发明授权
- 专利标题: Image reading device, image forming apparatus, and shading data processing method
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申请号: US15276892申请日: 2016-09-27
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公开(公告)号: US10063744B2公开(公告)日: 2018-08-28
- 发明人: Susumu Miyazaki , Tomoyuki Yoshida , Tetsuo Inui , Shigefumi Imoto
- 申请人: Susumu Miyazaki , Tomoyuki Yoshida , Tetsuo Inui , Shigefumi Imoto
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd
- 当前专利权人: Ricoh Company, Ltd
- 当前专利权人地址: JP Tokyo
- 代理机构: Harness, Dickey & Pierce, P.L.C.
- 优先权: JP2015-205713 20151019
- 主分类号: H04N1/60
- IPC分类号: H04N1/60 ; G03F3/08 ; H04N1/409 ; H02N1/12 ; H04N1/203 ; H04N1/031
摘要:
An image reading device includes a first unit to read one surface of a document in a first area facing a document path, a second unit disposed in the first area to read the other surface of the document, a first reference member facing the first unit at a first distance therefrom at a second position in a second area not facing the path, a second reference member facing the first unit at a second distance therefrom at a first position in the first area, a third reference member facing the second unit at the second distance therefrom, and a correction unit to correct, based on a difference between first data generated through reading of the first member by the first unit and second data generated through reading of the second member by the first unit, third data generated through reading of the third member by the second unit.