Patents by Inventor Hiroyoshi Matsumoto

Hiroyoshi Matsumoto 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: 9449798
    Abstract: A plasma processing device includes a plasma processing unit that performs plasma processing on a predetermined area on a target recording medium at least two times; and a control unit that sets a plasma energy amount used by the plasma processing unit to perform a first plasma processing on the predetermined area of the target recording medium as a first energy amount and sets a plasma energy amount used by the plasma processing unit to perform a second plasma processing on the predetermined area as a second energy amount smaller than the first energy amount.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: September 20, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Junji Nakai, Hiroyoshi Matsumoto
  • Patent number: 9427976
    Abstract: A printing apparatus includes: a plasma processing unit that performs plasma processing on a processing target surface side of a processing object; a recording unit that ejects ink on the processing target surface side of the processing object; an acquiring unit that acquires setting information, in which an adjustment target area for adjusting surface roughness and surface roughness of the adjustment target area on a surface of an ink layer formed with the ink are set; and a plasma control unit that controls the plasma processing unit to perform plasma processing on a processing area corresponding to the adjustment target area, on the processing target surface side of the processing object, with an amount of plasma energy for obtaining the set surface roughness on the surface of the ink layer formed on the processing area.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: August 30, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Junji Nakai, Hiroyoshi Matsumoto
  • Publication number: 20160229199
    Abstract: A printing apparatus includes a plasma processor, a recording unit, and a heating unit. The plasma processor performs plasma processing on a processing target matter. The recording unit discharges ink and records dots onto the processing target matter on which the plasma processing has been performed. The heating unit heats an ink discharge region of the processing target matter.
    Type: Application
    Filed: December 21, 2015
    Publication date: August 11, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Junji Nakai, Hiroyoshi Matsumoto
  • Patent number: 9403382
    Abstract: A printing apparatus includes an acidification treatment unit that acidifies at least a surface of a treatment object by irradiating the treatment object with plasma; an inkjet recording unit that records to the treatment object having been acidified by the acidification pretreatment unit in an inkjet recording system; and a control unit that specifies an ink to be used by the inkjet recording unit from at least two types of inks having different properties, based on the type of the treatment object and an amount of plasma energy used in a plasma treatment performed by the acidification treatment unit or based on a pH value of the surface of the treatment object.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: August 2, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshitaka Osanai, Masakazu Yoshida, Junji Nakai, Hiroyoshi Matsumoto
  • Publication number: 20160214403
    Abstract: A processing object modifying apparatus includes a conveying unit that conveys a processing object; a plasma processing unit that performs plasma processing onto a surface of the processing object while the processing object is being conveyed by the conveying unit; a measuring unit that measures a pH value of the processing object to which the plasma processing has been applied; and a controlling unit that controls the conveying unit to change a conveying speed of the processing object on the basis of a measurement result of the measuring unit, the processing object to which the plasma processing is being applied.
    Type: Application
    Filed: December 3, 2015
    Publication date: July 28, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Hiroyoshi Matsumoto, Junji Nakai
  • Publication number: 20160167402
    Abstract: A printing apparatus includes a plasma treatment unit that performs plasma treatment on a surface of a treatment object to acidify at least the surface of the treatment object; and a recording unit that performs inkjet recording on the surface of the plasma treatment subjected to the plasma treatment by the plasma treatment unit.
    Type: Application
    Filed: January 5, 2016
    Publication date: June 16, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Junji Nakai, Hiroyoshi Matsumoto, Masakazu Yoshida, Souichi Nakazawa, Tatsuro Watanabe, Hiroyuki Hiratsuka, Koji Nagai
  • Publication number: 20160159108
    Abstract: According to an aspect of the present invention, a printing apparatus includes a plasma treatment unit configured to acidify at least a surface of a print medium by applying plasma treatment to the surface of the print medium, a first primer applying unit configured to apply primer treatment by applying treatment liquid to the surface of the print medium having undergone the plasma treatment, and a first recording unit configured to perform recording by inkjet recording on the print medium having undergone the primer treatment.
    Type: Application
    Filed: January 28, 2016
    Publication date: June 9, 2016
    Inventors: Hiroyoshi MATSUMOTO, Junji Nakai, Masakazu Yoshida, Toshitaka Osanai
  • Patent number: 9278548
    Abstract: According to an aspect of the present invention, a printing apparatus includes a plasma treatment unit configured to acidify at least a surface of a print medium by applying plasma treatment to the surface of the print medium, a first primer applying unit configured to apply primer treatment by applying treatment liquid to the surface of the print medium having undergone the plasma treatment, and a first recording unit configured to perform recording by inkjet recording on the print medium having undergone the primer treatment.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: March 8, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Hiroyoshi Matsumoto, Junji Nakai, Masakazu Yoshida, Toshitaka Osanai
  • Patent number: 9259924
    Abstract: A printing apparatus includes a plasma treatment unit that performs plasma treatment on a surface of a treatment object to acidify at least the surface of the treatment object; and a recording unit that performs inkjet recording on the surface of the plasma treatment subjected to the plasma treatment by the plasma treatment unit.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: February 16, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Junji Nakai, Hiroyoshi Matsumoto, Masakazu Yoshida, Souichi Nakazawa, Tatsuro Watanabe, Hiroyuki Hiratsuka, Koji Nagai
  • Publication number: 20160009107
    Abstract: A printing apparatus includes: a plasma processing unit that performs plasma processing on a processing target surface side of a processing object; a recording unit that ejects ink on the processing target surface side of the processing object; an acquiring unit that acquires setting information, in which an adjustment target area for adjusting surface roughness and surface roughness of the adjustment target area on a surface of an ink layer formed with the ink are set; and a plasma control unit that controls the plasma processing unit to perform plasma processing on a processing area corresponding to the adjustment target area, on the processing target surface side of the processing object, with an amount of plasma energy for obtaining the set surface roughness on the surface of the ink layer formed on the processing area.
    Type: Application
    Filed: July 8, 2015
    Publication date: January 14, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Junji Nakai, Hiroyoshi Matsumoto
  • Patent number: 9227430
    Abstract: A processing object modifying apparatus includes a conveying unit that conveys a processing object; a plasma processing unit that performs plasma processing onto a surface of the processing object while the processing object is being conveyed by the conveying unit; a measuring unit that measures a pH value of the processing object to which the plasma processing has been applied; and a controlling unit that controls the conveying unit to change a conveying speed of the processing object on the basis of a measurement result of the measuring unit, the processing object to which the plasma processing is being applied.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: January 5, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyoshi Matsumoto, Junji Nakai
  • Publication number: 20150258814
    Abstract: A processing object modifying apparatus includes a conveying unit that conveys a processing object; a plasma processing unit that performs plasma processing onto a surface of the processing object while the processing object is being conveyed by the conveying unit; a measuring unit that measures a pH value of the processing object to which the plasma processing has been applied; and a controlling unit that controls the conveying unit to change a conveying speed of the processing object on the basis of a measurement result of the measuring unit, the processing object to which the plasma processing is being applied.
    Type: Application
    Filed: March 12, 2015
    Publication date: September 17, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hiroyoshi Matsumoto, Junji Nakai
  • Publication number: 20150251453
    Abstract: A plasma processing device includes a plasma processing unit that performs plasma processing on a predetermined area on a target recording medium at least two times; and a control unit that sets a plasma energy amount used by the plasma processing unit to perform a first plasma processing on the predetermined area of the target recording medium as a first energy amount and sets a plasma energy amount used by the plasma processing unit to perform a second plasma processing on the predetermined area as a second energy amount smaller than the first energy amount.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Applicant: Ricoh Company, Ltd.
    Inventors: Junji Nakai, Hiroyoshi Matsumoto
  • Publication number: 20150077458
    Abstract: A printing apparatus includes an acidification treatment unit that acidifies at least a surface of a treatment object by irradiating the treatment object with plasma; an inkjet recording unit that records to the treatment object having been acidified by the acidification pretreatment unit in an inkjet recording system; and a control unit that specifies an ink to be used by the inkjet recording unit from at least two types of inks having different properties, based on the type of the treatment object and an amount of plasma energy used in a plasma treatment performed by the acidification treatment unit or based on a pH value of the surface of the treatment object.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 19, 2015
    Applicant: Ricoh Company, Ltd.
    Inventors: Toshitaka Osanai, Masakazu Yoshida, Junji Nakai, Hiroyoshi Matsumoto
  • Publication number: 20150035918
    Abstract: According to an aspect of the present invention, a printing apparatus includes a plasma treatment unit configured to acidify at least a surface of a print medium by applying plasma treatment to the surface of the print medium, a first primer applying unit configured to apply primer treatment by applying treatment liquid to the surface of the print medium having undergone the plasma treatment, and a first recording unit configured to perform recording by inkjet recording on the print medium having undergone the primer treatment.
    Type: Application
    Filed: July 16, 2014
    Publication date: February 5, 2015
    Inventors: Hiroyoshi MATSUMOTO, Junji NAKAI, Masakazu YOSHIDA, Toshitaka OSANAI
  • Publication number: 20140078212
    Abstract: A printing apparatus includes a plasma treatment unit that performs plasma treatment on a surface of a treatment object to acidify at least the surface of the treatment object; and a recording unit that performs inkjet recording on the surface of the plasma treatment subjected to the plasma treatment by the plasma treatment unit.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 20, 2014
    Inventors: Junji Nakai, Tatsuro Watanabe, Hiroyuki Hiratsuka, Koji Nagai, Masakazu Yoshida, Souichi Nakazawa, Hiroyoshi Matsumoto
  • Patent number: 7844205
    Abstract: A moving unit is made to perform a contacting operation at least two times. The contacting operation includes relatively moving an endless belt and an image carrier so that the endless belt and the image carrier to come in contact with each other.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: November 30, 2010
    Assignee: Ricoh Company, Limited
    Inventor: Hiroyoshi Matsumoto
  • Publication number: 20080219720
    Abstract: A moving unit is made to perform a contacting operation at least two times. The contacting operation includes relatively moving an endless belt and an image carrier so that the endless belt and the image carrier to come in contact with each other.
    Type: Application
    Filed: February 26, 2008
    Publication date: September 11, 2008
    Inventor: Hiroyoshi Matsumoto
  • Patent number: 7406287
    Abstract: A disclosed fixing device includes: a heat roller unit having a rotatable roller having an elastic body on a surface thereof and a heating unit heating the roller; a pad disposed along a circumference of the elastic body of the heat roller; a belt member disposed on a curved surface of the pad, the belt member rotating by following a rotation of the heat roller; and a pressure member pressing the belt member to the heat roller using the pad, the fixing device causing a conveyed recording medium carrying a visualized image to pass through a space between the heat roller and the pressure member so as to fix the visualized image on the recording medium, wherein a curvature of the curved surface of the pad is changed in a central portion and end portions in an axial direction of the heat roller.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: July 29, 2008
    Assignee: Ricoh Printing Systems, Ltd.
    Inventors: Hiroyoshi Matsumoto, Toshio Ogiso, Shigeru Obata, Masahiro Yagi, Chikara Hiraoka, Chiharu Kamoshida
  • Publication number: 20070196145
    Abstract: A disclosed fixing device includes: a heat roller unit having a rotatable roller having an elastic body on a surface thereof and a heating unit heating the roller; a pad disposed along a circumference of the elastic body of the heat roller; a belt member disposed on a curved surface of the pad, the belt member rotating by following a rotation of the heat roller; and a pressure member pressing the belt member to the heat roller using the pad, the fixing device causing a conveyed recording medium carrying a visualized image to pass through a space between the heat roller and the pressure member so as to fix the visualized image on the recording medium, wherein a curvature of the curved surface of the pad is changed in a central portion and end portions in an axial direction of the heat roller.
    Type: Application
    Filed: February 20, 2007
    Publication date: August 23, 2007
    Inventors: Hiroyoshi MATSUMOTO, Toshio OGISO, Shigeru OBATA, Masahiro YAGI, Chikara HIRAOKA, Chiharu KAMOSHIDA