US3980424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuser cleaning roller
Assignee: Xerox Corp
•
Filing: 1975-04-28
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Granted: 1976-09-14
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Expires: 1995-04-28
Abstract
Abstract An improved cleaning roller for cleaning the residual toner particles from the heated fuser roll of a heated pressure fusing system in an electrostatic copy machine. The cleaning roller is mounted on a carriage supporting one or more cleaning rollers in contact with the surface of the heated fuser roll. A pressure loading mechanism applies a force on the carriage and cleaning rollers against the surface of the heated fuser roll. Each cleaning roller has a core member which is covered with a sleeve of soft suitable material such that under the pressure loading condition the surface of the cleaning roller conforms to that of the heated fuser roll. The exterior surface of each cleaning roller has a toner coating mixed with silicone oil to insure proper release of the residual toner from the heated fuser roll onto the cleaning roller.
Inventors
- 👤 Salvatore Latone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:51
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
166 words
In a fusing system for fusing toner images in an electrostatic copying machine in which a relatively hard heated roll surface is used to fix the toner images to copy sheet material an improved cleaning roll apparatus for cleaning toner offset onto the heated roll surface comprising: a carriage means including displaceable shaft means supporting at least one cleaning roller member at the ends thereof in contact with the heated roll surface to be cleaned, pressure loading means for urging said carriage means towards the heated roll surface to be cleaned at a predetermined pressure, said cleaning roller member including a core member said core member being covered by a sleeve made of urethane foam to conform to the surface of the heated roll to effect uniform cleaning thereof, said urethane foam sleeve being impregnated with silicone oil and exteriorly coated with a thermoplastic layer ranging from about 0.001 to about 0.005 inches to create sufficient surface energy to collect toner from the heated roll surface.
Claim 2
Dependent Claim
166 words
In a fusing system for fusing toner images in an electrostatic copying machine in which a relatively hard heated roll surface is used to fix the toner images to copy sheet material an improved cleaning roll apparatus for cleaning toner offset onto the heated roll surface comprising: a carriage means including displaceable shaft means supporting at least one cleaning roller member at the ends thereof in contact with the heated roll surface to be cleaned, pressure loading means for urging said carriage means towards the heated roll surface to be cleaned at a predetermined pressure, said cleaning roller member including a core member said core member being covered by a sleeve made of urethane foam to conform to the surface of the heated roll to effect uniform cleaning thereof, said urethane foam sleeve being impregnated with silicone oil and exteriorly coated with a thermoplastic layer ranging from about 0.001 to about 0.005 inches to create sufficient surface energy to collect toner from the heated roll surface.
Claim 3
Dependent Claim
162 words
In a fusing system for fusing toner images in an electrostatic copying machine in which a relatively hard heated roll surface is used to fix the toner images to copy sheet material an improved cleaning roll apparatus for cleaning toner offset onto the heated roll surface comprising: a carriage means including displaceable shaft means supporting at least one cleaning roller member at the ends thereof in contact with the heated roll surface to be cleaned, pressure loading means for urging said carriage means towards the heated roll surface to be cleaned at a predetermined pressure, said cleaning roller member including a core member said core member being covered by a sleeve made of silicone rubber to conform to the surface of the heated roll to effect uniform cleaning thereof, and said silicone rubber sleeve being exteriorly coated with a thermoplastic layer ranging from about 0.001 to about 0.005 inches to create sufficient surface energy to collect toner from the heated roll surface.
Claim 4
Dependent Claim
162 words
In a fusing system for fusing toner images in an electrostatic copying machine in which a relatively hard heated roll surface is used to fix the toner images to copy sheet material an improved cleaning roll apparatus for cleaning toner offset onto the heated roll surface comprising: a carriage means including displaceable shaft means supporting at least one cleaning roller member at the ends thereof in contact with the heated roll surface to be cleaned, pressure loading means for urging said carriage means towards the heated roll surface to be cleaned at a predetermined pressure, said cleaning roller member including a core member said core member being covered by a sleeve made of silicone rubber to conform to the surface of the heated roll to effect uniform cleaning thereof, and said silicone rubber sleeve being exteriorly coated with a thermoplastic layer ranging from about 0.001 to about 0.005 inches to create sufficient surface energy to collect toner from the heated roll surface.
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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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |