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. 03, 2017
Filed:
May. 28, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid discharge head, the liquid discharge head including a liquid chamber and two electrode pins that are inserted in the liquid chamber from an upper portion of the liquid chamber. The two electrode pins are used to detect a remaining amount of liquid inside the liquid chamber on a basis of a communication state between the two electrode pins and are disposed on a centerline that is a line extending through a center of an upper surface of the liquid chamber in a moving direction of the liquid discharge head or a single electrode pin is disposed on each side of the centerline with the centerline interposed in between. An expression X≧Z/0.4 is satisfied, where Xis an interval between the two electrode pins and Zis a difference in projection lengths of the two electrode pins in the liquid chamber.