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:
Oct. 11, 2011
Filed:
Dec. 01, 2008
Applicants:
Keiji Tomizawa, Yokohama, JP;
Ken Tsuchii, Sagamihara, JP;
Shuichi Ide, Tokyo, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/05 (2006.01);
U.S. Cl.
CPC ...
Abstract
A reliable print head with improved reliability is less likely to be damaged by possible cavitation in ink inside a bubbling chamber. A plurality of ink supply paths through which the ink is supplied to the bubbling chamber are connected to the bubbling chamber. Communication positions where the plurality of ink supply paths communicate with the energy acting chamber are formed such that distances from a heater formation surface of the communication positions are different from each other along a direction orthogonal to the heater formation surface.