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:
Sep. 10, 2002
Filed:
Nov. 23, 1998
Yuji Chino, Suwa, JP;
Katsuji Arakawa, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink jet head which is -prevented from corrosion by ink, and an ink jet recording apparatus using the same. An ink-resistant thin film ( ) made of Ti, a Ti compound, or Al O is formed on the surface of recess portions ( to ) of a substrate in which a reservoir ( ) for reserving ink, orifices ( ) and pressure chambers ( ) are formed. Since this ink-resistant thin film ( ) is formed, corrosion can be restrained without reducing printing quality, without necessity to change the component/composition of the ink and the material of the head, and with little change of its manufacturing process, even if there is a fear that the head material may be corroded by the ink.