Thermal heat driving system

Details Thermal heat driving system Thermal heat driving system

1982-12-03

1984-07-31

Eickholt, E. H.

Typewriting machines

Typing by other than type-face or type-die

Thermal

346 76PH, 219216, B41J 302

Patent

active

044627041

ABSTRACT:
A thermal head driving system having a plurality of thermal heads, an electric power source commonly used to drive the heads at the same voltage. A pulse generator provided between the power source and each of the heads for producing a driving pulse having a width determined in accordance with a ratio of a resistance value of each thermal head. The plurality of thermal heads are accordingly driven by the respective driving pulses corresponding thereto to effectuate thermal recording.

REFERENCES:
patent: 3984809 (1976-10-01), Dertouzos et al.
patent: 4038516 (1977-07-01), Bergvall
patent: 4113391 (1978-09-01), Minowa

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