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:
Aug. 10, 2004
Filed:
Nov. 27, 2002
Katsuhisa Sakuma, Chiba, JP;
SII Printek Inc., Chiba, JP;
Abstract
An ink chamber plate for defining a common ink chamber communicating with chambers is bonded onto a substrate on which the chambers are provided. The common ink chamber is provided with a section for partitioning the chambers and the common ink chamber and the partitioning section is provided with a plurality of interconnecting holes for defining the pump length, at an interval equivalent to the pump length, along the longitudinal direction of the chamber. A drive means generates a drive field in both the sidewalls defining the chamber such that a preliminary drive field for temporarily increasing the volume in the chamber has a drive time substantially equal to that of an ejection drive field for ejecting ink by temporarily reducing the volume in the chamber continuously to the preliminary drive field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile