Patent ID: 6010815
Filing Date: 2000-01-04
Classification: C08G,G03G

Abstract:
A process for electrophotographic copying, which comprises bringing a heated roll into contact with a toner image transferred on to a copying sheet to heat fix the toner image, wherein said roll has a surface formed of a silicone rubber or fluorine rubber, and wherein an anti-offsetting liquid is applied in a thin film on the surface thereof,wherein said anti-offsetting liquid comprises an organopolysiloxane having the following formula: ##STR15## wherein each R.sub.f represents a perfluoroalkyl group having 3 to 20 carbon atoms, which optionally contains at least one ether linkage therein; each R is the same or different and represents a monovalent hydrocarbon group having 1 to 10 carbon atoms; each Y represents a divalent organic group having 2 to 5 carbon atoms; a represents an integer of 1 or more and b represents an integer of 0 or more, provided that a and b satisfy 3a+3b+2=15 to 4,000; and c and d are each an integer of 0 to 3, and wherein said organopolysiloxane contains an organopolysiloxane having a molecular weight of 3,000 or less in an amount of 50 ppm or less.