US5978641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial integral heating fusing belt
Assignee: Xerox Corp
•
Filing: 1998-10-16
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Granted: 1999-11-02
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Expires: 2018-10-16
Abstract
Abstract A rapid warm-up fuser belt (and fusers and marking machines that use such a fuser belt) comprised of a conductive substrate having a resistive heating layer on one side and a release layer on the other side. The fuser belt further enables an electrical contact to the conductive substrate. Electrical current passing through the conductive substrate and through the resistive heating layer, causes the resistive heating layer to heat. The fuser belt can either provide for a direct electrical connection to the resistive heating layer, or it can include a semiconductive layer on the resistive heating layer that improves the electrical connection to the resistive heating layer.
Inventors
- 👤 William H. Wayman
- 👤 Rasin Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:46
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; G03G2215/00; G03G2215/20; G03G2215/2003; G03G2215/2016; G03G2215/2025; G03G2215/2032
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
42 words
A fusing belt comprised of: a metallic substrate have a first surface and a second surface: a resistive layer disposed on said first surface; a release layer comprised disposed on said second surface; and a semiconductive layer disposed on said resistive layer.
Claim 2
Dependent Claim
42 words
A fusing belt comprised of: a metallic substrate have a first surface and a second surface: a resistive layer disposed on said first surface; a release layer comprised disposed on said second surface; and a semiconductive layer disposed on said resistive layer.
Claim 3
Dependent Claim
18 words
The fusing belt according to claim 1, wherein said resistive layer is comprised of a high temperature material.
Claim 4
Dependent Claim
15 words
The fusing belt according to claim 1, wherein said resistive layer includes electrically conductive particles.
Claim 5
Dependent Claim
13 words
The fusing belt according to claim 1, wherein said conductive substrate includes nickel.
Claim 6
Dependent Claim
14 words
The fusing belt according to claim 1, wherein said conductive substrate includes stainless steel.
Claim 7
Dependent Claim
13 words
The fusing belt according to claim 1, wherein said conductive substrate includes aluminum.
Claim 8
Dependent Claim
100 words
A fuser comprised of: a fusing belt member comprised of a metallic substrate have a first surface and a second surface, a resistive layer disposed on said first surface, and a release layer disposed on said second surface; a contact roller in electrical contact with said fusing belt; an electrical connection in electrical contact with said metallic substrate; an electrical source, operatively connected to said contact roller and to said electrical connection, said electrical source for sending electrical current through said resistive layer such that said resistive layer heats said fusing belt; and a semiconductive layer over said resistive layer.
Claim 9
Dependent Claim
100 words
A fuser comprised of: a fusing belt member comprised of a metallic substrate have a first surface and a second surface, a resistive layer disposed on said first surface, and a release layer disposed on said second surface; a contact roller in electrical contact with said fusing belt; an electrical connection in electrical contact with said metallic substrate; an electrical source, operatively connected to said contact roller and to said electrical connection, said electrical source for sending electrical current through said resistive layer such that said resistive layer heats said fusing belt; and a semiconductive layer over said resistive layer.
Claim 10
Dependent Claim
27 words
A fuser according to claim 7, further including a pressure roller adjacent said release layer, said pressure roller for forming a fusing nip with said fusing belt.
Claim 11
Dependent Claim
15 words
The fuser according to claim 7, wherein said resistive layer is comprised of a fluoropolymer.
Claim 12
Dependent Claim
14 words
The fuser according to claim 7, wherein said resistive layer includes electrically conductive particles.
Claim 13
Dependent Claim
17 words
The fuser according to claim 7, wherein said contact roller is comprised of a thermally insulating material.
Claim 14
Dependent Claim
14 words
The fuser according to claim 11, wherein said thermally insulating material includes a ceramic.
Claim 15
Dependent Claim
22 words
The fuser according to claim 11, wherein said contact roller includes a conductive surface for providing electrical contact with said fuser belt.
Claim 16
Dependent Claim
204 words
A printing machine, comprising: a photoreceptor having a photoconductive surface; a charging station for charging said photoconductive surface to a predetermined potential; an exposure station for exposing said photoconductive surface to produce an electrostatic latent image on said photoconductive surface; a developing station for depositing developing material on said electrostatic latent image so as to produce a toner image on said photoconductive surface; a transfer station for transferring said toner image on said photoconductive surface to a substrate; and a fusing station for fusing said toner image on said photoconductive surface to said substrate, said fusing station including: a fusing belt member comprised of a metallic substrate have a first surface and a second surface, a resistive layer disposed on said first surface, and a release layer disposed on said second surface; a contact roller in electrical contact with said fusing belt; an electrical connection in electrical contact with said metallic substrate; an electrical source, operatively connected to said contact roller and to said electrical connection, said electrical source for sending electrical current through said resistive layer such that said resistive layer heats said fusing belt; and a semiconductive layer over said resistive layer and disposed between said resistive layer and said contact roller.
Claim 17
Dependent Claim
204 words
A printing machine, comprising: a photoreceptor having a photoconductive surface; a charging station for charging said photoconductive surface to a predetermined potential; an exposure station for exposing said photoconductive surface to produce an electrostatic latent image on said photoconductive surface; a developing station for depositing developing material on said electrostatic latent image so as to produce a toner image on said photoconductive surface; a transfer station for transferring said toner image on said photoconductive surface to a substrate; and a fusing station for fusing said toner image on said photoconductive surface to said substrate, said fusing station including: a fusing belt member comprised of a metallic substrate have a first surface and a second surface, a resistive layer disposed on said first surface, and a release layer disposed on said second surface; a contact roller in electrical contact with said fusing belt; an electrical connection in electrical contact with said metallic substrate; an electrical source, operatively connected to said contact roller and to said electrical connection, said electrical source for sending electrical current through said resistive layer such that said resistive layer heats said fusing belt; and a semiconductive layer over said resistive layer and disposed between said resistive layer and said contact roller.
Claim 18
Dependent Claim
17 words
The fuser according to claim 14, wherein said contact roller is comprised of a thermally insulating material.
Claim 19
Dependent Claim
14 words
The fuser according to claim 15, wherein said thermally insulating material includes a ceramic.
Claim 20
Dependent Claim
22 words
The fuser according to claim 15, wherein said contact roller includes a conductive surface for providing electrical contact with said fuser belt.
References Cited (Backward Citations)
US4582416A
Cited
US4724305A
Cited
US4912514A
Cited
US5115279A
Cited
US5869808A
Cited
JPH06176851A
Cited
US5436712A
Cited
US5450182A
Cited
US5530534A
Cited
US5881349A
Cited
US5708950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-01 | 2003-05-03 | 2003-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-01 | 2007-05-03 | 2007-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-01 | 2011-05-03 | 2011-11-02 | $7700.00 | Window Closed / Lapsed |