Title:
An imaging device, a color measuring device, a Colorimetry system, and an image forming device
Document Type and Number:
Japanese Patent JP5942534
Kind Code:
B2
Abstract:
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.
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Inventors:
Hideaki Suzuki
Takeshi Kazushi
Satoshi Iwanami
Shigemoto Masahiro
Nobuyuki Sato
Takeshi Kazushi
Satoshi Iwanami
Shigemoto Masahiro
Nobuyuki Sato
Application Number:
JP2012075018A
Publication Date:
June 29, 2016
Filing Date:
March 28, 2012
Export Citation:
Assignee:
株式会社リコー
International Classes:
H04N5/225; G01J3/50; H04N5/232; H04N9/04
Domestic Patent References:
| JP201173273A | ||||
| JP2006181850A | ||||
| JP2003229996A |
Foreign References:
| US6832824 |
Attorney, Agent or Firm:
Hiroaki Sakai
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