Patent US4126722A successfully refreshed from Google Patents.
US4126722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fusing surface
Assignee: Xerox Corp
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Filing: 1976-10-18
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Granted: 1978-11-21
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Expires: 1996-10-18
Abstract
Abstract A silicone rubber surface for fixing resinous powder images to a substrate at elevated temperatures in a xerographic reproducing apparatus is disclosed. The silicone rubber surface prevents offset of the image by supplying inherently a release material to the surface. Dispersed in the silicone rubber is a catalytic agent which in the presence of water or moisture, promotes the degradation of the silicone rubber over a period of time at elevated temperatures. The release material is the degradation product of the silicone rubber, and release is possible throughout the lifetime of the fuser surface without the external application of release materials.
Inventors
- 👤 Richard J. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:01
CPC Classifications
G; G03; G03G; G03G11/00; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/269; Y10T428/31; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
118 words
An article for use in a xerographic reproducing apparatus for fixing a resin-based powder image to a substrate at elevated temperatures, comprising a fuser member having a surface of silicone rubber having substantially no reinforcing filler and being capable of forming a degradation product in the presence of water at elevated temperatures, said silicone rubber having a catalytic agent therein in an amount which in the presence of water or moisture, promotes the degradation of the silicone rubber and the formation of a degradation product on the surface, said degradation product acting as a release material and having an adhesion for the resin-based powder which is less than the adhesion which fused resin-based powder has for the substrate.
Claim 2
Dependent Claim
118 words
An article for use in a xerographic reproducing apparatus for fixing a resin-based powder image to a substrate at elevated temperatures, comprising a fuser member having a surface of silicone rubber having substantially no reinforcing filler and being capable of forming a degradation product in the presence of water at elevated temperatures, said silicone rubber having a catalytic agent therein in an amount which in the presence of water or moisture, promotes the degradation of the silicone rubber and the formation of a degradation product on the surface, said degradation product acting as a release material and having an adhesion for the resin-based powder which is less than the adhesion which fused resin-based powder has for the substrate.
Claim 3
Dependent Claim
21 words
The article of claim 1 wherein the silicone rubber having the catalytic agent therein is at least 0.5 mil in thickness.
Claim 4
Dependent Claim
23 words
The article of claim 1 wherein the silicone rubber having the catalytic agent therein is about 6 to about 10 mils in thickness.
Claim 5
Dependent Claim
21 words
The article of claim 1 wherein the catalytic agent is an inorganic acid which promotes the degradation of the silicone rubber.
Claim 6
Dependent Claim
21 words
The article of claim 1 wherein the catalytic agent is an inorganic base which promotes the degradation of the silicone rubber.
Claim 7
Dependent Claim
21 words
The article of claim 1 wherein the catalytic agent is an organic acid which promotes the degradation of the silicone rubber.
Claim 8
Dependent Claim
21 words
The article of claim 1 wherein the catalytic agent is an organic base which promotes the degradation of the silicone rubber.
Claim 9
Dependent Claim
15 words
The article of claim 1 further comprising an agent capable of supplying water incorporated therein.
Claim 10
Dependent Claim
24 words
The article of claim 8 wherein the agent capable of supplying water is at least 0.05 percent by weight based upon the silicone rubber.
Claim 11
Dependent Claim
27 words
The article of claim 8 wherein the agent capable of supplying water is preferably about 1.0 to about 5.0 percent by weight based upon the silicone rubber.
Claim 12
Dependent Claim
20 words
The article of claim 1 wherein the catalytic agent is present in an amount greater than about 0.1 weight percent.
Claim 13
Dependent Claim
22 words
The article of claim 1 wherein the catalytic agent is present in an amount of about 1.0 to about 10 weight percent.
Claim 14
Dependent Claim
14 words
The article of claim 1 wherein the silicone rubber is a polymethyl phenyl siloxane.
Claim 15
Dependent Claim
13 words
The article of claim 1 wherein the silicone rubber is a polydialkyl siloxane.
Claim 16
Dependent Claim
11 words
The article of claim 14 wherein the silicone rubber is fluorinated.
Claim 17
Dependent Claim
12 words
The article of claim 1 wherein the silicone rubber is polymethylvinyl siloxane.
Claim 18
Dependent Claim
10 words
The article of claim 1 comprising a fuser roll member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |