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Patent US4958172A successfully refreshed from Google Patents.
US4958172A
Expired / Lapsed
US
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Charge transfer imaging cartridge
Assignee: Delphax Technologies Inc
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Filing: 1989-08-22
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Granted: 1990-09-18
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Expires: 2009-08-22
Abstract
Abstract A charge transfer imaging cartridge features driver electrodes extending in a first direction and finger electrodes extending in a second direction and defining edge structure straddling the driver electrodes. The driver and finger electrodes are separated by a flexible dielectric layer, preferably a silicone modified polymer.
Inventors
- 👤 Robert S. McCallum
- 👤 Brian McIntosh
- 👤 Hemant Gandhi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:24
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/385; B41J2/39; B41J2/395; G; G03; G03G; G03G15/00; G03G15/22; G03G15/32; G03G15/321; G03G15/323
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
76 words
A charge transfer imaging cartridge comprising: a dielectric substrate; first electrodes extending in a first direction along one side of the substrate, said electrodes being continuous and without perforation; second electrodes extending in a second direction, the second electrodes defining apertures having edges where the first and second electrodes cross; and a continuous and imperforate dielectric layer separating the first and second electrodes, the layer being of a polymeric material containing particulate filler of a dielectric
Claim 2
Dependent Claim
76 words
A charge transfer imaging cartridge comprising: a dielectric substrate; first electrodes extending in a first direction along one side of the substrate, said electrodes being continuous and without perforation; second electrodes extending in a second direction, the second electrodes defining apertures having edges where the first and second electrodes cross; and a continuous and imperforate dielectric layer separating the first and second electrodes, the layer being of a polymeric material containing particulate filler of a dielectric
Claim 3
Dependent Claim
66 words
A charge transfer imaging cartridge comprising: a dielectric substrate; first electrodes extending in a first direction along one side of the substrate, said electrodes being continuous and without perforation; second electrodes extending in a second direction, the second electrodes defining apertures having edges where the first and second electrodes cross; and a continuous and imperforate silicone modified polymer dielectric layer separating the first and second electrodes.
Claim 4
Dependent Claim
66 words
A charge transfer imaging cartridge comprising: a dielectric substrate; first electrodes extending in a first direction along one side of the substrate, said electrodes being continuous and without perforation; second electrodes extending in a second direction, the second electrodes defining apertures having edges where the first and second electrodes cross; and a continuous and imperforate silicone modified polymer dielectric layer separating the first and second electrodes.
Claim 5
Dependent Claim
66 words
A charge transfer imaging cartridge comprising: a dielectric substrate; first electrodes extending in a first direction along one side of the substrate, said electrodes being continuous and without perforation; second electrodes extending in a second direction, the second electrodes defining apertures having edges where the first and second electrodes cross; and a continuous and imperforate silicone modified polyester/alkyd dielectric layer separating the first and second electrodes.
Claim 6
Dependent Claim
66 words
A charge transfer imaging cartridge comprising: a dielectric substrate; first electrodes extending in a first direction along one side of the substrate, said electrodes being continuous and without perforation; second electrodes extending in a second direction, the second electrodes defining apertures having edges where the first and second electrodes cross; and a continuous and imperforate silicone modified polyester/alkyd dielectric layer separating the first and second electrodes.
Claim 7
Independent Claim
99 words
A method of making a charge transfer imaging cartridge, comprising; providing a dielectric substrate having first electrodes extending in a first direction along one side thereof, the electrodes being continuous and without perforation; applying a layer of polymerizerable material in liquid form and containing particulate filler of a dielectric material to the substrate to cover the first electrodes; curing said layer; providing second electrodes defining openings having edges; and affixing said second electrodes to the cured layer such that the second electrodes extending in a second direction and the edges are positioned where the first and second electrodes cross.
Claim 8
Independent Claim
99 words
A method of making a charge transfer imaging cartridge, comprising; providing a dielectric substrate having first electrodes extending in a first direction along one side thereof, the electrodes being continuous and without perforation; applying a layer of polymerizerable material in liquid form and containing particulate filler of a dielectric material to the substrate to cover the first electrodes; curing said layer; providing second electrodes defining openings having edges; and affixing said second electrodes to the cured layer such that the second electrodes extending in a second direction and the edges are positioned where the first and second electrodes cross.
Claim 9
Independent Claim
94 words
A method of making a charge transfer imaging cartridge, comprising: providing a dielectric substrate having first electrodes extending in a first direction along one side thereof, the electrodes being continuous and without perforation; applying a layer of unpolymerized silicone modified polymer dielectric to the substrate to cover the first electrodes; curing said polymer dielectric layer; providing second electrodes defining openings having edges; and affixing said second electrodes to the cured dielectric layer such that the second electrodes extend in a second direction and the edges are positioned where the first and second electrodes cross.
Claim 10
Independent Claim
94 words
A method of making a charge transfer imaging cartridge, comprising: providing a dielectric substrate having first electrodes extending in a first direction along one side thereof, the electrodes being continuous and without perforation; applying a layer of unpolymerized silicone modified polymer dielectric to the substrate to cover the first electrodes; curing said polymer dielectric layer; providing second electrodes defining openings having edges; and affixing said second electrodes to the cured dielectric layer such that the second electrodes extend in a second direction and the edges are positioned where the first and second electrodes cross.
Claim 11
Independent Claim
81 words
A method of making a charge transfer imaging cartridge, comprising: providing a dielectric substrate having first electrodes extending in a first direction along one side thereof, the electrodes being continuous and without perforation; applying a layer of unpolymerized silicone modified polyester/alkyd dielectric to the substrate to cover the first electrodes; curing said polymer dielectric layer; providing second electrodes defining openings having edges; and affixing said second electrodes to the cured dielectric edges are positioned where the first and second electrodes cross.
Claim 12
Independent Claim
81 words
A method of making a charge transfer imaging cartridge, comprising: providing a dielectric substrate having first electrodes extending in a first direction along one side thereof, the electrodes being continuous and without perforation; applying a layer of unpolymerized silicone modified polyester/alkyd dielectric to the substrate to cover the first electrodes; curing said polymer dielectric layer; providing second electrodes defining openings having edges; and affixing said second electrodes to the cured dielectric edges are positioned where the first and second electrodes cross.
References Cited (Backward Citations)
US4467333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-17 | 1994-03-19 | 1994-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-17 | 1998-03-19 | 1998-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-17 | 2002-03-19 | 2002-09-18 | $7700.00 | Window Closed / Lapsed |