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:
Nov. 29, 2005
Filed:
Aug. 05, 2003
Applicants:
Kouji Ikeda, Hyogo, JP;
Koichi Baba, Osaka, JP;
Masaichiro Tatekawa, Osaka, JP;
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J029/38 ;
U.S. Cl.
CPC ...
Abstract
An ink jet recording apparatus includes an ink jet head, a reference pulse generation circuit, and switch circuits. The reference pulse generation circuit is a circuit for generating, at a predetermined cycle, a first reference pulse Pbased on which a driving pulse is produced. A preliminary pulse Pis for vibrating an ink meniscus in the tip portion of a nozzle. A discharge pulse Pis for discharging an ink droplet through the nozzle. The switch circuits selectively input, to piezoelectric actuators, the preliminary pulse Pand the discharge pulse Pgenerated by the reference pulse generation circuit.