US3607258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic plate and process
Assignee: Xerox Corp
•
Filing: 1966-01-06
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Granted: 1971-09-21
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Expires: 1986-01-06
Abstract
Abstract A photoconductive plate comprising a photoconductive charge transfer complex composition overcoated with a thin layer of an insulating material, preferably less than one micron thick, is disclosed. The use of this photoconductive plate in an electrostatic imaging capacity is further disclosed.
Inventors
- 👤 Helmut Hoegl
- 👤 Giacomo Barchietto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:14
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G5/02; G03G5/142; G03G5/14708; G03G5/14713; G03G5/14717; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
21 words
The electrophotographic plate as described in claim 1 wherein said insulating polymer has a thickness of up to about 1 micron.
Claim 2
Dependent Claim
61 words
An electrophotographic imaging process comprising: a. forming an electrostatic latent image on the surface of a photoconductive plate said plate comprising a photoconductive charge-transfer complex composition having superimposed thereon in the form of a pattern of spaced dots a thin layer of an insulating polymer; and b. developing said latent image with electrically attractable marking particles to produce a visible image.
Claim 3
Dependent Claim
67 words
An electrophotographic imaging process comprising uniformly charging the surface of a photoconductive plate comprising a photoconductive charge-transfer complex composition having superimposed on the surface thereof an insulating polymer in the form of a pattern of spaced dots, selectively exposing said photoconductive plate to a light source thereby producing an electrostatic latent image and developing said latent image with electrically attractable marking particles to produce a visible image.
Claim 4
Dependent Claim
19 words
The process as disclosed in claim 4 wherein said insulating polymer ranges in thickness up to about 1 micron.
References Cited (Backward Citations)
US2599542A
Cited
US2901348A
Cited
US2860048A
Cited
US3287123A
Cited
US3196011A
Cited
US3341326A
Cited
US3394001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |