PHOTORECEPTOR FOR ELECTROPHOTOGRAPHY, METHOD FOR MANUFACTURING THE SAME, AND ELECTROPHOTOGRAPHIC DEVICE

A photoreceptor for electrophotography, a method for manufacturing the photoreceptor, and an electrophotographic device including the photoreceptor are disclosed. The photoreceptor for electrophotography includes a conductive substrate; and a photosensitive layer that is provided on the conductive substrate and that has an outermost surface layer containing at least a resin binder and an electron transport material. The resin binder is composed of a polyarylate resin having a structural unit represented by a Chemical Structural Formula 1, and the electron transport material is composed of a compound having a structure represented by a Structural Formula (ET2-3). The photoreceptor has high sensitivity, low residual electric potential, no light fatigue and sufficient stain resistance. 3. The photoreceptor for electrophotography according to claim 1 , wherein the photosensitive layer is the outermost surface layer.4. The photoreceptor for electrophotography according to claim 3 , wherein the photosensitive layer is composed of a charge generation layer and a charge transport layer claim 3 , and the charge transport layer is the outermost surface layer.5. The photoreceptor for electrophotography according to claim 1 , wherein a surface protective layer is provided on the photosensitive layer claim 1 , and the surface protective layer is the outermost surface layer.6. The photoreceptor for electrophotography according to claim 3 , wherein the photosensitive layer is a positively charged single-layer type.7. The photoreceptor for electrophotography according to claim 3 , wherein the photosensitive layer is composed of a charge transport layer and a charge generation layer claim 3 , and the charge generation layer is the outermost surface layer.8. The photoreceptor for electrophotography according to claim 1 , wherein the outermost surface layer contains the electron transport material in an amount of 10 parts by mass or less with respect to 100 parts by mass of the resin ...

PHOTOSENSITIVE BODY FOR ELECTROPHOTOGRAPHY, METHOD FOR PRODUCING THE SAME, AND ELECTROPHOTOGRAPHIC DEVICE INCLUDING THE SAME

The present invention provides an electrophotographic photoreceptor including a photosensitive layer containing an electron transport material, and having high pressure resistance and suppressed occurrence of a leak phenomenon, a method for producing the same, and an electrophotographic device using the same. The electrophotographic photoreceptor includes an electrically conductive support containing an aluminum alloy; an anodic oxide film formed on a surface of the electrically conductive support; and a photosensitive layer formed on the anodic oxide film. The photosensitive layer contains an electron transport material having an electron mobility of 10cm/V/sec or more when field intensity is set to 20 V/μm. The surface of the electrically conductive support having the anodic oxide film formed thereon has an admittance value that is 25 μS or more and 60 μS or less. 1. An electrophotographic photoreceptor that is a negatively-chargeable , laminated electrophotographic photoreceptor , comprising:an electrically conductive support containing an aluminum alloy;an anodic oxide film formed on a surface of the electrically conductive support; anda photosensitive layer formed on the anodic oxide film,{'sup': −7', '2, 'wherein the photosensitive layer contains an electron transport material having an electron mobility of 10cm/V/sec or more when field intensity is set to 20 V/μm, and'}wherein the surface of the electrically conductive support having the anodic oxide film formed hereon has an admittance value of 25 μS or more and 60 μS or less.3. A method for producing the electrophotographic photoreceptor according to claim 1 , comprising:forming the anodic oxide film on the surface of the electrically conductive support using anodic oxidation; andexposing the electrically conductive support after anodic oxidation to a steam atmosphere as a post-treatment,wherein the steam atmosphere in the post-treatment is present in a quantity effective to provide 60 RH %·h or more, and{' ...

Electrophotographic photoreceptor, process cartridge, image forming apparatus, and imide compound

An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2): (in Formulas (1) and (2), R 10 , R 11 , R 20 or R 21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X 1 and X 2 each independently represent a nitrogen atom or a substituted or unsubstituted carbon atom, Y 1 and Y 2 each independently represent an oxygen atom, a sulfur atom, a selenium atom, or NH, and R 1 and R 2 each independently represent a hydrogen atom or a monovalent organic group:

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS

Provided is an electrophotographic photosensitive member improved both in wear resistance and in image unevenness. The electrophotographic photosensitive member includes a support, and a photosensitive layer and a surface layer on the support, wherein the surface layer is a cured product of a composition containing a compound represented by the formula (A) and a charge-transporting substance having at least one reactive functional group selected from the group consisting of a hydroxy group, a methoxy group, an amino group, a thiol group, and a carboxyl group. 2. The electrophotographic photosensitive member according to claim 1 , wherein the charge-transporting substance has at least one group selected from a hydroxyalkyl group claim 1 , a hydroxyalkoxy group claim 1 , and a hydroxyphenyl group that may have a substituent.3. The electrophotographic photosensitive member according to claim 1 , wherein the composition further contains at least one kind selected from a guanamine compound and a melamine compound each having one of a hydroxyalkyl group and a hydroxyalkoxy group.4. The electrophotographic photosensitive member according to claim 1 , wherein the surface layer contains the cured product of the composition claim 1 , and fluorine atom-containing resin particles.5. The electrophotographic photosensitive member according to claim 1 , wherein a content ratio of the charge-transporting substance with respect to the composition is 50 mass % or more. The present disclosure relates to an electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member.A surface layer of an electrophotographic photosensitive member is subjected to stress due to a series of processes, such as charging, exposure, development, transfer, and cleaning, and hence is required to have wear resistance and chemical stability.As a technology for improving the wear resistance, in Japanese Patent ...

Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

Provided is an electrophotographic photosensitive member including: a support, a photosensitive layer provided on the support, and a surface layer provided on the photosensitive layer, wherein the surface layer of the electrophotographic photosensitive member contains a cured product of a composition containing a charge transporting substance having a polymerizable functional group, a compound having a specific structure, a fluororesin particle, and polyvinyl acetal.

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer is a single layer, and contains a charge generating material, an electron transport material, a binder resin, and a hole transport material. 3. The electrophotographic photosensitive member according to claim 1 , whereinthe end group is the first end group, andthe halogen atom of the first end group is a fluorine atom.9. The electrophotographic photosensitive member according to claim 1 , whereinthe photosensitive layer further contains an n-type pigment.13. The electrophotographic photosensitive member according to claim 11 , whereinthe additive has a melting point of at least 90° C. and no higher than 300° C.16. The electrophotographic photosensitive member according to claim 1 , whereinthe charge generating material includes titanyl phthalocyanine having a Y-form crystal structure.17. A process cartridge comprising:at least one selected from the group consisting of a charger, a light exposure device, a development device, a transfer device, a cleaning member, and a static eliminator; and{'claim-ref': {'@idref': 'CLM-00001', '#text': 'claim 1'}, '#text': 'the electrophotographic photosensitive member according to .'}18. An image forming apparatus comprising:an image bearing member;a charger configured to charge a surface of the image bearing member to a positive polarity;a light exposure device configured to expose the charged surface of the image bearing member to light to form an electrostatic latent image on the surface of the image bearing member;a development device configured to develop the electrostatic latent image into a toner image; anda transfer device configured to transfer the toner image from the image bearing member to a transfer target, wherein{'claim-ref': {'@idref': 'CLM-00001', '#text': 'claim 1'}, '#text': 'the image bearing member is the electrophotographic photosensitive member according to .'}19. The image forming ...

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer is a single layer and contains a charge generating material, an electron transport material, a binder resin, and a hole transport material. The electron transport material includes a compound represented by general formula (1): 2. The electrophotographic photosensitive member according to claim 1 , wherein{'sup': 1', '2, 'claim-text': an aryl group having a carbon number of at least 6 and no greater than 14 that is optionally substituted with at least 1 and no more than 5 substituents selected from the group consisting of a halogen atom, an alkyl group having a carbon number of at least 1 and no greater than 6, and an alkoxy group having a carbon number of at least 1 and no greater than 6;', 'an alkyl group having a carbon number of at least 1 and no greater than 6; or', 'a heterocyclic group having at least 5 members and no more than 14 members., 'in the general formula (1), Rand Reach represent, independently of one another4. The electrophotographic photosensitive member according to claim 1 , whereinthe photosensitive layer further contains an n-type pigment.5. The electrophotographic photosensitive member according to claim 4 , whereinthe n-type pigment includes an azo pigment, a perylene pigment, or an isoindoline pigment.11. The electrophotographic photosensitive member according to claim 1 , whereinthe charge generating material includes titanyl phthalocyanine having a Y-form crystal structure.12. A process cartridge comprising:at least one selected from the group consisting of a charger, a light exposure device, a development device, a transfer device, a cleaning member, and a static eliminator; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the electrophotographic photosensitive member according to .'}13. An image forming apparatus comprising:an image hearing member;a charger configured to charge a surface of the image ...

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

An electrophotographic photosensitive member, including a support, a charge generating layer on the support, and a charge transporting layer on the charge generating layer, wherein the charge generating layer includes a gallium phthalocyanine crystal, a nitrogen-containing heterocyclic compound having a nitrogen atom having a substituent, and a compound represented by Formula (1) or (2).

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS

An electrophotographic photosensitive member, comprising a support, a charge generating layer on the support and a charge transporting layer on the charge generating layer, wherein the charge generating layer comprises a gallium phthalocyanine crystal, a nitrogen-containing heterocyclic compound and a compound represented by Formula (1), wherein a nitrogen atom in a heterocyclic ring of the nitrogen-containing heterocyclic compound has a substituent. 2. The electrophotographic photosensitive member according to claim 1 , wherein the nitrogen-containing heterocyclic compound is pyrrole claim 1 , pyrrolidine claim 1 , morpholine claim 1 , piperazine claim 1 , piperidine claim 1 , 4-piperidone claim 1 , indole claim 1 , phenothiazine claim 1 , phenoxazine or carbazole.3. The electrophotographic photosensitive member according to claim 1 , wherein the substituent bonding to an atom other than the nitrogen atom that forms the ring of the nitrogen-containing heterocyclic compound is a hydrogen atom claim 1 , a substituted or unsubstituted alkyl group claim 1 , a substituted or unsubstituted aryl group claim 1 , a substituted or unsubstituted heterocyclic group claim 1 , a halogen atom claim 1 , a hydroxy group claim 1 , a formyl group claim 1 , an alkenyl group claim 1 , an alkoxy group or an alkyloxycarbonyl group claim 1 ,wherein a substituent of the substituted alkyl group, a substituent of the substituted aryl group and a substituent of the substituted heterocyclic group are a halogen atom, a hydroxy group or a formyl group.5. The electrophotographic photosensitive member according to claim 4 , wherein Rin Formula (2) is a methyl group claim 4 , an ethyl group or a phenyl group.7. The electrophotographic photosensitive member according to claim 6 , wherein Rand Rin Formula (3) are each independently a methyl group claim 6 , an ethyl group or a phenyl group.9. The electrophotographic photosensitive member according to claim 8 , wherein Rin Formula (4) is a methyl group ...

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

An electrophotographic photosensitive member () includes a conductive substrate () and a photosensitive layer (). The photosensitive layer () is a single-layer photosensitive layer containing at least a charge generating material, an electron transport material, a hole transport material, and a binder resin. The electron transport material includes a naphthoquinone derivative represented by general formula (1). An amount of triboelectric charge of calcium carbonate as measured by charging the calcium carbonate through friction with the photosensitive layer () is at least +7 μC/g. In general formula (1), Rand Rare respectively the same as Rand Rdescribed in the description. 2. The electrophotographic photosensitive member according to claim 1 , whereinin the general formula (1),the aryl group having a carbon number of at least 6 and no greater than 14 has an alkyl group having a carbon number of at least 1 and no greater than 6 as the substituent,the aralkyl group having a carbon number of at least 7 and no greater than 20 has an alkyl group having a carbon number of at least 1 and no greater than 6 as the substituent, andthe cycloalkyl group having a carbon number of at least 3 and no greater than 10 has an alkyl group having a carbon number of at least 1 and no greater than 6 as the substituent.3. The electrophotographic photosensitive member according to claim 1 , wherein{'sup': 11', '12, 'in the general formula (1), a total number of halogen atoms included in the chemical groups respectively represented by Rand Ris at least 1 and no greater than 3.'}4. The electrophotographic photosensitive member according to claim 1 , wherein{'sup': 11', '12, 'in the general formula (1), Rand Rdiffer from each other.'}5. The electrophotographic photosensitive member according to claim 1 , whereinin the general formula (1),{'sup': 11', '12, 'either one of Rand Rrepresents an alkyl group having a carbon number of at least 1 and no greater than 3 and substituted with one or more ...

Image forming apparatus and image forming method

An image forming apparatus in which no image smearing occurs even under high-temperature and high-humidity conditions while durability and low-temperature fixability are maintained. The image forming apparatus comprises: an electrophotographic photosensitive member comprising a support and a photosensitive layer formed on the support; an image forming unit configured to form an electrostatic image on the electrophotographic photosensitive member; a developing unit comprising a toner and configured to supply the toner to the electrostatic image formed on the electrophotographic photosensitive member for forming a toner image; and a transferring unit configured to transfer the toner image from the electrophotographic photosensitive member, wherein a surface layer of the electrophotographic photosensitive member is a surface layer comprises a binder resin (A), the toner is a toner including toner particles each containing a binder resin (B) and a wax, and the binder resin (A) has a specific structure I.

ELECTROPHOTOGRAPHIC PHOTORECEPTOR, ELECTROPHOTOGRAPHIC APPARATUS COMPRISING THE SAME, AND PACKAGE OF ELECTROPHOTOGRAPHIC PHOTORECEPTOR

In a negatively-chargeable laminate-type electrophotographic photoreceptor, a charge generation layer and another charge transport layer are arranged on a conductive substrate directly or via an intermediate layer. The charge transport layer contains at least a hole-transporting substance, an electron-transporting substance and a binder resin; the mass ratio (R) [% by mass] between mass (P) of the hole-transporting substance and mass (N) of the electron-transporting substance is represented by the following equation (1), and satisfies the following equation (2): 5. An electrophotographic apparatus comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the electrophotographic photoreceptor according to ;'}a charging means which charges said electrophotographic photoreceptor;an exposure means which exposes the thus charged electrophotographic photoreceptor to form an electrostatic latent image;a developing means which develops said electrostatic latent image formed on said electrophotographic photoreceptor with a toner to form a toner image;a transfer means which transfers said toner image formed on said electrophotographic photoreceptor to a recording medium; anda fixation means which fixes said toner image transferred to said recording medium.6. A package of an electrophotographic photoreceptor claim 1 , in which the electrophotographic photoreceptor according to is covered with a black sheet article claim 1 ,{'sup': 2', '11', '2, 'wherein said black sheet article has a thickness of 30 to 80 μm and a surface resistivity of 10to 10Ω/cm.'} The present application is based on, and claims priority from, Japanese Application No. JP2015-226828 filed Nov. 19, 2015, the disclosure of which is hereby incorporated by reference herein in its entirety.The present invention relates to an electrophotographic photoreceptor (hereinafter, also referred to as “photoreceptor”) and an electrophotographic apparatus using the same, as well as an improvement in a package of an ...

NAPHTHALENEDICARBOXIMIDE DERIVATIVE AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER

A naphthalenedicarboximide derivative is represented by general formula (1) or (2). In general formulas (1) and (2), R, R, and Reach represent, independently of one another, an alkyl group which has a carbon number from 1 to 10 and which may have an aryl group having a carbon number from 6 to 14, an aryl group which has a carbon number from 6 to 14 and which may have an alkyl group having a carbon number from 1 to 10, a cycloalkyl group having a carbon number from 3 to 10, or an alkoxy group having a carbon number from 1 to 6, and m represents an integer from 0 to 4. When m represents an integer of 2 or more, chemical groups Rmay each be the same or may each be different. 2. The naphthalenedicarboximide derivative according to claim 1 , whereinin the general formulas (1) and (2),{'sub': 1', '3, 'Rand Reach represent, independently of one another, an alkyl group having a carbon number of at least 5 and no greater than 10 or an alkyl group which has a carbon number of at least 1 and no greater than 6 and a phenyl group,'}{'sub': '2', 'Rrepresents an alkyl group having a carbon number of at least 1 and no greater than 3, and'}m represents 0 or 1.3. The naphthalenedicarboximide derivative according to claim 1 , whereinin the general formulas (1) and (2),{'sub': 1', '3, 'Rand Reach represent an alkyl group which has a carbon number of at least 1 and no greater than 6 and an aryl group having a carbon number of at least 6 and no greater than 14.'}5. An electrophotographic photosensitive member claim 1 , comprisinga conductive substrate and a photosensitive layer,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the photosensitive layer contains the naphthalenedicarboximide derivative according to .'}6. The electrophotographic photosensitive member according to claim 5 , whereinthe photosensitive layer is a single-layer type photosensitive layer,the single-layer type photosensitive layer further contains a charge generating material, andthe charge generating ...

ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR MANUFACTURING SAME, AND ELECTROPHOTOGRAPHIC APPARATUS USING SAME

An electrophotographic photoreceptor of a negatively-chargeable laminate-type includes a conductive substrate; a charge generation layer provided on the conductive substrate and including a charge generating material; and a charge transport layer provided on the charge generation layer and containing, as a binder resin, a copolymerized polycarbonate resin having a repeating unit represented by Formula (1); as a hole transporting substance, a compound having a structure represented by Formula (2); as an electron transporting substance, a compound having a structure represented by Formula (3), and, as an antioxidant, a compound represented by Structural Formula (4), where a mass ratio H/(B+H) represents a ratio of mass (H) of the hole transporting substance with respect to a sum of mass (B) of the binder resin and the mass (H) of the hole transporting substance, and satisfies Formula (5), 20% by mass≤H/(B+H)≤35% by mass. 2. A method of producing the electrophotographic photoreceptor according to claim 1 , comprising:sequentially forming the charge generation layer and the charge transport layer by repeated dip coating and drying.3. A method of producing the electrophotographic photoreceptor according to claim 1 , comprising:providing a first coating solution including materials for the charge generation layer;dip coating the conductive substrate into the first coating solution to provide a first coating on the substrate;drying the first coating to provide the charge generation layer;providing a second coating solution including materials for the charge transport layer;dip coating the charge generation layer into the second coating solution to provide a second coating on the charge generation layer; anddrying the second coating to provide the charge transport layer.4. The method of producing the electrophotographic photoreceptor according to claim 3 , wherein drying is accomplished by air drying at ambient temperature and pressure claim 3 , or drying in a vacuum with ...

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

An electrophotographic photosensitive member () includes a conductive substrate () and a photosensitive layer (). The photosensitive layer () is a single-layer photosensitive layer. The photosensitive layer () contains at least a charge generating material, a hole transport material, an electron transport material, and a binder resin. The charge generating material includes a metal-free phthalocyanine. The hole transport material includes a triphenylamine derivative represented by general formula (1) shown below. The electron transport material includes a quinone derivative represented by general formula (2) shown below. In general formula (1), RR, R, m1, m2, k, p, and q are the same as those described in the description. In general formula (2), R, R, and Rare the same as those described in the description. 2. The electrophotographic photosensitive member according to claim 1 , whereinin the general formula (1),{'sup': 1', '1, 'Rrepresents an alkyl group having a carbon number of at least 1 and no greater than 4, an alkoxy group having a carbon number of at least 1 and no greater than 4, or a cycloalkane ring having a carbon number of at least 3 and no greater than 8 and formed through chemical groups Rbeing bonded together,'}{'sup': 2', '3, 'Rand Reach represent an alkyl group having a carbon number of at least 1 and no greater than 3,'}k represents an integer of at least 1 and no greater than 3,p and q each represent, independently of one another, 0 or 1, andm1 and m2 each represent, independently of one another, 1 or 2.3. The electrophotographic photosensitive member according to claim 1 , whereinin the general formula (1),{'sup': '1', 'Rrepresents an alkyl group having a carbon number of at least 1 and no greater than 4 or an alkoxy group having a carbon number of at least 1 and no greater than 3,'}k represents 1 or 2,{'sup': 2', '3, 'Rand Rsimultaneously represent an alkyl group having a carbon number of at least 1 and no greater than 3,'}p and q simultaneously ...

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

An electrophotographic photosensitive member includes a conductive substrate and a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, an additive, and a binder resin. An optical response time is in a range from 0.05 milliseconds to 0.85 milliseconds. The optical response time is a time from irradiation of a surface of the photosensitive layer charged to +800 V with pulse light having a wavelength of 780 nm to surface potential decay of the photosensitive layer from +800 V to +400 V. An optical intensity of the pulse light is set so that the surface potential of the photosensitive layer becomes +200 V from +800 V after 400 milliseconds from pulse light irradiation of the surface of the photosensitive layer charged to the +800 V. The additive includes either of both an ultraviolet absorbing agent and an antioxidant. 1. An electrophotographic photosensitive member comprising a conductive substrate and a photosensitive layer of a single layer , whereinthe photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, an additive, and a binder resin,an optical response time is at least 0.05 milliseconds and no greater than 0.85 milliseconds,the optical response time is a time from irradiation to decay, the irradiation being a time of a start of irradiation of a surface of the photosensitive layer charged to +800 V with pulse light having a wavelength of 780 nm, the decay being a time when a surface potential of the photosensitive layer decays from +800 V to +400 V,an optical intensity of the pulse light is set so that the surface potential of the photosensitive layer becomes +200 V from +800 V when 400 milliseconds elapse after the irradiation of the surface of the photosensitive layer charged to +800 V with the pulse light, andthe additive includes at least one of an ultraviolet absorbing agent and an ...

Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus and phthalocyanine crystal

The photosensitive layer of an electrophotographic photosensitive member contains a phthalocyanine crystal in which a compound represented by the following formula (1) is contained:

Electrophotographic photoreceptor, process cartridge, image forming apparatus, and imide compound

An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2): (in Formulas (1) and (2), R 10 , R 11 , R 20 , or R 21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X 1 and X 2 each independently represent a nitrogen atom or a substituted or unsubstituted carbon atom, Y 1 and Y 2 each independently represent an oxygen atom, a sulfur atom, a selenium atom, or NH, and R 1 and R 2 each independently represent a hydrogen atom or a monovalent organic group:

Member for electrophotography, process cartridge and electrophotographic apparatus

There is provided a member for electrophotography, which contributes to formation of a high-quality electrophotographic image. The member for electrophotography includes an electro-conductive substrate and an electro-conductive layer as an outermost layer, wherein the electro-conductive layer contains a resin having a nitrogen-containing heterocyclic cation structure, an anion, and a specific carbon black.

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

An electrophotographic photosensitive member () includes a conductive substrate () and a photosensitive layer (). The photosensitive layer () is a single-layer photosensitive layer () and contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. The binder resin includes a polyarylate resin represented by general formula (1).

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS

An electrophotographic photosensitive member can provide images in which black spots and fogging are suppressed and density unevenness due to coating unevenness of the charge generation layer is suppressed. The charge generation layer of the electrophotographic photosensitive member contains a gallium phthalocyanine crystal, a nitrogen-containing heterocyclic compound, and an amide compound represented by a formula (1), and a nitrogen atom in a heterocyclic ring of the nitrogen-containing heterocyclic compound has a substituent. 2. The electrophotographic photosensitive member according to claim 1 , wherein the nitrogen-containing heterocyclic compound is pyrrole claim 1 , pyrrolidine claim 1 , morpholine claim 1 , piperazine claim 1 , piperidine claim 1 , 4-piperidone claim 1 , indole claim 1 , imidazole claim 1 , phenothiazine claim 1 , phenoxazine claim 1 , or carbazole.3. The electrophotographic photosensitive member according to claim 1 , wherein a substituent of a non-nitrogen atom of a ring in the nitrogen-containing heterocyclic compound is a substituted or unsubstituted alkyl group claim 1 , a substituted or unsubstituted aryl group claim 1 , a substituted or unsubstituted heterocyclic group claim 1 , a halogen atom claim 1 , a hydroxy group claim 1 , a formyl group claim 1 , an alkenyl group claim 1 , an alkoxy group claim 1 , or an alkyloxycarbonyl group claim 1 ,where a substituent of the substituted alkyl group, a substituent of the substituted aryl group, and a substituent of the substituted heterocyclic group are each a halogen atom, a hydroxy group, or a formyl group.10. The electrophotographic photosensitive member according to claim 4 , wherein claim 4 , in the formula (2) claim 4 , Rrepresents a methyl group claim 4 , an ethyl group claim 4 , or a phenyl group.11. The electrophotographic photosensitive member according to claim 1 , wherein a content of the nitrogen-containing heterocyclic compound in the charge generation layer relative to the ...

