US3881859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripper finger design to prevent {37 oil-on-the-copy{38
Assignee: Xerox Corp
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Filing: 1973-11-23
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Granted: 1975-05-06
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Expires: 1993-11-23
Abstract
Abstract Fuser for a xerographic reproducing apparatus characterized by the provision of means for stripping the copy paper from the heated fuser roll. The stripping means is characterized by the provision of a plurality of bifurcated finger-like elements wherein an oil absorbent material is disposed between the portions forming the bifurcation for the purpose of removing excess release agent material at the leading edges of the fingerlike elements.
Inventors
- 👤 Willard C Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:49
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2028; Y; Y10; Y10S; Y10S271/00; Y10S271/90
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
111 words
Apparatus for affixing toner particles to a substrate, said apparatus comprising: a heated roll; a back-up roll forming a nip with said heated roll through which such substrate passes with said toner particles in contact with said heated roll; means for applying a material to said heated roll which minimizes the adherence of toner particles to said heated roll; and stripper means contacting said heated roll and disposed between said heated roll and said substrate for insuring movement of said substrate along a predetermined path, said stripper means including means for conveying excess amounts of said material away from the area of contact of said stripper means with said heated roll.
Claim 2
Dependent Claim
111 words
Apparatus for affixing toner particles to a substrate, said apparatus comprising: a heated roll; a back-up roll forming a nip with said heated roll through which such substrate passes with said toner particles in contact with said heated roll; means for applying a material to said heated roll which minimizes the adherence of toner particles to said heated roll; and stripper means contacting said heated roll and disposed between said heated roll and said substrate for insuring movement of said substrate along a predetermined path, said stripper means including means for conveying excess amounts of said material away from the area of contact of said stripper means with said heated roll.
Claim 3
Dependent Claim
11 words
Apparatus according to claim 1 wherein said material comprises silicone oil.
Claim 4
Dependent Claim
14 words
Apparatus according to claim 2 wherein said conveying means comprises an oil absorbent material.
Claim 5
Dependent Claim
24 words
Apparatus according to claim 3 wherein said stripper means comprises at least one bifurcated member having said oil absorbent material disposed in the bifurcation.
Claim 6
Dependent Claim
89 words
Mechanism for removing substrate material from a heated roll adapted to fuse toner particles thereto wherein the surface of the heated roll is provided with material for preventing adherence of the toner particles thereof, said mechanism comprising: at least one pickoff finger pivotally supported relative to said heated roll such that a leading edge thereof contacts the surface of the heated roll; and means associated with said at least one pickoff finger for absorbing excessive amounts of adherence-preventing material and conveying said excessive amounts away from said leading edge.
Claim 7
Dependent Claim
89 words
Mechanism for removing substrate material from a heated roll adapted to fuse toner particles thereto wherein the surface of the heated roll is provided with material for preventing adherence of the toner particles thereof, said mechanism comprising: at least one pickoff finger pivotally supported relative to said heated roll such that a leading edge thereof contacts the surface of the heated roll; and means associated with said at least one pickoff finger for absorbing excessive amounts of adherence-preventing material and conveying said excessive amounts away from said leading edge.
Claim 8
Dependent Claim
51 words
Apparatus according to claim 5 wherein said means associated with said at least one stripper finger comprises an elongated slot extending from said leading edge and communicating rearwardly of said leading edge with a relatively large aperture; and wherein said absorbing material is disposed in said elongated slot and said aperture.
Claim 9
Dependent Claim
12 words
Apparatus according to claim 6 wherein said adherence-preventing material comprises silicone Oil.
References Cited (Backward Citations)
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Cited
US2704026A
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US3405683A
Cited
US3537404A
Cited
US3660863A
Cited
US3718116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |