US3723113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polychromatic electrosolographic imaging process
Assignee: Xerox Corp
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Filing: 1970-11-09
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Granted: 1973-03-27
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Expires: 1990-11-09
Abstract
Abstract A polychromatic migration imaging system is disclosed. Typically, a plate of a conductive substrate coated with a softenable insulating layer overcoated with a mixture of different colored photosensitive particles is electrostatically charged, and exposed to a polychromatic image. The softenable layer is softened, allowing selective migration of some particles to the substrate, resulting in a polychromatic image.
Inventors
- 👤 W Goffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:01
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/08; G03G13/00; G03G13/22; G03G17/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
14 words
The method of claim 1 further providing a substrate toward which said particles migrate.
Claim 2
Dependent Claim
24 words
The method of claim 1 wherein said insulating layer is softened by the application of vapors which are a solvent for said insulating layer.
Claim 3
Dependent Claim
40 words
The method of claim 2 wherein after said portions of said particles have migrated, a receiving sheet having an adhesive surface is pressed against said particulate layer and is stripped away, carrying with it the unmigrated portions of said particles.
Claim 4
Dependent Claim
50 words
The method of claim 2 wherein said insulating layer is softened by contacting said insulating layer with a liquid which is a solvent for said insulating layer but not for said substrate and said particles, whereby the unmigrated particles and a substantial portion of said insulating layer are washed away.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein said insulating layer is softened by the application of heat.
Claim 6
Dependent Claim
38 words
The method of claim 1 wherein said particulate layer comprises a mixture of cyan colored particles sensitive mainly to red light, magenta colored particles sensitive mainly to green light and yellow colored particles sensitive mainly to blue light.
Claim 7
Dependent Claim
25 words
The method of claim 1 wherein the electrically photosensitive particles are embedded within the free surface of said insulating layer in a thin non-continuous layer.
Claim 8
Dependent Claim
17 words
The method of claim 1 wherein the electrically photosensitive particles are dispersed throughout the insulating softenable layer.
Claim 9
Dependent Claim
21 words
The method of claim 1 wherein the insulating softenable layer has a thickness of from about 1 to about 4 microns.
Claim 10
Dependent Claim
17 words
The method of claim 2 wherein said substrate is provided during electrostatic charging of said softenable layer.
Claim 11
Dependent Claim
18 words
The method of claim 2 wherein said portion of said particles migrate to the surface of said substrate.
Claim 12
Dependent Claim
20 words
The method of claim 1 wherein the electrically photosensitive particles comprise a photoconductive outer coating over an inert inner core.
Claim 13
Dependent Claim
22 words
The method of claim 1 wherein said electrically photosensitive particles have an average particle size of from 0.01 to about 2 microns.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |