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. 02, 2010
Filed:
Mar. 21, 2008
Hideyuki Ogawa, Nagano-ken, JP;
Koichi Saito, Nagano-ken, JP;
Nagamitsu Takashima, Nagano-ken, JP;
Katsumi Motojima, Nagano-ken, JP;
Katsunori Ono, Nagano, JP;
Hideyuki Ogawa, Nagano-ken, JP;
Koichi Saito, Nagano-ken, JP;
Nagamitsu Takashima, Nagano-ken, JP;
Katsumi Motojima, Nagano-ken, JP;
Katsunori Ono, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A method of fabricating a liquid ejection head is provided. The method includes preparing a first die including projected streak portions aligned in parallel by a predetermined pitch and gap portions formed between the adjacent projected streak portions. The first die is adapted to form groove-like recess portions by pressing the projected streak portions to a metal plate. The method further includes preparing a second die for supporting the metal plate to which the projected streak portions of the first die are pressed. Each of the projected streak portions includes: an inner wall forming portion for forming an inner wall of the corresponding groove-like recess portion extending in a depth direction of the corresponding groove-like recess portion; a connecting face portion; and an inclined face portion, continuous via the connecting face portion to the inner wall forming portion, for forming a bottom portion of the corresponding groove-like recess portion into a substantially V-like shape.