(19)
(11) EP 0 665 106 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.05.1996 Bulletin 1996/22

(43) Date of publication A2:
02.08.1995 Bulletin 1995/31

(21) Application number: 95300563.4

(22) Date of filing: 30.01.1995
(51) International Patent Classification (IPC)6: B41J 2/05, B41J 2/14
(84) Designated Contracting States:
CH DE FR GB LI

(30) Priority: 31.01.1994 GB 9401758

(71) Applicant: NEOPOST LIMITED
Romford, Essex RM1 2AR (GB)

(72) Inventor:
  • Herbert, Raymond John
    Leigh-on-Sea, Essex SS9 3PP (GB)

(74) Representative: Loughrey, Richard Vivian Patrick et al
HUGHES CLARK & CO 114-118 Southampton Row
London WC1B 5AA
London WC1B 5AA (GB)


(56) References cited: : 
   
       


    (54) Ink jet printing machine


    (57) An ink jet printing device is formed from silicon or similar material. The device is formed on a first plate (10) having an ink duct groove (11) and ink jet nozzles (15) communicating with the duct (11). The groove is closed by a second plate (16) having diaphragms (23) formed integrally therein, the diaphragms (23) being opposed to passages (12) to the nozzles (15). The diaphragms are movable between positions in which the passages (12) are open and closed respectively by heating of the diaphragms or by heating liquid in a closed reservoir (21) behind each diaphragm.






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