(19)
(11) EP 0 775 580 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.10.1997 Bulletin 1997/43

(43) Date of publication A2:
28.05.1997 Bulletin 1997/22

(21) Application number: 96308587.3

(22) Date of filing: 27.11.1996
(51) International Patent Classification (IPC)6: B41J 2/14, B41J 2/05
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 27.11.1995 KR 4390695
10.10.1996 KR 4511896

(71) Applicant: Samsung Electronics Co., Ltd.
Suwon-City, Kyungki-do 441-742 (KR)

(72) Inventors:
  • Kim, Seung-jin
    Bundang-gu, Sungnam-City, Kyungki-do (KR)
  • Na, Kyoung-won
    Yongin-city, Kyungki-do (KR)
  • Lee, Woo-yong
    Kwonsun-gu, Suwon-city, Kyungki-do (KR)

(74) Representative: Musker, David Charles et al
R.G.C. Jenkins & Co. 26 Caxton Street
London SW1H 0RJ
London SW1H 0RJ (GB)

   


(54) Print head for bubble jet printer


(57) A print head for a bubble jet printer which enables gray scale printing is provided. The print head includes a substrate having a predetermined ink chamber into which ink is supplied, a nozzle plate having a plurality of nozzles disposed above the substrate, a plurality of electrodes attached to the substrate, and a heat generating unit having a plurality of heat generating subunits corresponding to the nozzle and each connected to the plurality of electrodes. Therefore, the size of discharged ink bubbles is controlled by changing the area heated by the heat generating subunits.






Search report