Patents by Inventor Yoshihito OTOI

Yoshihito OTOI 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).

  • Liquid discharge apparatus and liquid discharge method
    Patent number: 11884065
    Abstract: A liquid discharge apparatus includes a liquid discharge portion having a liquid discharge port and a liquid discharge unit. The liquid discharge portion performs a liquid discharge to discharge a liquid in a liquid discharge direction. The liquid discharge unit holds the liquid discharge portion and is movable along the liquid discharge direction. The liquid discharge apparatus further includes a first driver to move the liquid discharge unit along the liquid discharge direction, a second driver to move the liquid discharge portion relative to the liquid discharge unit along the liquid discharge direction, an abnormality detector to detect an abnormality of the liquid discharge unit, and circuitry. The circuitry increases an excitation current of the first driver in response to an abnormality detection signal from the abnormality detector or an instruction to clean the liquid discharge portion, and drives the second driver after increasing the excitation current.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: January 30, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventor: Yoshihito Otoi
  • LIQUID DISCHARGE APPARATUS AND LIQUID DISCHARGE METHOD
    Publication number: 20220134731
    Abstract: A liquid discharge apparatus includes a liquid discharge portion having a liquid discharge port and a liquid discharge unit. The liquid discharge portion performs a liquid discharge to discharge a liquid in a liquid discharge direction. The liquid discharge unit holds the liquid discharge portion and is movable along the liquid discharge direction. The liquid discharge apparatus further includes a first driver to move the liquid discharge unit along the liquid discharge direction, a second driver to move the liquid discharge portion relative to the liquid discharge unit along the liquid discharge direction, an abnormality detector to detect an abnormality of the liquid discharge unit, and circuitry. The circuitry increases an excitation current of the first driver in response to an abnormality detection signal from the abnormality detector or an instruction to clean the liquid discharge portion, and drives the second driver after increasing the excitation current.
    Type: Application
    Filed: October 29, 2021
    Publication date: May 5, 2022
    Inventor: Yoshihito OTOI