Patents by Inventor Kiyoshi Tsukamura

Kiyoshi Tsukamura 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: 11964470
    Abstract: An image forming apparatus includes a printing device, a rotator, an upstream support stand. The printing device prints an image on a plate-shaped printing medium. The rotator rotates while nipping the plate-shaped printing medium and conveys the plate-shaped printing medium to the printing device. The upstream support stand supports the plate-shaped printing medium at a position upstream from the rotator in a conveyance direction of the plate-shaped printing medium and includes a mount. The mount is detachably attached to the rotator.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: April 23, 2024
    Assignee: RICOH COMPANY LTD.
    Inventors: Soichi Saiga, Atsushi Yanaka, Kiyoshi Tsukamura
  • Patent number: 11964467
    Abstract: An image forming apparatus includes a liquid discharge head, an irradiation unit, a carriage, and a moving unit. The liquid discharge head discharges a liquid including a metallic ink and a color ink onto a recording medium. The irradiation unit irradiates the liquid on the recording medium with light. The liquid discharge head and the irradiation unit are mounted on the carriage. The moving unit perform a main scanning movement and a sub-scanning movement. The liquid discharge head discharges the metallic ink in a region of the recording medium in the main scanning movement and discharges the color ink in the region in which the metallic ink has been discharged, in the same main scanning movement in which the metallic ink is discharged. The irradiation unit irradiates the region in which the metallic ink and the color ink have been discharged, with the light in the same main scanning movement.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: April 23, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuki Tsuchiya, Yuusuke Matsuki, Daisuke Mezaki, Kiyoshi Tsukamura
  • Publication number: 20220314663
    Abstract: An image forming apparatus includes a printing device, a nipping rotator, an upstream support stand, a plurality of rotators, a supporter, and an adjusting mechanism. The printing device prints an image on a plate-shaped printing medium. The nipping rotator conveys the plate-shaped printing medium. The upstream support stand supports the plate-shaped printing medium at a position upstream from the nipping rotator in a conveyance direction of the plate-shaped printing medium. The plurality of rotators are disposed side by side. The supporter supports the plurality of rotators. The adjusting mechanism adjusts relative positions of the plurality of rotators and the supporter.
    Type: Application
    Filed: March 9, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Soichi SAIGA, Atsushi YANAKA, Kiyoshi TSUKAMURA
  • Publication number: 20220314657
    Abstract: An image forming apparatus includes a liquid discharge head, an irradiation unit, a carriage, and a moving unit. The liquid discharge head discharges a liquid onto a recording medium. The liquid includes a metallic ink and a color ink. The irradiation unit irradiates the liquid on the recording medium with light. The liquid discharge head and the irradiation unit are mounted on the carriage. The moving unit alternately perform a main scanning movement and a sub-scanning movement. The liquid discharge head discharges the metallic ink in a region of the recording medium in a former main scanning movement and discharges the color ink in the region in which the metallic ink has been discharged, in a latter main scanning movement after the former main scanning movement. The irradiation unit irradiates the region in which the color ink has been discharged with the light.
    Type: Application
    Filed: March 21, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuusuke Matsuki, Daisuke Mezaki, Kiyoshi Tsukamura, Yuki Tsuchiya
  • Publication number: 20220314667
    Abstract: An image forming apparatus includes a liquid discharge head, an irradiation unit, a carriage, and a moving unit. The liquid discharge head discharges a liquid including a metallic ink and a color ink onto a recording medium. The irradiation unit irradiates the liquid on the recording medium with light. The liquid discharge head and the irradiation unit are mounted on the carriage. The moving unit perform a main scanning movement and a sub-scanning movement. The liquid discharge head discharges the metallic ink in a region of the recording medium in the main scanning movement and discharges the color ink in the region in which the metallic ink has been discharged, in the same main scanning movement in which the metallic ink is discharged. The irradiation unit irradiates the region in which the metallic ink and the color ink have been discharged, with the light in the same main scanning movement.
    Type: Application
    Filed: March 21, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuki Tsuchiya, Yuusuke Matsuki, Daisuke Mezaki, Kiyoshi Tsukamura
  • Publication number: 20220314658
    Abstract: An image forming apparatus includes a metallic ink discharge head, a color ink discharge head, an irradiation unit, a carriage, and a moving unit. The metallic ink discharge head discharges a metallic ink onto a recording medium. The color ink discharge head discharges a color ink onto the recording medium. The irradiation unit irradiates the metallic ink with light. The metallic ink discharge head, the color ink discharge head, and the irradiation unit are mounted on the carriage. The moving unit alternately perform a main scanning movement and a sub-scanning movement. The metallic ink discharge head discharges the metallic ink in a region of the recording medium in a former main scanning movement. The irradiation unit irradiates the region with the light in a latter main scanning movement. The color ink discharge head discharges the color ink in the region irradiated with the light by the irradiation unit.
    Type: Application
    Filed: March 21, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Daisuke Mezaki, Yuki Tsuchiya, Yuusuke Matsuki, Kiyoshi Tsukamura
  • Publication number: 20220314660
    Abstract: An image forming apparatus includes a printing device, a rotator, an upstream support stand. The printing device prints an image on a plate-shaped printing medium. The rotator rotates while nipping the plate-shaped printing medium and conveys the plate-shaped printing medium to the printing device. The upstream support stand supports the plate-shaped printing medium at a position upstream from the rotator in a conveyance direction of the plate-shaped printing medium and includes a mount. The mount is detachably attached to the rotator.
    Type: Application
    Filed: March 16, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Soichi SAIGA, Atsushi YANAKA, Kiyoshi TSUKAMURA
  • Patent number: 8523337
    Abstract: An image forming apparatus, includes a liquid jet head; a container main body; an air opening mechanism configured to open and close an air opening path in the container main body. The air opening mechanism includes a holding part, and an opening member movably provided at the holding part. The opening member includes an air communicating path, a filter member, and an air room. An opening cross-sectional area of the air room in a direction perpendicular to an air flow-in direction is greater than an opening cross-sectional area of the air communicating path in a direction perpendicular to an air flow-in direction.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: September 3, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Kiyoshi Tsukamura, Kenji Hiratani, Makoto Kikura, Yuzo Obata, Daisuke Nakamura
  • Publication number: 20130155158
    Abstract: An image forming apparatus, includes a liquid jet head; a container main body; an air opening mechanism configured to open and close an air opening path in the container main body. The air opening mechanism includes a holding part, and an opening member movably provided at the holding part. The opening member includes an air communicating path, a filter member, and an air room. An opening cross-sectional area of the air room in a direction perpendicular to an air flow-in direction is greater than an opening cross-sectional area of the air communicating path in a direction perpendicular to an air flow-in direction.
    Type: Application
    Filed: February 11, 2013
    Publication date: June 20, 2013
    Applicant: RICOH COMPANY, LTD
    Inventors: Kiyoshi Tsukamura, Kenji Hiratani, Makoto Kikura, Yuzo Obata, Daisuke Nakamura
  • Patent number: 8398218
    Abstract: An image forming apparatus, includes a liquid jet head; a container main body; an air opening mechanism configured to open and close an air opening path in the container main body. The air opening mechanism includes a holding part, and an opening member movably provided at the holding part. The opening member includes an air communicating path, a filter member, and an air room. An opening cross-sectional area of the air room in a direction perpendicular to an air flow-in direction is greater than an opening cross-sectional area of the air communicating path in a direction perpendicular to an air flow-in direction.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: March 19, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Kiyoshi Tsukamura, Kenji Hiratani, Makoto Kikura, Yuzo Obata, Daisuke Nakamura
  • Patent number: 8272725
    Abstract: A liquid container including a container body to store a liquid, a pressure release mechanism to open and close a pressure release path in the container body, and a fixing member to fix a holder of the pressure release mechanism to a cylindrical holder mounting part of the container body by being inserted into each of a mounting portion of the holder and a mounting portion of the cylindrical holder mounting part from a horizontal direction perpendicular to positions of multiple hooks provided to the container body while the holder including a valve mechanism is inserted into the cylindrical holder mounting part.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: September 25, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Kiyoshi Tsukamura
  • Patent number: 8047637
    Abstract: A piezoelectric actuator is disclosed. The piezoelectric actuator includes a base member and three or more piezoelectric element members in which plural piezoelectric elements are formed by slits. The three or more piezoelectric element members are arrayed in a line on the base member and a gap is formed at the connection position between two adjacent piezoelectric element members.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: November 1, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Kiyoshi Tsukamura, Kenichiroh Hashimoto, Kiyoshi Yamaguchi
  • Publication number: 20110141209
    Abstract: An image forming apparatus, includes a liquid jet head; a container main body; an air opening mechanism configured to open and close an air opening path in the container main body. The air opening mechanism includes a holding part, and an opening member movably provided at the holding part. The opening member includes an air communicating path, a filter member, and an air room. An opening cross-sectional area of the air room in a direction perpendicular to an air flow-in direction is greater than an opening cross-sectional area of the air communicating path in a direction perpendicular to an air flow-in direction.
    Type: Application
    Filed: August 20, 2009
    Publication date: June 16, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kiyoshi Tsukamura, Kenji Hiratani, Makoto Kikura, Yuzo Obata, Daisuke Nakamura
  • Patent number: 7857434
    Abstract: A liquid discharging head includes a nozzle, a pressing liquid chamber, a plurality of energy generators, and a base. The nozzle discharges a liquid drop. The pressing liquid chamber is connected to the nozzle and contains liquid. The plurality of energy generators generates energy for applying pressure to the liquid contained in the pressing liquid chamber. The plurality of energy generators is provided on the base in a longitudinal direction of the base. The base includes an adhering surface and a wide portion. The plurality of energy generators is provided on the adhering surface. The wide portion has a width greater than a width of the adhering surface in a short direction of the base.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: December 28, 2010
    Assignee: Ricoh Company, Ltd.
    Inventor: Kiyoshi Tsukamura
  • Publication number: 20100302327
    Abstract: A liquid container including a container body to store a liquid, a pressure release mechanism to open and close a pressure release path in the container body, and a fixing member to fix a holder of the pressure release mechanism to a cylindrical holder mounting part of the container body by being inserted into each of a mounting portion of the holder and a mounting portion of the cylindrical holder mounting part from a horizontal direction perpendicular to positions of multiple hooks provided to the container body while the holder including a valve mechanism is inserted into the cylindrical holder mounting part.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Applicant: RICOH COMPANY, LTD.
    Inventor: Kiyoshi TSUKAMURA
  • Publication number: 20100245490
    Abstract: A piezoelectric actuator is disclosed. The piezoelectric actuator includes a base member and three or more piezoelectric element members in which plural piezoelectric elements are formed by slits. The three or more piezoelectric element members are arrayed in a line on the base member and a gap is formed at the connection position between two adjacent piezoelectric element members.
    Type: Application
    Filed: June 11, 2010
    Publication date: September 30, 2010
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kiyoshi TSUKAMURA, Kenichiroh Hashimoto, Kiyoshi Yamaguchi
  • Patent number: 7764006
    Abstract: A piezoelectric actuator is disclosed. The piezoelectric actuator includes a base member and three or more piezoelectric element members in which plural piezoelectric elements are formed by slits. The three or more piezoelectric element members are arrayed in a line on the base member and a gap is formed at the connection position between two adjacent piezoelectric element members.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: July 27, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Kiyoshi Tsukamura, Kenichiroh Hashimoto, Kiyoshi Yamaguchi
  • Patent number: 7623816
    Abstract: In an intermediate transfer part (100), a bead 107 is formed on an inner side of an intermediate transfer belt (102), which is rotated by an intermediate transfer belt drive roller (101). Driven roller bearings (104a, 104b) support an intermediate transfer belt driven roller (103). The intermediate transfer belt driven roller (103) is movable in a thrust direction. Ends of the intermediate transfer belt driven roller (101) and the intermediate transfer belt driven roller (103) interfere with a bead (107) so as to restrict a deflection of the intermediate transfer belt in the thrust direction. The intermediate transfer belt driven roller (103) is movable in the thrust direction against a deflection of the intermediate transfer belt (102).
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: November 24, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuneo Maki, Tomiyoshi Misumi, Kiyoshi Tsukamura, Yohichi Itoh, Hideo Aoki
  • Publication number: 20080136874
    Abstract: A liquid discharging head includes a nozzle, a pressing liquid chamber, a plurality of energy generators, and a base. The nozzle discharges a liquid drop. The pressing liquid chamber is connected to the nozzle and contains liquid. The plurality of energy generators generates energy for applying pressure to the liquid contained in the pressing liquid chamber. The plurality of energy generators is provided on the base in a longitudinal direction of the base. The base includes an adhering surface and a wide portion. The plurality of energy generators is provided on the adhering surface. The wide portion has a width greater than a width of the adhering surface in a short direction of the base.
    Type: Application
    Filed: November 8, 2007
    Publication date: June 12, 2008
    Inventor: Kiyoshi TSUKAMURA
  • Publication number: 20070247026
    Abstract: A piezoelectric actuator is disclosed. The piezoelectric actuator includes a base member and three or more piezoelectric element members in which plural piezoelectric elements are formed by slits. The three or more piezoelectric element members are arrayed in a line on the base member and a gap is formed at the connection position between two adjacent piezoelectric element members.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 25, 2007
    Inventors: Kiyoshi Tsukamura, Kenichiroh Hashimoto, Kiyoshi Yamaguchi