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. 03, 2008
Filed:
Nov. 12, 2004
Takatsugu Wada, Kanagawa, JP;
Masatake Akaike, Kanagawa, JP;
Takatsugu Wada, Kanagawa, JP;
Masatake Akaike, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a method of manufacturing a liquid discharge head, liquid in a pressure generation chamber is pressurized by a piezoelectric driving force of a piezoelectric element, and is discharged from a nozzle communicated with the pressure generation chamber. The method is characterized by the steps of providing a flow passage substrate incorporating the pressure generation chamber, anodically joining a diaphragm to the flow passage substrate, forming electrode layers and a piezoelectric film of the piezoelectric element on the diaphragm, and crystallizing the piezoelectric film during or after the lamination at a crystallization temperature not higher than a strain point of the diaphragm.