Thermal recording apparatus which can draw black borders

Details Thermal recording apparatus which can draw black borders Thermal recording apparatus which can draw black borders

1993-10-13

1996-09-17

Reinhart, Mark J.

Recorders

Markers and/or driving means therefor

Printing, dotting, or punching marker

347187, B41J 238, B41J 245

Patent

active

055573037

ABSTRACT:
In a thermal recording apparatus using a thermo-sensitive recording medium, a semiconductor laser outputs a laser beam modulated according to a gradation signal of an image to be recorded for a first time interval required to scan an image region of the recording medium, and an acousto-optic modulator modulates a laser beam generated by a gas laser to supply the image region with heat energy less than a coloring energy of the recording medium for the first time interval, and to supply a region other than the image region with a high energy exceeding the coloring energy for a time interval required to scan the other region, to draw black borders surrounding the image recorded on the recording medium.

REFERENCES:
patent: 4531138 (1985-07-01), Endo et al.

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