Patents by Inventor Satoshi Narai

Satoshi Narai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190047809
    Abstract: A sheet conveying device includes a separator to separate a sheet from sheets. The separator includes a separation conveyor; a separation resistance member to press against the separation conveyor via the sheet; a resistance-member holder; a biasing member to contact and bias the resistance-member holder to press the separation resistance member toward the separation conveyor, the resistance-member holder to rotate about a resistance-member rotary shaft to separate from the biasing member in detaching from an apparatus body; and a biasing-member holder configured to rotate about a biasing-member rotary shaft to more incline the biasing member in a state, in which the biasing member is spaced apart from the resistance-member holder, in a moving direction of the resistance-member holder to detach from the apparatus body than the biasing member in a biasing state in which the biasing member biases the resistance-member holder in contact with the resistance-member holder.
    Type: Application
    Filed: August 10, 2018
    Publication date: February 14, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Munekazu HIRATA, Satoshi NARAI, Yasunobu YOUDA, Tatsuaki NAGANO, Takayuki ANDOH, Daisuke IMAKI, Tomoya FUJII, Toshiyuki HORIKAWA, Koji HATAYAMA, Kaoru TADA, Naoto KITAMURA
  • Publication number: 20190052767
    Abstract: A reading device includes a feeder, a reading unit, and circuitry. The feeder feeds a document. The reading unit reads the document fed by the feeder. The circuitry acquires image data of the document read by the reading unit, in a mode selected in accordance with a predetermined selection condition from a plurality of modes that includes a first mode for acquiring image data including a document area of the document and an outside area other than the document area and a second mode for acquiring image data of an area not including the outside area.
    Type: Application
    Filed: August 6, 2018
    Publication date: February 14, 2019
    Inventors: Tatsuaki NAGANO, Koji HATAYAMA, Satoshi NARAI, Daisuke IMAKI, Toshiyuki HORIKAWA, Kaoru TADA, Takayuki ANDOH, Yohei OSANAI, Genta HAGIWARA, Yasunobu YOUDA
  • Patent number: 10200564
    Abstract: An image reading device includes: a reading unit; a first detecting unit that detects a position of the reading unit in the sub-scanning direction; a second detecting unit that detects a position of the reading unit in the sub-scanning direction; and a calculating unit that calculates a skew quantity and a skew direction of the reading unit, based on a difference, introduced by the skew, between a travel distance by which the reading unit has travelled from a measurement reference position located on an upstream side of the first detecting unit and the second detecting unit in a moving direction to a point where the reading unit is detected by the first detecting unit, and a travel distance by which the reading unit has travelled from the measurement reference position to a point where the reading unit is detected by the second detecting unit.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: February 5, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuki Fujii, Yasunobu Youda, Yohei Osanai, Tatsuaki Nagano, Satoshi Narai, Toshiyuki Horikawa, Takuji Kawai, Daisuke Imaki, Takayuki Andoh, Susumu Miyazaki, Tetsuo Inui, Koichi Ono, Takeshi Shikama, Shingo Shiramura, Hideo Tanaka
  • Patent number: 10108128
    Abstract: An automatic document feeder, which is included in an image reading device and an image forming apparatus, includes first and second document trays, a document output tray, a document conveying passage, multiple document conveying bodies, a drive source, a detector, and a controller. The multiple document conveying bodies include a document holding and conveying body to convey and hold the original document sheet on the second document tray. On detection of the original document sheet on the second document tray while conveying a different original document sheet from the first document tray, the controller stops feeding the different original document sheet, causes the different original document sheet downstream from the document holding and conveying body in a document conveying direction to be conveyed to the document output tray, and stops the drive source after the different original document has been conveyed to the document output tray.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: October 23, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuaki Nagano, Yasunobu Youda, Satoshi Narai, Yohei Osanai, Toshiyuki Horikawa, Masatoshi Ishida, Takuji Kawai
  • Publication number: 20180295247
    Abstract: An image-reading unit includes an original document conveyor that includes a first original document tray to hold an original document to be read, a first original document feeding port to feed the original document placed on the first original document tray, and an original document conveying path to convey the original document from the first original document feeding port to an original document discharging port. The original document conveyor further includes an openable second original document tray attached near an intermediate portion of the original document conveying path to hold an original document when opened, and a second original document feeding port to feed the original document on the second original document tray. The image-reading unit further includes an image reader to read an image of the original document being conveyed along the original document conveying path.
