(19)
(11) EP 0 589 685 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.06.1994 Bulletin 1994/25

(43) Date of publication A2:
30.03.1994 Bulletin 1994/13

(21) Application number: 93307498.1

(22) Date of filing: 22.09.1993
(51) International Patent Classification (IPC)5: D02J 13/00, H05B 6/14
(84) Designated Contracting States:
DE FR GB

(30) Priority: 24.09.1992 JP 277725/92

(71) Applicant: SHINKO DENKI KABUSHIKI KAISHA
Tokyo-to (JP)

(72) Inventor:
  • Kato, Hiroyoshi
    Taki-gun, Mie-ken (JP)

(74) Representative: Calderbank, Thomas Roger et al
MEWBURN ELLIS York House 23 Kingsway
London WC2B 6HP
London WC2B 6HP (GB)


(56) References cited: : 
   
       


    (54) Hot roller with a built-in motor


    (57) A hot roller with a built-in motor in which the whole length thereof is shortened and the heat efficiency is improved. In the hot roller, a heater coil (10) is fixedly fitted onto a surface of a motor outer housing, and a motor rotor shaft (7) of the motor is connected to a hot roller rotary shaft (12) of a hot roller rotor (11, 11A, 11B) formed so as to cover the heater coil (10). In this case, it is preferable that a ceramic bearing is used as a bearing (8a, 8b) of the motor rotor shaft (7) so as to perform oil-mist lubrication, and that heat pipes (15) are provided in the hot roller rotor (11, 11A, 11B).






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