Patent EP0441645A2 successfully refreshed from Google Patents.
EP0441645A2
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EP
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Fluoroelastomer coated fuser roll
Assignee: Ames Rubber Corp
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Filing: 1991-02-08
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Granted: —
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Expires: 2011-02-08
Abstract
Abstract A fuser member for applying heat and pressure to fuse toner to a recording medium which does not require use of mercapto functional release agent compounds to prevent offset. The member includes a fluoroelastomer surface of a polymer of at least vinylidene fluoride and hexafluoropropylene and has at least 23.4 mole % hexafluoropropylene. In a fluoroelastomer copolymer of VF₂ and HFP, the fluorine content is at least above 69%.
Inventors
- 👤 Chris Del Rosario
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 12:54
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31652; Y10T428/31663; Y10T428/31678
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
38 words
A fuser member to fix toner particles on a recording medium, comprising: a substrate; and a top coat on the substrate, the top coat of a fluoroelastomer including vinylidene fluoride and at least about 23.4 mole % hexafluoropropylene.
Claim 2
Dependent Claim
17 words
The fuser member of claim 1, wherein the fluoroelastomer includes at least about 30.0 mole % hexafluoropropylene.
Claim 3
Dependent Claim
17 words
The fuser member of claim 1, wherein the fluoroelastomer includes at least about 38.1 mole % hexafluoropropylene.
Claim 4
Dependent Claim
17 words
The fuser member of claim 1, wherein the fluoroelastomer is a copolymer of hexafluoropropylene and vinylidene fluoride.
Claim 5
Dependent Claim
14 words
The fuser member of claim 4, including at least about 37 mole % hexafluoropropylene.
Claim 6
Dependent Claim
27 words
The fuser member of claim 1, wherein the fuser member is in the form of a roll and the fluoroelastomer is the outer covering of the roll.
Claim 7
Dependent Claim
29 words
The fuser member of claim 7, wherein the substrate is in the form of a metal core having a layer of silicone material including metal oxide filler, disposed thereon.
Claim 8
Dependent Claim
21 words
The fuser member of claim 8, and including a tie coat of fluoroelastomer disposed between the top coat and the substrate.
Claim 9
Dependent Claim
16 words
The fuser member of claim 1, wherein the fluoroelastomer is cured by a nuceophilic addition cure.
Claim 10
Dependent Claim
20 words
The fuser member of claim 9, wherein the nuceophilic addition cure utilizes MgO as an acceptor and Ca(OH)₂ as activator.
Claim 11
Dependent Claim
37 words
The fuser member of claim 10, wherein MgO is included in an amount between about 2 to 4 parts and Ca(OH)₂ in an amount between about 4 to 8 parts, per 100 parts by weight of elastomer.
Claim 12
Dependent Claim
21 words
The fuser member of claim 10, wherein the fluoroelastomer includes less than about 10 parts metal oxide per 100 parts elastomer.
Claim 13
Dependent Claim
60 words
A fuser system for fusing toner to a recording medium, comprising: a substrate; a top coat formed of a fluoroelastomer material disposed on the substrate, the fluoroelastomer material including vinylidene fluoride and at least about 23.4 mole % hexafluoropropylene; a polysiloxane release agent fluid disposed on the surface of the top coat, the fluid substantially free of mercapto functional compounds.
References Cited (Backward Citations)
No citation records indexed.
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