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:
Feb. 20, 2018
Filed:
Jun. 23, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Junri Ishikura, Tokyo, JP;
Yo Watanabe, Yokohama, JP;
Norihiko Ochi, Kawasaki, JP;
Hidehiko Fujimura, Hachioji, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01); B41J 2/16 (2006.01);
U.S. Cl.
CPC ...
B41J 2/1433 (2013.01); B41J 2/14209 (2013.01); B41J 2/162 (2013.01); B41J 2/1629 (2013.01); B41J 2/1643 (2013.01); B41J 2002/14475 (2013.01); B41J 2202/11 (2013.01);
Abstract
Provided is a liquid ejection head capable of stably ejecting a liquid at a practical liquid droplet velocity without separating minute liquid droplets before ejection of main liquid droplets in the case of reducing the amount of liquid droplets by reducing a nozzle diameter of the liquid ejection head. In a liquid ejection head including a nozzle for ejecting a liquid, a recess portion recessed relative to a nozzle inner wall surface is formed on a nozzle inner wall in a region having a nozzle inner diameter of 15 μm or less.