Patents by Inventor Yoshinari Onuma
Yoshinari Onuma 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).
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Patent number: 11524513Abstract: A conveyance apparatus includes a plurality of conveyors and an image reader. The plurality of conveyors conveys a recording material. The image reader reads a pattern image on the recording material being conveyed. The conveyance apparatus further includes circuitry to control the image reader. The circuitry controls the image reader to read the pattern image on the recording material in a period including a timing at which a trailing edge of the recording material being conveyed by at least two of the plurality of conveyors exits an upstream conveyor among the at least two of the plurality of conveyors in a direction of conveyance of the recording material.Type: GrantFiled: July 14, 2020Date of Patent: December 13, 2022Assignee: Ricoh Company, Ltd.Inventors: Kohta Aoyagi, Hideyo Makino, Susumu Mikajiri, Kimiharu Yamazaki, Yoshinari Onuma, Satoshi Nakayama
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Patent number: 11153453Abstract: An image reading device includes a background member, an illumination unit opposed to the background member, and a reader. The illumination unit emits light to a recording medium having an image thereon. The reader receives a reflection from the recording medium to read the image. The background member has a facing surface that faces the recording medium. The facing surface includes a reference portion on a center portion in a width direction of the background member. The reference portion has a higher reflectance than an end portion of the facing surface in the width direction.Type: GrantFiled: October 29, 2020Date of Patent: October 19, 2021Assignee: Ricoh Company, Ltd.Inventors: Satoshi Nakayama, Susumu Mikajiri, Hideyo Makino, Yoshinari Onuma, Kimiharu Yamazaki, Kohta Aoyagi
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Publication number: 20210168253Abstract: An image reading device includes a background member, an illumination unit opposed to the background member, and a reader. The illumination unit emits light to a recording medium having an image thereon. The reader receives a reflection from the recording medium to read the image. The background member has a facing surface that faces the recording medium. The facing surface includes a reference portion on a center portion in a width direction of the background member. The reference portion has a higher reflectance than an end portion of the facing surface in the width direction.Type: ApplicationFiled: October 29, 2020Publication date: June 3, 2021Applicant: Ricoh Company, Ltd.Inventors: Satoshi Nakayama, Susumu Mikajiri, Hideyo Makino, Yoshinari Onuma, Kimiharu Yamazaki, Kohta Aoyagi
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Patent number: 10931844Abstract: An image inspection apparatus includes a first outputter that outputs color information of an image to be formed on a recording medium determined according to the type of recording medium; a reader provided facing one side of the recording medium and configured to output an image signal obtained by reading the recording medium; a second outputter that outputs an edge position of the recording medium and/or the image formed on the recording medium detected based on the image signal; first background members configured to face and contact another side of the recording medium and having different heights; second background members configured to face and contact the another side of the recording medium and having different colors; and an arranger that brings one member, selected according to the recording medium type from among the first and second background members, into contact with the another side of the recording medium.Type: GrantFiled: March 10, 2020Date of Patent: February 23, 2021Assignee: Ricoh Company, Ltd.Inventors: Kohta Aoyagi, Susumu Mikajiri, Kimiharu Yamazaki, Satoshi Nakayama, Hideyo Makino, Yoshinari Onuma
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Publication number: 20210016584Abstract: A conveyance apparatus includes a plurality of conveyors and an image reader. The plurality of conveyors conveys a recording material. The image reader reads a pattern image on the recording material being conveyed. The conveyance apparatus further includes circuitry to control the image reader. The circuitry controls the image reader to read the pattern image on the recording material in a period including a timing at which a trailing edge of the recording material being conveyed by at least two of the plurality of conveyors exits an upstream conveyor among the at least two of the plurality of conveyors in a direction of conveyance of the recording material.Type: ApplicationFiled: July 14, 2020Publication date: January 21, 2021Applicant: Ricoh Company, Ltd.Inventors: Kohta Aoyagi, Hideyo Makino, Susumu Mikajiri, Kimiharu Yamazaki, Yoshinari Onuma, Satoshi Nakayama
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Patent number: 10895831Abstract: A conveyance control device includes a fixing device including a first rotary body, a cooling device including a second rotary body, and control circuitry. The circuitry records a first drive amount for the second body when the first and second bodies are driven at a speed, a second drive amount for the second body when the second body is driven without the first body being driven, a third drive amount for the second body when the second body is driven to rotate faster than a rotating speed and the first body is driven, and a fourth drive amount for the second body when the second body is driven to rotate slower than the rotating speed and the first body is driven. The circuitry performs correction based on the drive amounts in such a manner that a drive amount of the second body becomes equivalent to the second drive amount.Type: GrantFiled: March 18, 2020Date of Patent: January 19, 2021Assignee: Ricoh Company, Ltd.Inventors: Kimiharu Yamazaki, Hideyo Makino, Susumu Mikajiri, Yoshinari Onuma, Satoshi Nakayama, Hiroki Yamamura, Kohta Aoyagi
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Publication number: 20200301326Abstract: A conveyance control device includes a fixing device including a first rotary body, a cooling device including a second rotary body, and control circuitry. The circuitry records a first drive amount for the second body when the first and second bodies are driven at a speed, a second drive amount for the second body when the second body is driven without the first body being driven, a third drive amount for the second body when the second body is driven to rotate faster than a rotating speed and the first body is driven, and a fourth drive amount for the second body when the second body is driven to rotate slower than the rotating speed and the first body is driven. The circuitry performs correction based on the drive amounts in such a manner that a drive amount of the second body becomes equivalent to the second drive amount.Type: ApplicationFiled: March 18, 2020Publication date: September 24, 2020Applicant: Ricoh Company, Ltd.Inventors: Kimiharu Yamazaki, Hideyo Makino, Susumu Mikajiri, Yoshinari Onuma, Satoshi Nakayama, Hiroki Yamamura, Kohta Aoyagi
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Publication number: 20200296243Abstract: An image inspection apparatus includes a first outputter that outputs color information of an image to be formed on a recording medium determined according to the type of recording medium; a reader provided facing one side of the recording medium and configured to output an image signal obtained by reading the recording medium; a second outputter that outputs an edge position of the recording medium and/or the image formed on the recording medium detected based on the image signal; first background members configured to face and contact another side of the recording medium and having different heights; second background members configured to face and contact the another side of the recording medium and having different colors; and an arranger that brings one member, selected according to the recording medium type from among the first and second background members, into contact with the another side of the recording medium.Type: ApplicationFiled: March 10, 2020Publication date: September 17, 2020Applicant: Ricoh Company, Ltd.Inventors: Kohta AOYAGI, Susumu MIKAJIRI, Kimiharu YAMAZAKI, Satoshi NAKAYAMA, Hideyo MAKINO, Yoshinari ONUMA
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Patent number: 8965257Abstract: An image forming apparatus includes an image carrier, a transfer unit to transfer the image onto a recording medium, a torque limit unit to transmit drive force to the transfer unit at a torque less than the torque for transmitting drive force, and drive the transfer unit to rotate at a circumferential velocity higher than that of the image carrier when the image carrier and the transfer unit are in contact with each other, and a drive unit to output drive force to drive the transfer unit such that the transfer unit rotates at a circumferential velocity lower than that of the image carrier when the image carrier and the transfer unit are separate from each other, and the transfer unit rotates at a circumferential velocity higher than that of the image carrier when the image carrier and the transfer unit are in contact with each other.Type: GrantFiled: November 15, 2013Date of Patent: February 24, 2015Assignee: Ricoh Company, Ltd.Inventors: Makoto Nakura, Shinya Tomita, Naoto Ueda, Yoshinari Onuma, Masanori Takayasu
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Publication number: 20140140741Abstract: An image forming apparatus includes an image carrier, a transfer unit to transfer the image onto a recording medium, a torque limit unit to transmit drive force to the transfer unit at a torque less than the torque for transmitting drive force, and drive the transfer unit to rotate at a circumferential velocity higher than that of the image carrier when the image carrier and the transfer unit are in contact with each other, and a drive unit to output drive force to drive the transfer unit such that the transfer unit rotates at a circumferential velocity lower than that of the image carrier when the image carrier and the transfer unit are separate from each other, and the transfer unit rotates at a circumferential velocity higher than that of the image carrier when the image carrier and the transfer unit are in contact with each other.Type: ApplicationFiled: November 15, 2013Publication date: May 22, 2014Inventors: Makoto NAKURA, Shinya TOMITA, Naoto UEDA, Yoshinari ONUMA, Masanori TAKAYASU
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Patent number: 8095037Abstract: A corona wire cartridge includes: a reel around which a corona wire is wound; a reel holder that rotatably supports the reel; a casing having a receiving portion which receives the reel and the reel holder and a wire drawing opening through which the corona wire is drawn; and an elastic member that movably connects the casing to the reel holder.Type: GrantFiled: April 19, 2007Date of Patent: January 10, 2012Assignee: Ricoh Company, Ltd.Inventors: Yoshinari Onuma, Tsukasa Onose, Koji Doi, Hiroshi Kikuchi
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Publication number: 20070248379Abstract: A corona wire cartridge includes: a reel around which a corona wire is wound; a reel holder that rotatably supports the reel; a casing having a receiving portion which receives the reel and the reel holder and a wire drawing opening through which the corona wire is drawn; and an elastic member that movably connects the casing to the reel holder.Type: ApplicationFiled: April 19, 2007Publication date: October 25, 2007Applicant: Ricoh Printing Systems, Ltd.Inventors: Yoshinari Onuma, Tsukasa Onose, Koji Doi, Hiroshi Kikuchi
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Patent number: D590439Type: GrantFiled: March 21, 2007Date of Patent: April 14, 2009Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Kikuchi, Tsukasa Onose, Koji Doi, Yoshinari Onuma