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US 4,542,388 AGranted
Light or heat output stabilizing system
AssigneeFuji Photo Film Co., Ltd.
InventorShigeo Harada
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AssigneeFuji Photo Film Co., Ltd.
InventorShigeo Harada
Estimating the term…
In an apparatus for recording an image by scanning a recording material with a light beam or a heat beam through rotation of a rotating body having at least one light source or heat source, the output of the light or heat source is controlled to obtain a sharp image free of scanning nonuniformity. A non-recording period on the recording material is detected by use of a combination of a light projector and a light receiver positioned in the rotating body with a light reflector secured near the rotating body, or a combination of a light receiver positioned in the rotating body with a light projector secured near the rotating body, or a combination of a magnetic sensor positioned in the rotating body with a magnet secured near the rotating body. The output of the light or heat source is stabilized by a stabilizing circuit within the detected non-recording period.
A light or heat output stabilizing system for stabilizing the output of a light source for exposure or a heat source for exposure in a recording apparatus for recording an image in a light-sensitive material or a heat-sensitive material by scanning the light-sensitive material with a light beam or by scanning the heat-sensitive material with a heat beam through the rotation of a rotating body provided with at least one light source for exposure or at least one heat source for exposure, wherein the improvement comprises the provision of a means for detecting the non-recording period for which recording in said light-sensitive material by the light beam emitted from said light source for exposure or recording in said heat-sensitive material by the heat beam emitted from said heat source for exposure is not conducted, and a stabilizing circuit for stabilizing the output of said light source for exposure or said heat source for exposure within said non-recording period detected by said detecting means.
Dependencies are inferred from the claim text.