Color thermal printer and optical fixing device therefor

Details Color thermal printer and optical fixing device therefor Color thermal printer and optical fixing device therefor

1996-06-11

1998-10-20

Le, N.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Pre or post image recording treatment

347175, B41J 2325, B41J 1100, G01D 1510

Patent

active

058253971

ABSTRACT:
An optical fixing device of a color thermal printer is used for fixing one of three color developing thermosensitive layers of a color thermosensitive recording medium. A pair of lamps are disposed side by side in a reflector of the optical fixing device, for projecting electromagnetic rays of a specific wavelength range toward the color thermosensitive recording medium. A plurality of apertures are formed through the reflector to provide a light path from each of the lamps to a single photosensor, wherein distances from the lamps to the photosensor are different from each other, and incident angles of the respective light paths onto the photosensor are determined such that the photosensor may receive an equal amount of electromagnetic rays from each of the lamps under the same conditions.

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