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. 13, 2003
Filed:
Aug. 28, 1996
Kenji Aono, Kawasaki, JP;
Akihiko Shimomura, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method is provided for producing an ink jet recording head comprising a discharge opening for discharging an ink, a discharge opening forming member for forming the discharge opening, a liquid flow path communicating with the discharge opening, and a liquid discharge energy generating portion arranged within the liquid flow path for generating an energy to be utilized for discharging the ink from the discharge opening. The discharge opening forming member is dipped into a liquid which has ink-repellence and permeates into the discharge opening forming member. As a result, an ink-repellent treatment is effected on a peripheral portion of the discharge opening.