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer having a single-layer structure. The photosensitive layer contains a charge generating material, an electron transport material, a polycarbonate resin, and a hole transport material. The electron transport material includes a compound having a halogen atom and represented by general formula (1), (2), (3), (4), or (5). The hole transport material includes a compound represented by general formula (20), (21), (22), (23), (24), (25), (26), or (27). A charge of calcium carbonate as measured by charging the calcium carbonate through friction with the photosensitive layer is at least +6.5 μC/g. A Vickers hardness of the photosensitive layer at 45° C. is at least 17.0 HV. 2. The electrophotographic photosensitive member according to claim 1 , wherein{'sup': '1', 'in general formula (1), Rrepresents an alkyl group having a carbon number of at least 1 and no greater than 8 and having at least 1 halogen atom,'}{'sup': 21', '22', '23, 'in general formula (2), Rand Reach represent, independently of one another, an alkyl group having a carbon number of at least 1 and no greater than 4, and Rrepresents a halogen atom,'}{'sup': 31', '32', '33', '34', '35', '36', '31', '32', '33', '34', '35', '36, 'in general formula (3), R, R, R, R, R, and Reach represent, independently of one another, an aryl group having a carbon number of at least 6 and no greater than 14 and having at least 1 halogen atom or an alkyl group having a carbon number of at least 1 and no greater than 6, with the proviso that at least one of R, R, R, R, R, and Rrepresents an aryl group having a carbon number of at least 6 and no greater than 14 and having at least 1 halogen atom, X represents an oxygen atom, and Y represents an oxygen atom,'}{'sup': 41', '42, 'in general formula (4), Rand Reach represent, independently of one another, an alkyl group having a carbon number of at least 1 and no greater than 8 and ...

Electrophotographic receptor

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Electrophotographic receptor

Electronic photographic material

Electrophotographic receptor

Electrophotographic receptor

Electrophotographic receptor

Electrophotographic photosensitive member

An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support. The photosensitive layer comprises a compound having a structure represented by the general formula (1) or (2) as a charge-generating material: ##STR1## wherein A 1 and A 3 are respectively an alkyl radical, an aralkyl radical, an aromatic radical or a heterocyclic radical which may have a substituent; A 2 is hydrogen atom, or an alkyl radical, an aralkyl radical, an aromatic radical, or a heterocyclic radical which may have a substituent; A 1 and A 2 may be the same with or different from each other; A 1 and A 2 may be linked together to form a ring; and n is an integer of 1, 2, or 3.

Bridged charge transport materials having two bicyclic heterocycle hydrazones, electrophotoreceptor and electrophotographic imaging apparatus comprising the same, and electrophotographic imaging process using the same

개선된 전자사진 감광체는 도전성 지지체; 및 상기 도전성 지지체위의 광도전 요소를 포함하고, 상기 광도전 요소는 (a) 하기 화학식을 갖는 전하수송물질; 및 (b) 전하발생 화합물을 포함한다: The improved electrophotographic photosensitive member includes a conductive support; And a photoconductive element on the conductive support, wherein the photoconductive element comprises (a) a charge transport material having the formula: And (b) a charge generating compound: 여기서, R 1 , R 2 , R 3 , R 4 , R 5 및 R 6 는 각각 독립적으로, H, 알킬기, 알케닐기, 알키닐기, 방향족기, 또는 복소환기를 나타내고; X 1 및 X 2 는 각각 독립적으로 -(CH 2 ) n -기이고; X 3 는 연결기이고; 및 Q 1 , Q 2 , Q 3 , Q 4 , Q 5 , 및 Q 6 는 각각 독립적으로 O, S, NR, 또는 NC(=O)R ' 이고, 여기서 R 및 R ' 는 각각 독립적으로 H, 알킬기, 알케닐기, 알키닐기, 복소환기, 또는 방향족기이다. 대응하는 전자사진 장치 및 화상형성방법이 개시되어 있다. Wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 each independently represent H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; X 1 and X 2 are each independently a-(CH 2 ) n -group; X 3 is a linking group; And Q 1 , Q 2 , Q 3 , Q 4 , Q 5 , and Q 6 are each independently O, S, NR, or NC (═O) R ′ , wherein R and R ′ are each independently H, An alkyl group, an alkenyl group, an alkynyl group, a heterocyclic group, or an aromatic group. Corresponding electrophotographic apparatus and image forming methods are disclosed. 전자사진 감광체, 히드라존계 전하수송물질 Electrophotographic photosensitive member, hydrazone-based charge transport material

電子写真感光体

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Imaging member

The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a charge transport layer that is partially crosslinked, wherein the crosslinking is achieved by incorporating a small amount of compatible thermalsetting resins into the layer. Incorporation of these resins, using a fast curing system, have been shown to increase charge transport life while providing improved manufacture of a photoreceptor in which curing is faster and possible at a lower temperature.

Electrophotographic process

A chlorine-containing product is obtained by reacting N-(b -hydroxypropyl)-carbazole with thionyl chloride.ALSO:A polymeric photoconductive composition contains a polymeric reaction product as below, with or without the various additives mentioned in Specification 964,875, i.e. sensitisers, plasticizers, pigments, and agents controlling viscosity, free flow, ageing, oxidation, thermal stability and gloss; the polymeric products are those made by reacting (a) a polymer with a halogen-containing aromatic or heterocyclic compound, (b) a halogen-containing polymer with an aromatic or heterocyclic compound, or (c) a polymer and an aromatic or heterocyclic compound with a di- or poly-halogen compound. Details are given of the reactions of (a) polystyrene with N-(b -chloropropyl)-carbazole, and (b) polyvinyl chloride with fluorene, naphthalene and toluene. Other specified reactants are: chlorinated polyvinyl chloride, polyvinylbenzyl bromide, polyisophenylbenzyl bromide and a copolymer of vinyl chloride and styrene; anthracene, carbazole, phenthiazine, phenoxathiine, acridine, lophine and derivatives thereof. The di-halogen compound for method (c) may be a methylene halide, ethylene dibromide or chloroacetyl chloride. A Friedel-Crafts catalyst is used for each reaction. Suitable solvents for casting the products on to a support are methylene chloride, chloroform, carbon tetrachloride, dimethylformamide, acetone, benzene, tetrahydrofuran and mixtures thereof. Other synthetic resins may be present in the compositions, e.g. polyvinylcarbazole and a terpolymer of vinyl chloride, vinyl acetate and maleic anhydride. In particular, the polymeric photoconductors of Specifications 964,871, 964,875 and 964,877 may be present. Specification 964,778 also is referred to. The Provisional Specification states that the substances mentioned in Specifications 883,787, 883,788, 964,873, 964,874 and 964,872 may also be present.

Organophotoreceptor with charge transport material with two n,n,n-trisubstituted-amino groups

本发明提供改进的有机光接受器，其包含电导基底和在该电导基底上的光导元件，该光导元件包含：(a)右式的电荷传输材料，其中R 1 ，R 2 ，R 3 ，R 4 各自独立地选自烷基，烷芳基，或芳基；Y选自烷基，烷芳基，或芳基X是具有支链或线型的式－(CH 2 ) m －的连接基团，其中m为1－20的整数，并且一个或多个亚甲基可任选地用下述基团替换：O，S，C＝O，O＝S＝O，杂环基，芳香基，氨基甲酸乙酯，脲，酯基，NR 5 基，CHR 6 基，或CR 7 R 8 基，其中R 5 ，R 6 ，R 7 和R 8 独立地选自H，羟基，硫醇基，烷基，烷芳基，杂环基，或芳基；和E是环氧基；以及(b)电荷产生化合物。同时还描述了相应的电照相装置和成像方法。

Patent JPS6028342B2

아미노 치환 히드라존기와 에폭시기를 갖는 전하 수송물질, 이를 포함하는 유기감광체와 전자사진 화상 형성장치, 및 이를 이용한 전자사진 화상 형성 방법

개선된 유기감광체는 도전성 지지체; 및 상기 도전성 지지체 상부에 위치하고 (a) 하기 식을 갖는 전하 수송 물질 및 (b) 전하 발생 화합물을 가지는 광도전 요소를 포함한다: 상기 식에서, R 1 , R 2 , R 3 및 R 4 는, 독립적으로, 알킬기, 알카릴기, 아릴기, 또는 고리기의 일부이고; R 5 는 수소, 알킬기, 알카릴기, 아릴기, 또는 헤테로 고리기이고; X는 아릴기 또는 방향족 헤테로고리기와 같은 방향족기를 포함하고; Y는 분지형 또는 선형의 식-(CH 2 ) m -을 갖는 연결기이고, 여기서 m은 1 내지 20의 정수이고, 하나 이상의 메틸렌기가 O, S, C=O, O=S=O, 헤테로 고리기, 방향족기, 우레탄, 우레아, 에스테르기, NR 6 기, CHR 7 기, 또는 CR 8 R 9 기로 선택적으로 대치되고, 여기에서 R 6 , R 7 , R 8 , 및 R 9 은, 독립적으로, H, 히드록시기, 티올기, 알킬기, 알카릴기, 헤테로 고리기, 또는 아릴기이고; 및 Z는 에폭시기를 포함한다. 대응하는 전자사진 장치 및 화상 형성 방법이 개시되어 있다.

A charge transport material, an organophotoreceptor comprising the same, an electronphotographic imaging apparatus comprising the organophotoreceptor and an electrophotographic imaging process using the organophotoreceptor

본 발명은 도전성 기재 및 상기 도전성 기재 상의 광도전 요소를 포함하는 유기감광체로서, 상기 광도전 요소는, (a) 하기 화학식 1을 갖는 전하 수송 물질; 및 (b) 전하 생성 화합물을 포함하는 유기감광체에 관한 것이다:  The present invention provides an organophotoreceptor comprising a conductive substrate and a photoconductive element on the conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula (1); And (b) an organophotoreceptor comprising a charge generating compound: <화학식 1> <Formula 1> 상기 화학식 1 중, n은 1 및 10을 포함하는 1 내지 10의 정수이고; R 1 은 반응성 고리기, 에틸렌계 불포화기, 반응성 극성 그룹, 히드라존기 및 아진기로 이루어진 군으로부터 선택된 작용기를 나타내고; R 2 , R 3 , R 4 , R 5 및 R 6 는 독립적으로, H, 알킬기, 알케닐기, 알키닐기, 방향족기, 헤테로사이클릭기 또는 고리기의 일부를 나타내고; X는 결합 또는 연결기(linking group)이고; 및 Q는 O, S 또는 NR이고, 상기 R은 H, 알킬기, 아실기, 알케닐기, 알키닐기, 헤테로사이클릭기 또는 방향족기이다. In Formula 1, n is an integer of 1 to 10, including 1 and 10; R 1 represents a functional group selected from the group consisting of a reactive ring group, an ethylenically unsaturated group, a reactive polar group, a hydrazone group and a azine group; R 2 , R 3 , R 4 , R 5 and R 6 independently represent H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, a heterocyclic group or a part of a ring group; X is a linking or linking group; And Q is O, S or NR, wherein R is H, an alkyl group, an acyl group, an alkenyl group, an alkynyl group, a heterocyclic group or an aromatic group.

Azine-based charge transport materials

An improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where X comprises a linking group; R 1 and R 1 ′ comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and R 2 , R 3 , R 2 ′, and R 3 ′ comprise, each independently, an arylamine group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and methods of forming the charge transport material are described.

Organic electrophotographic organoreceptors with novel charge transport compounds

본 발명은 새로운 전하 수송 화합물을 포함한 유기 감광체, 이를 이용한 유기 감광체 및 이들을 이용한 전자사진적인 화상 형성 방법을 제공한다. 상기 전하 수송 화합물은 화학식 1로 표시된다. The present invention provides an organic photoconductor including a novel charge transport compound, an organic photoconductor using the same, and an electrophotographic image forming method using the same. The charge transport compound is represented by the formula (1). 상기식중, R 1 및 R 2 는 포함된 질소 원자와 함께 복소환, 방향족환 및 디나프틸아민으로 이루어진 군으로부터 선택된 하나의 그룹을 형성하거나; 또는 R 1 은 C5-C40 아릴기이고, R 2 는 설포라닐기, 4-(9H-플루오렌-9-일리덴)벤질기, 피롤릴(pyrrolyl)기, 피라졸릴(pyrazolyl)기, 벤조트리아졸릴기, 스틸베닐기, 테트라아졸릴기이거나; 또는 R 1 은 수소, C1-C30 알킬기, C5-C40 아릴기이고, R 2 는 설포닐페닐기이고, R 3 은 수소, C1-C30 알킬기, C5-C40 아릴기, 복소환기 또는 탄화수소기이고; 및 Q는 3-카바졸기이다. 본 발명은 기계적 특성과 정전기적 특성이 우수한 신규의 유기감광체용 전하 수송 화합물을 제공한다. 이러한 유기 감광체는 액체 토너와 사용되어 고품질 화상을 형성한다. 화상 시스템의 고품질은 싸이클 반복후에도 유지된다. Wherein R 1 and R 2 together with the nitrogen atom included form one group selected from the group consisting of heterocycle, aromatic ring and dinaphthylamine; Or R 1 is a C5-C40 aryl group, R 2 is a sulfolanyl group, 4- (9H-fluorene-9-ylidene) benzyl group, a pyrrolyl group, a pyrazolyl group, benzotria A zolyl group, stilbenyl group, tetraazolyl group; Or R 1 is hydrogen, C1-C30 alkyl group, C5-C40 aryl group, R 2 is sulfonylphenyl group, R 3 is hydrogen, C1-C30 alkyl group, C5-C40 aryl group, heterocyclic group or hydrocarbon group; And Q is a 3-carbazole group. The present invention provides a novel charge transport compound for organophotoreceptors having excellent mechanical and electrostatic properties. Such organic photoreceptors are used with liquid toners to form high quality images. The high quality of the imaging system is maintained even after cycle repetition.

Electrophotographic sensitive body

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Electrophotographic receptor

Electrophotographic reproduction material

Process for producing 2,4,6-triphenylpyrillium tetrafluoroborate

Electrophotographic sensitive body

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Electrophotographic photosensitive member having a hydrazone containing layer

An electrophotographic photosensitive member comprises a layer containing a hydrazone compound represented by the following formula (1) or (2): ##STR1## wherein, Z is an atomic group necessary to complete a substituted or unsubstituted heterocyclic ring; R 11 , R 12 , R 21 , R 22 and R 23 represent substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl, and the combinations of R 11 with R 12 and of R 22 with R 23 can form each a pyrrolidine ring, piperidine ring, or morpholine ring; n is 1 or 2; and A is a monovalent heterocyclic compound residue.

Electrophotographic photosensitive member having a photosensitive layer containing a hydrazone compound

An electrophotographic photosensitive member comprises a layer containing a binder and at least one hydrazone compound represented by the following formula (1), (2), (3), (4), or (5): ##STR1##

Electrophotographic sensitive body

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Electrophotographic sensitive body

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Electrophotographic receptor

Electrophotographic sensitive body

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Electrophotographic photoreceptor

Electrophotographic receptor of composite type

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Charge transport cpd. for electrostatographic recording material - is di:aryl styryl pyrazoline cpd., to give high speed and low residual potential without fatigue

Charge transporting substance (I) used in an electrostatographic recording material, having a conductive substrate with a coating based on (I) and a high mol. binder (II), is a 2,5-diaryl-2-styryl-pyrazoline cpd. of formula: (in which R1-3 are opt. substd. aryl gps.). Pref. R1-3 are phenyl, opt. with an amino, di(ar)alkylamino, diarylamino, alkylarylamino, morpholino, piperazino, piperidino or alkoxy gp. in the 4-posn. The material also contains a charge-producing substance (III) in the same or an adjacent layer, (III) pref. being an inorganic photoconductor or an organic dyestuff or pigment. (II) is a (meth)acrylic, polycarbonate, polyester, PVC, vinylidiene chloride-acrylonitrile copolymer, PVDC and/or phenol-HCHO resin. (II) is used in an amt. of 0.8-4 (wt.) pts./pt. (I). The (I) layer is 5-30 mu m thick and the (III) layer 0.05-5 (0.1-3) mu m thick. The material does not suffer fatigue and has high speed and low residual potential when used repeatedly. The (I) layer has high homogeneity and film strength and excellent stability.

Stabilized organic layered photoconductive device

This invention is generally directed to an organic layered photoresponsive device containing a charge transport layer comprised of a composition of the following: ##STR1## dispersed in a highly insulating and transparent organic resinous material, wherein x is selected from the group consisting of ortho (CH 3 ), meta (CH 3 ), para (CH 3 ), ortho (Cl), meta (Cl), and para (Cl), and dispersed in said transport layer from about 0.1 weight percent to about 10 weight percent of an additive composition selected from the group consisting of ##STR2## wherein R and R 1 are independently selected from the group consisting of ethylene groups containing from about 1 to about 6 carbon atoms such as methylene, ethylene, propylene, butylene and the like, and n is 0 or 1; ##STR3## wherein R 2 and R 3 are independently selected from alkyl groups containing from about 1 to about 6 carbon atoms, and R 4 is selected from the group consisting of alkyl groups containing from about 1 to about 6 carbon atoms, CH 2 OH, (CH 3 ) 2 OH, and ##STR4## wherein R 2 is an alkyl group; ##STR5## wherein R 6 and R 7 are alkyl groups; and ##STR6## wherein R 8 , R 9 , R 10 , and R 11 are alkyl groups.

