US4078285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hard alloy fuser members
Assignee: Xerox Corp
•
Filing: 1976-10-28
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Granted: 1978-03-14
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Expires: 1996-10-28
Abstract
Abstract Fuser members having hard, abrasion resistant bare metal alloy surfaces which are chemically reactive, are described for fuser assemblies in office copier machines. Preferred fuser assemblies include cylindrical rolls having at least an outer surface of a chemically reactive copper alloy.
Inventors
- 👤 Donald A. Seanor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:06
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
84 words
A bare metal fuser member for pressure fusing toned electrostatic images at elevated temperatures, the fuser member having improved resistance to wear and using polymer release materials having reactive functionality with the metal of the fuser member to reduce toner offset comprising a base member having a working surface of hard, abrasion resistant metal alloy, said metal alloy being the type which is chemically reactive and thereby permits the formation of a barrier layer when polymer release materials having reactive functionality are used thereon.
Claim 2
Dependent Claim
84 words
A bare metal fuser member for pressure fusing toned electrostatic images at elevated temperatures, the fuser member having improved resistance to wear and using polymer release materials having reactive functionality with the metal of the fuser member to reduce toner offset comprising a base member having a working surface of hard, abrasion resistant metal alloy, said metal alloy being the type which is chemically reactive and thereby permits the formation of a barrier layer when polymer release materials having reactive functionality are used thereon.
Claim 3
Dependent Claim
16 words
The bare metal fuser member of claim 1 wherein the metal alloy is a copper-containing alloy.
Claim 4
Dependent Claim
14 words
The bare metal fuser member of claim 2 wherein the copper-containing alloy is copper/aluminum.
Claim 5
Dependent Claim
15 words
The bare metal fuser member of claim 2 wherein the copper-containing alloy is copper/zinc (brass).
Claim 6
Dependent Claim
15 words
The bare metal fuser member of claim 2 wherein the copper-containing alloy is copper/tin (bronze).
Claim 7
Dependent Claim
14 words
The bare metal fuser member of claim 2 wherein the copper-containing alloy is copper/beryllium.
Claim 8
Dependent Claim
14 words
The bare metal fuser member of claim 2 wherein the copper-containing alloy is copper/nickel.
Claim 9
Dependent Claim
18 words
The bare metal fuser member of claim 1 further comprising a metal alloy which is substantially thermally conductive.
Claim 10
Dependent Claim
86 words
A bare metal roll for pressure fusing toned electrostatic images at elevated temperatures, the bare metal roll having improved resistance to wear and using fluid polymer release materials having reactive functionality with the metal of the roll to reduce toner offset comprising a cylindrical member having a working surface of hard, abrasion resistant, chemically reactive copper-containing alloy, the chemical reactivity of the copper-containing alloy being sufficient to permit the formation of a barrier layer when the fluid polymer release material having reactive functionality is used thereon.
Claim 11
Dependent Claim
86 words
A bare metal roll for pressure fusing toned electrostatic images at elevated temperatures, the bare metal roll having improved resistance to wear and using fluid polymer release materials having reactive functionality with the metal of the roll to reduce toner offset comprising a cylindrical member having a working surface of hard, abrasion resistant, chemically reactive copper-containing alloy, the chemical reactivity of the copper-containing alloy being sufficient to permit the formation of a barrier layer when the fluid polymer release material having reactive functionality is used thereon.
Claim 12
Dependent Claim
18 words
The bare metal fuser roll of claim 9 further comprising a copper-containing alloy which is substantially thermally conductive.
Claim 13
Dependent Claim
14 words
The bare metal fuser roll of claim 9 wherein the copper-containing alloy is copper/aluminum.
Claim 14
Dependent Claim
15 words
The bare metal fuser roll of claim 9 wherein the copper-containing alloy is copper/zinc (brass).
Claim 15
Dependent Claim
15 words
The bare metal fuser roll of claim 9 wherein the copper-containing alloy is copper/tin (bronze).
Claim 16
Dependent Claim
14 words
The bare metal fuser roll of claim 9 wherein the copper-containing alloy is copper/beryllium.
Claim 17
Dependent Claim
14 words
The bare metal fuser roll of claim 9 wherein the copper-containing alloy is copper/nickel.
References Cited (Backward Citations)
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Cited
US3224897A
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US3945723A
Cited
US4011362A
Cited
US3965853A
Cited
US4000957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |