US4264181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-filled nucleophilic addition cured elastomer fuser member
Assignee: Xerox Corp
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Filing: 1979-04-04
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Granted: 1981-04-28
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Expires: 1999-04-04
Abstract
Abstract A fuser member and method of fusing or fixing thermoplastic resin powder images to a substrate in a fuser assembly of the type wherein a polymeric release agent having functional groups is applied to the surface of the fuser member is disclosed. The fuser member comprises a base member having an elastomer surface with metal-containing filler therein, said elastomer being cured with a nucleophilic addition curing agent. Exemplary of such a fuser member is an aluminum base member coated with poly(vinylidene fluoride-hexafluoropropylene) copolymer cured with a bisphenol curing agent
Inventors
- 👤 James A. Lentz
- 👤 Paul D. DePalma
- 👤 Rabin Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:01
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057
Claims Analysis
Total Claims: 56
Claim 1
Independent Claim
77 words
A fuser member for fixing thermoplastic resin powder images to a substrate in a fuser assembly of the type wherein a polymeric release agent having functional groups is applied to the surface of the fuser member, the fuser member comprising a base member having an elastomer working surface with metal-containing filler dispersed therein in an amount sufficient to interact with a polymeric release agent having functional groups, said elastomer being cured with a nucleophilic addition curing agent.
Claim 2
Dependent Claim
77 words
A fuser member for fixing thermoplastic resin powder images to a substrate in a fuser assembly of the type wherein a polymeric release agent having functional groups is applied to the surface of the fuser member, the fuser member comprising a base member having an elastomer working surface with metal-containing filler dispersed therein in an amount sufficient to interact with a polymeric release agent having functional groups, said elastomer being cured with a nucleophilic addition curing agent.
Claim 3
Dependent Claim
17 words
The fuser member of claim 1 wherein the nucleophilic addition curing agent is a bisphenol crosslinking agent.
Claim 4
Dependent Claim
18 words
The fuser member of claim 2 wherein the nucleophilic addition curing agent further comprises an organophosphonium salt accelerator.
Claim 5
Dependent Claim
16 words
The fuser member of claim 1 wherein the nucleophilic addition curing agent is a diamine carbamate.
Claim 6
Dependent Claim
13 words
The fuser member of claim 1 wherein the metal-containing filler is a powder.
Claim 7
Dependent Claim
16 words
The fuser member of claim 1 wherein the metal-containing filler is in the form of flakes.
Claim 8
Dependent Claim
16 words
The fuser member of claim 1 wherein the metal-containing filler is in the form of fibers.
Claim 9
Dependent Claim
23 words
The fuser member of claim 1 wherein the metal-containing filler is one having a high thermal conductivity and a high surface energy reactivity.
Claim 10
Dependent Claim
31 words
The fuser member of claim 1 wherein the metal-containing filler is present in a concentration in the elastomer greater than about 0.05 volume percent based upon the volume of the elastomer.
Claim 11
Dependent Claim
35 words
The fuser member of claim 1 wherein the metal-containing filler is present in the elastomer in a concentration of about 1.0 volume percent to about 15.0 volume percent based upon the volume of the elastomer.
Claim 12
Dependent Claim
25 words
The fuser member of claim 1 wherein the metal-containing filler is selected from the group consisting of metal, metal alloy, metal oxide and metal salt.
Claim 13
Dependent Claim
35 words
The fuser member of claim 11 wherein the metal is selected from the group consisting of copper, tin, silver, zinc, aluminum, iron, lead, molybdenum, platinum, gold, beryllium, nickel, chromium, iridium, ruthenium, tungsten, cadmium and vanadium.
Claim 14
Dependent Claim
39 words
The fuser member of claim 11 wherein the metal alloy is selected from the group consisting of alloys of copper, tin, silver, zinc, aluminum, iron, lead, molybdenum, cadmium, platinum, gold, beryllium, chromium, iridium, ruthenium, tungsten, manganese, magnesium and vanadium.
Claim 15
Dependent Claim
45 words
The fuser member of claim 11 wherein the metal oxide is selected from the group consisting of oxides of copper, tin, magnesium, manganese, silver, zinc, aluminum, iron, lead, molybdenum, platinum, gold, beryllium, cadmium, nickel, chromium, iridium, ruthenium, tungsten, vanadium, potassium and sodium and alloys thereof.
Claim 16
Dependent Claim
60 words
The fuser member of claim 11 wherein the metal salt is selected from the group consisting of lead carbonate, lead acetate, lead iodide, lead chloride, lead fluoride, lead sulfide, lead sulfate, lead nitrate, zinc acetate, zinc chloride, sodium fluoride, sodium acetate, sodium iodide, copper acetate, copper chloride, silver chloride, silver nitrate, silver sulfide, chromium chloride, potassium fluoride and potassium chloride.
Claim 17
Dependent Claim
46 words
The fuser member of claim 1 wherein the metal of the metal-containing filler is selected from the group consisting of Groups 1a, 1b, 2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b, 6b, 7b, 8 and the Rare Earth elements of the Periodic Table of the Elements.
Claim 18
Dependent Claim
12 words
The fuser member of claim 1 wherein the elastomer is a fluoroelastomer.
Claim 19
Dependent Claim
12 words
The fuser member of claim 17 wherein the fluoroelastomer is poly(vinylidene fluoride-hexafluoropropylene).
Claim 20
Dependent Claim
12 words
The fuser member of claim 17 wherein the fluoroelastomer is poly(vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene).
Claim 21
Dependent Claim
13 words
The fuser member of claim 17 wherein the fluoroelastomer is a fluorosilicone rubber.
Claim 22
Dependent Claim
40 words
The fuser member of claim 1 wherein the functional groups of the polymeric release agent having functional groups which interact with the metal of the filler, are selected from the group consisting of hydroxy, epoxy, amino, isocyanate, carboxy and mercapto.
Claim 23
Dependent Claim
26 words
The fuser member of claim 1 wherein the polymeric release agent having functional groups which interact with the metal of the filler comprises a mercapto-functional polyorganosiloxane.
Claim 24
Independent Claim
97 words
A method of fusing thermoplastic resin toner images to a substrate comprising: (a) forming a film of polymeric release agent having functional groups on an elastomer surface of a fuser member at elevated temperatures, said elastomer surface having metal-containing filler dispersed therein in an amount sufficient to interact with the polymeric release agent having functional groups, the elastomer being cured with a nucleophilic addition curing agent; (b) contacting the toner images on said substrate with the coated, heated, elastomer surface for a period of time sufficient to soften the toner; and (c) allowing the toner to cool.
Claim 25
Independent Claim
97 words
A method of fusing thermoplastic resin toner images to a substrate comprising: (a) forming a film of polymeric release agent having functional groups on an elastomer surface of a fuser member at elevated temperatures, said elastomer surface having metal-containing filler dispersed therein in an amount sufficient to interact with the polymeric release agent having functional groups, the elastomer being cured with a nucleophilic addition curing agent; (b) contacting the toner images on said substrate with the coated, heated, elastomer surface for a period of time sufficient to soften the toner; and (c) allowing the toner to cool.
Claim 26
Dependent Claim
23 words
The method of claim 23 comprising continuously depositing the polymeric release agent having functional groups on the elastomer surface containing the metal-containing filler.
Claim 27
Dependent Claim
20 words
The method of claim 23 wherein the thickness of the film is maintained at about 0.1 to about 2 microns.
Claim 28
Dependent Claim
24 words
The method of claim 23 wherein the metal-containing filler is selected from the group consisting of metal, metal alloy, metal oxide and metal salt.
Claim 29
Dependent Claim
34 words
The method of claim 26 wherein the metal is selected from the group consisting of copper, tin, silver, zinc, aluminum, gold, iron, lead, molybdenum, platinum, beryllium, nickel, chromium, iridium, ruthenium, tungsten, cadmium and vanadium.
Claim 30
Dependent Claim
22 words
The method of claim 26 wherein the metal alloy is selected from the group consisting of bronze, brass, monel, beryllium/copper and steel.
Claim 31
Dependent Claim
38 words
The method of claim 26 wherein the metal alloy is selected from the group consisting of alloys of copper, tin, silver, zinc, aluminum, iron, lead, molybdenum, cadmium, platinum, gold, beryllium, chromium, iridium, ruthenium, tungsten, manganese, magnesium and vanadium.
Claim 32
Dependent Claim
44 words
The method of claim 26 wherein the metal oxide is selected from the group consisting of oxides of copper, tin, magnesium, manganese, silver, zinc, aluminum, iron, lead, molybdenum, platinum, gold, beryllium, cadmium, nickel, chromium, iridium, ruthenium, tungsten, vanadium, potassium and sodium and alloys thereof.
Claim 33
Dependent Claim
57 words
The method of claim 26 wherein the metal salt is selected from the group consisting of lead carbonate, lead acetate, lead iodide, lead chloride, lead fluoride, lead sulfide, lead sulfate, lead nitrate, zinc acetate, zinc chloride, sodium fluoride, sodium acetate, copper acetate, copper chloride, silver chloride, silver nitrate, silver sulfide, chromium chloride, potassium fluoride and potassium chloride.
