by a head voltage calculation circuit for storing a correlation between resistance of the thermal head at a fixed normal temperature and supply voltage. The output from the head voltage calculation circuit is converted by a D/A converter to a reference voltage, which is then fed to a constant-voltage power source for applying the supply voltage to the thermal head, so that an optimum supply voltage to the thermal head may be automatically set, and temperature of the thermal head generating heat may be maintained constant.

REFERENCES:
patent: 3874493 (1975-04-01), Boyd
patent: 4268838 (1981-05-01), Nakano et al.
patent: 4488827 (1984-12-01), Haganuma
patent: 4496824 (1985-01-01), Kawai
patent: 4500893 (1985-02-01), Sakura et al.
patent: 4511903 (1985-04-01), Miyazaki et al.
patent: 4532523 (1985-07-01), Tanaka
patent: 4535340 (1985-08-01), Moriguchi et al.
patent: 4540991 (1985-09-01), Kariya et al.
patent: 4563691 (1986-01-01), Noguchi
patent: 4573058 (1986-02-01), Brooks
patent: 4587530 (1986-05-01), Noguchi
patent: 4651166 (1987-03-01), Katsuragi

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