US5281506A
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US
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Method of making a fuser member having a polyorganosiloxane grafted onto a fluoroelastomer and method of fusing
Assignee: Xerox Corp
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Filing: 1992-05-19
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Granted: 1994-01-25
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Expires: 2012-05-19
Abstract
Abstract A fuser member comprising a supporting substrate having an outer layer of a cured fluoroelastomer and having a thin surface layer of a polyorganosiloxane having been grafted to the surface of said cured fluoroelastomer in the presence of a dehydrofluorination agent for the fluoroelastomer and from a polyorganosiloxane having reactive functionality and the formula: ##STR1## where R is an alkyl, alkenyl or aryl group having less than 19 carbon atoms or an aryl group substituted with an alkyl or alkenyl group having less than 19 carbon atoms, the functional group A is hydrogen, hydroxy, alkoxy, amino, epoxy, vinyl, acrylic or mercapto, and n is 2 to 350.
Inventors
- 👤 Santokh S. Badesha
- 👤 David H. Pan
- 👤 William M. Prest, Jr.
- 👤 Arnold W. Henry
- 👤 George J. Heeks
- 👤 Louis D. Fratangelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:13
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; C; C08; C08G; C08G81/00; C08G81/02; C08G81/024; C09; C09D; C09D183/00; C09D183/10; C09D187/00; C09D187/005; G03G15/2017; G03G15/2025; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1386; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
136 words
The method of fusing a thermoplastic resin toner image to a substrate comprising forming a film of a polymeric release agent on the surface of a heated fuser member, said fuser member comprising a supporting substrate having an outer layer of a cured fluoroelastomer and having a thin surface layer of a polyorganosiloxane having been grafted to the surface of said cured fluoroelastomer in the presence of a dehydrofluorination initiator for the fluoroelastomer and from a polyorganosiloxane having reactive functionality and the formula: ##STR5## where R is an alkyl, alkenyl or aryl group having less than 19 carbon atoms or an aryl group substituted with an alkyl or alkenyl group having less than 19 carbon atoms, the functional group A is hydrogen, hydroxy, alkoxy, amino, epoxy, vinyl, acrylic or mercapto, and n is 2 to 350.
Claim 2
Independent Claim
136 words
The method of fusing a thermoplastic resin toner image to a substrate comprising forming a film of a polymeric release agent on the surface of a heated fuser member, said fuser member comprising a supporting substrate having an outer layer of a cured fluoroelastomer and having a thin surface layer of a polyorganosiloxane having been grafted to the surface of said cured fluoroelastomer in the presence of a dehydrofluorination initiator for the fluoroelastomer and from a polyorganosiloxane having reactive functionality and the formula: ##STR5## where R is an alkyl, alkenyl or aryl group having less than 19 carbon atoms or an aryl group substituted with an alkyl or alkenyl group having less than 19 carbon atoms, the functional group A is hydrogen, hydroxy, alkoxy, amino, epoxy, vinyl, acrylic or mercapto, and n is 2 to 350.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein said fluoroelastomer is selected from the group consisting of poly(vinylidene fluoride-hexafluoropropylene) and poly(vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene).
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein said thin surface layer is from about 5 to about 100 nanometers thick.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein said dehydrofluorination agent is selected from the group consisting of inorganic bases and peroxides.
Claim 6
Dependent Claim
26 words
The method of claim 4 wherein said agent is selected from the group consisting of alkali and alkaline earth metal bases, hydrogen peroxide and benzoyl peroxide.
Claim 7
Dependent Claim
13 words
The method of claim 1 wherein said supporting substrate is a cylindrical sleeve.
Claim 8
Dependent Claim
33 words
The method of claim 1 wherein said polyorganosiloxane is covalently bonded to said cured fluoroelastomer and is sufficiently thin as to have substantially no affect on the physical properties of the cured fluoroelastomer.
Claim 9
Dependent Claim
19 words
The method of claim 6 wherein said member is a pressure roll, fuser roll or release agent donor roll.
Claim 10
Dependent Claim
12 words
The method of claim 1 wherein n is from 60 to 80.
Claim 11
Independent Claim
119 words
The method of making a fuser member comprising providing a supporting substrate having an outer layer of a cured fluoroelastomer, preparing a solvent solution of a dehydrofluorinating agent containing a polyorganosiloxane having reactive functionality and the formula: ##STR6## where R is an alkyl, alkenyl or aryl group having less than 19 carbon atoms or an aryl group substituted with an alkyl or alkenyl group having less than 19 carbon atoms, the functional group A is hydrogen, hydroxy, alkoxy, amino, epoxy, vinyl, acrylic or mercapto, and n is 2 to 350, contacting said cured fluoroelastomer with said solution under conditions including step curing at increasingly elevated temperatures to form a thin surface layer of the polyorganosiloxane grafted to said fluoroelastomer.
Claim 12
Independent Claim
119 words
The method of making a fuser member comprising providing a supporting substrate having an outer layer of a cured fluoroelastomer, preparing a solvent solution of a dehydrofluorinating agent containing a polyorganosiloxane having reactive functionality and the formula: ##STR6## where R is an alkyl, alkenyl or aryl group having less than 19 carbon atoms or an aryl group substituted with an alkyl or alkenyl group having less than 19 carbon atoms, the functional group A is hydrogen, hydroxy, alkoxy, amino, epoxy, vinyl, acrylic or mercapto, and n is 2 to 350, contacting said cured fluoroelastomer with said solution under conditions including step curing at increasingly elevated temperatures to form a thin surface layer of the polyorganosiloxane grafted to said fluoroelastomer.
Claim 13
Dependent Claim
28 words
The method of claim 10 wherein the treated cured fluoroelastomer is subsequently removed from the solution; washed with solvent to remove unreacted material and dried to remove solvent.
Claim 14
Dependent Claim
20 words
The method of claim 10 wherein said fluoroelastomer is selected from the group consisting of poly(vinylidene fluoride-hexafluoropropylene) and poly(vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene).
Claim 15
Dependent Claim
19 words
The method of claim 10 wherein said thin surface layer is from about 5 to about 100 nanometers thick.
Claim 16
Dependent Claim
20 words
The method of claim 10 wherein said dehydrofluorination agent is selected from the group consisting of inorganic bases and peroxides.
Claim 17
Dependent Claim
26 words
The method of claim 14 wherein said agent is selected from the group consisting of alkali and alkaline earth metal bases, hydrogen peroxide and benzoyl peroxide.
Claim 18
Dependent Claim
13 words
The method of claim 10 wherein said supporting substrate is a cylindrical sleeve.
Claim 19
Dependent Claim
33 words
The method of claim 10 wherein said polyorganosiloxane is covalently bonded to said cured fluoroelastomer and is sufficiently thin as to have substantially no affect on the physical properties of the cured fluoroelastomer.
Claim 20
Dependent Claim
19 words
The method of claim 14 wherein said member is a pressure roll, fuser roll or release agent donor roll.
Claim 21
Dependent Claim
12 words
The method of claim 10 wherein n is from 60 to 80.
References Cited (Backward Citations)
US5157445A
Cited
US5166031A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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