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. 21, 2002
Filed:
Feb. 24, 1994
Kiyohiko Takemoto, Nagano, JP;
Shuichi Yamaguchi, Nagano, JP;
Akio Yamamori, Nagano, JP;
Yukiyoshi Icyu, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A photosensitive resin film is pressed onto the surface of nozzle plate , with one portion entering the inside of nozzle . Then, by ultraviolet radiation directed from the rear surface of nozzle plate , the inside the nozzle portion hardened as to form a plug , and at the same time the portion of photosensitive resin film directly above nozzle is hardened by the ultraviolet radiation to form an extensive portion , of a size at least that of nozzle diameter d, but no larger than 1.4 times that of nozzle diameter d. Finally, using the shape of extensive portion , an ink-repellent eutectoid plating coating layer is applied to the whole surface of nozzle plate with the exception of the edge of nozzle covered by the extensive portion, forming on that surface a water-repellent surface that does not cause deviation in the flight of ink droplets, while restricting the lining of the inside of nozzle with the coating layer.