US3910697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for regenerating a photoconductive layer
Assignee: Turlabor AG
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Filing: 1974-04-29
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Granted: 1975-10-07
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Expires: 1994-04-29
Abstract
Abstract A process for regenerating a photoconductive layer which has been utilized in an electrographic process wherein the layer is regenerated by removing surface particles of the layer from the remainder of the layer. Abrading the layer to remove the surface particles of the layer is the preferred embodiment of performing the process of the present invention. The regeneration can be performed prior to the formation of a latent electrostatic image in an electrophotographic duplicating process. The process of the present invention is especially useful with layers containing organic materials and also when incorporated in an electrophotographic process which includes forming a latent electrostatic image on a surface and transferring the latent electrostatic image from that surface.
Inventors
- 👤 Willi Lanker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:36
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/005; G03G21/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
A process for regenerating a photoconductive layer having a substantial amount of an organic material which has been utilized in an electrophotographic process comprising removing surface particles of the photoconductive layer from the remainder of the layer by applying thermal radiation to the surface of said layer for removal of said particles of decomposed material by vaporization.
Claim 2
Dependent Claim
57 words
A process for regenerating a photoconductive layer having a substantial amount of an organic material which has been utilized in an electrophotographic process comprising removing surface particles of the photoconductive layer from the remainder of the layer by applying thermal radiation to the surface of said layer for removal of said particles of decomposed material by vaporization.
Claim 3
Dependent Claim
57 words
A process for regenerating a photoconductive layer having a substantial amount of an organic material which has been utilized in an electrophotographic process comprising removing surface particles of the photoconductive layer from the remainder of the layer, wherein the removing includes washing said layer with a solvent to remove surface particles of decomposed material from said layer.
Claim 4
Dependent Claim
57 words
A process for regenerating a photoconductive layer having a substantial amount of an organic material which has been utilized in an electrophotographic process comprising removing surface particles of the photoconductive layer from the remainder of the layer, wherein the removing includes washing said layer with a solvent to remove surface particles of decomposed material from said layer.
Claim 5
Dependent Claim
62 words
A process for regenerating a photoconductive layer having a substantial amount of an organic material which has been utilized in an electrophotographic process comprising removing surface particles of the photoconductive layer from the remainder of the layer, wherein said removing includes contacting said layer with a fibrous web wetted with a solvent to remove surface particles of decomposed material from said layer.
Claim 6
Dependent Claim
62 words
A process for regenerating a photoconductive layer having a substantial amount of an organic material which has been utilized in an electrophotographic process comprising removing surface particles of the photoconductive layer from the remainder of the layer, wherein said removing includes contacting said layer with a fibrous web wetted with a solvent to remove surface particles of decomposed material from said layer.
Claim 7
Independent Claim
51 words
An apparatus for regenerating a photoconductive layer having a substantial amount of an organic material which has been utilized in an electrophotographic process comprising means for removing surface particles of said photoconductive layer from the remainder of the layer, said means being mounted relative to the said layer for contact therewith.
Claim 8
Independent Claim
51 words
An apparatus for regenerating a photoconductive layer having a substantial amount of an organic material which has been utilized in an electrophotographic process comprising means for removing surface particles of said photoconductive layer from the remainder of the layer, said means being mounted relative to the said layer for contact therewith.
Claim 9
Dependent Claim
48 words
The apparatUs of claim 4 wherein said photoconductive layer being on the periphery of a drum and said means for removing surface particles of said layer being positioned adjacent said drum and contactable with the surface of said layer opposite the surface thereof affixed to the said 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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |