发明名称 |
Shading board for copying apparatus |
摘要 |
In an electrophotographic copying apparatus, reflected light from an original subject is directed to a light receiving means, such as a photoconductive drum, through a slit. The apparatus includes an optical device, for example a zoom lens, positioned between the original subject and the photoconductive drum for varying the size of the optical image being passed through the slit. A shading board fixed adjacent to the photoconductive drum extends along a longitudinal direction of the optical image.
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申请公布号 |
US5066987(A) |
申请公布日期 |
1991.11.19 |
申请号 |
US19890450468 |
申请日期 |
1989.12.14 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
MINEFUJI, NOBUTAKA;ARAI, YASUNORI |
分类号 |
G03B27/34;G03B27/50;G03G15/04;G03G15/041;G03G15/043 |
主分类号 |
G03B27/34 |
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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