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. 21, 2001
Filed:
Jul. 09, 1999
Takashi Aihara, Chiba, JP;
Tohru Naganuma, Kanagawa, JP;
Makoto Ando, Tokyo, JP;
Kenji Okamoto, Tokyo, JP;
Koichiro Kishima, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A method of manufacturing a printing head which can prevent ink, diluent, and a mixed solution thereof from adhering to and spreading about a portion of the print head around the nozzle is disclosed. The method comprises forming a hydrophobic film on a surface of a nozzle member, forming a first nozzle into which a discharge medium is introduced, and a second nozzle into which a metering medium is introduced, in the nozzle member. The first nozzle has a first orifice on the surface, and the second nozzle has a second orifice also on the surface. The first and second orifices are located so as to ooze the metering medium from the second orifice to the first orifice through the surface. An additional step of removing the hydrophobic film from a portion of the surface between the first and second orifices to define a groove is included.