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:
Jul. 21, 2026
Filed:
Feb. 26, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Takuma Kodoi, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A printing head includes printing element boards which are in fluid communication with each other through a liquid chamber, includes an inlet port and an outlet port, and is arranged such that the ink circulates inside the liquid chamber, and inside the liquid chamber, the ink circulates in nozzle portions in the printing element boards. An inspection apparatus includes: the printing head; an inlet passage; an outlet passage; an ink circulatory system; an inlet temperature sensor; and an outlet temperature sensor, and estimates a temperature distribution of the printing head from measured values of the inlet temperature sensor and the outlet temperature sensor and calculates calibration values of the temperature sensors of the respective printing element boards.