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:
Aug. 22, 1995
Filed:
Oct. 30, 1992
Shuji Koyama, Kawasaki, JP;
Yukio Kawajiri, Yokohama, JP;
Makoto Shibata, Kawasaki, JP;
Manabu Sueoka, Yokohama, JP;
Toshio Suzuki, Inagi, JP;
Hisashi Yamamoto, Machida, JP;
Takumi Suzuki, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for manufacture of an ink jet head comprises the process of forming a head main body by providing a positive resist layer to constitute ink passages for a substrate having ink ejection pressure generating means and then a ceiling member therewith; forming a carbon-contained film for the surface where the ink discharging ports of the head main body are formed; conducting a fluoric plasma treatment given to the carbon-contained film by utilizing a hydrofluoride compound; and removing the positive resist layer. With this method, an F-C coupled water repellent film is formed on the discharging port formation surface of an ink jet recording head evenly with a desirable bonding capability to enhance the reliability of water repellency.