US3849062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced fuser roll construction
Assignee: Xerox Corp
•
Filing: 1973-05-21
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Granted: 1974-11-19
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Expires: 1993-05-21
Abstract
Abstract A fusing system for an electrostatic reproduction apparatus in which copy sheets are passed through pressure rollers applying heat and pressure to fuse a powder image on the copy sheets. One of the rotatable members which is heated to an elevated temperature to apply heat and pressure includes a core member which is covered with a reinforced layer of elastomeric material. The reinforced layer is formed by placing a jacket over a partially cured elastomeric layer and then spraying elastomeric material over the jacket until the desired thickness is formed. The jacket is made of one or more strands of a suitable material which may be crossed, woven, laid, braided or knitted.
Inventors
- 👤 R Thettu
- 👤 E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:19
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
In an electrostatic reproduction machine in which the fusing device for fusing powder images to copy sheets is accomplished by passing the powder image on the sheets through the nip of compressible rotatable members which apply heat and pressure, an improved fuser roll comprising: a rigid core member; a thin coating of elastomeric material covering the surface of said core member; said elastomeric coating having a reinforcing jacket positioned thereon; said jacket being formed by a plurality of strands of heat stable material in a predetermined pattern; wherein said reinforcing jacket material has a tensile strength exceeding that of said elastomeric coating; and wherein said reinforcing jacket material has elongation characteristics less than that of said elastomeric coating.
Claim 2
Dependent Claim
118 words
In an electrostatic reproduction machine in which the fusing device for fusing powder images to copy sheets is accomplished by passing the powder image on the sheets through the nip of compressible rotatable members which apply heat and pressure, an improved fuser roll comprising: a rigid core member; a thin coating of elastomeric material covering the surface of said core member; said elastomeric coating having a reinforcing jacket positioned thereon; said jacket being formed by a plurality of strands of heat stable material in a predetermined pattern; wherein said reinforcing jacket material has a tensile strength exceeding that of said elastomeric coating; and wherein said reinforcing jacket material has elongation characteristics less than that of said elastomeric coating.
Claim 3
Dependent Claim
27 words
A roll device acording to claim 1 wherein said strands have a diameter ranging from about 10 to 90 percent of the thickness of the elastomeric coating.
Claim 4
Dependent Claim
16 words
A roll device according to claim 2 wherein said strands are made from high temperature nylon.
Claim 5
Dependent Claim
24 words
A roll device according to claim 2 wherein said strands are made from a material group consisting of ceramic, plastic, metallic, or combinations thereof.
Claim 6
Dependent Claim
12 words
A roll device according to claim 1 wherein said jacket is woven.
Claim 7
Dependent Claim
12 words
A roll device according to claim 1 wherein said jacket is knitted.
Claim 8
Dependent Claim
20 words
A roll device according to claim 1 wherein said reinforcing jacket material has deformable characteristics different than said elastomeric coating.
References Cited (Backward Citations)
US2695248A
Cited
US2693352A
Cited
US2679572A
Cited
US2867112A
Cited
US2879803A
Cited
US3297461A
Cited
US3256002A
Cited
US3291466A
Cited
US3414711A
Cited
US3437032A
Cited
US3466210A
Cited
US3562084A
Cited
US3730794A
Cited
US3686731A
Cited
US3637416A
Cited
US3775208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |