Patent US3631507A successfully refreshed from Google Patents.
US3631507A
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US
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Method of redistributing charge on a dielectric medium
Assignee: Xerox Corp
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Filing: 1969-09-29
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Granted: 1971-12-28
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Expires: 1989-09-29
Abstract
Abstract This application relates to an imaging system and method utilizing a conductive pin matrix for redistributing charge on a charge-dielectric surface which is placed in contact therewith. Conductivity between adjacent pins and therefore charge redistribution is controlled by means of a field-effect semiconductor layer and an electric field applied thereto, the presence of the electric field modifies the conductivity of the electrical path between adjacent pins through the field-effect semiconductor layer.
Inventors
- 👤 Benjamin Kazan
- 👤 Arthur W Vance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:48
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G15/00; G03G15/22; G03G15/32; G03G15/321
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
The method of claim 1 wherein said electric field is provided by establishing an electrostatic charge pattern in image configuration contiguous to said semiconductor layer said electrostatic charge pattern serving as the source of said electric field.
Claim 2
Independent Claim
130 words
A method of forming a latent electrostatic image on a dielectric surface comprising: providing a matrix of mutually insulated conductive elements imbedded in and extending through a first planar side of an insulating support layer; placing a layer of field-effect semiconductor material over a second planar side of said insulating support layer said field-effect semiconductor layer capable of displaying varying conductivity at volumes thereof in response to an image-configurated electric field imposed thereon, subjecting said field-effect semiconductor layer to an electric field in the configuration of an image; establishing discrete areas of electrostatic charge on a dielectric surface; and contacting the exposed ends of said matrix of conductive elements to the charged areas on said dielectric surface whereby said electrostatic charge is redistributed in accordance with said image-configurated electric field.
Claim 3
Dependent Claim
60 words
The method of claim 3 wherein said field-effect semicondUctor material is a storing field-effect semiconductor material having an exposed surface substantially parallel to second planar surface of said insulating support layer and said image configurated electric field is provided by establishing an electrostatic charge pattern on said exposed surface, said electrostatic charge pattern serving as the source of said field.
Claim 4
Dependent Claim
76 words
The method of claim 3 wherein said conductive element matrix structure further includes a second insulating layer in overlying contact with said field-effect semiconductor layer, said second insulating layer having an exposed surface substantially parallel to said planar surface of said insulating support layer said image-configurated electrical field being provided by establishing an electrostatic charge pattern on said exposed surface of said second insulating layer said electrostatic charge pattern serving as the source of said field.
Claim 5
Dependent Claim
34 words
The method of claim 3 including maintaining discrete areas of electrostatic charge on said dielectric surface at the same potential by grounding the back of said dielectric material to a grounded conductive backing member.
Claim 6
Dependent Claim
24 words
The method of claim 3 including maintaining said discrete areas of electrostatic charge on said dielectric surface alternating areas of positive and negative charge.
Claim 7
Dependent Claim
21 words
The method of claim 3 further including the step of making visible the redistributed, latent electrostatic image on said dielectric surface.
Claim 8
Dependent Claim
66 words
The method of claim 3 wherein steps of establishing discrete areas of electrostatic charge on said dielectric surface and contacting the ends of said conductive elements to the charged areas on said dielectric surface are repeated with at least one additional discretely charged dielectric surface whereby a plurality of redistributed, latent electrostatic images can be obtained from a single image-configurated electric field and in accordance therewith.
References Cited (Backward Citations)
US2547386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |