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:
Dec. 27, 1994
Filed:
Jan. 29, 1993
Minoru Usui, Nagano, JP;
Takahiro Katakura, Nagano, JP;
Hideaki Sonehara, Nagano, JP;
Takahiro Naka, Nagano, JP;
Osamu Nakamura, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A method of manufacturing an ink jet head including the steps of: laminating a dry film photoresist 51 on an inner surface of a nozzle plate 2, the dry film photoresist being a photohardening resin; exposing the photoresist 51 with such energy as to half-harden the photoresist while superposing thereon a photomask M1 having a predetermined masking pattern; developing the thus exposed photoresist 51; laminating a photoresist 52; secondarily exposing the photoresists 51, 52 to form a partially hardened portion 5C; bonding an elastic plate on the portion 5C; and integrating the bonded plates while hardening them by heating.