Patents by Inventor Yoshihito Tsuboi

Yoshihito Tsuboi 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).

  • PRINTING APPARATUS, PRINTING SYSTEM, PRINTING METHOD, AND NON-TRANSITORY RECORDING MEDIUM
    Publication number: 20240165978
    Abstract: A printing apparatus includes a print execution device and an illumination device. The print execution device includes a plurality of heads to print an image on a print medium based on print data. The illumination device irradiates the printed image on the print medium with illumination light from behind a printed face of the print medium.
    Type: Application
    Filed: September 1, 2023
    Publication date: May 23, 2024
    Applicant: Ricoh Company, Ltd.
    Inventors: Jun Hitosugi, Masayuki Tsuchiya, Yoshihito Tsuboi, Kenji Ishii
  • Image forming apparatus and image scanning method
    Patent number: 7315405
    Abstract: As a reading light source, a cold-cathode tube having three wavelengths and an LED array are used in combination. The cold-cathode tube and the LEDs are lit up at different timings when reading a document.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: January 1, 2008
    Assignee: Ricoh Company, Ltd.
    Inventor: Yoshihito Tsuboi
  • Image forming apparatus and image scanning method
    Publication number: 20050041269
    Abstract: As a reading light source, a cold-cathode tube having three wavelengths and an LED array are used in combination. The cold-cathode tube and the LEDs are lit up at different timings when reading a document.
    Type: Application
    Filed: August 20, 2004
    Publication date: February 24, 2005
    Inventor: Yoshihito Tsuboi