Patent US5063125A successfully refreshed from Google Patents.
US5063125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive layer for electrical devices
Assignee: Xerox Corp
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Filing: 1989-12-29
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Granted: 1991-11-05
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Expires: 2009-12-29
Abstract
Abstract A device containing a substrate and an electrically conductive layer including a film forming continuous phase containing a charge transport compound and finely divided electrically conductive particles dispersed in the continuous phase. This device may be coated with at least one photoconductive layer and used in an imaging process.
Inventors
- 👤 Huoy-Jen Yuh
- 👤 John W. Spiewak
- 👤 Constance J. Thornton
- 👤 John F. Yanus
- 👤 William W. Limburg
- 👤 Joseph Mammino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:43
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/02; G03G5/04; G03G5/043; G03G5/047; G03G5/104
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
35 words
An electrophotographic imaging member comprising a substrate, an electrically conductive layer comprising an organic charge transporting continuous phase and finely divided electrically conductive particles dispersed in said continuous phase, and at least one photoconductive layer.
Claim 2
Dependent Claim
35 words
An electrophotographic imaging member comprising a substrate, an electrically conductive layer comprising an organic charge transporting continuous phase and finely divided electrically conductive particles dispersed in said continuous phase, and at least one photoconductive layer.
Claim 3
Dependent Claim
29 words
An electrophotographic imaging member according to claim 1 wherein said continuous phase comprises an electrically insulating film forming binder having organic charge transport molecules dissolved or molecularly dispersed therein.
Claim 4
Dependent Claim
41 words
An electrophotographic imaging member according to claim 2 wherein said electrically conductive layer comprises between about 15 percent by weight about to 40 percent by weight of said charge transporting small molecules based on the total weight of said continuous phase.
Claim 5
Dependent Claim
62 words
An electrophotographic imaging member according to claim 1 wherein said charge transporting continuous phase comprises a charge transporting small molecule or a charge transporting polymer comprising charge transport units and said continuous phase comprises between about 5 percent and about 40 percent by weight of said small molecule or said charge transport units based on the total weight of said continuous phase.
Claim 6
Dependent Claim
21 words
An electrophotographic imaging member according to claim 1 wherein said continuous phase comprises a polymer which is at least partially cross-linked.
Claim 7
Dependent Claim
21 words
An electrophotographic imaging member according to claim 1 wherein said continuous phase comprises an electrically insulating charge transporting film forming binder.
Claim 8
Dependent Claim
29 words
An electrophotographic imaging member according to claim 6 wherein said film forming binder comprises a copolymer of maleimide or a maleic anhydride and a hydroxy polymer or diol molecule.
Claim 9
Dependent Claim
27 words
An electrophotographic imaging member according to claim 1 wherein said continuous phase comprises a copolymer of methyl acrylamidoglycolate alkyl ether and at least one other vinyl monomer.
Claim 10
Dependent Claim
22 words
An electrophotographic imaging member according to claim 1 wherein said charge transport molecules comprise one or more aromatic diamine charge transport molecules.
Claim 11
Dependent Claim
32 words
An electrophotographic imaging member according to claim 1 wherein said electrically conductive particles are particles of a metal or metal oxide having a conductivity of at least about 1 (ohm.cm) -1 .
Claim 12
Dependent Claim
18 words
An electrophotographic imaging member according to claim 1 wherein said electrically conductive particles are particles of carbon black.
Claim 13
Dependent Claim
34 words
An electrophotographic imaging member according to claim 11 wherein said layer comprises about 10 percent and about 40 percent by volume of particles of carbon black, based on the total volume of said layer.
Claim 14
Dependent Claim
34 words
An electrophotographic imaging member according to claim 12 wherein said layer comprises about 15 percent and about 25 percent by volume of particles of carbon black, based on the total volume of said layer.
Claim 15
Dependent Claim
23 words
An electrophotographic imaging member according to claim 1 wherein said electrically conductive layer has a resistivity of less than about 10 8 ohms/square.
Claim 16
Dependent Claim
23 words
An electrophotographic imaging member according to claim 1 wherein said electrically conductive particles having an average particle size less than about 10 micrometers.
Claim 17
Dependent Claim
25 words
An electrophotographic imaging member according to claim 1 wherein said electrically conductive layer has a thickness of between about 0.5 micrometer and about 5 micrometers.
Claim 18
Dependent Claim
26 words
An electrophotographic imaging member according to claim 1 wherein a charge blocking layer is interposed between said photoconductive layer said conductive layer and said photoconductive layer.
Claim 19
Dependent Claim
22 words
An electrophotographic imaging member according to claim 1 wherein said photoconductive layer comprises a charge generating layer and a charge transport layer.
Claim 20
Dependent Claim
111 words
An electrophotographic imaging process comprising providing an electrophotographic imaging member having an imaging surface, said imaging member comprising a supporting substrate, an electrically conductive layer comprising an organic charge transporting continuous phase and finely divided electrically conductive particles dispersed in said continuous phase and at least one photoconductive layer, forming a uniform electrostatic charge on said imaging surface, exposing said photoconductive layer to activating electromagnetic radiation in image configuration to form an electrostatic latent image on said imaging surface, depositing toner particles on said imaging surface to form a toner image in conformance to said electrostatic latent image, and transfering said toner image from said imaging surface to a receiving member.
Claim 21
Dependent Claim
111 words
An electrophotographic imaging process comprising providing an electrophotographic imaging member having an imaging surface, said imaging member comprising a supporting substrate, an electrically conductive layer comprising an organic charge transporting continuous phase and finely divided electrically conductive particles dispersed in said continuous phase and at least one photoconductive layer, forming a uniform electrostatic charge on said imaging surface, exposing said photoconductive layer to activating electromagnetic radiation in image configuration to form an electrostatic latent image on said imaging surface, depositing toner particles on said imaging surface to form a toner image in conformance to said electrostatic latent image, and transfering said toner image from said imaging surface to a receiving member.
Claim 22
Dependent Claim
29 words
An electrophotographic imaging process according to claim 19 wherein said continuous phase comprises an electrically insulating film forming binder having organic charge transport molecules dissolved or molecularly dispersed therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-04 | 1995-05-06 | 1995-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-04 | 1999-05-06 | 1999-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-04 | 2003-05-06 | 2003-11-05 | $7700.00 | Window Closed / Lapsed |