US3612864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging system utilizing an electrode treated with a mixture of a hygroscopic material and a hydrophilic binder
Assignee: Xerox Corp
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Filing: 1968-12-18
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Granted: 1971-10-12
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Expires: 1988-12-18
Abstract
Abstract A corona discharge system comprising a filament treated with a hygroscopic material or a mixture of a hygroscopic material and a hydrophilic binder is employed for charging electrophotographic imaging surfaces.
Inventors
- 👤 Yasuo Tamai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:36
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/02; G03G15/0291; H; H01; H01T; H01T19/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
43 words
A corona discharge electrode in a corona discharge device comprising a filament core treated with a composition comprising a hygroscopic material and a hydrophilic binder combined with a potential source connected to said electrode for generating corona discharge from said corona discharge electrode.
Claim 2
Dependent Claim
43 words
A corona discharge electrode in a corona discharge device comprising a filament core treated with a composition comprising a hygroscopic material and a hydrophilic binder combined with a potential source connected to said electrode for generating corona discharge from said corona discharge electrode.
Claim 3
Dependent Claim
15 words
A corona discharge electrode according to claim 1 wherein said filament core comprises organic material.
Claim 4
Dependent Claim
15 words
A corona discharge electrode according to claim 2 wherein said filament core is a thread.
Claim 5
Dependent Claim
16 words
A corona discharge electrode according to claim 1 wherein said filament core comprises a conductive metal.
Claim 6
Dependent Claim
21 words
A corona discharge electrode according to claim 1 wherein said filament core has a diameter of less than about 0.25 millimeter.
Claim 7
Dependent Claim
15 words
A corona discharge electrode according to claim 5 wherein said diameter is about 0.1 millimeter.
Claim 8
Dependent Claim
16 words
A corona discharge electrode according to claim 1 wherein said hygroscopic material is a deliquescent compound.
Claim 9
Dependent Claim
15 words
A corona discharge electrode according to claim 7 wherein said deliquescent compound comprises lithium chloride.
Claim 10
Dependent Claim
20 words
A corona discharge electrode according to claim 1 wherein said hygroscopic material comprises a mixture of lithium chloride and glycerine.
Claim 11
Dependent Claim
41 words
A corona discharge electrode in a corona discharge device comprising a conductive metal filament core treated with a composition comprising a hygroscopic material combined with a potential source connected to said electrode for generating corona discharge from said corona discharge electrode.
Claim 12
Dependent Claim
41 words
A corona discharge electrode in a corona discharge device comprising a conductive metal filament core treated with a composition comprising a hygroscopic material combined with a potential source connected to said electrode for generating corona discharge from said corona discharge electrode.
Claim 13
Independent Claim
117 words
A method of rapidly imposing an electrostatic charge on an electrostatographic insulating surface comprising supporting an imaging layer on a conductive backing member, said layer having an electrostatographic insulating surface on the opposite side of said layer from the interface of said layer with said conductive backing member, positioning at least one corona discharge electrode adjacent to but spaced from said electrostatographic insulating surface, said corona discharge electrode comprising a conductive metal filament core treated with a composition comprising a hygroscopic material, and applying a sufficient electrical potential between said corona discharge electrode and said conductive backing member to generate corona discharge from said corona discharge electrode thereby imposing an electrostatic charge on said electrostatographic insulating surface.
Claim 14
Independent Claim
117 words
A method of rapidly imposing an electrostatic charge on an electrostatographic insulating surface comprising supporting an imaging layer on a conductive backing member, said layer having an electrostatographic insulating surface on the opposite side of said layer from the interface of said layer with said conductive backing member, positioning at least one corona discharge electrode adjacent to but spaced from said electrostatographic insulating surface, said corona discharge electrode comprising a conductive metal filament core treated with a composition comprising a hygroscopic material, and applying a sufficient electrical potential between said corona discharge electrode and said conductive backing member to generate corona discharge from said corona discharge electrode thereby imposing an electrostatic charge on said electrostatographic insulating surface.
Claim 15
Independent Claim
119 words
A method of rapidly imposing an electrostatic charge on an electrostatographic insulating surface comprising supporting an imaging layer on a conductive backing member, said layer having an electrostatographic insulating surface on the opposite side of said layer from the interface of said layer with said conductive backing member, positioning at least one corona discharge electrode adjacent to but spaced from said electrostatographic insulating surface, said corona discharge electrode comprising a filament core treated with a composition comprising a hygroscopic material and a hydrophilic binder, and applying a sufficient electrical potential between said corona discharge electrode and said conductive backing member to generate corona discharge from said corona discharge electrode thereby imposing an electrostatic charge on said electrostatographic insulating surface.
Claim 16
Independent Claim
119 words
A method of rapidly imposing an electrostatic charge on an electrostatographic insulating surface comprising supporting an imaging layer on a conductive backing member, said layer having an electrostatographic insulating surface on the opposite side of said layer from the interface of said layer with said conductive backing member, positioning at least one corona discharge electrode adjacent to but spaced from said electrostatographic insulating surface, said corona discharge electrode comprising a filament core treated with a composition comprising a hygroscopic material and a hydrophilic binder, and applying a sufficient electrical potential between said corona discharge electrode and said conductive backing member to generate corona discharge from said corona discharge electrode thereby imposing an electrostatic charge on said electrostatographic insulating surface.
Claim 17
Dependent Claim
13 words
A method according to claim 12 wherein said filament core comprises organic material.
Claim 18
Dependent Claim
14 words
A method according to claim 12 wherein said hygroscopic material is a deliquescent compound.
Claim 19
Dependent Claim
68 words
A corona discharge electrode in a corona discharge device comprising a filament core having a diameter of less than about 0.25 millimeter covered with a coating consisting essentially of a hygroscopic material and a hydrophilic binder, said coating having a thickness when dry between about 0.5 and about 200 microns combined with a potential source connected to said electrode for generating corona discharge from said corona discharge electrode.
Claim 20
Dependent Claim
68 words
A corona discharge electrode in a corona discharge device comprising a filament core having a diameter of less than about 0.25 millimeter covered with a coating consisting essentially of a hygroscopic material and a hydrophilic binder, said coating having a thickness when dry between about 0.5 and about 200 microns combined with a potential source connected to said electrode for generating corona discharge from said corona discharge electrode.
References Cited (Backward Citations)
US3506561A
Cited
US3370212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |