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:
Apr. 29, 2008
Filed:
Apr. 15, 2005
Tatsuo Furukawa, Kanagawa, JP;
Hiroyuki Maru, Kanagawa, JP;
Takashi Yoshida, Tokyo, JP;
Kazuki Ohta, Kanagawa, JP;
Tatsuo Furukawa, Kanagawa, JP;
Hiroyuki Maru, Kanagawa, JP;
Takashi Yoshida, Tokyo, JP;
Kazuki Ohta, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A printing head which outputs an output from a sensor device provided for monitoring various condition of a printing head as digital data, and a printing apparatus using the printing head. The output from the device for detecting condition of the printing head, e.g., information indicative of a substrate temperature, a resistance value of an electrothermal transducer, an ON resistance value of a power transistor which drives the electrothermal transducer and the like is digitized on the substrate, and outputted as digital information to the outside. Further, the digital information is outputted by utilizing a clock signal and a latch signal used for transferring print data to the printing head. This does not increase the number of wires and the area of the substrate.