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. 10, 2026
Filed:
Mar. 08, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Mineo Shimotsusa, Tokyo, JP;
Nobuyuki Hirayama, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To make it possible to detect a difference in a change of temperature of liquid accompanying ejection of ink between normal ejection and ejection failure, a liquid ejection apparatus includes a driving unit configured to drive a heating element; and a detection unit configured to detect an ejection state of a liquid ejection head based on an output from a temperature detection element provided in the liquid ejection head. The liquid ejection head includes, in correspondence to the ejection port, a foaming chamber communicating with the ejection port; a first heating element for ejecting liquid by providing thermal energy to liquid in the foaming chamber; the temperature detection element for detecting temperature in the foaming chamber; and a second heating element generating thermal energy and arranged closer to the temperature detection element than the first heating element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile