Thermal head driving method

Details Thermal head driving method Thermal head driving method

1982-04-27

1983-11-15

Goldberg, Elliot A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 76PH, G01D 900, G01D 1510

Patent

active

044159048

ABSTRACT:
A method of driving a thermal printing head includes expanding the printing time for a line which follows successive non-printed (blank) lines. In this manner, deterioration otherwise caused in the print density can be avoided without employing an auxiliary heater for the thermal head. Instead of expanding the printing time, the applied voltage may be increased to achieve the same result.

REFERENCES:
patent: 4219824 (1980-08-01), Asai
patent: 4262188 (1981-04-01), Beach
patent: 4271414 (1981-06-01), Williams et al.
patent: 4284876 (1981-08-01), Ishibushi et al.
patent: 4305080 (1981-11-01), Cunningham et al.

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