US3861860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry fuser roll cleaning apparatus
Assignee: Xerox Corp
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Filing: 1973-10-01
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Granted: 1975-01-21
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Expires: 1993-10-01
Abstract
Abstract Cleaning apparatus for a dry heated pressure fusing system comprising a roll including a rigid core member covered with a sleeve made of a polyester polymer material. The roll is movable into pressure contact with the heated fuser roll during the fusing operation. Upon raising the temperature of the polyester polymer material toner and other contaminants are physically removed from the fuser roll surface and do not retransfer. An alternative embodiment calls for a soft deformable blanket to be positioned intermediate the core member and sleeve.
Inventors
- 👤 Raghulinga R Thettu
- 👤 Robert Mermelstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:02
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
IN A DRY HEATED PRESSURE FUSING SYSTEM FOR FUSING TONER IMAGES OF AN ELECTROSTATIC COPYING MACHINE IN WHICH A HEATED DRY FUSER ROLL AND BACK-UP ROLL DEFINE A CONTACT ARC TO THE TONER IMAGES ONTO COPY SHEETS, AN IMPROVED CLEANING APPARATUS TO RELEASE DEGRADING CONTAMINANTS AND TONER FROM THE FUSER ROLL SURFACE COMPRISING: ROLL MEANS MOVABLE INTO PRESSURE CONTACT WITH A DRY HEATED FUSER ROLL SURFACE DURING THE COPYING OPERATION; SAID ROLL MEANS INCLUDING A RIGID CORE MEMBER COVERED BY A SLEEVE MADE OF A POLYMER MATERIAL SELECTED FROM THE GROUP OF ALIPHATIC, AROMATIC, OR MIXTURES OR ALIPHATIC, AROMATIC POLYESTER, WHEREIN SAID POLYSTER MATERIAL HAS A MELTING OR SOFTENING POINT RANGING FROM ABOUT 120*C TO ABOUT 275*C, WHEREIN SAID SLEEVE HAS A THICKNESS RANGING FROM ABOUT 0.005 TO ABOUT 0.030 INCHES, WHEREIN SAID ROLL MEANS IS RETRACTABLE OUT OF PRESSURE CONTACT WITH SAID FUSER ROLL SURFACE DURING NON-FUSING PERIODS.
Claim 2
Dependent Claim
149 words
IN A DRY HEATED PRESSURE FUSING SYSTEM FOR FUSING TONER IMAGES OF AN ELECTROSTATIC COPYING MACHINE IN WHICH A HEATED DRY FUSER ROLL AND BACK-UP ROLL DEFINE A CONTACT ARC TO THE TONER IMAGES ONTO COPY SHEETS, AN IMPROVED CLEANING APPARATUS TO RELEASE DEGRADING CONTAMINANTS AND TONER FROM THE FUSER ROLL SURFACE COMPRISING: ROLL MEANS MOVABLE INTO PRESSURE CONTACT WITH A DRY HEATED FUSER ROLL SURFACE DURING THE COPYING OPERATION; SAID ROLL MEANS INCLUDING A RIGID CORE MEMBER COVERED BY A SLEEVE MADE OF A POLYMER MATERIAL SELECTED FROM THE GROUP OF ALIPHATIC, AROMATIC, OR MIXTURES OR ALIPHATIC, AROMATIC POLYESTER, WHEREIN SAID POLYSTER MATERIAL HAS A MELTING OR SOFTENING POINT RANGING FROM ABOUT 120*C TO ABOUT 275*C, WHEREIN SAID SLEEVE HAS A THICKNESS RANGING FROM ABOUT 0.005 TO ABOUT 0.030 INCHES, WHEREIN SAID ROLL MEANS IS RETRACTABLE OUT OF PRESSURE CONTACT WITH SAID FUSER ROLL SURFACE DURING NON-FUSING PERIODS.
Claim 3
Dependent Claim
23 words
Apparatus according to claim 1 including a cylindrical member made of a soft conformable material positioned intermediate said core member and said sleeve.
Claim 4
Dependent Claim
24 words
Apparatus according to claim 2 wherein said soft conformable material is selected from the group consisting of Nomex, Dacron, silicone rubber or combinations thereof.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |