Mercapto functional polyorganosiloxane release agents for fusers

Details Mercapto functional polyorganosiloxane release agents for fusers Mercapto functional polyorganosiloxane release agents for fusers

1974-07-24

1977-06-14

Smith, Ronald H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

148 624, 427194, 427374R, B05D 312, C23F 700, G03G 1320

Patent

active

040298272

ABSTRACT:
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 thickness 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.

REFERENCES:
patent: 2719165 (1955-09-01), Cooper
patent: 3170940 (1965-02-01), Johnston
patent: 3346405 (1967-10-01), Viventi
patent: 3669707 (1972-06-01), Donnelly et al.
patent: 3810776 (1974-05-01), Banks et al.
patent: 3848305 (1974-11-01), Jachimiak

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