-
公开(公告)号：US09665052B2
公开(公告)日：2017-05-30
申请号：US14521531
申请日：2014-10-23
Applicant: RICOH COMPANY, LTD.
Inventor： Koji Masuda , Hidemasa Suzuki
CPC classification number: G03G15/556 , G01B11/14 , G01N21/55 , G01N2201/062 , G01N2201/0696 , G03G15/0131 , G03G15/04 , G03G15/161 , G03G15/5058 , G03G2215/00059 , G03G2215/00616 , G03G2215/0161
Abstract: A reflective optical sensor includes at least three light-emitting elements; a lighting optical system that guides light emitted from the light-emitting elements to a toner pattern; and at least three light-receiving elements that receive the beams of light reflected by the toner pattern. The lighting optical system has a lateral magnification m that satisfies m≦P/S, where S is the size of the light-emitting elements and P is the arrangement pitch of the light-emitting elements.
-
Patent Agency Ranking
公开(公告)号：US09459567B2
公开(公告)日：2016-10-04
申请号：US14477168
申请日：2014-09-04
Applicant: RICOH COMPANY, LTD.
Inventor： Susumu Momma , Koji Masuda , Hidemasa Suzuki
CPC classification number: G03G15/2032 , G03G21/1685
Abstract: A fixing device that fixes a toner image carried on a transfer sheet onto the transfer sheet includes a fixing belt that relatively moves, with its surface being in contact with the toner image during the fixing operation, with respect to the transfer sheet, surface information detecting devices that determine surface information of the fixing belt, a surface condition changing roller that is arranged so as to be capable of coming into contact with and separating from the fixing belt and abrades the surface of the fixing belt in contact with the fixing belt, and a surface condition changing controller that controls the contact and separation of the surface condition changing roller with and from the fixing belt based on detection results obtained by the surface information detecting devices.
Abstract translation: 将承载在转印片上的调色剂图像固定在转印纸上的定影装置包括相对于转印纸张相对移动的定影带，其表面与定影操作期间的调色剂图像接触，表面信息检测 确定定影带的表面信息的装置，布置成能够与定影带接触并与定影带分离并磨损与定影带接触的定影带的表面的表面状态改变辊，以及 表面状态变更控制部，根据表面信息检测装置得到的检测结果，控制表面状态变更辊与定影带的接触分离。
-
公开(公告)号：US10739446B2
公开(公告)日：2020-08-11
申请号：US15408936
申请日：2017-01-18
Applicant: Ricoh Company, Ltd.
Inventor： Masahiro Itoh , Shu Takahashi , Yasuhiro Nihei , Takeshi Ogawa , Hiroaki Tanaka , Koji Masuda
IPC: G01S7/48 , G01S7/4865 , G01S17/10 , G01S17/89
Abstract: A range-finding device including a light-emitting device, an imaging unit, a calculator, and a controller. The image unit receives pulsed light reflected from an object within the space for a plurality of time periods in a time-division manner, electrically converts the pulsed light into an electrical signal, and accumulates electric charge of the electrical signal for each of the plurality of time periods. The calculator calculates a time difference between emission of the pulsed light and reception of the pulsed light reflected from the object based on the electric charge accumulated for each of the plurality of time periods and determine a distance to the object based on the time difference. The controller controls the timing of reception of the pulsed light for each of the plurality of time periods at the imaging unit according to an intensity of the pulsed light reflected from the object.
-
公开(公告)号：US10596964B2
公开(公告)日：2020-03-24
申请号：US15403594
申请日：2017-01-11
Applicant: Ricoh Company, Ltd.
Inventor： Yasuhiro Nihei , Koji Masuda , Takeshi Ogawa , Hiroaki Tanaka , Shu Takahashi , Masahiro Itoh , Yoichi Ichikawa
IPC: G01S17/00 , B60Q11/00 , H05B45/00 , H05B47/105 , G01S7/481 , G01S7/484 , G01S7/497 , G01S17/10 , G01S17/931 , G01S17/89
Abstract: A distance measurement device includes a projection optical system, a light-receiving system to receive light projected from projection optical system and reflected by an object; and a correction system to correct a difference in timing of light emission between the plurality of light sources. The projection optical system includes a plurality of light sources and a plurality of drive circuits to drive the plurality of light sources.
-
公开(公告)号：US10549691B2
公开(公告)日：2020-02-04
申请号：US15403594
申请日：2017-01-11
Applicant: Ricoh Company, Ltd.
Inventor： Yasuhiro Nihei , Koji Masuda , Takeshi Ogawa , Hiroaki Tanaka , Shu Takahashi , Masahiro Itoh , Yoichi Ichikawa
Abstract: A distance measurement device includes a projection optical system, a light-receiving system to receive light projected from projection optical system and reflected by an object; and a correction system to correct a difference in timing of light emission between the plurality of light sources. The projection optical system includes a plurality of light sources and a plurality of drive circuits to drive the plurality of light sources.
-
公开(公告)号：US10481263B2
公开(公告)日：2019-11-19
申请号：US15447973
申请日：2017-03-02
Applicant: Ricoh Company, Ltd.
Inventor： Shu Takahashi , Yasuhiro Nihei , Masahiro Itoh , Takeshi Ogawa , Hiroaki Tanaka , Yoichi Ichikawa , Koji Masuda
Abstract: A range finding apparatus includes a light emission unit including a light source and a light source driver, a light detection unit, and circuitry. The light source driver supplies a plurality of drive pulses having different pulse width at different time periods. The light detection unit receives the light emitted from the light emission unit and then reflected from an object. The circuitry calculates a range to the object based on a time difference between one time point when a pulse light is emitted from the light source and another time point when light reflected from the object is received by the light detection unit. One of the drive pulses set with a smaller pulse width is set with a sine wave pattern, and another one of the drive pulses set with a greater pulse width is set with a rectangular wave pattern.
-
-
-
-
-
Search Results
6
records
(took 0.013 seconds)
