US3929096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll fuser
Assignee: Xerox Corp
•
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 a sump of release agent material which material coats the fuser roll structure. A polymer covered cleaning member immersed in the release agent material contacts the fuser roll structure for removing non-visual toner and other contaminates offset thereto during the reproduction process.
Inventors
- 👤 Raghulinga R Thettu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:26
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
Roll fuser apparatus for fixing toner images to support members comprising: a metal fuser member; a resilient fuser member forming a nip with said metal fuser member through which said support members move; a sump containing a quantity of release agent material; and a cleaning member supported for contacting the surface of said metal fuser member, said cleaning member being immersed in said release agent material.
Claim 2
Dependent Claim
66 words
Roll fuser apparatus for fixing toner images to support members comprising: a metal fuser member; a resilient fuser member forming a nip with said metal fuser member through which said support members move; a sump containing a quantity of release agent material; and a cleaning member supported for contacting the surface of said metal fuser member, said cleaning member being immersed in said release agent material.
Claim 3
Dependent Claim
15 words
Apparatus according to claim 1, wherein said cleaning member comprises a polymer covered roll structure.
Claim 4
Dependent Claim
26 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.
Claim 5
Dependent Claim
12 words
Apparatus according to claim 3, wherein said release agent material comprises polyethylene.
Claim 6
Dependent Claim
16 words
Apparatus according to claim 4 including means for preventing bead formation on the fuser roll structure.
Claim 7
Dependent Claim
12 words
Apparatus according to claim 5, wherein said fuser members comprise roll structures.
References Cited (Backward Citations)
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Cited
US3716018A
Cited
US3649992A
Cited
US3716221A
Cited
US3811821A
Cited
US3810776A
Cited
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 |