发明名称 |
Exposure control for a reader-printer projection apparatus |
摘要 |
An apparatus for projecting an original image onto a screen or a photosensitive drum includes a controller for correcting a light amount of an original illumination lamp along a scanning direction of the original image. A light amount correction value of the controller is changed so that exposure amount distribution on a projected surface becomes a predetermined value in accordance with a magnification detected from a projection lens.
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申请公布号 |
US5754276(A) |
申请公布日期 |
1998.05.19 |
申请号 |
US19940330552 |
申请日期 |
1994.10.28 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
FUJIBAYASHI, KAZUO;ISHIHARA, TAKAYUKI |
分类号 |
G03B27/32;G03B21/11;G03B27/34;G03B27/50;G03B27/72;G03G15/041;H04N5/74;(IPC1-7):G03B13/28 |
主分类号 |
G03B27/32 |
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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