US4763158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron nitride filled fuser rolls
Assignee: Xerox Corp
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Filing: 1987-09-11
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Granted: 1988-08-09
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Expires: 2007-09-11
Abstract
Abstract A fuser member for electrostatographic printing machine has a base member having a thermally conductive elastomer surface layer coated thereon which contains boron nitride filler particles dispersed therein in an amount to increase the thermal conductivity of the elastomer while maintaining good release characteristics of the elastomer surface.
Inventors
- 👤 Edward L. Schlueter, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:08
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; C; C08; C08K; C08K3/00; C08K3/38
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
54 words
A fuser member for use in an electrostatographic printing machine comprising: a base member having a thermally conductive elastomeric surface layer coated thereon, said elastomer surface layer containing boron nitride filler particles dispersed therein in an amount to increase the thermal conductivity of the elastomer while maintaining good release characteristics of the elastomeric surface.
Claim 2
Dependent Claim
54 words
A fuser member for use in an electrostatographic printing machine comprising: a base member having a thermally conductive elastomeric surface layer coated thereon, said elastomer surface layer containing boron nitride filler particles dispersed therein in an amount to increase the thermal conductivity of the elastomer while maintaining good release characteristics of the elastomeric surface.
Claim 3
Dependent Claim
31 words
The fuser member of claim 1, wherein said boron nitride particles are present in an amount up to about 100 parts by weight per 100 parts by weight of the elastomer.
Claim 4
Dependent Claim
25 words
The fuser member of claim 1 further including up to about 100 parts by weight of submicron filler per 100 parts by weight of elastomer.
Claim 5
Dependent Claim
23 words
The fuser member of claim 1, wherein said boron nitride particles have an average diameter of from about 5 to about 15 microns.
Claim 6
Dependent Claim
13 words
The fuser member of claim 1, wherein said elastomer is a cured polyorganosiloxane.
Claim 7
Dependent Claim
50 words
The fuser member of claim 5, wherein said polyorganosiloxane has the formula ##STR4## wherein R is hydrogen or substituted or unsubstituted alkyl, alknyl or aryl having less than 19 carbon atoms, each of A and B may be any of methyl, hydroxy or vinyl groups and < m/n<1 and m+n>350.
Claim 8
Dependent Claim
12 words
The fuser member of claim 1, wherein said elastomer is a fluoroelastomer.
Claim 9
Dependent Claim
12 words
The fuser member of claim 7, wherein the fluoroelastomer is poly(vinylidene fluoride-hexafluoropropylene).
Claim 10
Dependent Claim
12 words
The fuser member of claim 7, wherein the fluoroelastomer is poly(vinylidene fluoride-hexafluoropropylene)-tetrafluoroethylene.
Claim 11
Dependent Claim
12 words
The fuser member of claim 7, wherein the fluoroelastomer is a fluorosilicone.
Claim 12
Dependent Claim
32 words
The fuser member of claim 2, wherein said boron nitride is present in an amount of from about 10 to about 50 parts by weight per 100 parts by weight of elastomer.
Claim 13
Dependent Claim
28 words
The fuser member of claim 11 further including from about 20 to about 40 parts by weight of submicron iron oxide per 100 parts by weight of elastomer.
Claim 14
Dependent Claim
23 words
The fuser member of claim 12, wherein said boron nitride particles have an average diameter of from about 5 to about 15 microns.
Claim 15
Dependent Claim
30 words
The fuser member of claim 1, wherein said base member is a metallic cylindrical roll and said elastomer surface layer is from about 0.1 mm to about 2.5 mm thick.
Claim 16
Dependent Claim
18 words
The fuser member of claim 14, wherein said cylindrical roll has a heating element disposed within its center.
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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) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |