Patents by Inventor Keizoh Shigaki

Keizoh Shigaki 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: 10412564
    Abstract: An apparatus, system, and method for displaying an antenna location of a communication terminal, receives, from a user carrying and operating the communication terminal, an instruction that causes the communication terminal to establish a non-contact communication with a counterpart communication device via an antenna provided in the communication terminal, and controls a display of the communication terminal to display location guide information indicating a location of the antenna in the communication terminal, the location guide information to be used for assisting the user in identifying a section of the communication terminal to be brought closer to the counterpart communication device to start establishing the non-contact communication with the counterpart communication device.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: September 10, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Keizoh Shigaki, Yuuichiroh Tsujiguchi
  • Publication number: 20170156024
    Abstract: An apparatus, system, and method for displaying an antenna location of a communication terminal, receives, from a user carrying and operating the communication terminal, an instruction that causes the communication terminal to establish a non-contact communication with a counterpart communication device via an antenna provided in the communication terminal, and controls a display of the communication terminal to display location guide information indicating a location of the antenna in the communication terminal, the location guide information to be used for assisting the user in identifying a section of the communication terminal to be brought closer to the counterpart communication device to start establishing the non-contact communication with the counterpart communication device.
    Type: Application
    Filed: November 25, 2016
    Publication date: June 1, 2017
    Inventors: Keizoh SHIGAKI, Yuuichiroh TSUJIGUCHI
  • Patent number: 9308754
    Abstract: An image forming apparatus includes a conveyance unit configured to convey a recording medium; a reversing unit configured to reverse front and back sides of the recording medium; a recording head configured to reciprocatingly scan to form a first image on a first side of the recording medium, which is reciprocatingly conveyed by the conveyance unit at a first conveyance speed V1, and a second image on a second side of the recording medium, which is conveyed at a second conveyance speed V2 and ejected, in a case of performing a double-sided printing; and a control unit configured to control the first conveyance speed V1 and the second conveyance speed V2 to satisfy a relation V2?W/t<V1?(W/t)×2, where t is a scanning time required for one reciprocation of the recording head, and W is an image formation width of the recording head.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: April 12, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Hitoshi Sasaki, Yuuichiroh Tsujiguchi, Takuji Kawaguchi, Shigeru Yoshigai, Keizoh Shigaki
  • Publication number: 20160082753
    Abstract: An image forming apparatus includes a conveyance unit configured to convey a recording medium; a reversing unit configured to reverse front and back sides of the recording medium; a recording head configured to reciprocatingly scan to form a first image on a first side of the recording medium, which is reciprocatingly conveyed by the conveyance unit at a first conveyance speed V1, and a second image on a second side of the recording medium, which is conveyed at a second conveyance speed V2 and ejected, in a case of performing a double-sided printing; and a control unit configured to control the first conveyance speed V1 and the second conveyance speed V2 to satisfy a relation V2?W/t<V1?(W/t)×2, where t is a scanning time required for one reciprocation of the recording head, and W is an image formation width of the recording head.
    Type: Application
    Filed: September 8, 2015
    Publication date: March 24, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Hitoshi Sasaki, Yuuichiroh Tsujiguchi, Takuji Kawaguchi, Shigeru Yoshigai, Keizoh Shigaki
  • Publication number: 20160067989
    Abstract: An image formation apparatus includes a conveying unit that conveys a recording medium; a recording head that reciprocates in a direction orthogonal to a conveying direction of the recording medium while the recording medium is being conveyed by the conveying unit, the recording head forming an image on the recording medium; a reception unit that receives scan image data, the scan image data being used to form the image, while the recording head waits in a non-printing region of the recording medium; and a control unit that controls a conveyance distance of the recording medium conveyed by the conveying unit while the recording head waits in the non-printing region. The control of the conveyance distance of the recording medium is determined based on a scan image data reception period of the scan image data, the scan image data reception period being obtained from a communication speed of the reception unit.
    Type: Application
    Filed: September 8, 2015
    Publication date: March 10, 2016
    Applicant: RICOH COMPANY, LTD.
    Inventors: Shigeru Yoshigai, Yuuichiroh Tsujiguchi, Hitoshi Sasaki, Takuji Kawaguchi, Keizoh Shigaki