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:
Jun. 30, 2026
Filed:
May. 31, 2024
Seiko Epson Corporation, Tokyo, JP;
Masayuki Kawakami, Matsumoto, JP;
Yasuhiko Kosugi, Matsumoto, JP;
Tomohiro Matsubayashi, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejection apparatus includes a first print head receiving a drive signal and ejecting a liquid, a temperature information output circuit acquiring a first temperature signal indicating a temperature of the first print head and outputting a temperature information signal, and a state determination circuit determining a state of the print head based on the temperature information signal, wherein the first print head includes a first temperature detection unit outputting the first temperature signal, and the state determination circuit determines that the liquid stored in a first pressure chamber is short when the temperature of the first pressure chamber corresponding to the first temperature signal exceeds a first predetermined value, and determines that the liquid stored in the first pressure chamber is not short when the temperature of the first pressure chamber corresponding to the first temperature signal does not exceed the first predetermined value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile