US3924945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for inductive imaging with simultaneous polar ink development
Assignee: Xerox Corp
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Filing: 1974-12-03
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Granted: 1975-12-09
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Expires: 1994-12-03
Abstract
Abstract An electrostatographic imaging apparatus for induction imaging of a dielectric material with simultaneous polar ink development, using a patterned polar ink applicator electrically biased with respect to a transparent conductive support base, bearing a photoconductor, with which the dielectric is in contact, in response to an image pattern projected onto the photoconductor through the support base.
Inventors
- 👤 John W Weigl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:51
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/226; G03G15/227; G03G15/06; G03G15/10; G03G15/101; G03G15/102; G03G15/34; G03G2215/00; G03G2215/04; G03G2215/0497
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
144 words
An electrostatographic imaging apparatus, comprising: a photoconductor assembly comprising a photoconductive material having a conductive, essentially transparent support base; means for uniformly frontally contacting said photoconductor assembly with a dielectric sheet; means for projecting a light and shadow image pattern through said support base of said photoconductor assembly to expose said photoconductive material; means for applying concurrently with exposure, a polar liquid developer to the surface of the region of the dielectric sheet which is in uniform contact with the exposed photoconductor assembly, said means being electrically biased with respect to said photoconductive assembly conductive support base, and having a patterned surface of raised and depressed portions such that the polar liquid developer is carried in the depressed portions with the raised portions being substantially free of the developer; and means for transferring said developer from said dielectric sheet to an image copy member.
Claim 2
Dependent Claim
144 words
An electrostatographic imaging apparatus, comprising: a photoconductor assembly comprising a photoconductive material having a conductive, essentially transparent support base; means for uniformly frontally contacting said photoconductor assembly with a dielectric sheet; means for projecting a light and shadow image pattern through said support base of said photoconductor assembly to expose said photoconductive material; means for applying concurrently with exposure, a polar liquid developer to the surface of the region of the dielectric sheet which is in uniform contact with the exposed photoconductor assembly, said means being electrically biased with respect to said photoconductive assembly conductive support base, and having a patterned surface of raised and depressed portions such that the polar liquid developer is carried in the depressed portions with the raised portions being substantially free of the developer; and means for transferring said developer from said dielectric sheet to an image copy member.
Claim 3
Dependent Claim
35 words
The apparatus of claim 1 wherein said photoconductive assembly conductive support base is comprised of an essentially transparent conductive material, adjacent the photoconductive material, and an essentially transparent insulative support material, adjacent said conductive material.
Claim 4
Dependent Claim
18 words
The apparatus of claim 1 wherein said photoconductive assembly is in the form of a rotatable, cylindrical drum.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |