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. 07, 2009
Filed:
Mar. 31, 2006
Hideyuki Nishida, Yokohama, JP;
Hideyuki Nishida, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A voltage supplied to each printing element can be stabilized even when a number of concurrently driven printing elements varies. A printhead with a plurality of printing elements includes a driving circuit for applying a predetermined voltage to each printing element according to a pulse signal defining a drive of a printing element inputted to the printhead. More specifically, the driving circuit is provided with a set voltage generation section for generating the predetermined voltage according to a setting signal inputted to the printhead. The section receives as the setting signal information on the number of concurrently driven printing elements, and the predetermined voltage applied to each printing element is set so as to have a constant value even when the number of concurrently driven printing elements varies.