Patents by Inventor Yasuaki Toda

Yasuaki Toda 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).

  • Patent number: 10180652
    Abstract: A drawer, which is included in an electronic apparatus and an image forming apparatus, includes a drawing portion, a support shaft extending in a removing direction of the drawing portion, a handle at a downstream end of the support shaft, a locking portion at an upstream end of the support shaft, and a fixing member on the drawing portion. A rotation of the handle rotates the support shaft and the locking portion together between an unlocked state in which the drawing portion is fixed and a locked state in which the drawing portion is movable. The locking portion includes a fitting projection fitting to the fixing member in the locked state. The fitting projection includes a first wall extending from a root of the fitting projection, a second wall configured to contact the fixing member in the locked state, and a slanted portion inclined toward the removing direction.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: January 15, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Yasuaki Toda
  • Publication number: 20180095417
    Abstract: A drawer, which is included in an electronic apparatus and an image forming apparatus, includes a drawing portion, a support shaft extending in a removing direction of the drawing portion, a handle at a downstream end of the support shaft, a locking portion at an upstream end of the support shaft, and a fixing body on the drawing portion. A rotation of the handle rotates the supporting shaft and the locking portion together between an unlocked state in which the drawing portion is fixed and a locked state in which the drawing portion is movable. The locking portion includes a fitting portion fitting to the fixing body in the locked state. The fitting portion includes a first wall extending from a root of the fitting portion, a second wall configured to contact the fixing body in the locked state, and a slanted portion inclined toward the removing direction.
    Type: Application
    Filed: August 22, 2017
    Publication date: April 5, 2018
    Applicant: Ricoh Company, Ltd.
    Inventor: Yasuaki TODA
  • Patent number: 9864334
    Abstract: A recording-material cooling device includes a first cooling member, a second cooling member, an approach-and-separation member, and a positioning member. The first cooling member is disposed at a first face side of a recording material to absorb heat of the recording material. The second cooling member is disposed at a second face side of the recording material to absorb heat of the recording material. The approach-and-separation member brings the first cooling member and the second cooling member close to and away from each other. The positioning member positions the first cooling member and the second cooling member relatively brought close to each other by the approach-and-separation member.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: January 9, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Keisuke Ikeda, Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Yasuaki Toda, Susumu Tateyama, Hiroaki Miyagawa, Kenji Ishii, Takeshi Watanabe
  • Patent number: 9791828
    Abstract: An image forming apparatus includes a latent image bearer, a charger, a blower, a first detector, and a second detector. The charger charges a surface of the latent image bearer. The blower sends air to around the charger. The first detector detects a temperature of the air to be sent to around the charger. The second detector detects a temperature around the charger. The blower performs an operation based on a detection result of the first detector and a detection result of the second detector.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 17, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiromitsu Fujiya, Yasuaki Toda
  • Publication number: 20160342136
    Abstract: A recording-material cooling device includes a first cooling member, a second cooling member, an approach-and-separation member, and a positioning member. The first cooling member is disposed at a first face side of a recording material to absorb heat of the recording material. The second cooling member is disposed at a second face side of the recording material to absorb heat of the recording material. The approach-and-separation member brings the first cooling member and the second cooling member close to and away from each other. The positioning member positions the first cooling member and the second cooling member relatively brought close to each other by the approach-and-separation member.
    Type: Application
    Filed: August 5, 2016
    Publication date: November 24, 2016
    Inventors: Keisuke IKEDA, Tomoyasu HIRASAWA, Kenichi TAKEHARA, Hiromitsu FUJIYA, Keisuke YUASA, Yasuaki TODA, Susumu TATEYAMA, Hiroaki MIYAGAWA, Kenji ISHII, Takeshi WATANABE
  • Publication number: 20160342135
    Abstract: An image forming apparatus includes a latent image bearer, a charger, a blower, a first detector, and a second detector. The charger charges a surface of the latent image bearer. The blower sends air to around the charger. The first detector detects a temperature of the air to be sent to around the charger. The second detector detects a temperature around the charger. The blower performs an operation based on a detection result of the first detector and a detection result of the second detector.
    Type: Application
    Filed: May 13, 2016
    Publication date: November 24, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Hiromitsu Fujiya, Yasuaki TODA
  • Patent number: 9483018
    Abstract: A recording-material cooling device includes a first belt, a first cooling unit, and a second cooling unit. The first belt is disposed at a first face side of a recording material. The first cooling unit has a first heat absorbing surface to contact the first belt to absorb heat of the recording material. The second cooling unit has a second heat absorbing surface to directly or indirectly contact the recording material to absorb heat of the recording material. The second cooling unit is disposed at a second face side of the recording material. The first and second cooling units are offset from each other in a transport direction of the recording material. Each of the first and second surfaces has a shape in which an inner area protrudes beyond opposed ends in the transport direction. The first and second surfaces overlap each other in a direction crossing the transport direction.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: November 1, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Yasuaki Toda, Yutaka Shoji, Kenji Ishii, Makoto Nakura, Susumu Tateyama, Hiroaki Miyagawa, Keisuke Ikeda, Takeshi Watanabe
  • Patent number: 9465358
    Abstract: A recording-material cooling device includes a first cooling member, a second cooling member, an approach-and-separation member, and a positioning member. The first cooling member is disposed at a first face side of a recording material to absorb heat of the recording material. The second cooling member is disposed at a second face side of the recording material to absorb heat of the recording material. The approach-and-separation member brings the first cooling member and the second cooling member close to and away from each other. The positioning member positions the first cooling member and the second cooling member relatively brought close to each other by the approach-and-separation member.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: October 11, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Keisuke Ikeda, Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Yasuaki Toda, Susumu Tateyama, Hiroaki Miyagawa, Kenji Ishii, Takeshi Watanabe
  • Patent number: 9360837
    Abstract: An air-conditioning unit includes an air conditioner to control air temperature, a first channel to guide air supplied from the air conditioner to a conditioning target, a heat exchange channel through which the air supplied from the air conditioner exchanges heat with the conditioning target, a second channel to guide air from the conditioning target either outside the air-conditioning unit or to the air conditioner, and a channel switching unit to cause the air conditioner to suck in either external air or the air guided from the conditioning target.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: June 7, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Yasuaki Toda, Keisuke Ikeda
  • Patent number: 9354601
    Abstract: A liquid type cooling device, which is incorporated in an image forming apparatus, includes a heat receiving part including a heat receiving unit to transport heat from a cooling target to a coolant and a heat releasing part including a heat releasing unit, a cooling fan, and an air flowing space. The heat releasing unit has a coolant flowing path and an air flowing path through which air passes and conducts heat exchange with the coolant. The air flowing space has an air inlet port and an air outlet port. When the air flowing path has an upstream region and a downstream region along a coolant flowing direction of the coolant flowing path, air at high temperature flows into the upstream region of the air flowing path. Alternatively, the heat releasing unit may have a coolant inlet port, a coolant outlet port, and the air flowing path.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: May 31, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyasu Hirasawa, Hiromitsu Fujiya, Keisuke Yuasa, Yasuaki Toda, Kenji Ishii, Susumu Tateyama, Hiroaki Miyagawa, Keisuke Ikeda
  • Publication number: 20160048106
    Abstract: A recording-material cooling device includes a first belt, a first cooling unit, and a second cooling unit. The first belt is disposed at a first face side of a recording material. The first cooling unit has a first heat absorbing surface to contact the first belt to absorb heat of the recording material. The second cooling unit has a second heat absorbing surface to directly or indirectly contact the recording material to absorb heat of the recording material. The second cooling unit is disposed at a second face side of the recording material. The first and second cooling units are offset from each other in a transport direction of the recording material. Each of the first and second surfaces has a shape in which an inner area protrudes beyond opposed ends in the transport direction. The first and second surfaces overlap each other in a direction crossing the transport direction.
