发明名称 |
Exposure apparatus for electronic duplicator |
摘要 |
An exposure apparatus for an electronic duplicator including a first light-receiving element for receiving light reflected by a reference reflector plate or by an original and a second light-receiving element for receiving light reflected from an image focusing point of a photosensitive medium. The doses of light received by these light-receiving elements are converted to voltage signals for comparison with a reference voltage level in a comparator. The output of the comparator is coupled through a control signal generator and a trigger pulse generator to a lamp driver for controlling the document illuminating lamp light intensity and is also coupled through the control signal generator and a transformer for controlling the bias voltage applied to a developing device.
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申请公布号 |
US4390266(A) |
申请公布日期 |
1983.06.28 |
申请号 |
US19810232219 |
申请日期 |
1981.02.06 |
申请人 |
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA |
发明人 |
UCHIDA, KOHACHI |
分类号 |
G03G15/04;G03B27/72;G03G15/043;G03G21/00;(IPC1-7):G03G15/04 |
主分类号 |
G03G15/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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