Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1997-06-20
1999-01-26
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347221, B41J 2435, B41J 2315, G01D 1524, H01S 131
Patent
active
058643575
ABSTRACT:
The present invention provides a novel thermal printing recording apparatus which can perform printing at a resolution as high as not less than 600 DPI and a higher rate than the prior art. The thermal printing recording apparatus of the present invention comprises a light-emitting device which emits light according to image data, and a light-receiving heating element which selectively generates heat on the area irradiated with light from the light-emitting device. The light-receiving heating element comprises a photoconductive layer which reduces its resistivity on the irradiated area, a heating layer laminated thereon, and a pair of electrically conductive layers arranged interposing the photoconductive layer and the heating layer in such a manner that an electric current is passed to the heating layer through the photoconductive layer on the area whose resistivity has been reduced to cause the heating layer to generate heat, one of the two electrically conductive layers on the photoconductive layer side being a transparent layer and transmitting light from the light-emitting device. In this arrangement, the light-receiving heating element is irradiated with light from the light-emitting device on the light transmitting electrically conductive layer according to image data so that it can convert the optical image to a heat image to perform printing.
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"High Resolution Heat Transfer Thermal Printing Head", Nobuhiro Inoue, Information and Communication System Laboratory, Toshiba Corporation, Hino, Tokyo, Japan, 1988, pp. 250-253.
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"Characteristics of Thermal Transfer Printing by Laser Heating-the study of color printing-", Mitsuru Irie.sup.1), et al..sup.2), Graduate School of Science and Technology, Chiba University.sup.1), Department of Image Science, Faculty of Engineering, China University.sup.2), 1991, pp. 237-240.
Anderson L.
Fuji 'Xerox Co., Ltd.
Le N.
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