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:
Nov. 21, 2023
Filed:
Feb. 18, 2022
Canon Kabushiki Kaisha, Tokyo, JP;
Yosuke Takagi, Kanagawa, JP;
Chiaki Muraoka, Saitama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image recording apparatus includes: a liquid ejection cartridge unit that ejects ink droplets and includes a liquid chamber that stores liquid, and a first and a second electrode pins inserted in the liquid chamber; an application portion that applies a voltage between the first and the second electrode pins; and a detection portion that includes a detection resistance to which a voltage is applied by the application portion and detects a voltage value or a current value. When the application portion applies a voltage, the detection portion detects the voltage value or the current value so that the amount of liquid remaining in the liquid chamber is detected. At least one of the determination threshold value of the amount of the liquid in the liquid chamber, the applied voltage value, or the detection resistance value is set at intervals based on the cumulative application time of the voltage.