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. 12, 2005
Filed:
Nov. 29, 2001
Applicants:
Masao Kato, Tochigi, JP;
Fumihiro Gotoh, Kanagawa, JP;
Akitoshi Yamada, Kanagawa, JP;
Daisaku Ide, Tokyo, JP;
Inventors:
Masao Kato, Tochigi, JP;
Fumihiro Gotoh, Kanagawa, JP;
Akitoshi Yamada, Kanagawa, JP;
Daisaku Ide, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J002/165 ;
U.S. Cl.
CPC ...
Abstract
The present invention allows a buffer portion to sufficiently restrain the vibration of ink in a print head. To achieve this, the buffer portion is disposed close to a channel between a common chamber and an ejection opening and is filled with at least one bubble, and then excess of the at least one bubble is removed through the ejection opening.