(19)
(11) EP 0 693 379 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.03.1997 Bulletin 1997/11

(43) Date of publication A2:
24.01.1996 Bulletin 1996/04

(21) Application number: 95110506.3

(22) Date of filing: 05.07.1995
(51) International Patent Classification (IPC)6: B41J 2/045
(84) Designated Contracting States:
DE NL

(30) Priority: 08.07.1994 JP 157287/94

(71) Applicant: NEC CORPORATION
Tokyo (JP)

(72) Inventor:
  • Ogata, Hiroyuki, c/o NEC Corporation
    Tokyo (JP)

(74) Representative: VOSSIUS & PARTNER 
Siebertstrasse 4
D-81675 München
D-81675 München (DE)

   


(54) Ink jet recording head and method for manufacturing the same


(57) An ink jet recording head is formed by the steps of dipping a cavity pattern member alternately in a solution of an electrode material and in a solution of a piezoelectric material, with a drying step interposed therebetween, to form a unitary body of the cavity pattern member and a laminate of the electric material and the piezoelectric material, and removing the cavity pattern member from the unitary body to form an ink cavity inside the laminate. The ink cavity has a circular cross-section and has a dimensional accuracy. The piezoelectric films can apply a uniform pressure for jetting of ink. A simple process for manufacturing the ink jet recording head reduces the costs thereof.






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