(19)
(11) EP 0 435 516 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.04.1992 Bulletin 1992/14

(43) Date of publication A2:
03.07.1991 Bulletin 1991/27

(21) Application number: 90313581.2

(22) Date of filing: 13.12.1990
(51) International Patent Classification (IPC)5: G03G 15/12, G03G 15/20
(84) Designated Contracting States:
BE CH DE ES FR GB IT LI LU NL SE

(30) Priority: 28.12.1989 US 457317

(71) Applicant: AM INTERNATIONAL INCORPORATED
Chicago Illinois 60606-1265 (US)

(72) Inventors:
  • Duchesne, Mark F.
    Dayton, Ohio 45459 (US)
  • Gaspar, Richard A.
    Centerville, Ohio 45458 (US)

(74) Representative: Warren, Anthony Robert et al
BARON & WARREN, 18 South End, Kensington
London W8 5BU
London W8 5BU (GB)


(56) References cited: : 
   
       


    (54) Dryer-fuser apparatus and method for high speed electrophotographic printing device


    (57) A dryer-fuser apparatus (100) and method are provided to evaporate volatile, flammable carrier liquid from and to fuse solids color-imparting particles to a travelling web of paper (W) in a high speed electrophotographic printing process. Volatiles from the dryer are vented to a catalytic converter (124), with heat recovered from the catalytic converter being recycled to supply heat to the dryer-fuser (100). An electric resistance heater (122) may be used to supply heat during system start up and during such times when auxiliary heat is required. Regulation of the amount of venting is provided by a damper (134) and is dependent upon the concentration of flammable volatiles present in the dryer.






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