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:
Feb. 16, 1988
Filed:
Jun. 10, 1986
Makoto Matsuzaki, Shiojiri, JP;
Seiko Epson Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink-jet recording head formed from a base and a vibrating plate attached to the base with the surfaces therebetween defining a plurality of ink passageways terminating in a nozzle at one end of the head is provided. The base and the plate are both formed from a synthetic resin with the surfaces activated by a surface treatment to increase the polar groups and unsaturated bonds to increase the wetting property. Surface treatment includes treating with a K.sub.2 Cr.sub.2 O.sub.7 --H.sub.2 SO.sub.4 or H.sub.2 SO.sub.4 --SO.sub.3 solution, SO.sub.3 gas, ultraviolet rays, plasma, corona discharge, electron beam, or flame. A process for making the head is also disclosed.