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1. (WO1999004976) INK JET RECORDING HEAD AND INK JET RECORDER

Pub. No.:    WO/1999/004976    International Application No.:    PCT/JP1998/003297
Publication Date: Fri Feb 05 00:59:59 CET 1999 International Filing Date: Fri Jul 24 01:59:59 CEST 1998
IPC: B41J 2/14
B41J 2/16
Applicants: SEIKO EPSON CORPORATION

SAKAI, Shinri

MIYATA, Yoshinao

TAKAHASHI, Tetsushi

Inventors: SAKAI, Shinri

MIYATA, Yoshinao

TAKAHASHI, Tetsushi

Title: INK JET RECORDING HEAD AND INK JET RECORDER
Abstract:
An ink jet recording head and an ink jet recorder which are capable of preventing the occurrence of separation of and cracks in an end portion of an active section of a piezoelectric body. Specifically an ink jet recording head having a diaphragm constituting a part of a pressure generating chamber (12) communicating with an opening of a nozzle, a piezoelectric element (300) formed on the diaphragm, and an active section (320), which is provided in a region opposed to the pressure generating chamber (12) of the piezoelectric element (300), wherein the recording head is further provided with a vibration restriction portion for partially restricting at least a part of vibration of the part of the diaphragm which is in the vicinity of a boundary between the diaphragm and a circumferential wall of the pressure generating chamber (12).