Abstract: The present invention relates to organic electroluminescent devices which comprise aromatic ring systems with two or three condensed rings as emitter materials, and to their possible uses.

Abstract: Disclosed herein are compounds and related compositions for the treatment of viral infection, including RNA viral infection, and compounds that can modulate the RIG-I pathway in vertebrate cells, including compounds that can activate the RIG-I pathway.

Abstract: A hydroxygallium porphyrazine derivative mixture including: a plurality of different hydroxygallium porphyrazine derivatives each represented by the following General Formula (A-2): where A1, A2, A3, A4, B1, B2, B3 and B4 each independently represent a nitrogen atom or a carbon atom bonded to hydrogen, with the proviso that both of A1 and B1 are carbon atoms each bonded to hydrogen or only one of A1 and B1 is a nitrogen atom, both of A2 and B2 are carbon atoms each bonded to hydrogen or only one of A2 and B2 is a nitrogen atom, both of A3 and B3 are carbon atoms each bonded to hydrogen or only one of A3 and B3 is a nitrogen atom, and both of A4 and B4 are carbon atoms each bonded to hydrogen or only one of A4 and B4 is a nitrogen atom.

Abstract: A photoconductor, which contains an electrically conductive support, and at least a photoconductive layer provided over the electrically conductive support, wherein the photoconductive layer contains a compound represented by the following general formula (1): where R1, R2, R3, R4, R5 and R6 are each independently a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, an alkoxy group, or an aralkyloxy group; n, a, b, c, and d are each independently an integer of 1 to 4 and m is 1 or 2; and a plurality of R1, R2, R3, R4, R5 or R6 may be the same or different when n, m, a, b, c, or d is an integer of 2 or greater.

Abstract: An image holding member for an image forming apparatus includes: a substrate; and a photosensitive layer on the substrate, the photosensitive layer containing a compound including a partial structure represented by the following Formula (II-2) wherein in Formula (II-2), Ar represents a substituted or unsubstituted phenyl group, a substituted or unsubstituted monovalent polynuclear aromatic hydrocarbon group having from 2 to 10 aromatic rings, a substituted or unsubstituted monovalent condensed aromatic hydrocarbon group having from 2 to 10 aromatic rings, or a substituted or unsubstituted monovalent aromatic heterocyclic group; q represents 0 or 1; and n's each independently represent an integer of from 0 to 7.

Abstract: To provide an electrophotographic photoreceptor having a high sensitivity, a good balance of various electric properties such as chargeability and residual potential, a good stability of the coating solution, and an excellent light resistance. An electrophotographic photoreceptor comprising an electroconductive support having thereon a photosensitive layer, wherein the photosensitive layer contains a compound represented by the following formula (1): (wherein R1 represents a group having a chiral center, R2 represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group which may have a substituent, R3 and R4 each independently represents an alkylene group which may have a substituent, or an arylene group which may have a substituent, and R5, R6, R7 and R8 each independently represents an alkyl group which may have a substituent, or an aryl group which may have a substituent, and at least one member of R5 to R8 is an aryl group having a substituent).

Abstract: A composition according to the present invention contains at least a triarylamine compound and at least one bicyclic compound selected from the group consisting of those of the general formulas [1] to [4], wherein the triaryl amine compound is dissolved in the at least one bicyclic compound where R1 each independently represents a hydrogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group, a fluorine atom or a chlorine atom; A, B, C and F each independently represents either —CR22—, —O— or —NR2—; D and E each independently represents either —CR2? or —N?; G represents —CR22—; H represents —CR2?; and R2 represents a hydrogen atom, a methyl group or a halogen atom.

Abstract: The present invention provides an azo pigment comprising a group represented by the general formula (1) below, an electrophotographic photosensitive member comprising an intermediate layer comprising the azo pigment, and a process cartridge and an electrophotographic apparatus that comprise the electrophotographic photosensitive member.

Abstract: To provide an electrophotographic photoreceptor having a high sensitivity, a good balance of various electric properties such as chargeability and residual potential, a good stability of the coating solution, and an excellent light resistance. An electrophotographic photoreceptor comprising an electroconductive support having thereon a photosensitive layer, wherein the photosensitive layer contains a compound represented by the following formula (1): (wherein R1 represents a group having a chiral center, R2 represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group which may have a substituent, R3 and R4 each independently represents an alkylene group which may have a substituent, or an arylene group which may have a substituent, and R5, R6, R7 and R8 each independently represents an alkyl group which may have a substituent, or an aryl group which may have a substituent, and at least one member of R5 to R8 is an aryl group having a substituent).

