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:
Dec. 17, 2013
Filed:
Nov. 03, 2011
Hiroyuki Murayama, Kawasaki, JP;
Yoshinori Tagawa, Yokohama, JP;
Mitsuru Chida, Yokohama, JP;
Kazuhiro Asai, Kawasaki, JP;
Hiroyuki Murayama, Kawasaki, JP;
Yoshinori Tagawa, Yokohama, JP;
Mitsuru Chida, Yokohama, JP;
Kazuhiro Asai, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet recording head capable of maintaining ink supply capability for a long period of time includes a substrate provided with a plurality of energy generating elements and an ink supply port, and a flow path member which has a plurality of discharge ports, a plurality of ink flow paths in communication with the plurality of discharge ports, and a common liquid chamber in communication with the plurality of ink flow paths. The common liquid chamber is divided into a discharge port area and a drainage port area, and the ink flows into the discharge port area through a filter. In the case where a smallest diameter among the diameters of the discharge ports and the diameters of the ink flow paths is denoted by A and a largest diameter of openings of the filter is denoted by B, A≧B is satisfied.