Patent JPS592023B2

Photoconductor overcoated with triarylpyrazoline charge transport layer

Electrophotographic plates are provided having a charge generation layer and a separate charge transport layer comprising a tri-aryl pyrazoline compound having the formula: WHEREIN N IS ZERO OR ONE, AND A, A1 and A2 are each aryl radicals.

ELECTROPHOTOGRAPHIC PLATE

Layered electrophotographic plates

Electrophotographic recording material

Patent FR2214139B1

ELECTROPHOTOGRAPHIC PLATES FICATED LAYERS

Composition for transferring photoconductive charge

Photosensitive drum for electrophotography

Organic photoconductor

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Electrophotographic recording material

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Electrophotographic dual layer recording material

This invention relates to an electrophotographic recording material consisting of an electroconductive support material and a photoconductive double layer of organic materials which consists of a homogeneous, opaque, charge carrier producing dyestuff layer and of a transparent top layer of insulating materials with at least one charge transporting compound.

Patent JPS645700B2

Electrophotographic photosensitive member

Disazo photoconductive material and electrophotographic photosensitive member having disazo pigment layer

An organic photoconductive material represented by the formula ##STR1## wherein A is an atomic group necessary for completing a substituted or unsubstituted aromatic hydrocarbon ring, Ar is a substituted or unsubstituted group, and Cp is a coupler residue.

MULTILAYER ELECTROPHOTOGRAPHIC ELEMENT.

Electrophotographic photosensitive material

An electrophotographic photosensitive material is pro­ vided, which has a photosensitive layer formed on an elec­ troconductive substrate and containing a polymeric binder and an organic photoconductor. The organic photoconduc­ tor is expressed by the formula: In the formula R¹ and R² may form a pyrazolone ring to­ gether with > C = N-N<, and, if they do not, then R² and R³ may form part of a carbocyclic or heterocyclic ring structure with the carbon atom to which they are attached. X may be one of a number of groups containing the radical --, --, --N<, --N=C<, --NHN< --NHN=C< or where R¹ and R² form a pyra­ zolone ring, also In the above meanings of X, A is oxygen or sulfur and m is 0 or 1.

NEW 5H-DIBENZO (A, D) CYCLOHEPTANE- (ENE) YLIDENE DERIVATIVE, PRODUCTION METHOD THEREOF AND PHOTOSENSITIVE ELECTROPHOTOGRAPHIC SUPPORT CONTAINING THE SAME

Electrophotographic photosensitive member

An electrophotographic photosensitive member comprises a photosensitive layer on a conductive support, wherein said photosensitive layer contains a compound, having structures (A) and (B) together in its structural formula and wherein said photosensitive layer contains a thioether compound represented by Formula (VI).

Photosensitive member for electrophotography

A photosensitive member for electrophotography, including an electroconductive substrate and a photosensitive layer disposed thereon, wherein the photosensitive layer comprises a triarylamine compound represented by the following general formula (I): wherein Ar 4 and Ar 5 respectively denote a benzene ring or aromatic fused-ring hydrocarbon group capable of having a substituent; R 1 and R 2 respectively denote a hydrogen atom, alkyl, alkoxyl or halogen atom; and at least one of Ar 4 and Ar 5 is an aromatic fused-ring hydrocarbon group.

Electrophotographic photoreceptor

Photosensitive element for electrophotography

Material for electrophotographic reproduction

Patent JPS547580B2

Patent JPH0466025B2

Electrophotographic recording material

ELECTROPHOTOGRAPHIC PLATE

Patent FR2214139A1

Electrophotographic phtoreceptor

Electrophotographic composite receptor

Electrophotographic receptor

Patent JPS6059590B2

Electrophotographic receptor

Electrophotographic receptor

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Electrophotographic receptor

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Photosensitive body

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Electrophotographic receptor

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Light shock resistant electrophotographic imaging member

An electrophotographic imaging member is improved in light shock resistance by including in the charge transport layer a light shock resisting additive of triethanolamine, morpholine, an imidazole or mixtures thereof. The imaging member preferably has a charge generating layer containing hydroxygallium phthalocyanine, alkoxygallium phthalocyanine and mixtures thereof as the photogenerating particles. The method of rendering an imaging member including such a charge generating layer acceptably resistant to light shock includes forming a charge transport layer in association with the charge generating layer to contain the light shock resisting additive of triethanolamine, morpholine, an imidazole or mixtures thereof.

Photosensitive member having photosensitive layer which comprises amino compound as charge transporting material

The present invention relates to an improvement of a photosensitive member having a photosensitive layer which contains a specific amino compound as a charge transporting material.

Titanyl phthalocyanine silanol terphenyl photoconductors

A photoconductor containing an optional supporting substrate, a photogenerating layer comprised of a chelating agent and a titanyl phthalocyanine; and at least one charge transport layer comprised of at least one charge transport component; and wherein a silanol is present in at least one of the photogenerating layer and charge transport layer, and wherein said at least one charge transport component is comprised of wherein X and Y are independently a suitable hydrocarbon, a halogen, or mixtures thereof.

Silanol and perylene in photoconductors

A photoconductor containing an optional supporting substrate, a perylene photogenerating layer, and at least one silanol containing charge transport layer.

Triazole containing photogenerating layers in photoconductors

A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and where the photogenerating layer contains a triazole.

Nitrogen heterocyclics in photoconductor charge transport layer

A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and a nitrogen heterocyclic component such as a triazine.

Phenothiazine containing photogenerating layer photoconductors

A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the photogenerating layer contains a phenothiazine.

ELECTROPHOTOGRAPHIC PLATE OF THE COMPLEX TYPE.