Thermal recording apparatus

Details Thermal recording apparatus Thermal recording apparatus

1997-02-10

1999-10-26

Le, N.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Density control

B41J 232

Patent

active

059737131

ABSTRACT:
The improved thermal recording apparatus using a thermal head comprises an image processing unit which receives image data from an image supply source and which performs sharpness compensation and other image processing jobs on the received image data to construct data for the image to be recorded thermally and thermistor for measuring a temperature of the thermal head, wherein the image processing unit changes the coefficient of sharpness compensation in accordance with the temperature of the thermal head. The thermal recording apparatus can sufficiently reduce the drop in image sharpness due to an increased temperature of the thermal head and, optionally, the drop in image sharpness due either to an increased recording speed or to a reduced gamma value of the thermal material or to both factors to ensure the consistent production of unblurred, high-quality images.

REFERENCES:
patent: 4777583 (1988-10-01), Minami et al.
patent: 4916560 (1990-04-01), Kawaguchi
patent: 5204704 (1993-04-01), Genno et al.

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