Mercapto functional polyorganosiloxane release agents for...

Details Mercapto functional polyorganosiloxane release agents for... Mercapto functional polyorganosiloxane release agents for...

G - Physics

03

G

117/69, 314/38.5

G03G 15/20 (2006.01)

Patent

CA 1091991

ABSTRACT OF THE DISCLOSURE Polyorgano siloxanes having functional mercapto groups are applied to a heated fuser member in an electrostatic reproducing apparatus to form thereon a thermally stable, renewable, self-cleaning layer having superior toner release properties for electroscopic thermoplastic resin toners. The polyorgano siloxane fluids having functional mercapto groups interact with the fuser member in such a manner as to form an interfacial barrier at the surface of the fuser member while leaving an unreacted, low surface energy release fluid as an outer layer or film. The interfacial barrier is strongly attached to the fuser member surface and prevents toner material from contacting the outer surface of the fuser member. The material on the surface of the fuser member is of minimal thick- ness and thereby represents a minimal thermal barrier. The polyorgano siloxanes having mercapto functionality have also been effectively demonstrated as excellent release agents for the reactive types of toners having functional groups thereon.

228550

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