US4056314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid ink imaging system
Assignee: Xerox Corp
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Filing: 1976-06-04
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Granted: 1977-11-01
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Expires: 1996-06-04
Abstract
Abstract An electrostatographic imaging apparatus is disclosed. The imaging apparatus includes a photoconductor assembly; means for positioning the inner surface of a dielectric web against the photoconductor whereby an air gap is formed between the photoconductor and the web; charging and exposing means; second charging means to neutralize the first charge; a conductive roller having an insulating coating thereon, the roller being biased at a potential sufficient to prevent charge transfer from the photoconductor to the web; a liquid developing system; and means for transferring the developed image from the web to an image copy member.
Inventors
- 👤 Morton Silverberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:02
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
An electrostatic imaging apparatus comprising: a photoconductor assembly; means for positioning the inner surface of a dielectric web against said photoconductor whereby an air gap is formed between said photoconductor and said web; first charging means for applying a charge to the outer surface of said web; means for exposing a light pattern through said web, whereby the air gap is ionized and forms a latent image on the inner surface of the web; second charging means for applying a charge to the outer surface of said web sufficient to neutralize said first charge; means for guiding the latent image bearing web away from the photoconductor, including, a conductive roller, having an insulating coating thereon, said roller being biased at a potential sufficient to prevent charge transfer from said assembly to said web; a liquid developing system for developing the latent image on said web; and means for transferring said developed image from said web to an image copy member.
Claim 2
Dependent Claim
160 words
An electrostatic imaging apparatus comprising: a photoconductor assembly; means for positioning the inner surface of a dielectric web against said photoconductor whereby an air gap is formed between said photoconductor and said web; first charging means for applying a charge to the outer surface of said web; means for exposing a light pattern through said web, whereby the air gap is ionized and forms a latent image on the inner surface of the web; second charging means for applying a charge to the outer surface of said web sufficient to neutralize said first charge; means for guiding the latent image bearing web away from the photoconductor, including, a conductive roller, having an insulating coating thereon, said roller being biased at a potential sufficient to prevent charge transfer from said assembly to said web; a liquid developing system for developing the latent image on said web; and means for transferring said developed image from said web to an image copy member.
Claim 3
Dependent Claim
42 words
The apparatus of claim 1 where said liquid developing system includes a gravure development roller for applying the liquid ink to said web, the gravure roller being biased at voltage substantially the same as the bias voltage applied to said conductive roller.
Claim 4
Dependent Claim
27 words
The apparatus of claim 1 wherein said means for forming said air gap comprises a plurality of randomly positioned spacers on the top surface of said assembly.
Claim 5
Dependent Claim
18 words
The apparatus of claim 1 wherein said photoconductor 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) | 1980-10-31 | 1981-05-02 | 1981-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-31 | 1985-05-02 | 1985-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-31 | 1989-05-02 | 1989-11-01 | $7700.00 | Window Closed / Lapsed |