US3987530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat fuser roll and method of manufacture
Assignee: International Business Machines Corp
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Filing: 1975-04-11
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Granted: 1976-10-26
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Expires: 1995-04-11
Abstract
Abstract A heat fuser roll and the method of manufacture thereof. The roll comprises a deformable layer on a base member and the deformable layer is produced by coating the base member with a silicone gum material containing no curing agent and treating the coated base member by heating in an inert atmosphere to a temperature at which substantial cross-linking occurs for a predetermined time to produce a tough long-wearing silicone rubber deformable layer.
Inventors
- 👤 Robert B. Atkin
- 👤 Frederick C. Tarmann
- 👤 John H. Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:07
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
68 words
The method of manufacturing an elastic and deformable coating comprising the steps of: forming a thin film of silicone gum material containing no curing agent on a base member, and treating said silicone gum material in an inert atmosphere by heating for a predetermined time to a temperature at which substantial cross-linking occurs to produce a tough, long-wearing elastic and deformable silicone rubber coating on said base member.
Claim 2
Independent Claim
68 words
The method of manufacturing an elastic and deformable coating comprising the steps of: forming a thin film of silicone gum material containing no curing agent on a base member, and treating said silicone gum material in an inert atmosphere by heating for a predetermined time to a temperature at which substantial cross-linking occurs to produce a tough, long-wearing elastic and deformable silicone rubber coating on said base member.
Claim 3
Independent Claim
76 words
The method of manufacturing a contact heat fuser roll for fixing a resinous powder image to a substrate comprising the steps of: forming a thin film of a silicone gum material containing no curing agent on a non-deformable cylindrical member, and treating said silicone gum material in an inert atmosphere by heating for a predetermined time to a temperature at which substantial cross-linking occurs to produce a tough, long-wearing silicone rubber coating on said cylindrical member.
Claim 4
Independent Claim
76 words
The method of manufacturing a contact heat fuser roll for fixing a resinous powder image to a substrate comprising the steps of: forming a thin film of a silicone gum material containing no curing agent on a non-deformable cylindrical member, and treating said silicone gum material in an inert atmosphere by heating for a predetermined time to a temperature at which substantial cross-linking occurs to produce a tough, long-wearing silicone rubber coating on said cylindrical member.
Claim 5
Dependent Claim
33 words
The method according to claim 2 wherein said forming step comprises applying to the surface of said cylindrical member a coating of a thickness of from about 3 mils to about 10 mils.
Claim 6
Dependent Claim
24 words
The method according to claim 2 wherein said temperature in said treating step is about 600° F. and said predetermined time is three hours.
Claim 7
Dependent Claim
14 words
The method according to claim 2 wherein said inert atmosphere comprises a nitrogen atmosphere.
Claim 8
Independent Claim
98 words
The method for manufacturing a contact heat fuser roll for fixing a resinous powder image to a substrate comprising the steps of: coating a base member with a solution of silicone gum in an organic solvent, said solution containing no curing agent; drying the coated base member in air for a time sufficient for substantially all of said solvent to evaporate, and curing said silicone gum by heating the coated base member to a predetermined temperature in an inert atmosphere for at least a predetermined time to produce a tough, long-wearing silicone rubber coating on said base member.
Claim 9
Independent Claim
98 words
The method for manufacturing a contact heat fuser roll for fixing a resinous powder image to a substrate comprising the steps of: coating a base member with a solution of silicone gum in an organic solvent, said solution containing no curing agent; drying the coated base member in air for a time sufficient for substantially all of said solvent to evaporate, and curing said silicone gum by heating the coated base member to a predetermined temperature in an inert atmosphere for at least a predetermined time to produce a tough, long-wearing silicone rubber coating on said base member.
Claim 10
Dependent Claim
33 words
The method according to claim 6 wherein said coating step comprises applying to the surface of said base member a coating of a thickness of from about 3 mils to about 10 mils.
Claim 11
Dependent Claim
25 words
The method according to claim 6 wherein said predetermined temperature in said curing step is about 600° F. and said predetermined time is 3 hours.
Claim 12
Dependent Claim
14 words
The method according to claim 6 wherein said inert atmosphere comprises a nitrogen atmosphere.
Claim 13
Dependent Claim
32 words
The method according to claim 6 comprising the additional step of: cooling the cured silicon rubber coated base member in said inert atmosphere until the temperature is below a second predetermined temperature.
Claim 14
Dependent Claim
15 words
The method according to claim 10 wherein said second predetermined temperature is about 350° F.
Claim 15
Dependent Claim
17 words
As an article of manufacture, a fuser roll prepared in accordance with the method of claim 2.
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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) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |