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:
Jan. 23, 2007
Filed:
Aug. 20, 2003
Fujio Akahane, Nagano, JP;
Nagamitsu Takashima, Nagano, JP;
Akiharu Kurebayashi, Nagano, JP;
Kazushige Hakeda, Nagano, JP;
Ryoji Uesugi, Nagano, JP;
Fujio Akahane, Nagano, JP;
Nagamitsu Takashima, Nagano, JP;
Akiharu Kurebayashi, Nagano, JP;
Kazushige Hakeda, Nagano, JP;
Ryoji Uesugi, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
There is disclosed a method of manufacturing a chamber formation plate of a liquid ejection head. The chamber formation plate includes a first region formed with at least recess portions to be pressure generating chambers communicated with nozzles from which liquid droplets are ejected by pressure generated in the pressure generating chambers. A metal plate and a forging die are provided. A reference part is provided on the metal plate. The reference part defines a relative position between the first region and the forging die. At least one deformation absorber is provided at a second region of the metal plate where is between the first region and the reference part. At least one plastic working is performed by the forging die, with respect to the first region to form at least the recess portions, while plastic deformation of the metal plate caused by the plastic working is absorbed by the deformation absorber.