Patents by Inventor Takuya TANIMURA

Takuya TANIMURA 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).

  • Power supply and image forming apparatus incorporating same
    Patent number: 11194279
    Abstract: A power supply includes a first control circuit configured to control an output voltage of the power supply, a second control circuit configured to control an output current of the power supply, a switching circuit configured to switch control of the power supply from the first control circuit to the second control circuit based on the output current of the power supply while the first control circuit controls the output voltage of the power supply, and a power supply control circuit configured to output status information indicating a failure of the power supply acquired based on the output voltage of the power supply while the second control circuit controls the output current of the power supply.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: December 7, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuya Ogino, Shuntaro Nakayama, Takuya Tanimura, Kentaroh Kajita
  • Power supply device and image forming apparatus including the power supply device
    Patent number: 10871737
    Abstract: A power supply device is connectable to a commercial power supply to output power to a supply destination device. The power supply device includes a filter circuit and a switching unit. The filter circuit includes a capacitor unit. The switching unit is configured to switch a capacitor capacity of the capacitor unit.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: December 22, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuya Tanimura, Kazumasa Kiyonaga, Yoshiteru Hagiwara
  • POWER SUPPLY AND IMAGE FORMING APPARATUS INCORPORATING SAME
    Publication number: 20200363762
    Abstract: A power supply includes a first control circuit configured to control an output voltage of the power supply, a second control circuit configured to control an output current of the power supply, a switching circuit configured to switch control of the power supply from the first control circuit to the second control circuit based on the output current of the power supply while the first control circuit controls the output voltage of the power supply, and a power supply control circuit configured to output status information indicating a failure of the power supply acquired based on the output voltage of the power supply while the second control circuit controls the output current of the power supply.
    Type: Application
    Filed: May 7, 2020
    Publication date: November 19, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: TATSUYA OGINO, SHUNTARO NAKAYAMA, TAKUYA TANIMURA, KENTAROH KAJITA
  • POWER SUPPLY DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE POWER SUPPLY DEVICE
    Publication number: 20200041942
    Abstract: A power supply device is connectable to a commercial power supply to output power to a supply destination device. The power supply device includes a filter circuit and a switching unit. The filter circuit includes a capacitor unit. The switching unit is configured to switch a capacitor capacity of the capacitor unit.
    Type: Application
    Filed: July 24, 2019
    Publication date: February 6, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Takuya TANIMURA, Kazumasa KIYONAGA, Yoshiteru HAGIWARA