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:
May. 14, 2013
Filed:
Feb. 14, 2007
Satoshi Ibe, Yokohama, JP;
Shuji Koyama, Kawasaki, JP;
Yoshiaki Suzuki, Kawasaki, JP;
Hiroto Komiyama, Tokyo, JP;
Satoshi Ibe, Yokohama, JP;
Shuji Koyama, Kawasaki, JP;
Yoshiaki Suzuki, Kawasaki, JP;
Hiroto Komiyama, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method can produce a liquid discharge head including a liquid discharge energy generating element, a liquid discharge port, a liquid flow path, an electric circuit for driving the liquid discharge energy generating element, a first electrode pad for exchanging electrical signals with the exterior and a second electrode pad for testing the electric circuit. The method includes preparing a substrate provided with a conductive layer for forming the first electrode pad and the second electrode pad, forming a protective layer directly on the second electrode pad, after forming the protective layer, forming a metal layer by an electro less plating method on the conductive layer, removing the protective layer after the metal layer is formed, and providing a layer comprised of a resin on the second electrode pad after the protective layer is removed.