The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2025
Filed:
Oct. 19, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Kei Kosaka, Tokyo, JP;
Tetsuya Narazaki, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A liquid discharge apparatus includes a print head with a nozzle discharging a liquid, a pump to suction the liquid from the nozzle, and to eject the liquid into a waste liquid tank, a control unit to change a driving amount of the pump to control an amount of the liquid ejected, and a calculation unit to calculate an amount of the liquid in the tank. The control unit drives the pump by a second driving amount less than a first, if a sum of an amount of the liquid ejected when the pump is driven by the first driving amount and an amount of the liquid in the waste liquid tank is equal to or greater than a predetermined amount. The calculation unit calculates a cumulative amount of the liquid suctioned by the pump from the nozzle as the amount of the liquid in the waste liquid tank.