Method of controlling a thermal head

Details Method of controlling a thermal head Method of controlling a thermal head

1987-05-29

1989-03-28

Goldberg, E. A.

Recorders

Thermal recording

400120, G01D 1510

Patent

active

048168432

ABSTRACT:
A thermal head controlling method applicable to a thermal printer, a facsimile and other thermal recording apparatus selectively energizes heating elements of a thermal head in response to graphic and text data which are fed from a host machine, thereby printing out the data. The energy applied to the heating elements is selected to be greater when text data are to be printed than when graphic data are to be printed. The thermal head is driven by producing, for a pixel being observed, correction data for odd dots and correction data for even dots while referencing data positioned predetermined numbers of dot lines before the pixel observed, data predetermined numbers of dot lines after the pixel observed, and data positioned predetermined numbers of dots next to the pixel observed.

REFERENCES:
patent: 4567488 (1986-01-01), Moriguchi et al.
patent: 4675697 (1987-01-01), Sasaki et al.
patent: 4688051 (1987-08-01), Kawakami et al.

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