US3748034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manifold imaging machine
Assignee: Xerox Corp
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Filing: 1971-01-06
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Granted: 1973-07-24
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Expires: 1991-01-06
Abstract
Abstract An apparatus is disclosed for use in the manifold imaging process wherein a rotatably mounted drum shaped electrode is contacted by an electrically photosensitive imaging layer residing on a substrate. The substrate is directed in a predetermined path bringing the electrode and the imaging layer into contact during the rotation of the drum. During rotation an electrical device places an electrical potential across the imaging layer while an optical arrangement permits exposure of the imaging layer to imagewise pattern of electromagnetic radiation to which the imaging layer is sensitive either before or while in contact with the rotatable electrode. Subsequent to exposure the substrate is separated from the rotatable electrode whereupon the imaging layer fractures in imagewise configuration conforming to the imagewise exposure of the imaging layer providing a positive image on one of the substrates and electrodes and a negative image on the other. The image residing on the rotatable electrode is removed and the electrode is rotated to receive additional imaging layer for the production of additional copies.
Inventors
- 👤 R Luebbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:43
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
179 words
An imaging apparatus wherein an electrically photosensitive imaging layer residing on a web is fractured in imagewise configuration in response to the combined effects of an applied electric field and exposure to electromagnetic radiation to which it is sensitive comprising an opaque rotatably mounted electrode web forwarding means to bring said electrically photosensitive imaging layer synchronously into contact with said electrode over a portion of said electrode sufficient to receive a complete synchronously projected imagewise pattern of said electromagnetic radiation, means to expose said imaging layer to sAid pattern of electromagnetic radiation while said layer is in contact with said electrode, means to separate said web from said electrode whereby said imaging layer fractures in imagewise configuration providing a positive image on one of said web and electrode and a negative image on the other, said image on said electrode retaining an electrostatic charge, means, including said rotatable electrode, to apply an electric field across said imaging layer during said exposure and separation of said web from said electrode and means to electrostatically remove said image from said electrode.
Claim 2
Dependent Claim
179 words
An imaging apparatus wherein an electrically photosensitive imaging layer residing on a web is fractured in imagewise configuration in response to the combined effects of an applied electric field and exposure to electromagnetic radiation to which it is sensitive comprising an opaque rotatably mounted electrode web forwarding means to bring said electrically photosensitive imaging layer synchronously into contact with said electrode over a portion of said electrode sufficient to receive a complete synchronously projected imagewise pattern of said electromagnetic radiation, means to expose said imaging layer to sAid pattern of electromagnetic radiation while said layer is in contact with said electrode, means to separate said web from said electrode whereby said imaging layer fractures in imagewise configuration providing a positive image on one of said web and electrode and a negative image on the other, said image on said electrode retaining an electrostatic charge, means, including said rotatable electrode, to apply an electric field across said imaging layer during said exposure and separation of said web from said electrode and means to electrostatically remove said image from said electrode.
Claim 3
Dependent Claim
47 words
The apparatus of claim 1 further including means to urge said substrate toward said rotatable electrode over a portion of said electrode comprising conductive electrode means associated with an independent power supply whereby the electric field across said imaging layer can be modified subsequent to its exposure.
Claim 4
Dependent Claim
14 words
The apparatus of claim 1 further including means for cleaning said rotatably mounted electrode.
Claim 5
Dependent Claim
51 words
The apparatus of claim 1 wherein the forwarding means to bring an electrically photosensitive imaging layer into contact with said electrode comprises a web forwarding means including a web feeding roll, at least one pressure roll adapted to urge said web toward said rotatably mounted electrode and a web take-up roll.
Claim 6
Dependent Claim
25 words
The apparatus of claim 1 further including means to apply an activator to said imaging layer prior to its separation from said rotatably mounted electrode.
Claim 7
Dependent Claim
59 words
The apparatus of claim 1 wherein said means to remove said image from said rotatable electrode comprises a continuous web, a web feeding means, pressure means to press said web against said image on said rotatably mounted electrode said pressure means including at least one biased roller and means to separate said transfer web from said rotatably mounted electrode.
Claim 8
Dependent Claim
17 words
The apparatus of claim 6 further including means to apply an activator fluid to said transfer web.
Claim 9
Dependent Claim
18 words
The apparatus of claim 6 further including a fixing means to fix said image on said transfer web.
Claim 10
Dependent Claim
196 words
An imaging apparatus wherein an electrically photosensitive imaging layer residing on a web is fractured in imagewise configuration in response to the combined effects of an applied electric field and exposure to electromagnetic radiation to which said layer is sensitive comprising an opaque rotatably mounted electrode, forwarding means to bring said imaging layer synchronously into contact with said electrode, means to electrostatically charge said imaging layer in its path of travel prior to contact with said electrode, said rotatable electrode having common potential with one electrode of said charging means whereby an electric field is placed across said imaging layer while it is in contact with said electrode, exposure means to expose said imaging layer to an imagewise pattern of electromagnetic radiation to which said layer is sensitive in its path of travel between said electrostatic charging means and said electrode, means to separate said web from said rotatable electrode whereby said imaging layer fractures in image-wise configuration providing a positive image on one of said web and rotatable electrode and a negative on the other, said image on said rotatable electrode retaining an electrostatic charge, and means to electrostatically remove said image from said electrode.
Claim 11
Dependent Claim
196 words
An imaging apparatus wherein an electrically photosensitive imaging layer residing on a web is fractured in imagewise configuration in response to the combined effects of an applied electric field and exposure to electromagnetic radiation to which said layer is sensitive comprising an opaque rotatably mounted electrode, forwarding means to bring said imaging layer synchronously into contact with said electrode, means to electrostatically charge said imaging layer in its path of travel prior to contact with said electrode, said rotatable electrode having common potential with one electrode of said charging means whereby an electric field is placed across said imaging layer while it is in contact with said electrode, exposure means to expose said imaging layer to an imagewise pattern of electromagnetic radiation to which said layer is sensitive in its path of travel between said electrostatic charging means and said electrode, means to separate said web from said rotatable electrode whereby said imaging layer fractures in image-wise configuration providing a positive image on one of said web and rotatable electrode and a negative on the other, said image on said rotatable electrode retaining an electrostatic charge, and means to electrostatically remove said image from said electrode.
Claim 12
Dependent Claim
40 words
An apparatus of claim 9 wherein the means to apply an electric field across the imaging layer comprises a corona discharge device adapted to deposit an electric charge on said web, said device having a common ground with said electrode.
Claim 13
Dependent Claim
16 words
The apparatus of claim 9 further including means to apply an activator to said imaging layer.
Claim 14
Dependent Claim
40 words
The apparatus of claim 11 wherein said means to apply comprises a fluid reservoir, a rotatably mounted cylinder adapted to enter and leave said reservoir and to deposit activator fluid on said rotatably mounted electrode in its path of rotation.
References Cited (Backward Citations)
US3615393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |