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:
Jun. 14, 2005
Filed:
Feb. 21, 2003
Applicants:
Keisuke Shimamoto, Kumamoto, JP;
Makio Nobayashi, Kumamoto, JP;
Inventors:
Keisuke Shimamoto, Kumamoto, JP;
Makio Nobayashi, Kumamoto, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J002/17 ;
U.S. Cl.
CPC ...
Abstract
The ink-jet head of this invention includes a nozzle plate in which a nozzle is formed; a pressure chamber part in which a pressure chamber charged with an ink is formed; an ink passage part in which an ink supplying passage for supplying the ink to the pressure chamber is formed; a piezoelectric actuator for applying a pressure to the pressure chamber for discharging the ink from the nozzle; a damper wall for separating the ink supplying passage from an air chamber; and a communicating hole for communicating the air chamber with the atmospheric air.