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:
Aug. 05, 2014
Filed:
Sep. 01, 2010
Hideo Kanno, Yokohama, JP;
Isao Hayashi, Kawasaki, JP;
Seiichiro Karita, Toda, JP;
Hiroshi Takabayashi, Atsugi, JP;
Takatsuna Aoki, Yokohama, JP;
Hideo Kanno, Yokohama, JP;
Isao Hayashi, Kawasaki, JP;
Seiichiro Karita, Toda, JP;
Hiroshi Takabayashi, Atsugi, JP;
Takatsuna Aoki, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a recording head that has a driving circuit performing driving by dividing a plurality of heaters into a plurality of blocks and supplying electric current on a block-by-block basis based on recording data; a constant current source applying a common bias current to each temperature sensor group obtained by dividing temperature sensors disposed in correspondence to each heater of a plurality of heaters into blocks; a voltage output circuit having a switching element that turns electric current supply to the temperature sensors of the selected temperature sensor group ON and OFF, and obtaining a voltage generated at both terminals of the selected temperature sensor by supplying an electric current to the temperature sensor; and an amplifier circuit amplifying the detection voltages.