(19)
(11) EP 0 657 789 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.03.1996 Bulletin 1996/10

(43) Date of publication A2:
14.06.1995 Bulletin 1995/24

(21) Application number: 94309235.3

(22) Date of filing: 09.12.1994
(51) International Patent Classification (IPC)6G03G 15/20
(84) Designated Contracting States:
DE FR GB

(30) Priority: 10.12.1993 US 164853
29.09.1994 US 314759
29.09.1994 US 315004
29.09.1994 US 315006

(71) Applicant: XEROX CORPORATION
Rochester New York 14644 (US)

(72) Inventors:
  • Henry, Arnold W.
    Pittsford, NY 14534 (US)
  • Fratangelo, Louis D.
    Fairport, NY 14450 (US)
  • Badesha, Santokh S.
    Pittsford, NY 14534 (US)
  • Eddy, Clifford O.
    Webster, NY 14581-1321 (US)
  • Fraser, David
    Rochester, NY 14609 (US)
  • Seanor, Donald A.
    Pittsford, NY 14534 (US)
  • Heeks, George J.
    Rochester, NY 14617 (US)
  • Kaplan, Samuel
    Webster, NY 14568-9787 (US)
  • Chow, Che C.
    Penfield, NY 14526 (US)
  • Pan, David H.
    Rochester, NY 14625 (US)

(74) Representative: Johnson, Reginald George 
Rank Xerox Ltd Patent Department Parkway
Marlow Buckinghamshire SL7 1YL
Marlow Buckinghamshire SL7 1YL (GB)


(56) References cited: : 
   
       


    (54) Fusing system, method of fusing and release agent for the fusing system in an electrostatographic printing apparatus


    (57) The method of fusing thermoplastic resin toner images (14) to a substrate (12) in a fuser including a heated thermally stable FKM hydrofluoroelastomer fusing surface (2) at elevated temperature prepared in the absence of anchoring sites for a release agent of heavy metals, heavy metal oxides, or other heavy metal compounds forming a film of a fluid release agent on the elastomer surface (2) of an amino functional oil having the formula :


    where 50≦n≧200, p is 1 to 5, and R1' R2 and R3 are alkyl or arylalkyl radicals having 1 to 18 carbon atoms, R4 is an alkyl or arylalkyl radicals having 1 to 18 carbon atoms and a polyorganosiloxane chain having 1 to 100 diorganosiloxy repeat units, and R5 is hydrogen, alkyl or arylalkyl radicals having 1 to 18 carbon atoms,the oil having sufficient amino functionality per active molecule to interact with the hydrofluoroelastomer surface in the absence of a heavy metal and heavy metal anchoring sites to provide an interfacial barrier layer to the toner and a low surface energy film to release the toner from the surface ; contacting the toner image on the substrate with the filmed heated elastomer surface to fuse the toner iage to the substrate and permitting the toner to cool.







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