Color thermal printer having a light source
AssigneeFuji Photo Film Co., Ltd.
InventorsTomoko Taki, Hideyuki Kokubo
Life of this patent
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Abstract
A flat-type fluorescent lamp is used as a light source of a color thermal printer. The flat-type fluorescent lamp has a yellow luminescent surface for emitting yellow fixing rays, and a magenta luminescent surface for emitting magenta fixing rays. The respective luminescent surfaces are disposed back to back and are selectively activated by a lamp driving circuit. The flat-type fluorescent lamp is rotatable between a first position where the yellow luminescent surface confronts a recording surface of a color thermosensitive recording paper, and a second position where the magenta luminescent surface confront the recording surface of the recording paper.
Claims12
A color thermal printer using a color thermosensitive recording paper including at least first and second thermosensitive coloring layers stacked on a base in order and coloring in different colors, in which said first and second thermosensitive coloring layers are optically fixed after thermal recording by applying rays of a first wavelength band and a second wavelength band respectively, said color thermal printer comprising:
- a flat light source for optically fixing said first and second thermosensitive coloring layers, said flat light source having first and second luminescent surfaces radiating the rays of the first wavelength band and the second wavelength band respectively;
- a rotating mechanism for rotating said flat light source, said rotating mechanism selectively confronting one of said first and second luminescent surfaces with said color thermosensitive recording paper;
- and
- a driving circuit for selectively activating said first and second luminescent surfaces to emit the rays in order to emit the rays of the first wavelength band or the second wavelength band to said color thermosensitive recording paper.
Dependencies are inferred from the claim text.