    Type: Application
    Filed: June 14, 2018
    Publication date: October 11, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Takuji KAWAI, Yasunobu YOUDA, Yohei OSANAI, Tatsuaki NAGANO, Satoshi NARAI, Toshiyuki HORIKAWA, Daisuke IMAKI, Takayuki ANDOH, Susumu MIYAZAKI, Tetsuo INUI, Yuki FUJII, Koichi ONO, Takeshi SHIKAMA, Shingo SHIRAMURA, Hideo TANAKA
  • Publication number: 20180270375
    Abstract: A rotation drive device includes a driven rotation member, a driving rotation member, a rotation relay member, a shaft, and a holder. The rotation relay member transmits only a unidirectional rotational driving force from the driving rotation member to the driven rotation member. The rotation relay member includes a housing and a cylindrical one-way clutch. A contact portion between the driving rotation member and the shaft is configured to rotate the driving rotation member and the shaft to transmit the driving force to an inner peripheral side of the cylindrical one-way clutch via the shaft. The driving rotation member includes a boss projected toward the holder and rotatably held in the holder. A portion of the shaft to support the driving rotation member and an inner wall surface of a through hole of the driving rotation member are shaped to rotate the shaft and the driving rotation member. together.
    Type: Application
    Filed: March 13, 2018
    Publication date: September 20, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: DAISUKE IMAKI, Yohei OSANAI, Genta HAGIWARA, Masatoshi ISHIDA, Tatsuaki NAGANO, Satoshi NARAI, Toshiyuki HORIKAWA, Yasunobu YOUDA, Takayuki ANDOH, Kaoru TADA
  • Patent number: 10044898
    Abstract: An image reading device, which is included in an image forming apparatus, includes a first transparent body, a second transparent body, a holding body, and a reading body. The second transparent body is disposed separated from and inclined at a predetermined angle to the first transparent body. The holding body holds the first and second transparent bodies. The reading body moves in a sub-scanning direction along the first and second transparent bodies. The holding body includes a flat face and a frame-shaped face. The flat face is contiguous to the first transparent body on a same plane and smoothly connected with the second transparent body. The frame-shaped face projects outwardly beyond the second transparent body facing the reading body. The reading body moves and contacts the first transparent body and the holding body, and moves with a gap relative to the second transparent body.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: August 7, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Yohei Osanai, Yasunobu Youda, Masatoshi Ishida, Tatsuaki Nagano, Daisuke Imaki, Satoshi Narai, Toshiyuki Horikawa, Takuji Kawai
  • Patent number: 10033899
    Abstract: A lighting device includes a light source, a board, and a light guide. The light source emits light. The board mounts the light source on a mount surface perpendicular to a light emission surface of the light source. The light guide has an incident surface which the light emitted from the light source enters. The incident surface is opposed to the light emission surface. The light guide extends from the incident surface in a direction of the emitted light and is bent toward an irradiated surface of an irradiation target on a way of the light guide. The board is disposed such that an opposite surface of the board opposite the mount surface is opposed to the irradiated surface of the irradiation target.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: July 24, 2018
    Assignee: Ricoh Company LTD.
    Inventors: Masatoshi Ishida, Yoshiaki Nagao, Satoshi Narai, Atsushi Sugai, Masafumi Kishi, Makoto Noda
  • Patent number: 10027831
    Abstract: An image-reading unit includes an original document conveyor that includes a first original document tray to hold an original document to be read, a first original document feeding port to feed the original document placed on the first original document tray, and an original document conveying path to convey the original document from the first original document feeding port to an original document discharging port. The original document conveyor further includes an openable second original document tray attached near an intermediate portion of the original document conveying path to hold an original document when opened, and a second original document feeding port to feed the original document on the second original document tray. The image-reading unit further includes an image reader to read an image of the original document being conveyed along the original document conveying path.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: July 17, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuji Kawai, Yasunobu Youda, Yohei Osanai, Tatsuaki Nagano, Satoshi Narai, Toshiyuki Horikawa, Daisuke Imaki, Takayuki Andoh, Susumu Miyazaki, Tetsuo Inui, Yuki Fujii, Koichi Ono, Takeshi Shikama, Shingo Shiramura, Hideo Tanaka
  • Publication number: 20170351209
    Abstract: An automatic document feeder, which is included in an image reading device and an image forming apparatus, includes first and second document trays, a document output tray, a document conveying passage, multiple document conveying bodies, a drive source, a detector, and a controller. The multiple document conveying bodies include a document holding and conveying body to convey and hold the original document sheet on the second document tray. On detection of the original document sheet on the second document tray while conveying a different original document sheet from the first document tray, the controller stops feeding the different original document sheet, causes the different original document sheet downstream from the document holding and conveying body in a document conveying direction to be conveyed to the document output tray, and stops the drive source after the different original document has been conveyed to the document output tray.
    Type: Application
    Filed: April 17, 2017
    Publication date: December 7, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Tatsuaki NAGANO, Yasunobu Youda, Satoshi Narai, Yobei Osanai, Toshiyuki Horikawa, Masatoshi Ishida, Takuji Kawai
  • Publication number: 20170331970
    Abstract: An image reading device, which is included in an image forming apparatus, includes a first transparent body, a second transparent body, a holding body, and a reading body. The second transparent body is disposed separated from and inclined at a predetermined angle to the first transparent body. The holding body holds the first and second transparent bodies. The reading body moves in a sub-scanning direction along the first and second transparent bodies. The holding body includes a flat face and a frame-shaped face. The flat face is contiguous to the first transparent body on a same plane and smoothly connected with the second transparent body. The frame-shaped face projects outwardly beyond the second transparent body facing the reading body. The reading body moves and contacts the first transparent body and the holding body, and moves with a gap relative to the second transparent body.
    Type: Application
    Filed: March 17, 2017
    Publication date: November 16, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Yohei OSANAI, Yasunobu YOUDA, Masatoshi ISHIDA, Tatsuaki NAGANO, Daisuke IMAKI, Satoshi NARAI, Toshiyuki HORIKAWA, Takuji KAWAI
  • Patent number: 9800748
    Abstract: An automatic document feeder that is included in an image reader of an image forming apparatus includes a sheet conveying roller, a document feeder cover, a projection piece, a motor, a driving side gear, and a driving force transmission device including an idler gear, a driving force release gear, a slide body, a first elastic body to bias the idler gear and the driving force release gear to be separated, a second elastic body to bias the driving force release gear and the slide body to be separated, and a drive shaft. The driving force transmission device meshes the driving and driven side meshing portions together with a biasing force applied by the second elastic body when the document feeder cover is closed, and releases the driving and driven side meshing portions with a biasing force applied by the first elastic body when the document feeder cover is opened.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: October 24, 2017
    Assignee: RICOH COMPANY LTD.
