Wax transfer type thermal printing method and thermal printer

Details Wax transfer type thermal printing method and thermal printer Wax transfer type thermal printing method and thermal printer

1992-12-04

1995-01-17

Fuller, Benjamin R.

Recorders

Thermal recording

358298, B41J 2325

Patent

active

053829654

ABSTRACT:
A wax transfer type thermal printer includes a thermal head having a plurality of heating elements arranged in the main scanning direction. Each heating element transfers an ink dot in a unit pixel. The length of each ink dot is changed in accordance with gradation levels. In printing characters, a unit pixel is used as one pixel. In printing a half-tone image, the heating elements are divided into plural groups each of which has N heating elements and records (N.times.M) unit pixels as one pixel, where M, N are integers of 2 or more.

REFERENCES:
patent: 4724446 (1988-02-01), Hirahara et al.
patent: 5099259 (1992-03-01), Hirahara et al.

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