Patent US4807341A successfully refreshed from Google Patents.
US4807341A
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Toner fusing roll covered with crosslinked elastomeric siloxane copolymer containing diphenylsiloxane recurring units and method of preparation
Assignee: Eastman Kodak Co
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Filing: 1987-10-13
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Granted: 1989-02-28
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Expires: 2007-10-13
Abstract
Abstract Toner fusing rolls with improved properties comprise cylindrical cores covered with crosslinked poly(diorganosiloxanes) having 5-15 mole percent diphenylsiloxane recurring units. The rolls are produced by molding and curing the uncrosslinked polysiloxanes on cylindrical cores.
Inventors
- 👤 Paul L. Nielsen
- 👤 Joseph A. Pavlisko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:26
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/139; Y10T428/1393
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
59 words
A roll useful for fusing heat-softenable toner material to a substrate, wherein the roll comprises a cylindrical core having an outer covering comprising a crosslinked elastomeric siloxane copolymer comprising a major proporton of dimethylsiloxane recurring units, from 5 to 15 mole percent diphenylsiloxane recurring units, and more than 0 but less than 5 mole percent vinyl-addition-crosslinked siloxane recurring units.
Claim 2
Dependent Claim
59 words
A roll useful for fusing heat-softenable toner material to a substrate, wherein the roll comprises a cylindrical core having an outer covering comprising a crosslinked elastomeric siloxane copolymer comprising a major proporton of dimethylsiloxane recurring units, from 5 to 15 mole percent diphenylsiloxane recurring units, and more than 0 but less than 5 mole percent vinyl-addition-crosslinked siloxane recurring units.
Claim 3
Dependent Claim
19 words
The roll of claim 1, wherein the outer covering further comprises an inorganic filler mixed with the siloxane copolymer.
Claim 4
Dependent Claim
14 words
The roll of claim 2, wherein the inorganic filler comprises alumina and ferric oxide.
Claim 5
Dependent Claim
21 words
The roll of claim 1, wherein the diphenylsiloxane recurring units comprise from 8 to 12 mole percent of the siloxane copolymer.
References Cited (Backward Citations)
US3795033A
Cited
US4360566A
Cited
US4430406A
Cited
US4515884A
Cited
JPS59209129A
Cited
US4603087A
Cited
US4719130A
Cited
JPS623987A
Cited
JPS623988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |