US4085702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Offset prevention during fixing
Assignee: Eastman Kodak Co
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Filing: 1976-03-29
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Granted: 1978-04-25
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Expires: 1996-03-29
Abstract
Abstract A contact fixing device for fixing electrostatic marking particles carried on a support material is disclosed. The device includes a rotatably mounted fixing roller, a container for a supply of offset preventing material and applicator means for spraying the offset preventing material directly onto the peripheral surface of the fixing roller. Control means are provided for activating the applicator means after a predetermined period of operation of the fixing roller.
Inventors
- 👤 James William Consaul
- 👤 Thomas Arthur Jadwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:30
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
In a device for contact fixing electrostatic marking particles carried on a support material, said fixing device being of the type including a member having a fixing surface and a container for a supply of offset preventing material, the improvement comprising applicator means for distributing offset preventing material having a viscosity of at least approximately 10,000 centistokes from said container onto the fixing surface of the member without physically contacting the fixing surface of the member by said applicator means.
Claim 2
Dependent Claim
80 words
In a device for contact fixing electrostatic marking particles carried on a support material, said fixing device being of the type including a member having a fixing surface and a container for a supply of offset preventing material, the improvement comprising applicator means for distributing offset preventing material having a viscosity of at least approximately 10,000 centistokes from said container onto the fixing surface of the member without physically contacting the fixing surface of the member by said applicator means.
Claim 3
Dependent Claim
67 words
In a device for contact fixing electrostatic marking particles carried on a support material, said fixing device being of the type including a member having a fixing surface and a container for a supply of offset preventing material, the improvement comprising applicator means for spraying offset preventing material having a viscosity of at least approximately 10,000 centistokes from said container onto the fixing surface of the member.
Claim 4
Dependent Claim
67 words
In a device for contact fixing electrostatic marking particles carried on a support material, said fixing device being of the type including a member having a fixing surface and a container for a supply of offset preventing material, the improvement comprising applicator means for spraying offset preventing material having a viscosity of at least approximately 10,000 centistokes from said container onto the fixing surface of the member.
Claim 5
Dependent Claim
57 words
The improvement as defined in claim 2 wherein said applicator means comprises: means for directing a stream of propellant gas toward the member; and an aspirator device associated with the container and said gas stream directing means for injecting said offset preventing material, which has been prepared as an emulsion of water-like viscosity, into said gas stream.
Claim 6
Dependent Claim
57 words
The improvement as defined in claim 2 wherein said applicator means is selectively operable and further comprising control means for operating said applicator means after a predetermined period of fixing device use, whereby a predetermined quantity of offset preventing material is sprayed onto the fixing surface in accordance with the frequency of operation of the fixing device.
Claim 7
Dependent Claim
23 words
The improvement as defined in claim 2 wherein said applicator means comprises a plurality of spray devices spaced axially along the fixing surface.
Claim 8
Dependent Claim
21 words
The improvement as defined in claim 2 wherein said applicator means comprises a spray device movable axially alonge the fixing 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) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |