Head drive system for a thermal printer

Details Head drive system for a thermal printer Head drive system for a thermal printer

1986-12-02

1988-10-18

Goldberg, E. A.

Recorders

Thermal recording

400120, G01D 1510, B41J 320

Patent

active

047791020

ABSTRACT:
In a thermal or a thermal transfer printer using a thermal head which has heating elements arranged in one line in a main scanning direction, a thermal head drive system for printing out dots by multi-step modulation is disclosed. The heating elements are divided into an odd and an even dot groups and driven group by group on a time division basis. One line of data are recorded such that the odd dots and the even dots which neighbor each other in the main scanning direction are offset in a subscanning direction. When the elements which are next to a particular one of the elements are of the maximum drive level, they are driven at the same time. Further, those heating elements which are of the same level are driven at a time.

REFERENCES:
patent: 4141018 (1979-02-01), Mizuguchi et al.
patent: 4531133 (1985-07-01), Leng
patent: 4560988 (1985-12-01), Moriguchi et al.

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