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. 24, 2008
Filed:
Nov. 23, 2005
Tamaki Sato, Kanagawa, JP;
Maki Hatta, Tokyo, JP;
Kazuhiro Asai, Kanagawa, JP;
Takumi Suzuki, Kanagawa, JP;
Tamaki Sato, Kanagawa, JP;
Maki Hatta, Tokyo, JP;
Kazuhiro Asai, Kanagawa, JP;
Takumi Suzuki, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for forming an ink jet recording head includes at least a step of forming an ink flow path pattern on a substrate by a photodecomposable positive type resist resin, a step of, once executing each of the steps of applying, exposing and baking thereon a nozzle-constituting resin layer which is a negative type resist containing an optical cation polymerization starting agent and having an epoxy resin as a chief component with respect to each of an ink flow path pattern and an ink discharge port pattern, collectively developing unexposed portions on the respective nozzle-constituting resin layers, and a step of removing the formed photodecomposable resin is minimized.