Incremental printing of symbolic information – Thermal marking apparatus or processes – Multicolor
Patent
1996-12-26
1999-04-06
Le, N.
Incremental printing of symbolic information
Thermal marking apparatus or processes
Multicolor
40012003, B41J 232
Patent
active
058925309
ABSTRACT:
A color thermosensitive recording sheet includes a support and at least yellow, magenta and cyan thermosensitive coloring layers formed thereon. A color thermal printer has conveyor rollers for moving the recording sheet relative to a thermal head. The thermal head initially heats the recording sheet for recording on the yellow coloring layer. A yellow fixing lamp applies near ultraviolet rays to the recording sheet to fix the yellow coloring layer optically. The thermal head heats the recording sheet for recording on the magenta coloring layer. A magenta fixing lamp applies ultraviolet rays to the recording sheet to fix the magenta coloring layer optically. An irradiance sensor detects irradiance of the magenta fixing lamp during the magenta fixation. A refixing check circuit obtains a minimal irradiance of the detected irradiance, compares the minimal irradiance with a limit irradiance, and outputs a refixing command if the minimal irradiance is equal to or smaller than the limit irradiance. A driver turns on the magenta fixing lamp in response to the refixing command. A conveying speed determiner determines a speed of the conveyor rollers for the refixation according to the minimal irradiance. The conveyor rollers are operated at the determined speed while the magenta fixing lamp is turned on. The magenta fixing lamp refixes the recording sheet optically. Finally the thermal head heats the recording sheet for recording on the cyan coloring layer.
REFERENCES:
patent: 5216438 (1993-06-01), Nakao et al.
patent: 5463417 (1995-10-01), Yamakawa
patent: 5486856 (1996-01-01), Katsuma et al.
patent: 5629729 (1997-05-01), Fujishiro
Katsuma Nobuo
Ueda Satoshi
Fuji Photo Film Co. , Ltd.
Le N.
Vo Anh T. N.
LandOfFree
Color thermal printer and printing method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color thermal printer and printing method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color thermal printer and printing method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1375669