发明申请
US20020159100A1 Image reading apparatus and image forming apparatus equipped therewith
有权
图像读取装置和配备有其的图像形成装置
- 专利标题: Image reading apparatus and image forming apparatus equipped therewith
- 专利标题(中): 图像读取装置和配备有其的图像形成装置
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申请号: US10122656申请日: 2002-04-15
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公开(公告)号: US20020159100A1公开(公告)日: 2002-10-31
- 发明人: Ryuji Okutomi , Hiroyuki Futami , Jun Nakagawa , Tadayuki Ueda , Eiji Nishikawa
- 申请人: Konica Corporation
- 申请人地址: JP Tokyo
- 专利权人: Konica Corporation
- 当前专利权人: Konica Corporation
- 当前专利权人地址: JP Tokyo
- 优先权: JP131657/2001 20010427
- 主分类号: H04N001/40
- IPC分类号: H04N001/40 ; H04N001/04
摘要:
In a document reading apparatus having a scanning exposure reading system by which a document placed on a platen is scanning exposed by an optical system and a document image is read out, or a document reading system by which a moving document is read out by an optical system, at the first collection position and the second collection position which are different in the sub-scanning direction of the scanning expose on a reference density plate, the first shading correction data and the second shading correction data are respectively read in the main scanning direction, and the shading position is corrected on the basis of the read first and second shading correction data.