(19)
(11) EP 0 985 535 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.08.2001 Bulletin 2001/35

(43) Date of publication A2:
15.03.2000 Bulletin 2000/11

(21) Application number: 99116295.9

(22) Date of filing: 18.08.1999
(51) International Patent Classification (IPC)7B41J 2/14
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 21.08.1998 JP 23524998
26.08.1998 JP 23982598
21.10.1998 JP 29977998
12.02.1999 JP 3459299
05.08.1999 JP 22206299

(71) Applicant: SEIKO EPSON CORPORATION
Shinjuku-ku Tokyo (JP)

(72) Inventors:
  • Miyata, Yoshinao, c/o Seiko Epson Corporation
    Suwa-shi, Nagano (JP)
  • Sakai, Shinri, c/o Seiko Epson Corporation
    Suwa-shi, Nagano (JP)
  • Furuhata, Yutaka, c/o Seiko Epson Corporation
    Suwa-shi, Nagano (JP)
  • Hashizume, Tsutomu, c/o Seiko Epson Corporation
    Suwa-shi, Nagano (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
80538 München
80538 München (DE)

   


(54) Ink jet recording head and ink jet recording apparatus comprising the same


(57) An ink jet recording head comprises a nozzle forming member (16) provided with a plurality of nozzle orifices (15) for jetting ink, a channel forming substrate (10) provided with a plurality of pressure generating chambers (12) communicated with the associated nozzle orifices (15), one face of which is bonded to the nozzle forming member (16), a plurality of piezoelectric elements (70) provided on an face of the channel forming substrate (10) which is opposed to the face bonded to the nozzle forming substrate (16) for causing pressure change to occur in the associated pressure generating chambers (12), and a reservoir forming member (20) bonded to the face of the channel forming substrate (10) on which the piezoelectric elements (70) are provided, the reservoir forming member (20) having a reservoir section (21) forming at least a part of a reservoir communicated with the pressure generating chambers (12) for supplying ink thereto and a piezoelectric element holding section (24) for defining a space in an area facing the piezoelectric elements (70) such an extent that motion of the respective piezoelectric elements (70) is exhibited while sealing the space hermetically.







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