Moving-member detecting device and image forming apparatus
First Claim
1. A moving-body detecting device comprising:
- an image acquiring device including,a single light source configured to emit light beams to a first detection position and a second detection position, the second detection position being apart from the first detection position in a moving direction of a moving-body, andan optical image synthesizer opposite the first detection position and the second detection position, the optical image synthesizer configured to split the light beam emitted from the single light source into two beams to be emitted to two areas, respectively; and
an area sensor arranged to capture images of the first detection position and the second detection position, whereina moving state of the moving-body is detected from the captured images.
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Abstract
A moving-member detecting device includes an image acquiring unit and a speed calculating unit. The image acquiring unit includes a light source configured to emit a light beam to a detecting position of a moving member; an area sensor configured to acquire image data of a one- or two-dimensional image; and an area-sensor control unit configured to acquire the image data. The image acquiring unit is configured to acquire pieces of image data of the moving member at first and second positions, respectively, in a moving direction of the moving member so as to acquire the piece of position image data for the second position when the moving member is at the second position after acquiring the piece of image data for the first position. The speed calculating unit is configured to calculate a moving speed of the moving member from the pieces of image data.
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Citations
10 Claims
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1. A moving-body detecting device comprising:
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an image acquiring device including, a single light source configured to emit light beams to a first detection position and a second detection position, the second detection position being apart from the first detection position in a moving direction of a moving-body, and an optical image synthesizer opposite the first detection position and the second detection position, the optical image synthesizer configured to split the light beam emitted from the single light source into two beams to be emitted to two areas, respectively; and an area sensor arranged to capture images of the first detection position and the second detection position, wherein a moving state of the moving-body is detected from the captured images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification
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- Resources
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Current AssigneeRicoh Company Limited
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Original AssigneeRicoh Company Limited
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InventorsKudo, Koichi, Masuda, Koji, Funato, Hiroyoshi, Ueda, Takeshi, Nihei, Yasuhiro, Takaura, Atsushi
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Primary Examiner(s)Ratcliffe, Luke D
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Application NumberUS13/957,926Publication NumberTime in Patent Office1,761 DaysField of Search356 28- 285US Class CurrentCPC Class CodesG03G 15/5054 by measuring the characteri...G03G 2215/0129 horizontal medium transport...G03G 2215/0141 the linear arrangement bein...
