Facsimile and static presentation processing – Facsimile – Picture signal generator
Patent
1992-04-03
1994-07-19
Ip, Paul
Facsimile and static presentation processing
Facsimile
Picture signal generator
358483, 358298, 358461, 355229, G03G 1500
Patent
active
053314336
ABSTRACT:
An image reader that uses a fluorescent lamp as a light source and that corrects colors in accordance with quantities of light reflected from a reference white plate prior to scanning a document. A relationship between a tube wall temperature of the fluorescent lamp and a quantity of light which have been measured in advance is stored in a RAM, and an AGC circuit for controlling gain of a color sensor in accordance with the temperature detected by a temperature sensor is provided, or the tube current of the fluorescent lamp in accordance with the temperature detected by the temperature sensor is controlled so that the quantity of light of the fluorescent lamp can be maintained constant.
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Fuji 'Xerox Co., Ltd.
Ip Paul
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