Thermal copying apparatus

Details Thermal copying apparatus Thermal copying apparatus

1987-06-10

1989-06-20

LaRoche, Eugene R.

Radiant energy

With infrared or thermal pattern recording

Thermal copying of documents

2503161, 250319, 346 76PH, G03C 516

Patent

active

048411540

ABSTRACT:
A thermal copying apparatus disclosed holds an original and a recording sheet in intimate contact with each other between a holding member and a transparent member and operates a light source to irradiate the original through the transparent member thereby to effect a copying operation thermosensitively. The apparatus further has at least one of a heater for heating the transparent member at a portion where the original and the recording sheet are fed into prior to the copying operation, a cooling fan for generating a cooling gas flowing perpendicularly to the conveying direction of the original and the recording sheet and reversing its flowing direction at predetermined cycles, a sensor for detecting temperature of the transparent member, and a circuit for controlling energy of the light source in accordance with the detected temperature, thus being capable of always obtaining uniform copying density.

REFERENCES:
patent: 3195455 (1965-07-01), Newman
patent: 3224355 (1965-12-01), Thomiszer
patent: 3379526 (1968-04-01), Limberger et al.
patent: 3414724 (1968-12-01), Kuarnegard
patent: 3598993 (1971-08-01), Kaufer
patent: 3628860 (1971-12-01), Ogawa
patent: 4034189 (1977-07-01), Sakamaki et al.
patent: 4131796 (1978-12-01), Kuarnegard
patent: 4161644 (1979-07-01), Yanagawa et al.
patent: 4438321 (1984-03-01), Moraw
patent: 4628183 (1986-12-01), Satomura

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