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:
Jul. 21, 1998
Filed:
Sep. 26, 1995
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink jet print head including a flow path forming member having pressure generating chambers, ink supply paths, and reservoirs, a nozzle plate for covering one side of the flow path forming member, the nozzle plate having nozzle openings communicated with the pressure generating chambers, a flexible wall member for varying the volumes of the pressure generating chambers, the flexible wall member covering the other side of the flow path forming member, and piezoelectric vibrating elements for elastically deforming the flexible wall member, the piezoelectric vibrating element being in contact with the flexible wall member. The flexible wall member includes low elasticity portions and high elasticity portions for transmitting expanding and contracting motions of the piezoelectric vibrating elements to the pressure generating chambers, one end of each high elasticity portion being extended to a region of the ink supply path.