Patents by Inventor Kenichi Takehara

Kenichi Takehara 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: 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: 9513598
    Abstract: A cooling device includes a rotatable belt extended by a plurarity of extending members that transfers a sheet in contact with the surface of the belt, and a plurality of cooling members to cool the sheet via the belt. A cooling surface of the cooling members contacts an internal surface of the transport belt. The cooling members are detachable. The cooling device also includes an adjuster to adjust a contact condition between the cooling surface and the internal surface according to the number of cooling members installed.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: December 6, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Keisuke Ikeda, Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa
  • 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
  • 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: 9400485
    Abstract: In a cooling device that includes a cooling roller that comprises a hollow tubular member and a cooling medium transport unit for transporting a cooling liquid to the inside of the cooling roller and contacts a sheet-like member to cool down the paper, a turbulence generating unit that generates turbulence in a cooling liquid is disposed near an inner wall of the outer tube.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: July 26, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoshi Okano, Takayuki Nishimura, Kenichi Takehara, Yasuaki Iijima, Hiromitsu Fujiya, Tomoyasu Hirasawa, Masanori Saitoh, Shingo Suzuki, Keisuke Yuasa, Keisuke Ikeda
  • Publication number: 20160195847
    Abstract: A cooling device includes a rotatable belt extended by a plurarity of extending members that transfers a sheet in contact with the surface of the belt, and a plurality of cooling members to cool the sheet via the belt. A cooling surface of the cooling members contacts an internal surface of the transport belt. The cooling members are detachable. The cooling device also includes an adjuster to adjust a contact condition between the cooling surface and the internal surface according to the number of cooling members installed.
    Type: Application
    Filed: March 10, 2016
    Publication date: July 7, 2016
    Inventors: Keisuke IKEDA, Tomoyasu HIRASAWA, Kenichi TAKEHARA, Hiromitsu FUJIYA, Keisuke YUASA
  • 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: 9296235
    Abstract: A cooling device includes a rotatable belt extended by a plurality of extending members that transfers a sheet in contact with the surface of the belt, and a plurality of cooling members to cool the sheet via the belt. A cooling surface of the cooling members contacts an internal surface of the transport belt. The cooling members are detachable. The cooling device also includes an adjuster to adjust a contact condition between the cooling surface and the internal surface according to the number of cooling members installed.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: March 29, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Keisuke Ikeda, Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa
  • 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
  • Publication number: 20150217586
    Abstract: A cooling device includes a rotatable belt extended by a plurality of extending members that transfers a sheet in contact with the surface of the belt, and a plurality of cooling members to cool the sheet via the belt. A cooling surface of the cooling members contacts an internal surface of the transport belt. The cooling members are detachable. The cooling device also includes an adjuster to adjust a contact condition between the cooling surface and the internal surface according to the number of cooling members installed.
    Type: Application
    Filed: April 17, 2015
    Publication date: August 6, 2015
    Inventors: Keisuke IKEDA, Tomoyasu HIRASAWA, Kenichi TAKEHARA, Hiromitsu FUJIYA, Keisuke YUASA
  • 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
  • Patent number: 9044982
    Abstract: A cooling device includes a rotatable belt extended by a plurality of extending members that transfers a sheet in contact with the surface of the belt, and a plurality of cooling members to cool the sheet via the belt. A cooling surface of the cooling members contacts an internal surface of the transport belt. The cooling members are detachable. The cooling device also includes an adjuster to adjust a contact condition between the cooling surface and the internal surface according to the number of cooling members installed.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: June 2, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Keisuke Ikeda, Tomoyasu Hirasawa, Kenichi Takehara, Hiromitsu Fujiya, Keisuke Yuasa
  • 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
  • Patent number: 8879945
    Abstract: A cooling device includes a heat receiving unit arranged to contact with a cooling target to receive heat of the cooling target; a heat radiating unit configured to radiate heat of coolant; a tank configured to store therein the coolant; a circulating path configured to circulate the coolant through the heat receiving unit, the heat radiating unit, and the tank; a pump configured to transfer the coolant in the circulating path; and a liquid transfer detecting unit configured to detect liquid transfer of the coolant. The liquid transfer detecting unit includes a detector arranged above a liquid level of the coolant stored in the tank at a position where the coolant having flowed into the tank is hit when the coolant is transferred. The detector is arranged so as to be visible from the outside of the tank.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: November 4, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Hiomitsu Fujiya, Satoshi Okano, Tomoyasu Hirasawa, Masanori Saitoh, Keisuke Ikeda, Kenichi Takehara, Yasuaki Iijima, Keisuke Yuasa
  • 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
  • Patent number: 8805231
    Abstract: Of a cooling device that is for use in an image forming apparatus and that includes: a heat receiving unit that receives heat from a cooling target and that is disposed to come into and away from contact with the cooling target; a heat radiating unit that radiates the heat received by the heat receiving unit; a heat conductive member disposed on at least one of a surface of the heat receiving unit on the side facing the cooling target and a surface of the cooling target on the side facing the heat receiving unit; and a protection member that is disposed on the heat conductive member to protect the heat conductive member, the protection member is substantially incompatible with binder resin of toner for use in the image forming apparatus.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: August 12, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Shingo Suzuki, Satoshi Okano, Masanori Saitoh, Tomoyasu Hirasawa, Keisuke Ikeda, Kenichi Takehara, Yasuaki Iijima, Hiromitsu Fujiya, Keisuke Yuasa