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:
Dec. 03, 2002
Filed:
May. 18, 2001
Applicant:
Inventors:
Koji Matsuo, Fukuoka, JP;
Koji Ikeda, Hyogo, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/938 ;
U.S. Cl.
CPC ...
B41J 2/938 ;
Abstract
A plurality of ink droplets are discharged from the same nozzle during one printing cycle so as to perform multiple gray level printing. A group of driving pulses including an initial pulse P a first subsequent pulse P and a second subsequent pulse P in one printing cycle is supplied to an actuator. Time intervals t t and t between pulses are set to satisfy t ≦t <t ≦t with respect to the natural period t of the actuator.