US5248339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fusing member comprising fluorine-containing elastomers useful in electrostatography
Assignee: Eastman Kodak Co
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Filing: 1992-04-24
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Granted: 1993-09-28
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Expires: 2012-04-24
Abstract
Abstract An electrostatographic toner fusing member having a support and a layer containing a crosslinked polyfluorophosphazene elastomer with thermally conductive filler particles. This fusing member is used in a device for fusing electrostatographic toner materials to a substrate which device employs both heat and pressure The fusing member exhibits an excellent combination of properties, including resistance to swelling by release liquids, resistance to thermal degradation and thermal conductivity that is superior to prior art fusing members employing crosslinked fluoroelastomers.
Inventors
- 👤 John J. Fitzgerald
- 👤 Paul L. Nielsen
- 👤 Wayne T. Ferrar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:18
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025; G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
31 words
In an electrostatographic toner fusing member having a support and a layer comprising thermally conducting filler particles and a crosslinked fluoroelastomer, the improvement wherein said fluoroelastomer is a crosslinked polyfluorophosphazene elastomer.
Claim 2
Dependent Claim
31 words
In an electrostatographic toner fusing member having a support and a layer comprising thermally conducting filler particles and a crosslinked fluoroelastomer, the improvement wherein said fluoroelastomer is a crosslinked polyfluorophosphazene elastomer.
Claim 3
Dependent Claim
17 words
The fusing member of claim 1, wherein said layer forms the outer surface of the fusing member.
Claim 4
Dependent Claim
21 words
The fusing member of claim 1, having a layer comprising a silicone elastomer between said support and said polyfluorophosphazene elastomer layer.
Claim 5
Dependent Claim
13 words
The fusing member of claim 1, wherein said support is a cylindrical core.
Claim 6
Dependent Claim
27 words
The fusing member of claim 1, wherein said polyfluorophosphazene elastomer is a crosslinked polyfluorophosphazene elastomer comprising fluoroalkoxy substituents on the phosphorus atoms that form the polymer backbone.
Claim 7
Dependent Claim
27 words
The fusing member of claim 1, wherein said filler particles are present in a concentration sufficient to provide a thermal conductivity of at least about 0.5 W/m°C.
Claim 8
Dependent Claim
17 words
The fusing member of claim 6, wherein the filler particles are aluminum oxide and iron oxide particles.
Claim 9
Dependent Claim
57 words
In a device for fusing electrostatographic toner to a substrate by applying heat and pressure, said device comprising a first member for pressure contacting and heating said toner and a second member for maintaining said substrate and toner in contact with said first member, the improvement wherein said first member is the fusing member of claim 1.
Claim 10
Dependent Claim
21 words
The device of claim 8, wherein said first and second members are rolls that form a nip for receiving said substrate.
Claim 11
Dependent Claim
26 words
The device of claim 8 wherein said filler particles are present in a concentration sufficient to provide a thermal conductivity of at least about 0.5 W/m°C.
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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) | 1996-09-27 | 1997-03-29 | 1997-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-27 | 2001-03-29 | 2001-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-27 | 2005-03-29 | 2005-09-28 | $7700.00 | Window Closed / Lapsed |