Apparatus and method for printing using a thermal head

Details Apparatus and method for printing using a thermal head Apparatus and method for printing using a thermal head

1986-12-15

1988-06-14

Pellinen, A. D.

Recorders

Thermal recording

346 11, G01D 1510

Patent

active

047515201

ABSTRACT:
In a thermal printer with a thermal head having a plurality of heating elements arranged in line in a direction of main scanning, each of the heating elements having a plurality of heating sections arranged in a sub scanning direction with a predetermined pitch between two consecutive heating sections, it is detected first whether high density mode or low density mode is instructed and all of the heating elements of the thermal head are energized when the high density mode has been instructed, or every other heating element is energized when the low density mode has been instructed; then the thermal head being shifted relative to print paper in the sub scanning direction by a distance substantially equal to the pitch; then all of the heating elements being energized when the high density mode has been instructed, or every other heating element, which have not been energized in a previous energizing cycle, being energized when the low density mode has been instructed.

REFERENCES:
patent: 4484231 (1984-11-01), Eguchi
patent: 4560988 (1985-12-01), Moriguchi et al.
patent: 4675697 (1987-06-01), Sasaki et al.

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