Claim 34
Dependent Claim
45 words
The method of claim 23 wherein the metal of the metal-containing filler is selected from the group consisting of Groups 1a, 1b, 2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b, 6b, 7b, 8 and the Rare Earth Elements of the Periodic Table of the Elements.
Claim 35
Dependent Claim
14 words
The method of claim 23 wherein the nucleophilic addition curing agent is a bisphenol.
Claim 36
Dependent Claim
17 words
The method of claim 33 wherein the curing agent is used with an organophosphonium salt accelerator agent.
Claim 37
Dependent Claim
15 words
The method of claim 23 wherein the nucleophilic addition curing agent is a diamine carbamate.
Claim 38
Dependent Claim
12 words
The method of claim 23 wherein the metal-containing filler is a powder.
Claim 39
Dependent Claim
15 words
The method of claim 23 wherein the metal-containing filler is in the form of flakes.
Claim 40
Dependent Claim
11 words
The method of claim 23 wherein the elastomer is a fluoroelastomer.
Claim 41
Dependent Claim
11 words
The method of claim 38 wherein the fluoroelastomer is poly(vinylidene fluoride-hexafluoropropylene).
Claim 42
Dependent Claim
11 words
The method of claim 38 wherein the fluoroelastomer is poly(vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene).
Claim 43
Dependent Claim
26 words
The method of claim 23 wherein the polymeric release agent having functional groups which interact with the metal-containing filler in the elastomer comprises a mercapto-functional polyorganosiloxane.
Claim 44
Dependent Claim
27 words
The method of claim 23 wherein the metal-containing filler is present in a concentration greater than about 0.05 volume percent based upon the volume of the elastomer.
Claim 45
Dependent Claim
31 words
The method of claim 23 wherein the metal-containing filler is present in a concentration of about 1 volume percent of about 15 volume percent based upon the volume of the elastomer.
Claim 46
Dependent Claim
107 words
In a heated pressure fusing system for fusing toner images in an electrostatic reproducing apparatus in which a fuser roll and a backup roll define a contact arc to fuse toner images onto a substrate and a release agent is applied to the surface of the fuser roll to prevent toner offset upon the fuser roll, the improvement comprising a fuser roll having an elastomer surface with metal-containing filler dispersed therein, the elastomer being cured with a nucleophilic addition curing agent; the release agent applied upon the surface of the elastomer being a polymeric release agent having functional groups which interact with the metal in the filler.
Claim 47
Dependent Claim
107 words
In a heated pressure fusing system for fusing toner images in an electrostatic reproducing apparatus in which a fuser roll and a backup roll define a contact arc to fuse toner images onto a substrate and a release agent is applied to the surface of the fuser roll to prevent toner offset upon the fuser roll, the improvement comprising a fuser roll having an elastomer surface with metal-containing filler dispersed therein, the elastomer being cured with a nucleophilic addition curing agent; the release agent applied upon the surface of the elastomer being a polymeric release agent having functional groups which interact with the metal in the filler.
Claim 48
Dependent Claim
32 words
The pressure fusing system in accordance with claim 44 wherein the metal-containing filler dispersed in the elastomer is selected from the group consisting of metal, metal alloy, metal oxide and metal salt.
Claim 49
Dependent Claim
16 words
The pressure fusing system of claim 44 wherein the nucleophilic addition curing agent is a bisphenol.
Claim 50
Dependent Claim
19 words
The pressure fusing system of claim 46 wherein the bisphenol curing agent is used with an organophosphonium salt accelerator.
Claim 51
Dependent Claim
17 words
The pressure fusing system of claim 44 wherein the nucleophilic addition curing agent is a diamine carbamate.
Claim 52
Dependent Claim
19 words
The pressure fusing system of claim 44 wherein the polymeric release agent having functional groups is a mercapto-functional polyorganosiloxane.
Claim 53
Dependent Claim
13 words
The pressure fusing system of claim 44 wherein the elastomer is a fluoroelastomer.
Claim 54
Dependent Claim
13 words
The pressure fusing system of claim 50 wherein the fluoroelastomer is poly(vinylidene fluoride-hexafluoropropylene).
Claim 55
Dependent Claim
13 words
The pressure fusing system of claim 50 wherein the fluoroelastomer is poly(vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene).
Claim 56
Dependent Claim
29 words
The pressure fusing system of claim 50 wherein the metal-containing filler is present in a concentration greater than about 0.05 volume percent based upon the volume of the elastomer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |