US4309957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wick for dispensing fuser oil
Assignee: Xerox Corp
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Filing: 1977-01-03
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Granted: 1982-01-12
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Expires: 1997-01-03
Abstract
Abstract An improved fluid applicating wick for use in applying release fluids to a fuser member surface of a fusing system for fusing toner images is described. The wick comprises a working surface material which contacts the fuser member surface, and a backing material to which the working surface material is needled. A preferred fluid applicating wick comprises a layer of Teflon felt or fiber as a working surface material is needled to a fibrous or felted Nomex material.
Inventors
- 👤 Joseph A. Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:20
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
118 words
In a fuser assembly where toner images produced by an electrostatic imaging and development system are fused by the application of heat and pressure comprising a fuser member, a pressure member, means to heat the fuser member, and wicking means to apply a release fluid on the surface of the fuser member, the improvement comprising a composite wicking material comprising a first layer which contacts the fuser member surface and a second layer adjacent the first layer and in contact therewith, the first and second layers having different compositions, with at least some of the material of at least one of the layers being forcefully driven into the material of the other layer by the process of needling.
Claim 2
Dependent Claim
118 words
In a fuser assembly where toner images produced by an electrostatic imaging and development system are fused by the application of heat and pressure comprising a fuser member, a pressure member, means to heat the fuser member, and wicking means to apply a release fluid on the surface of the fuser member, the improvement comprising a composite wicking material comprising a first layer which contacts the fuser member surface and a second layer adjacent the first layer and in contact therewith, the first and second layers having different compositions, with at least some of the material of at least one of the layers being forcefully driven into the material of the other layer by the process of needling.
Claim 3
Dependent Claim
68 words
The fuser assembly of claim 1 wherein the fuser member is a roll, the pressure member is a roll, the release fluid is a polysiloxane fluid, the composite wicking material comprises a fibrous polytetrafluoroethylene layer which contacts the fuser member surface and a fibrous heat resistant nylon adjacent the polytetrafluoroethylene layer and in contact therewith, and the fibrous polytetrafluoroethylene material is needled into the fibrous heat resistant nylon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |