发明授权
US08922831B2 Image capturing device, color measuring device, color measuring system, and image forming apparatus
有权
图像捕获装置,色彩测量装置,彩色测量系统和图像形成装置
- 专利标题: Image capturing device, color measuring device, color measuring system, and image forming apparatus
- 专利标题(中): 图像捕获装置,色彩测量装置,彩色测量系统和图像形成装置
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申请号: US13852371申请日: 2013-03-28
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公开(公告)号: US08922831B2公开(公告)日: 2014-12-30
- 发明人: Hideaki Suzuki , Kazushi Takei , Satoshi Iwanami , Masahiro Shigemoto , Nobuyuki Satoh
- 申请人: Hideaki Suzuki , Kazushi Takei , Satoshi Iwanami , Masahiro Shigemoto , Nobuyuki Satoh
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Limited
- 当前专利权人: Ricoh Company, Limited
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2012-075018 20120328
- 主分类号: G06F15/00
- IPC分类号: G06F15/00 ; G06K1/00 ; G06K15/02 ; H04N1/409 ; H04N1/60
摘要:
An image capturing device includes an image capturing unit, a moving unit, a detector, and a determiner. The image capturing unit includes an optical transmission member; and a sensor capturing an image of the subject via the optical transmission member. The moving unit moves the image capturing unit in an optical axis direction of the sensor. The detector detects a contamination from first and second images. The first and second images are captured by the sensor when the image capturing unit is located at first and second positions in the optical axis direction, respectively. The second position is spaced away from the subject than the first position in the optical axis direction. The determiner determines that a contamination is deposited on the optical transmission member when a difference in the number of pixels in which a contamination is detected between the first and second images is less than a threshold.