    Inventors: Toshiyuki Horikawa, Yasunobu Youda, Yohei Osanai, Tatsuaki Nagano, Satoshi Narai, Takuji Kawai, Daisuke Imaki, Takayuki Andoh, Susumu Miyazaki, Yuki Fujii, Koichi Ono, Takeshi Shikama, Hiroaki Ikeda, Shingo Shiramura, Hideo Tanaka, Tetsuo Inui
  • Publication number: 20170208208
    Abstract: An image reading device includes: a reading unit; a first detecting unit that detects a position of the reading unit in the sub-scanning direction; a second detecting unit that detects a position of the reading unit in the sub-scanning direction; and a calculating unit that calculates a skew quantity and a skew direction of the reading unit, based on a difference, introduced by the skew, between a travel distance by which the reading unit has travelled from a measurement reference position located on an upstream side of the first detecting unit and the second detecting unit in a moving direction to a point where the reading unit is detected by the first detecting unit, and a travel distance by which the reading unit has travelled from the measurement reference position to a point where the reading unit is detected by the second detecting unit.
    Type: Application
    Filed: January 4, 2017
    Publication date: July 20, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuki FUJII, Yasunobu YOUDA, Yohei OSANAI, Tatsuaki NAGANO, Satoshi NARAI, Toshiyuki HORIKAWA, Takuji KAWAI, Daisuke IMAKI, Takayuki ANDOH, Susumu MIYAZAKI, Tetsuo INUI, Koichi ONO, Takeshi SHIKAMA, Shingo SHIRAMURA, Hideo TANAKA
  • Patent number: 9686422
    Abstract: An image scanner includes a stationary original plate on which a stationary original is placed and a moving original plate, over which a moving original is conveyed, aligned with the stationary original plate in a sub-scanning direction and tilted relative to the stationary original plate by a given angle. A reader is movable in the sub-scanning direction between a stationary original reading span disposed opposite the stationary original via the stationary original plate to read an image on the stationary original and a moving original reading position disposed opposite the moving original via the moving original plate to read an image on the moving original. The reader pressingly contacts the stationary original plate and the moving original plate as the reader moves in the sub-scanning direction.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: June 20, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Satoshi Narai, Yasunobu Youda, Taku Kudoh, Takayuki Andoh, Koji Hatayama, Yohei Osanai
  • Publication number: 20170142271
    Abstract: An image-reading unit includes an original document conveyor that includes a first original document tray to hold an original document to be read, a first original document feeding port to feed the original document placed on the first original document tray, and an original document conveying path to convey the original document from the first original document feeding port to an original document discharging port. The original document conveyor further includes an openable second original document tray attached near an intermediate portion of the original document conveying path to hold an original document when opened, and a second original document feeding port to feed the original document on the second original document tray. The image-reading unit further includes an image reader to read an image of the original document being conveyed along the original document conveying path.
    Type: Application
    Filed: November 10, 2016
    Publication date: May 18, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Takuji KAWAI, Yasunobu YOUDA, Yohei OSANAI, Tatsuaki NAGANO, Satoshi NARAI, Toshiyuki HORIKAWA, Daisuke IMAKI, Takayuki ANDOH, Susumu MIYAZAKI, Tetsuo INUI, Yuki FUJII, Koichi ONO, Takeshi SHIKAMA, Shingo SHIRAMURA, Hideo TANAKA
  • Publication number: 20170142265
    Abstract: An automatic document feeder that is included in an image reader of an image forming apparatus includes a sheet conveying roller, a document feeder cover, a projection piece, a motor, a driving side gear, and a driving force transmission device including an idler gear, a driving force release gear, a slide body, a first elastic body to bias the idler gear and the driving force release gear to be separated, a second elastic body to bias the driving force release gear and the slide body to be separated, and a drive shaft. The driving force transmission device meshes the driving and driven side meshing portions together with a biasing force applied by the second elastic body when the document feeder cover is closed, and releases the driving and driven side meshing portions with a biasing force applied by the first elastic body when the document feeder cover is opened.
    Type: Application
    Filed: November 10, 2016
    Publication date: May 18, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Toshiyuki HORIKAWA, Yasunobu YOUDA, Yohei OSANAI, Tatsuaki NAGANO, Satoshi NARAI, Takuji KAWAI, Daisuke IMAKI, Takayuki ANDOH, Susumu MIYAZAKI, Yuki FUJII, Koichi ONO, Takeshi SHIKAMA, Hiroaki IKEDA, Shingo SHIRAMURA, Hideo TANAKA, Tetsuo INUI
  • Publication number: 20170134598
    Abstract: An image forming apparatus includes a housing, an image forming device, an image reading device coupled with the housing via a first hinge and switchable between an overlapping state and a standing state, the image reading device configured to read an image on an original document, an automatic document feeder coupled with the image reading device via a second hinge and switchable between an overlapping state overlapping the image reading device and a standing state standing at the image reading device, the automatic document feeder configured to turn the original document and convey the original document to an image position, and an automatic coupling device to couple the automatic document feeder and the image reading device when the image reading device is opened while the automatic document feeder is overlapped on the image reading device.
    Type: Application
    Filed: November 9, 2016
    Publication date: May 11, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Tatsuaki NAGANO, Yasunobu YOUDA, Yohei OSANAI, Satoshi NARAI, Toshiyuki HORIKAWA, Takuji KAWAI, Daisuke IMAKI, Takayuki ANDOH, Susumu MIYAZAKI, Yuki FUJII, Koichi ONO, Takeshi SHIKAMA, Hiroaki IKEDA, Shingo SHIRAMURA, Hideo TANAKA, Tetsuo INUI
  • Publication number: 20160352955
    Abstract: A lighting device includes a light source, a board, and a light guide. The light source emits light. The board mounts the light source on a mount surface perpendicular to a light emission surface of the light source. The light guide has an incident surface which the light emitted from the light source enters. The incident surface is opposed to the light emission surface. The light guide extends from the incident surface in a direction of the emitted light and is bent toward an irradiated surface of an irradiation target on a way of the light guide. The board is disposed such that an opposite surface of the board opposite the mount surface is opposed to the irradiated surface of the irradiation target.
    Type: Application
    Filed: May 26, 2016
    Publication date: December 1, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Masatoshi ISHIDA, Yoshiaki NAGAO, Satoshi NARAI, Atsushi SUGAI, Masafumi KISHI, Makoto NODA
  • Publication number: 20150341515
    Abstract: An image scanner includes a primary conveyance roller to convey an original bearing an image in an original conveyance direction and an image reader disposed downstream from the primary conveyance roller in the original conveyance direction to read the image on the original. A moving original reading portion is disposed opposite the image reader. The image reader reads the image on the original through the moving original reading portion while the original moves over the moving original reading portion. A slope is disposed downstream from the moving original reading portion in the original conveyance direction. A spacer is interposed between the moving original reading portion and the slope in the original conveyance direction. A secondary conveyance roller has an original contact point to come into contact with the original. The original contact point is disposed opposite the spacer with an interval therebetween.
    Type: Application
    Filed: May 5, 2015
    Publication date: November 26, 2015
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasunobu YOUDA, Koji HATAYAMA, Tatsuaki NAGANO, Yohei OSANAI, Satoshi NARAI, Masafumi KISHI
  • Patent number: 8947751
    Abstract: An image reading device, which can be included in an image forming apparatus, includes an image pickup device, a transparent member, a traveling body, and a housing. The traveling body includes a light source to emit light and guides the light reflected from a surface of the document to the image pickup device while moving in a sub scanning direction along the document surface on the transparent member. The housing accommodates the image pickup device and the traveling body, and includes a base member including a rectangular bottom surface and a side surface, and a rail member including a rail surface and a first vertical surface. The rail member further includes a fixing part that is a surface to be fixed to the bottom surface of the base member and to extend from one end of the rail member in the sub scanning direction to the other end.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: February 3, 2015
    Assignee: Ricoh, Company Ltd.
    Inventors: Hiroshi Kusumoto, Tatsuaki Nagano, Yohei Osanai, Satoshi Narai, Masafumi Kishi, Toshiyuki Horikawa