    Type: Application
    Filed: October 27, 2015
    Publication date: February 18, 2016
    Inventors: Tomoyasu HIRASAWA, Kenichi TAKEHARA, Hiromitsu FUJIYA, Keisuke YUASA, Yasuaki TODA, Yutaka SHOJI, Kenji ISHII, Makoto NAKURA, Susumu TATEYAMA, Hiroaki MIYAGAWA, Keisuke IKEDA, Takeshi WATANABE
  • Patent number: 9217979
    Abstract: A recording-material cooling device includes a first belt, a first cooling unit, and a second cooling unit. The first belt is disposed at a first face side of a recording material. The first cooling unit has a first heat absorbing surface to contact the first belt to absorb heat of the recording material. The second cooling unit has a second heat absorbing surface to directly or indirectly contact the recording material to absorb heat of the recording material. The second cooling unit is disposed at a second face side of the recording material. The first and second cooling units are offset from each other in a transport direction of the recording material. Each of the first and second surfaces has a shape in which an inner area protrudes beyond opposed ends in the transport direction. The first and second surfaces overlap each other in a direction crossing the transport direction.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: December 22, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Yasuaki Toda, Yutaka Shoji, Kenji Ishii, Makoto Nakura, Susumu Tateyama, Hiroaki Miyagawa, Keisuke Ikeda, Takeshi Watanabe
  • Publication number: 20150227111
    Abstract: A recording-material cooling device includes a first cooling member, a second cooling member, an approach-and-separation member, and a positioning member. The first cooling member is disposed at a first face side of a recording material to absorb heat of the recording material. The second cooling member is disposed at a second face side of the recording material to absorb heat of the recording material. The approach-and-separation member brings the first cooling member and the second cooling member close to and away from each other. The positioning member positions the first cooling member and the second cooling member relatively brought close to each other by the approach-and-separation member.
    Type: Application
    Filed: April 23, 2015
    Publication date: August 13, 2015
    Inventors: Keisuke IKEDA, Tomoyasu HIRASAWA, Kenichi TAKEHARA, Hiromitsu FUJIYA, Keisuke YUASA, Yasuaki TODA, Susumu TATEYAMA, Hiroaki MIYAGAWA, Kenji ISHII, Takeshi WATANABE
  • Patent number: 9046872
    Abstract: A cooling device includes a cooling member to cool a recording material. The cooling member includes a cooling surface member, a heat exchanging member, and a fastening member. The cooling surface member has a cooling surface to directly or indirectly contact the recording material and absorb heat of the recording material to cool the recording material. The heat exchanging member is directly or indirectly joined to the cooling surface member to radiate heat absorbed by the cooling surface member directly or indirectly via a radiation member. The fastening member fastens the cooling surface member and the heat exchanging member to retain a joined state in which the cooling surface member and the heat exchanging member are directly or indirectly joined to each other. The cooling surface member and the heat exchanging member are separable from the joined state to a separated state without damaging the fastening member.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: June 2, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Keisuke Ikeda, Makoto Nakura, Susumu Tateyama, Hiroaki Miyagawa, Yasuaki Toda, Yutaka Shoji, Kenji Ishii, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Shinji Kato, Tomoyasu Hirasawa
  • Patent number: 9046858
    Abstract: A recording-material cooling device includes a first cooling member, a second cooling member, an approach-and-separation member, and a positioning member. The first cooling member is disposed at a first face side of a recording material to absorb heat of the recording material. The second cooling member is disposed at a second face side of the recording material to absorb heat of the recording material. The approach-and-separation member brings the first cooling member and the second cooling member close to and away from each other. The positioning member positions the first cooling member and the second cooling member relatively brought close to each other by the approach-and-separation member.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: June 2, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Keisuke Ikeda, Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Yasuaki Toda, Susumu Tateyama, Hiroaki Miyagawa, Kenji Ishii, Takeshi Watanabe
  • Publication number: 20150071677
    Abstract: A liquid type cooling device, which is incorporated in an image forming apparatus, includes a heat receiving part including a heat receiving unit to transport heat from a cooling target to a coolant and a heat releasing part including a heat releasing unit, a cooling fan, and an air flowing space. The heat releasing unit has a coolant flowing path and an air flowing path through which air passes and conducts heat exchange with the coolant. The air flowing space has an air inlet port and an air outlet port. When the air flowing path has an upstream region and a downstream region along a coolant flowing direction of the coolant flowing path, air at high temperature flows into the upstream region of the air flowing path. Alternatively, the heat releasing unit may have a coolant inlet port, a coolant outlet port, and the air flowing path.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 12, 2015
    Inventors: Tomoyasu HIRASAWA, Hiromitsu FUJIYA, Keisuke YUASA, Yasuaki TODA, Kenji ISHII, Susumu TATEYAMA, Hiroaki MIYAGAWA, Keisuke IKEDA
  • Patent number: 8977159
    Abstract: An image forming apparatus includes an air-conditioning section to control at least one of temperature and humidity of air, a first passage to guide the air sent off by the air-conditioning section to a temperature-controlled portion in the image forming apparatus, an air-intake section to take in the air from outside of the image forming apparatus, and a second passage to guide the air taken in by the air-intake section to the temperature-controlled portion.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: March 10, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Tomoyasu Hirasawa, Keisuke Ikeda, Yasuaki Toda
  • Publication number: 20140233996
    Abstract: A cooling device includes a cooling member to cool a recording material. The cooling member includes a cooling surface member, a heat exchanging member, and a fastening member. The cooling surface member has a cooling surface to directly or indirectly contact the recording material and absorb heat of the recording material to cool the recording material. The heat exchanging member is directly or indirectly joined to the cooling surface member to radiate heat absorbed by the cooling surface member directly or indirectly via a radiation member. The fastening member fastens the cooling surface member and the heat exchanging member to retain a joined state in which the cooling surface member and the heat exchanging member are directly or indirectly joined to each other. The cooling surface member and the heat exchanging member are separable from the joined state to a separated state without damaging the fastening member.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 21, 2014
    Inventors: Keisuke IKEDA, Makoto NAKURA, Susumu TATEYAMA, Hiroaki MIYAGAWA, Yasuaki TODA, Yutaka SHOJI, Kenji ISHII, Kenichi TAKEHARA, Hiromitsu FUJIYA, Keisuke YUASA, Shinji KATO, Tomoyasu HIRASAWA
  • Publication number: 20140186080
    Abstract: A recording-material cooling device includes a first cooling member, a second cooling member, an approach-and-separation member, and a positioning member. The first cooling member is disposed at a first face side of a recording material to absorb heat of the recording material. The second cooling member is disposed at a second face side of the recording material to absorb heat of the recording material. The approach-and-separation member brings the first cooling member and the second cooling member close to and away from each other. The positioning member positions the first cooling member and the second cooling member relatively brought close to each other by the approach-and-separation member.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Inventors: Keisuke Ikeda, Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Yasuaki Toda, Susumu Tateyama, Hiroaki Miyagawa, Kenji Ishii, Takeshi Watanabe
  • Publication number: 20140186081
    Abstract: A recording-material cooling device includes a first belt, a first cooling unit, and a second cooling unit. The first belt is disposed at a first face side of a recording material. The first cooling unit has a first heat absorbing surface to contact the first belt to absorb heat of the recording material. The second cooling unit has a second heat absorbing surface to directly or indirectly contact the recording material to absorb heat of the recording material. The second cooling unit is disposed at a second face side of the recording material. The first and second cooling units are offset from each other in a transport direction of the recording material. Each of the first and second surfaces has a shape in which an inner area protrudes beyond opposed ends in the transport direction. The first and second surfaces overlap each other in a direction crossing the transport direction.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Inventors: Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa, Yasuaki Toda, Yutaka Shoji, Kenji Ishii, Makoto Nakura, Susumu Tateyama, Hiroaki Miyagawa, Keisuke Ikeda, Takeshi Watanabe