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:
Mar. 28, 2006
Filed:
Jun. 12, 2003
Takeshi Kameda, Tenri, JP;
Hiroshi Ishii, Osaka, JP;
Takeshi Kameda, Tenri, JP;
Hiroshi Ishii, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An inkjet printhead and an inkjet image forming apparatus capable of achieving improved ink jetting performance as a result of causing partition(s) partitioning ink chamber(s) of inkjet printhead(s) to be made up of piezoelectric member(s) for which rate(s) of change of electromechanical coupling coefficient(s) with respect to temperature display negative characteristics, or causing partition(s) partitioning ink chamber(s) of inkjet printhead(s) to be made up of piezoelectric member(s) for which rate(s) of change of electromechanical coupling coefficient(s) with respect to temperature display positive characteristics and controlling electrical energy supplied to such piezoelectric member(s) based on image data and ink temperature.