Patent US3900346A successfully refreshed from Google Patents.
Patent US3744897A successfully refreshed from Google Patents.
US3744897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent electrode for electrophoretic imaging
Assignee: Xerox Corp
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Filing: 1971-05-26
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Granted: 1973-07-10
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Expires: 1991-05-26
Abstract
Abstract Apparatus for improved imaging and for eliminating corona arcing in an electrophoretic imaging system employing a transparent electrode having electrically conductive transparent portions causing variations in the surface potential of the electrode under the influence of an electrical field. The electrode functions within an imaging system also having a means to illuminate the conductive portions for forming an image in a confined electrical field in a manner preventing corona arcing between electrodes of the imaging system.
Inventors
- 👤 R Gundlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:16
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A plate electrode which will produce a varying electrical field within an electrophoretic imaging contact zone established in an area between the plate electrode and a second electrode when a uniform electrical potential is applied across the two electrodes, the plate electrode comprising: a. a transparent electrically insulating base; and b. transparent electrically conductive means intimately attached to one surface of said base for varying the electrical field within an imaging contact zone when a uniform electrical potential is applied to said transparent electrically conductive means.
Claim 2
Dependent Claim
86 words
A plate electrode which will produce a varying electrical field within an electrophoretic imaging contact zone established in an area between the plate electrode and a second electrode when a uniform electrical potential is applied across the two electrodes, the plate electrode comprising: a. a transparent electrically insulating base; and b. transparent electrically conductive means intimately attached to one surface of said base for varying the electrical field within an imaging contact zone when a uniform electrical potential is applied to said transparent electrically conductive means.
Claim 3
Dependent Claim
25 words
Plate electrode according to claim 1 wherein said conductive means comprises peaks and troughs of transparent electrically conductive material intimately bonded to said insulating base.
Claim 4
Dependent Claim
25 words
Plate electrode according to claim 2 wherein said troughs include relatively electrically insulating material overcoating the electrically conductive material therein to form a smooth surface.
Claim 5
Dependent Claim
20 words
Plate electrode according to claim 1 wherein said insulating base includes a plurality of grooves formed on one surface thereon.
Claim 6
Dependent Claim
26 words
Plate electrode according to claim 4 wherein said conductive means comprises a plurality of disconnected electrically conductive portions placed in the grooves of said insulating base.
Claim 7
Dependent Claim
50 words
Plate electrode according to claim 5 further comprising: a. means to electrically isolate a portion of said plate electrode in the contact zone; and b. means to electrically activate said isolated portion of said plate electrode to limit the applied electrical field between said isolated portion and a second electrode.
Claim 8
Dependent Claim
24 words
Plate electrode according to claim 1 wherein said conductive means comprises a plurality of disconnected, separated conductive portions intimately bonded to said insulating base.
Claim 9
Dependent Claim
29 words
Plate electrode according to claim 7 having relatively electrically insulating material placed between said separated conductive portions to form a smooth surface of alternating conductive and insulating portions thereon.
Claim 10
Dependent Claim
50 words
Plate electrode according to claim 8 further comprising a lenticular film on said transparent base on the surface opposite the surface having the transparent conductive means, said film positioned to the capability of gathering light striking it and refracting such light toward the conductive portions along the plate electrode surface.
References Cited (Backward Citations)
US3653890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |