US4140529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charge transport overlayer in photoconductive element and method of use
Assignee: Xerox Corp
•
Filing: 1977-09-22
•
Granted: 1979-02-20
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Expires: 1997-09-22
Abstract
Abstract A photosensitive member having at least two electrically operative layers is disclosed. The first layer comprises a photoconductive layer which is capable of photogenerating holes and injecting photogenerated holes into a contiguous charge transport layer. The charge transport layer comprises an electrically inactive organic resinous material containing from about 10 to about 75 percent by weight of: ##STR1## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, maphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen. The charge transport layer while substantially non-absorbing in the spectral region of intended use is "active" in that it allows injection of photogenerated holes from the photoconductive layer, and allows these holes to be transported through the charge transport layer. This structure may be imaged in the conventional xerographic mode which usually includes charging, exposure to light and development.
Inventors
- 👤 Damodar M. Pai
- 👤 John F. Yanus
- 👤 Milan Stolka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142
Claims Analysis
Total Claims: 73
Claim 1
Independent Claim
161 words
An imaging member comprising a charge generation layer which comprises a layer of photoconductive material and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR18## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and bisphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen. said photoconductive layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive layer and transporting said holes through said charge transport layer.
Claim 2
Dependent Claim
161 words
An imaging member comprising a charge generation layer which comprises a layer of photoconductive material and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR18## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and bisphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen. said photoconductive layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive layer and transporting said holes through said charge transport layer.
Claim 3
Dependent Claim
18 words
The member according to claim 1 wherein said electrically inactive organic resinuous material has dispersed therein 1,4-bis-[bis-[4'-bis(phenylmethyl)-amino-2'-methylphenyl]methyl] benzene.
Claim 4
Dependent Claim
18 words
The member according to claim 1 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis[4'-diethylamino-2'-methylphenyl]methyl] benzene.
Claim 5
Dependent Claim
17 words
The member according to claim 1 wherein the electrically inactive organic resinous material is a polycarbonate resin.
Claim 6
Dependent Claim
20 words
The member according to claim 4 wherein the polycarbonate resin has a (Mw) of from about 20,000 to about 120,000.
Claim 7
Dependent Claim
19 words
The member according to claim 4 wherein the polycarbonate has a (Mw) of from about 20,000 to about 50,000.
Claim 8
Dependent Claim
20 words
The member according to claim 4 wherein the polycarbonate resin has a (Mw) of from about 50,000 to about 120,000.
Claim 9
Dependent Claim
23 words
The member according to claim 4 wherein the polycarbonate resin is poly(4,4'-isopropylidene-diphenylene carbonate) having a (Mw) of from about 35,000 to about 40,000.
Claim 10
Dependent Claim
22 words
The member according to claim 4 wherein the polycarbonate is poly(4,4'-isopropylidene-diphenylene carbonate) having a (Mw) of from about 40,000 to about 45,000.
Claim 11
Dependent Claim
37 words
The member according to claim 1 wherein the photoconductive material is selected from the group consisting of amorphous selenium, trigonal selenium, and selenium alloys selected from the group consisting of selenium-tellurium, selenium-tellurium-arsenic and selenium-arsenic and mixtures thereof.
Claim 12
Dependent Claim
163 words
An imaging member comprising a charge generation layer which comprises photoconductive material dispersed in a resinous binder and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR19## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo, and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transport said holes through said charge transport layer.
Claim 13
Dependent Claim
163 words
An imaging member comprising a charge generation layer which comprises photoconductive material dispersed in a resinous binder and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR19## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo, and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transport said holes through said charge transport layer.
Claim 14
Dependent Claim
18 words
The member according to claim 11 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-bis-(phenylmethyl)-amino-2'-methylphenyl]methyl] benzene.
Claim 15
Dependent Claim
18 words
The member according to claim 11 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-diethylamino-2'-methylphenyl]methyl] benzene.
Claim 16
Dependent Claim
17 words
The member according to claim 11 wherein the electrically inactive organic resinous material is a polycarbonate resin.
Claim 17
Dependent Claim
20 words
The member according to claim 14 wherein the polycarbonate resin has a (Mw) of from about 20,000 to about 120,000.
Claim 18
Dependent Claim
20 words
The member according to claim 10 wherein the polycarbonate resin has a (Mw) of from about 20,000 to about 50,000.
Claim 19
Dependent Claim
20 words
The member according to claim 14 wherein the polycarbonate resin has a (Mw) of from about 50,000 to about 120,000.
Claim 20
Dependent Claim
23 words
The member according to claim 10 wherein the polycarbonate resin is poly(4,4'-isopropylidene-diphenylene carbonate) having a (Mw) of from about 35,000 to about 40,000.
Claim 21
Dependent Claim
23 words
The member according to claim 14 wherein the polycarbonate resin is poly(4,4'-isopropylidene-diphenylene carbonate) having a (Mw) of from about 40,000 to about 45,000.
Claim 22
Dependent Claim
37 words
The member according to claim 11 wherein the photoconductive material is selected from the group consisting of amorphous selenium, trigonal selenium and selenium alloys selected from the group consisting of selenium-tellurium, selenium-tellurium-arsenic and selenium-arsenic and mixtures thereof.
Claim 23
Dependent Claim
13 words
The member according to claim 20 wherein the photoconductive material is trigonal selenium.
Claim 24
Dependent Claim
211 words
An imaging member comprising a charge generation layer which comprises an insulating organic resin matrix and a photoconductive material with substantially all of the photoconductive material in said layer in a multiplicity of interlocking photoconductive continuous paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to 75 percent by weight of ##STR20## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer.
Claim 25
Dependent Claim
211 words
An imaging member comprising a charge generation layer which comprises an insulating organic resin matrix and a photoconductive material with substantially all of the photoconductive material in said layer in a multiplicity of interlocking photoconductive continuous paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to 75 percent by weight of ##STR20## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer.
Claim 26
Dependent Claim
18 words
The member according to claim 22 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-bis-(phenylmethyl)-amino-2'-methylphenyl]methyl] benzene.
Claim 27
Dependent Claim
18 words
The member according to claim 22 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-diethylamino-2'-methylphenyl]methyl] benzene.
Claim 28
Dependent Claim
16 words
The member according to claim 22 wherein the electrically inactive organic material is a polycarbonate resin.
Claim 29
Dependent Claim
20 words
The member according to claim 25 wherein the polycarbonate resin has a (Mw) of from about 20,000 to about 120,000.
Claim 30
Dependent Claim
20 words
The member according to claim 25 wherein the polycarbonate resin has a (Mw) of from about 20,000 to about 50,000.
Claim 31
Dependent Claim
20 words
The member according to claim 19 wherein the polycarbonate resin has a (Mw) of from about 50,000 to about 120,000.
Claim 32
Dependent Claim
25 words
The member according to claim 25 wherein the electrically inactive polycarbonate resin is poly(4,4'-isopropylidene-diphenylene carbonate) having a (Mw) of from about 35,000 to about 40,000.
Claim 33
Dependent Claim
23 words
The member according to claim 25 wherein the carbonate resin is poly(4,4'-isopropylidene-diphenylene carbonate) having a (Mw) of from about 40,000 to about 45,000.
Claim 34
Dependent Claim
37 words
The member according to claim 22 wherein the photoconductive material is selected from the group consisting of amorphous selenium, trigonal selenium and selenium alloys selected from the group consisting of selenium-tellurium, selenium-tellurium-arsenic and selenium-arsenic and mixtures thereof.
Claim 35
Dependent Claim
13 words
The member according to claim 31 wherein the photoconductive material is trigonal selenium.
Claim 36
Dependent Claim
215 words
An imaging member comprising a charge generation layer which comprises an insulating organic resin matrix containing therein photoconductive particles, with substantially all of the photoconductive particles being in substantial particle-to-particle contact in said layer in a multiplicity of interlocking photoconductive paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent, and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight ##STR21## wherein R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes, but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer.
Claim 37
Dependent Claim
215 words
An imaging member comprising a charge generation layer which comprises an insulating organic resin matrix containing therein photoconductive particles, with substantially all of the photoconductive particles being in substantial particle-to-particle contact in said layer in a multiplicity of interlocking photoconductive paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent, and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight ##STR21## wherein R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes, but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer.
Claim 38
Dependent Claim
18 words
The member according to claim 33 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-bis-(phenylmethyl)-amino-2'-methylphenyl]methyl] benzene.
Claim 39
Dependent Claim
18 words
The member according to claim 33 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-diethylamino-2'-methylphenyl[methyl[ benzene.
Claim 40
Dependent Claim
17 words
The member according to claim 33 wherein the electrically inactive organic resinous material is a polycarbonate resin.
Claim 41
Dependent Claim
20 words
The member according to claim 36 wherein the polycarbonate resin has a (Mw) of from about 20,000 to about 120,000.
Claim 42
Dependent Claim
20 words
The member according to claim 36 wherein the polycarbonate resin has a (Mw) of from about 20,000 to about 50,000.
Claim 43
Dependent Claim
20 words
The member according to claim 36 wherein the polycarbonate resin has a (Mw) of from about 50,000 to about 120,000.
Claim 44
Dependent Claim
23 words
The member according to claim 36 wherein the polycarbonate resin is poly(4,4'-isopropylidene-diphenylene carbonate) having a (Mw) of from about 35,000 to about 40,000.
Claim 45
Dependent Claim
23 words
The member according to claim 36 wherein the polycarbonate resin is poly(4,4'-isopropylidene-diphenylene carbonate) having a (Mw) of from about 40,000 to about 45,000.
Claim 46
Dependent Claim
37 words
The member according to claim 33 wherein the photoconductive material is selected from the group consisting of amorphous selenium, trigonal selenium and selenium alloys selected from the group consisting of selenium-tellurium, selenium-tellurium-arsenic and selenium-arsenic and mixtures thereof.
Claim 47
Dependent Claim
13 words
The member according to claim 42 wherein the photoconductive material is trigonal selenium.
Claim 48
Independent Claim
231 words
A method of imaging which comprises: (a) providing an imaging member comprising a layer of photoconductive material and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR22## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transported through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 49
Independent Claim
231 words
A method of imaging which comprises: (a) providing an imaging member comprising a layer of photoconductive material and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR22## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transported through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 50
Dependent Claim
18 words
The method according to claim 44 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-bis-(phenylmethyl)-amino-2'-methylphenyl]methyl] benzene.
Claim 51
Dependent Claim
19 words
The method of according to claim 44 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-diethylamino-2'-methylphenyl]methyl] benzene.
Claim 52
Independent Claim
245 words
A method of imaging which comprises: (a) providing an imaging member comprising a charge generation layer which comprises photoconductive material dispersed in a resinous binder and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR23## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photo-excited hole generation and injection and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photo-excited holes but being capable of supporting the injection of photo-excited holes from said photoconductive material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material dispersed in a resinous binder is absorbing and to which the charge transport layer is non-absorbing, whereby the photo-excited holes generated by said photoconductive material dispersed in a binder are injected into and are transported through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 53
Independent Claim
245 words
A method of imaging which comprises: (a) providing an imaging member comprising a charge generation layer which comprises photoconductive material dispersed in a resinous binder and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR23## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photo-excited hole generation and injection and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photo-excited holes but being capable of supporting the injection of photo-excited holes from said photoconductive material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material dispersed in a resinous binder is absorbing and to which the charge transport layer is non-absorbing, whereby the photo-excited holes generated by said photoconductive material dispersed in a binder are injected into and are transported through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 54
Dependent Claim
18 words
The method according to claim 47 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-bis-(phenylmethyl)-amino2'-methylphenyl]methyl] benzene.
Claim 55
Dependent Claim
18 words
The method according to claim 47 wherein said electrically inactive organic resinous material has dispersed therein 1,4-bis-[bis-[4'-diethylamino-2'-methylphenyl]methyl] benzene.
Claim 56
Independent Claim
287 words
A method of imaging which comprises: (a) providing an imaging member comprising a charge generation layer which comprises an insulating organic resin matrix and a photoconductive material, with substantially all of the photoconductive material in said layer in a multiplicity of interlocking photoconductive continuous paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent and a contiguous charge transport layer of electrically inactive organic material having dispersed therein from about 10 to about 75 percent by weight of ##STR24## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transported through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 57
Independent Claim
287 words
A method of imaging which comprises: (a) providing an imaging member comprising a charge generation layer which comprises an insulating organic resin matrix and a photoconductive material, with substantially all of the photoconductive material in said layer in a multiplicity of interlocking photoconductive continuous paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent and a contiguous charge transport layer of electrically inactive organic material having dispersed therein from about 10 to about 75 percent by weight of ##STR24## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transported through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 58
Independent Claim
284 words
A method of imaging which comprises: (a) providing an imaging member comprising a charge generation layer which comprises an insulating organic resin matrix containing therein photoconductive particles, with substantially all of the photoconductive particles being in substantial particle-to-particle contact in said layer in a multiplicity of interlocking photoconductive continuous paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent and a contiguous charge transport layer of electrically inactive organic material having dispersed therein from about 10 to about 75 percent by weight of ##STR25## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transport through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 59
Independent Claim
284 words
A method of imaging which comprises: (a) providing an imaging member comprising a charge generation layer which comprises an insulating organic resin matrix containing therein photoconductive particles, with substantially all of the photoconductive particles being in substantial particle-to-particle contact in said layer in a multiplicity of interlocking photoconductive continuous paths through the thickness of said layer, said photoconductive paths being present in a volume concentration, based on the volume of said layer, of from about 1 to 25 percent and a contiguous charge transport layer of electrically inactive organic material having dispersed therein from about 10 to about 75 percent by weight of ##STR25## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transport through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 60
Dependent Claim
205 words
An imaging member comprising a charge generation layer consisting essentially of an amorphous mixture of selenium, arsenic and a halogen, arsenic is present in amounts from about 0.5 percent to about 50 percent by weight and the halogen is present in amounts from about 10 to about 10,000 parts per million with the balance being selenium and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR26## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said charge generation layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the charge generation layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said charge generation layer and transporting said holes through said charge transport layer.
Claim 61
Dependent Claim
205 words
An imaging member comprising a charge generation layer consisting essentially of an amorphous mixture of selenium, arsenic and a halogen, arsenic is present in amounts from about 0.5 percent to about 50 percent by weight and the halogen is present in amounts from about 10 to about 10,000 parts per million with the balance being selenium and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR26## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said charge generation layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the charge generation layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said charge generation layer and transporting said holes through said charge transport layer.
Claim 62
Dependent Claim
22 words
The member according to claim 52 wherein the arsenic is present in amounts from 20 percent to about 40 percent by weight.
Claim 63
Dependent Claim
11 words
The member according to claim 52 wherein the halogen is iodine.
Claim 64
Dependent Claim
29 words
The member according to claim 52 wherein the generation layer consists essentially of 64.5 percent by weight selenium, 35.5 percent by weight arsenic and 850 parts per million iodine.
Claim 65
Dependent Claim
216 words
An imaging member comprising a charge generation layer consisting essentially of particulate amorphous material consisting essentially of selenium, arsenic and a halogen, arsenic is present in amounts from about 0.5 percent to about 50 percent by weight and the halogen is present in amounts from about 10 to about 10,000 parts per million with the balance being amorphous selenium, said particulate material dispersed in a resinous binder and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR27## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said charge generation layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the charge generation layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said charge generation layer and transporting said holes through said charge transport layer.
Claim 66
Dependent Claim
216 words
An imaging member comprising a charge generation layer consisting essentially of particulate amorphous material consisting essentially of selenium, arsenic and a halogen, arsenic is present in amounts from about 0.5 percent to about 50 percent by weight and the halogen is present in amounts from about 10 to about 10,000 parts per million with the balance being amorphous selenium, said particulate material dispersed in a resinous binder and a contiguous charge transport layer of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR27## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said charge generation layer exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the charge generation layer generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said charge generation layer and transporting said holes through said charge transport layer.
Claim 67
Dependent Claim
23 words
The member according to claim 56 wherein the arsenic is present in amounts from about 20 percent to about 40 percent by weight.
Claim 68
Dependent Claim
11 words
The member according to claim 56 wherein the halogen is iodine.
Claim 69
Dependent Claim
29 words
The member according to claim 56 wherein the generation layer consists essentially of 64.5 percent by weight selenium, 35.5 percent by weight arsenic and 850 parts per million iodine.
Claim 70
Independent Claim
279 words
A method of imaging which comprises: (a) providing an imaging member consisting essentially of a charge generation layer consisting essentially of an amorphous mixture of selenium, arsenic and a halogen, arsenic is present in amounts from about 0.5 percent to 50 percent by weight and the halogen content being from about 10 to about 10,000 parts per million with the balance being selenium and a contiguous charge transport layer consisting essentially of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR28## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transported through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 71
Independent Claim
279 words
A method of imaging which comprises: (a) providing an imaging member consisting essentially of a charge generation layer consisting essentially of an amorphous mixture of selenium, arsenic and a halogen, arsenic is present in amounts from about 0.5 percent to 50 percent by weight and the halogen content being from about 10 to about 10,000 parts per million with the balance being selenium and a contiguous charge transport layer consisting essentially of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR28## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said photoconductive material exhibiting the capability of photogeneration of holes and injection of said holes and said charge transport layer being substantially non-absorbing in the spectral region at which the photoconductive material generates and injects photogenerated holes but being capable of supporting the injection of photogenerated holes from said photoconductive material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transported through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 72
Independent Claim
287 words
A method of imaging which comprises: (a) providing an imaging member comprising a charge generation layer consisting essentially of particulate amorphous material consisting essentially of selenium, arsenic and a halogen, the arsenic content being from about 0.5 percent to about 50 percent by weight and the halogen content being from about 10 to about 10,000 parts per million with the balance being selenium, said particulate material dispersed in a resinous binder and a contiguous charge transport layer consisting essentially of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR29## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said charge generation material exhibiting the capability of photo-excited hole generation and injection and said charge transport layer being substantially non-absorbing in the spectral region at which the charge generation material generates and injects photo-excited holes but being capable of supporting the injection of photo-excited holes from said charge generation material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transport through said charge transport layer to form a latent electrostatic image on the surface of said member.
Claim 73
Independent Claim
287 words
A method of imaging which comprises: (a) providing an imaging member comprising a charge generation layer consisting essentially of particulate amorphous material consisting essentially of selenium, arsenic and a halogen, the arsenic content being from about 0.5 percent to about 50 percent by weight and the halogen content being from about 10 to about 10,000 parts per million with the balance being selenium, said particulate material dispersed in a resinous binder and a contiguous charge transport layer consisting essentially of electrically inactive organic resinous material having dispersed therein from about 10 to about 75 percent by weight of ##STR29## where R 1 is selected from the group consisting of an alkyl with from 1 to 12 carbon atoms and an alkyl with from 1 to 12 carbon atoms substituted by aryl groups selected from the group consisting of phenyl, naphthyl, anthryl, and biphenyl and R 2 is selected from the group consisting of methyl, ethyl, chloro, bromo and hydrogen, said charge generation material exhibiting the capability of photo-excited hole generation and injection and said charge transport layer being substantially non-absorbing in the spectral region at which the charge generation material generates and injects photo-excited holes but being capable of supporting the injection of photo-excited holes from said charge generation material and transporting said holes through said charge transport layer; (b) uniformly electrostatically charging said member, followed by; (c) imagewise exposing said charged member to a source of activating radiation to which the photoconductive material is absorbing and to which the charge transport layer is non-absorbing, wherein the photogenerated holes generated by said photoconductive material are injected into and are transport through said charge transport layer to form a latent electrostatic image on the surface of said member.
References Cited (Backward Citations)
US3168857A
Cited
US3312548A
Cited
US3542544A
Cited
US3589897A
Cited
US3820989A
Cited
US3615402A
Cited
US3647431A
Cited
US3787208A
Cited
US3963779A
Cited
US3989520A
Cited
US4050935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |