Patent US4050804A successfully refreshed from Google Patents.
US4050804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid ink imaging system
Assignee: Xerox Corp
•
Filing: 1976-06-04
•
Granted: 1977-09-27
•
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; a conductive roller which is 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
2026-10-29 23:22
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 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; 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; means for guiding the latent image bearing web away from the photoconductor, including a conductive roller, 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
134 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; 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; means for guiding the latent image bearing web away from the photoconductor, including a conductive roller, 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
43 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 a voltage substantially the same as the bias voltage applied to said conductive roller.
Claim 4
Dependent Claim
28 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 photoconductor 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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |