(19)
(11) EP 0 389 229 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.05.1991 Bulletin 1991/18

(43) Date of publication A2:
26.09.1990 Bulletin 1990/39

(21) Application number: 90302946.0

(22) Date of filing: 19.03.1990
(51) International Patent Classification (IPC)5: G03G 15/044, G03G 17/00
(84) Designated Contracting States:
DE FR GB

(30) Priority: 22.03.1989 JP 69665/89
14.04.1989 JP 95749/89
12.09.1989 JP 236156/89
18.09.1989 JP 241252/89

(71) Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Kadoma-shi, Osaka-fu, 571 (JP)

(72) Inventors:
  • Matsumoto, Satoshi
    Hirakata-shi (JP)
  • Nakata, Shinobu
    Takatsuki-shi (JP)
  • Ishihara, Hideshi
    Takatsuki-shi (JP)
  • Terada, Hiroshi
    Ikoma-shi (JP)

(74) Representative: Sorrell, Terence Gordon et al
Fitzpatricks, Cardinal Court, 23, Thomas More Street
London E1 9YY
London E1 9YY (GB)


(56) References cited: : 
   
       


    (54) Image forming apparatus


    (57) An image forming apparatus includes a developer layer former (3) which charges developer to have a predetermined polarity in a developer unit (4) and forms a uniform thin layer of the developer on a developer carrier (1), an ion irradiator (6) which irradiates ions towards the developer on the developer carrier (1) partly so as to form a reversely charged latent image thereon in accordance with recording signals (5), and a transfer unit (8) which transfers the part of the developer on the developer carrier (1) corresponding to the latent image onto a recording medium (9) directly.






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