Patent US3929095A successfully refreshed from Google Patents.
US3929095A
Expired / Lapsed
US
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Roll fuser
Assignee: Xerox Corp
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Filing: 1975-01-02
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Granted: 1975-12-30
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Expires: 1995-01-02
Abstract
Abstract A contact fuser assembly for use in an electrostatic reproducing apparatus including an internally heated metal core cooperating with a resilient backup roll to form a nip through which substrates carrying toner images are moved with the toner images contacting the metal core. The fuser assembly is characterized by the provision of cleaning mechanism which collects nonvisual toner from the metal core as well as removing excess release agent material therefrom, the release agent material being applied to the surface of the core in order to enhance release of contaminates. The cleaning mechanism is characterized by the provision of thermally conductive members contacting the core, which members are cooled by positive cooling means.
Inventors
- 👤 Raghulinga R Thettu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:19
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
120 words
Fuser apparatus for fixing toner images to substrates through the utilization of heat and pressure, said apparatus comprising: a metal fuser roll member; a resilient member cooperating with said metal fuser member to form a nip through which said substrates pass to thereby soften said toner images; means for applying release agent material to the surface of said metal fuser member to facilitate removal of toner particles and other contaminates therefrom; cleaning means disposed adjacent said metal fuser member intermediate said nip and said release agent applying means and contacting said fuser member; and means for removing heat from said cleaning means to maintain the temperature thereof at a level which facilitates removal of toner particles from said fuser member.
Claim 2
Dependent Claim
120 words
Fuser apparatus for fixing toner images to substrates through the utilization of heat and pressure, said apparatus comprising: a metal fuser roll member; a resilient member cooperating with said metal fuser member to form a nip through which said substrates pass to thereby soften said toner images; means for applying release agent material to the surface of said metal fuser member to facilitate removal of toner particles and other contaminates therefrom; cleaning means disposed adjacent said metal fuser member intermediate said nip and said release agent applying means and contacting said fuser member; and means for removing heat from said cleaning means to maintain the temperature thereof at a level which facilitates removal of toner particles from said fuser member.
Claim 3
Dependent Claim
19 words
Apparatus according to claim 1, wherein said cleaning means comprise a plurality of spaced apart heat conductive wiper blades.
Claim 4
Dependent Claim
27 words
Apparatus according to claim 2, wherein said metal fuser member comprises an internal source of thermal energy and said toner images contact said metal fuser member. Pg,13
Claim 5
Dependent Claim
11 words
Apparatus according to claim 3, wherein said release material comprises polyethylene.
Claim 6
Dependent Claim
15 words
Apparatus according to claim 4, including means for preventing bead formation on said fuser member.
Claim 7
Dependent Claim
12 words
Apparatus according to claim 5, wherein said cleaning means comprises roll structures.
Claim 8
Dependent Claim
23 words
Apparatus according to claim 1, wherein said cleaning means comprises at least one structure supported for rolling contact with said metal fuser member.
Claim 9
Dependent Claim
26 words
Apparatus according to claim 7, wherein said metal fuser member comprises an internal source of thermal energy and said toner images contact said metal fuser member.
Claim 10
Dependent Claim
11 words
Apparatus according to claim 8, wherein said release material comprises polyethylene.
Claim 11
Dependent Claim
15 words
Apparatus according to claim 9, including means for preventing bead formation on said fuser member.
Claim 12
Dependent Claim
11 words
Apparatus according to claim 10, wherein said members comprise roll structures.
Claim 13
Dependent Claim
16 words
Apparatus according to claim 1, wherein said cleaning means comprises a pair of elastomer cleaning rolls.
Claim 14
Dependent Claim
16 words
Apparatus according to claim 1, wherein said cleaning means comprises a pair of metal roll structures.
Claim 15
Dependent Claim
17 words
Apparatus according to claim 12, wherein said cleaning rolls contain a polymer coating on the surface thereof.
Claim 16
Dependent Claim
17 words
Apparatus according to claim 13, wherein said roll structures contain a polymer coating on the surface thereof.
Claim 17
Dependent Claim
20 words
Apparatus according to claim 6, wherein said heat removing means heat pipe means fusing a part of said roll structures.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |