US3695755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrophoretic camera
Assignee: Xerox Corp
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Filing: 1970-10-28
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Granted: 1972-10-03
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Expires: 1990-10-28
Abstract
Abstract A camera employing the photoelectrophoretic process has a roller mounted to travel over a transparent flat plate. A disposable film sheet containing an ink pod is stretched over the flat plate and a disposable processor sheet is anchored at one end and coupled to the roller at the other. Photoelectrophoretic ink in the film sheet ink pod is spread over the film sheet when the roller is moved across the film sheet. The ink between the processor and film sheets is exposed to light and electric field as the roller travels over the flat plate thereby forming images on the film sheet and the processor sheet. The processor sheet is wound onto the roller during the travel of the roller over the flat plate.
Inventors
- 👤 Raymond K Egnaczak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:55
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
Photoelectrophoretic imaging apparatus comprising a plate, a film sheet positioned over said plate having an image forming portion and a rupturable pod for containing photoelectrophoretic ink, a roller supported for rotational and translational movement relative to said plate for rupturing said rupturable pod and for spreading ink contained within said rupturable pod, a processor sheet adjacent said film sheet fixedly anchored at one end relative to said plate and coupled to said roller at the other end so as to be wound onto said roller as said roller moves across said plate and unwound from said roller as said roller returns near its initial position, means for coupling a voltage difference between said roller and said plate across said ink between said sheets to cause particle deposition and migration, and exposure means for exposing ink between said sheets to activating electromagnetic radiation, whereby an ink copy is formed on said image forming portion of said film sheet after ink in said pod is spread between said sheets.
Claim 2
Dependent Claim
167 words
Photoelectrophoretic imaging apparatus comprising a plate, a film sheet positioned over said plate having an image forming portion and a rupturable pod for containing photoelectrophoretic ink, a roller supported for rotational and translational movement relative to said plate for rupturing said rupturable pod and for spreading ink contained within said rupturable pod, a processor sheet adjacent said film sheet fixedly anchored at one end relative to said plate and coupled to said roller at the other end so as to be wound onto said roller as said roller moves across said plate and unwound from said roller as said roller returns near its initial position, means for coupling a voltage difference between said roller and said plate across said ink between said sheets to cause particle deposition and migration, and exposure means for exposing ink between said sheets to activating electromagnetic radiation, whereby an ink copy is formed on said image forming portion of said film sheet after ink in said pod is spread between said sheets.
Claim 3
Dependent Claim
30 words
The apparatus of claim 1 wherein said exposure means includes means for projecting a full frame image onto said ink sandwiched between said film sheet and said unwound processor sheet.
Claim 4
Dependent Claim
17 words
The apparatus of claim 1 wherein said roller includes a conductive elastomeric layer on its outer periphery.
Claim 5
Dependent Claim
38 words
The apparatus of claim 1 wherein said film sheet includes an opaque backing having a cut out portion over which a transparent sheet of greater dimensions is mounted on a side of the backing opposite the rupturable pod.
Claim 6
Dependent Claim
179 words
Photoelectrophoretic imaging apparatus comprising a plate, a film sheet positioned over said plate having an image forming portion and a rupturable pod for containing photoelectrophoretic ink, a roller supported for rotational and translational movement relative to said plate for rupturing said rupturable pod and for spreading ink contained within said rupturable pod, a processor sheet adjacent said film sheet fixedly anchored at one end relative to said plate and coupled to said roller at the other end so as to be wound onto said roller as said roller moves across said plate and unwound from said roller as said roller returns near its initial position said processor sheet including a conductive backing facing said roller, means for coupling a voltage difference between said conductive backing on said processor sheet and said plate across said ink to cause particle deposition and migration, and exposure means for exposing ink between said sheets to activating electromagnetic radiation, whereby an ink copy is formed on said image forming portion of said film sheet after ink in said pod is spread between said sheets.
Claim 7
Dependent Claim
179 words
Photoelectrophoretic imaging apparatus comprising a plate, a film sheet positioned over said plate having an image forming portion and a rupturable pod for containing photoelectrophoretic ink, a roller supported for rotational and translational movement relative to said plate for rupturing said rupturable pod and for spreading ink contained within said rupturable pod, a processor sheet adjacent said film sheet fixedly anchored at one end relative to said plate and coupled to said roller at the other end so as to be wound onto said roller as said roller moves across said plate and unwound from said roller as said roller returns near its initial position said processor sheet including a conductive backing facing said roller, means for coupling a voltage difference between said conductive backing on said processor sheet and said plate across said ink to cause particle deposition and migration, and exposure means for exposing ink between said sheets to activating electromagnetic radiation, whereby an ink copy is formed on said image forming portion of said film sheet after ink in said pod is spread between said sheets.
Claim 8
Dependent Claim
30 words
The apparatus of claim 5 wherein said exposure means includes means for projecting a full frame image onto said ink sandwiched between said film sheet and said unwound processor sheet.
Claim 9
Dependent Claim
17 words
The apparatus of claim 5 wherein said roller includes a conductive elastomeric layer on its outer periphery.
Claim 10
Dependent Claim
38 words
The apparatus of claim 5 wherein said film sheet includes an opaque backing having a cut out portion over which a transparent sheet of greater dimensions is mounted on a side of the backing opposite said rupturable pod.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |