Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1988-10-18
1990-07-31
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
250223R, G01J 132
Patent
active
049452223
ABSTRACT:
A light irradiation control device for use in an image recording apparatus is disclosed. In one embodiment, the image recording apparatus uses an intermediate sheet on which a mask image is formed at a laser printer. The mask image is introduced into the apparatus and is in surface contact with a photosensitive pressure sensitive recording medium. The light transmission factor of the intermediate sheet is detected by a detection means, and a signal indicative of the factor is sent to a control unit. The control unit control amount of light irradiation against the photosensitive pressure sensitive recording medium through the intermediate sheet. In another embodiment, a light transmitted through an original is directly applied onto the photosensitive pressure sensitive recording medium. The amount of light irradiated onto the original is controlled by detecting a thickness of the original and irradiating a controlled amount of light responsive to the detection.
REFERENCES:
patent: 3650624 (1972-03-01), Yamada
patent: 4206998 (1980-06-01), Tokuda
patent: 4270861 (1981-06-01), Beckman
Akao Michitoshi
Sakai Toshio
Allen Stephone B.
Brother Kogyo Kabushiki Kaisha
Nelms David C.
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