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. 02, 2020
Filed:
Dec. 05, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Satoshi Azuma, Tokyo, JP;
Kazuhiko Sato, Tokyo, JP;
Kazuo Suzuki, Yokohama, JP;
Yoshinori Nakajima, Yokohama, JP;
Masataka Kato, Yokohama, JP;
Mitsutoshi Nagamura, Tokyo, JP;
Shin Genta, Yokohama, JP;
Shingo Nishioka, Yokohama, JP;
Sae Tabuchi, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An object of the present invention is to quickly correct a temperature sensor for an ejection head by, both efficiently and in a brief time, estimating a detected temperature of the temperature sensor for the ejection head in a case where the temperature of the ejection head of liquid becomes sufficiently close to an environment temperature. The temperature of a print headis detected by a diode sensorand the environment temperature is detected by a thermistor. Based on a change in the detected temperature of the diode sensorat the time of filling of ink for the print head, the detected temperature of the diode sensorin a case where the temperature of the print headbecomes close to the environment temperature is estimated as an estimated detected temperature. Based on a difference between the estimated detected temperature and the environment temperature, a correction value of the detected temperature of the diode sensoris set.