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:
Jan. 13, 2015
Filed:
Sep. 14, 2012
Kei Kosaka, Tokyo, JP;
Minoru Teshigawara, Saitama, JP;
Atsushi Sakamoto, Yokohama, JP;
Takeshi Murase, Yokohama, JP;
Yoshiyuki Honda, Kawasaki, JP;
Kei Kosaka, Tokyo, JP;
Minoru Teshigawara, Saitama, JP;
Atsushi Sakamoto, Yokohama, JP;
Takeshi Murase, Yokohama, JP;
Yoshiyuki Honda, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided an inkjet printing apparatus which can output a stable image without density unevenness by performing appropriate drive control to print elements based upon an appropriate representative temperature of a chip whatever image data is printed on a print medium. For this purpose, detection temperatures of a plurality of temperature sensors are lined up in high temperature order, and coefficients by which the respective detection temperatures are multiplied, are determined to be associated with that order at the lining-up, determining a representative temperature by the weighted average method. The common drive pulse associated with to the individual chip based upon the representative temperature thus obtained, to be applied thereto. Thereby even if temperature variations of print elements on the chip exist, it is possible to appropriately control the entire chip in temperature.