US4853737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll useful in electrostatography
Assignee: Eastman Kodak Co
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Filing: 1988-05-31
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Granted: 1989-08-01
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Expires: 2008-05-31
Abstract
Abstract Rolls with improved properties having an outer layer comprising cured fluoroelastomer containing pendant polydiorganosiloxane segments that are covalently bonded to the backbone of the fluoroelastomer. The outer layer provides a release surface that is abhesive to heat-softenable toner material.
Inventors
- 👤 Paul A. Hartley
- 👤 Joseph A. Pavlisko
- 👤 Hal E. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:18
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/442; C08F; C08F8/00; C08F8/42; G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
42 words
A roll comprising a cylindrical core having an outer layer comprising cured fluoroelastomer having pendant polydiorganosiloxane segments that are convalently bonded to the backbone of the fluoroelastomer and have a number average molecular weight in the range of about 1,000 to 20,000.
Claim 2
Dependent Claim
42 words
A roll comprising a cylindrical core having an outer layer comprising cured fluoroelastomer having pendant polydiorganosiloxane segments that are convalently bonded to the backbone of the fluoroelastomer and have a number average molecular weight in the range of about 1,000 to 20,000.
Claim 3
Dependent Claim
29 words
A fuser roll of claim 1 useful in electrostatography for fusing heat-softenable toner material to a substrate wherein the outer layer provides a release surface abhesive to said material.
Claim 4
Dependent Claim
17 words
A fuser roll of claim 2, wherein the fluoroelastomer is a polymer of an ethylenically unsaturaged fluorohydrocarbon.
Claim 5
Dependent Claim
24 words
A fuser roll of claim 2, wherein the fluoroelastomer is a copolymer of vinylidene fluoride with hexafluoropropylene or vinylidene fluoride with hexafluoropropylene and tetrafluoroethylene.
Claim 6
Dependent Claim
24 words
A fuser roll of claim 2, wherein the polydiorganosiloxane segments have a number average molecular weight in the range of about 2,000 to 15,000.
Claim 7
Dependent Claim
31 words
A fuser roll of claim 5, wherein the polydiorganosiloxane segments are covalently bonded to the backbone of the fluoroelastomer by reaction with a polydimethylsiloxane containing at least one amino propyl group.
Claim 8
Dependent Claim
12 words
A fuser roll of claim 6, wherein the polydimethylsiloxane is an α,ω-bis(aminopropyl)-polydimethylsiloxane.
Claim 9
Dependent Claim
35 words
A fuser roll of claim 6, wherein the fluoroelastomer is a copolymer of vinylidene fluoride with hexafluoropropylene and the polydimethylsiloxane segments have a number average molecular weight in the range of about 2,000 to 15,000.
Claim 10
Dependent Claim
17 words
A fuser roll of claim 7, wherein the fluoroelastomer is a copolymer of vinylidene fluoride with tetrafluoroethylene.
Claim 11
Dependent Claim
13 words
A fuser roll of claim 2, wherein the layer further comprises a filler.
Claim 12
Dependent Claim
13 words
A fuser roll of claim 10, wherein the filler in a metal-containing filler.
Claim 13
Dependent Claim
19 words
A fuser roll of claim 11, wherein the filler is a metal, metal alloy, metal oxide or metal salt.
Claim 14
Dependent Claim
28 words
A fuser roll of claim 12, wherein the metal is copper, tin, silver, zinc, aluminum, iron, lead, platinum, gold, beryllium, nickel, chromium, iridium, ruthenium, tungsten, cadmium or vanadium.
Claim 15
Dependent Claim
29 words
A fuser roll of claim 12, wherein the filler is present in a concentration in the range of about 10 to 100 percent, by weight, based on the fluoroelastomer.
Claim 16
Dependent Claim
12 words
A fuser roll of claim 12, wherein the filler is lead oxide.
References Cited (Backward Citations)
CA764537A
Cited
US4257699A
Cited
US4264181A
Cited
US4272179A
Cited
US4314043A
Cited
GB2067471A
Cited
US4796049A
Cited
US4727394A
Cited
US4763158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |