Importance

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Abstract

A method of fusing and a fusing system are provided for a fusing member having a thermally stable FKM hydrofluoroelastomer surface for fusing thermoplastic resin toners which are susceptible to amines to a substrate in an electrostatographic printing apparatus with an amino functional oil having the formula: ##STR1## where 50.ltoreq.n.ltoreq.200, p is 1 to 5 and R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of alkyl and arylalkyl radicals having 1 to 18 carbon atoms, R.sub.4 is selected from the group consisting of alkyl and arylalkyl radicals having 1 to 18 carbon atoms and a polyorganosiloxane chain having 1 to 100 diorganosiloxy repeat units, and R.sub.5 is selected from the group consisting of hydrogen, alkyl and arylalkyl radicals having 1 to 18 carbon atoms, wherein at least 85% of the polyorgano amino functional siloxane chains have p equal to 1 and the ##STR2## groups are situated at random along the chain, said oil having predominantly monoamino functionality per active molecule to interact with said hydrofluoroelastomer surface to provide an interfacial barrier layer to said toner and a low surface energy film to release said toner from said surface.

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First Claim