Thermal recording apparatus

Details Thermal recording apparatus Thermal recording apparatus

1984-09-28

1986-05-20

Goldberg, E. A.

Recorders

Thermal recording

400120, 219216, G01D 1510

Patent

active

045904871

ABSTRACT:
A thermal head drive circuit is provided in which the thermal energy applied during printing is corrected due to the black-white ratio, the thermal head's heat accumulation and the heat history data. The circuit includes a heat accumulation state operator, a pulse width calculator, a pulse width memory and a pulse width determining circuit. The circuit also includes a fundamental pulse width determining circuit and an auxiliary pulse width determining circuit for determining the additional pulse width to be applied with the output from the fundamental pulse width determining circuit.

REFERENCES:
patent: 4454516 (1984-06-01), Moriguchi et al.
patent: 4464669 (1984-08-01), Sekiya et al.

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