发明名称 |
IMAGE READING APPARATUS WITH IMPROVED SHADING CORRECTION |
摘要 |
An image reading apparatus including a reading unit for reading image information upon movement and scanning, and an image forming unit for forming an image according to the image information from the reading unit, performs shading correction by utilizing a first white reference plate arranged along a direction perpendicular to the moving direction of the reading unit, and a second white reference plate arranged along the moving direction of the reading unit.
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申请公布号 |
US5099341(A) |
申请公布日期 |
1992.03.24 |
申请号 |
US19900545832 |
申请日期 |
1990.06.28 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
NOSAKI, TAKEFUMI;WATARI, MASAKO |
分类号 |
G03B27/50;G03B27/72;H04N1/04;H04N1/401 |
主分类号 |
G03B27/50 |
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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