Abstract: A hydroxygallium porphyrazine derivative mixture including: a plurality of different hydroxygallium porphyrazine derivatives each represented by the following General Formula (A-2): where A1, A2, A3, A4, B1, B2, B3 and B4 each independently represent a nitrogen atom or a carbon atom bonded to hydrogen, with the proviso that both of A1 and B1 are carbon atoms each bonded to hydrogen or only one of A1 and B1 is a nitrogen atom, both of A2 and B2 are carbon atoms each bonded to hydrogen or only one of A2 and B2 is a nitrogen atom, both of A3 and B3 are carbon atoms each bonded to hydrogen or only one of A3 and B3 is a nitrogen atom, and both of A4 and B4 are carbon atoms each bonded to hydrogen or only one of A4 and B4 is a nitrogen atom.

Abstract: A semiconductor wafer may include a dummy field configured to enable overlay measurements. The enhanced dummy field may include a plurality of encoding blocs that enable OVL measurements to be made throughout the enhanced dummy field.

Abstract: Provide is an electrophotographic photoreceptor exhibiting excellent evenness of halftone images together with fine line reproduction, and an image forming method thereof, as to a photoreceptor in which an oxytitanium phthalocyanine pigment having a maximum diffraction peak at a Bragg angle (2?±0.2°) of 27.2° in CuK? X-ray diffraction. Also disclosed is an electrophotographic photoreceptor possessing a body having cylindrical conductive support provided thereon photosensitive layer containing oxytitanium phthalocyanine pigment having maximum diffraction peak at a Bragg angle (2?±0.2°) of 27.2° in CuK? X-ray diffraction, and flanges jointed at both ends of the body, wherein at least one of flanges is fitted with driving shaft having drive hole having at least 3 sides, and a ratio B/A of cross-sectional area B of engaging part of rotation shaft to rotate the electrophotographic photoreceptor with respect to cross-sectional area A of the drive hole is 0.890-0.998.

Abstract: 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.

Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and wherein the charge transport layer also contains a thiadiazole.

Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and wherein the charge transport layer also contains a thiadiazole.

Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one, charge transport layer, such as 1, 2, 3, or 4 layers, and more specifically, 2 layers, and wherein the photogenerating layer contains a thiadiazole.

Abstract: 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 n is an integer between 1 and 10, inclusive; R1 comprises 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 an azine group; R2, R3, R4, R5, and R6 comprise, each independently, 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 bond or a linking group; and Q is O, S, or NR where R is H, an alkyl group, an acyl group, an alkenyl group, an alkynyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound.

Abstract: 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 Y1 and Y2 comprise, independently, an aromatic group; X1 and X2 are each a linking group; W1 and W2 are each a —(CH2)n— group or a —(CH2)n-1—C(?O)— group, where n is an integer between 1 and 10; Ar1 and Ar2 comprise each a divalent aromatic group; Q1 and Q2 are each O, S, or NR; Z1 and Z2 comprise, independently, a bond, a vinyl group, a —CR1?N—NR2— group, or a —CR3?N—N?CR4— group; and R, R1, R2, R3, and R4 comprise, independently, H, an alkyl group, an alkenyl group, an alkynyl group, an acyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: To provide an electrophotographic photoreceptor having a high sensitivity, a good balance of various electric properties such as chargeability and residual potential, a good stability of the coating solution, and an excellent light resistance. An electrophotographic photoreceptor comprising an electroconductive support having thereon a photosensitive layer, wherein the photosensitive layer contains a compound represented by the following formula (1): (wherein R1 represents a group having a chiral center, R2 represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group which may have a substituent, R3 and R4 each independently represents an alkylene group which may have a substituent, or an arylene group which may have a substituent, and R5, R6, R7 and R8 each independently represents an alkyl group which may have a substituent, or an aryl group which may have a substituent, and at least one member of R5 to R8 is an aryl group having a substituent).

Abstract: Improved charge transport material comprises the formula: where M comprises a metallocenyl group; Y comprises a functional group selected from the group consisting of a metallocenyl group, a hydrazone group, an azine group, a reactive ring group, an ethylenically unsaturated group, and combinations thereof; R1 and R2 comprise, each independently, H, an organic group, or an organometallic group; and X is a bond, O, S, an aminylene group, a sulfonyl group, an organic linking group, or a combination thereof.

Abstract: Improved charge transport material having the formula: Y-Z-X-E where E comprises a functional group selected from the group consisting of a reactive ring group, a vinyl ether group, an acrylamido group, and a methacrylamido group; X comprises a bond, O, S, an aminylene group, a sulfonyl group, an organic linking group, or a combination thereof; Z comprises a 1,3,6,8-tetraoxo-1,3,6,8-tetrahydrobenzo[lmn][3,8]phenanthroline-2,7-diyl group; and Y comprises H or an organic group, such as an alkyl group, an aryl group, an aromatic heterocyclic group, and combinations thereof.

Abstract: 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 E comprises a functional group selected from the group consisting of a reactive ring group, an ethylenically unsaturated group, a hydrazone group, and an azine group; R1, R2, and R3 comprise, each independently, H or an organic group; X is a bond or a linking group, with the proviso that when E comprises a reactive ring group, X is a linking group; and Y is a nitrogen-containing aromatic heterocyclic group; and (b) a charge generating compound.

Abstract: 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 Y comprises an aromatic group; V1 and V2 comprise, each independently, a vinyl containing group; and R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an acyl group, an ether group, an ester group, an alkenyl group, an alkynyl group, a heterocyclic group, an aromatic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, electrophotographic imaging methods, and charge transport materials are also described.

Abstract: 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 Y comprises an aromatic heterocyclic group; X is a bond or a linking group; E comprises a reactive ring group or a reactive functional group; and R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an acyl group, an ether group, an alkenyl group, an alkynyl group, a heterocyclic group, an aromatic group, or a part of a ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, electrophotographic imaging methods, and bridged charge transport materials derived form the charge transport material above are also described.

Abstract: There is provided an optical recording medium comprising a recording layer containing a charge-generating material capable of generating a first electric charge and a second electric charge by beam irradiation, the second electric charge having a different polarity from that of the first electric charge, a charge-transport material enabling at least the first electric charge to be transported to isolate the first electric charge and the second electric charge, and a trapping material retaining the first electric charge. The optical characteristics of the recording layer is changed in accordance with changes in spatial distribution of the first and second electric charges, and the trapping material is provided with a conjugated system and with at least one nitrogen-containing heterocyclic group, and bonded through an unsaturated carbon atom of the heterocyclic group to the conjugated system.

Abstract: 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 Y comprises an aromatic group; X is a —(CH2)n— group, where n is an integer between 1 and 10, inclusive, and one or more of the methylene groups is optionally replaced by another atom or group; Q1, Q2, and Q3 are, each independently, O, S, or NR; and R, R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an amino group, an acyl group, an alkoxy group, an alkylsulfanyl group, an aromatic group, or a heterocyclic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: 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 R1, R2, R3, R4, R5, and R6 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; X1 and X2 are, each independently, a —(CH2)n— group, where n is an integer between 1 and 10, inclusive; X3 is linking group; and Q1, Q2, Q3, Q4, Q5, and Q6 are, each independently, O, S, NR, NC(?O)R? where R and R? are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: An improved organophotoreceptor includes an electrically conductive substrate and a photoconductive element on the electrically conductive substrate where the photoconductive element comprises: a) a charge transport material having the following formula: where X is a linking group; Y1 and Y2 are, each independently, a phenothiazine group, a phenoxazine group, or a phenazine group; R1, R2, R3, and R4 are, each independently, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; and R5 and R6 are, each independently, a hydrogen, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport compound having the formula where R1 and R2 are, independently, hydrogen, an alkyl group, an alkaryl group or an aryl group; X is an aromatic group; Y is an (N,N-disubstituted)arylamine; Z is (CH2)m group where m is an integer between 0 and 30 where one or more of the methylene groups is optionally replaced by O, S, C?O, O?C—O, O?C—NR3, sulfoxide, sulfate, phosphate, an aryl group, urethane, urea, NR4 group, CHR5 group, or CR6R7 group where R3, R4, R5, R6, and R7 are, independently, H, hydroxyl, thiol, an amine group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group, and E is a bond, O, S, C?O, NR8, CR9R10 group, a hetrocyclic group, or an aromatic group where R8, R9, and R10 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; and (b) a charg

Abstract: 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 R1, R2, R3, and R4 are, independently, an alkyl group, an alkaryl group, an aryl group, or a part of a cyclic group; R5 is hydrogen, an alkyl group, an alkaryl group, an aryl group, or a heterocyclic group; X comprises an aromatic group, such as an aryl group or an aromatic heterocyclic group; Y is a linking group; and Z comprises an epoxy group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: The invention is to provide an organic photoconductive material capable of realizing electrophotographic photoreceptors of high reliability that have high charge potential, high sensitivity, good responsiveness to light and good durability, of which the characteristics do not lower even when they are driven at low temperatures or at high speed and even when they are exposed to light, and to provide an electrophotographic photoreceptor that comprises the material and an image-forming apparatus. An organic photoconductive material of the following general formula (1), for example, an enamine compound of the following structural formula (1-1) is produced.

Abstract: 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 n is an integer between 2 and 6, inclusive; R1 and R2 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 0 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R5, and R6 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; Y comprises a bond, C, N, O, S, a branched or linear —(CH2)p— group where p is an integer between 0 and 10, an aromatic group, a cycloalkyl group, a heterocyclic gr

Abstract: 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 R1 and R2 are, each independently, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; R3 and R4 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; X1 and X2 are, each independently, a linking group; Y1 and Y2, each independently, comprise an arylamine group; and Z is a bridging group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer on the electroconductive substrate, wherein the photosensitive layer includes at least a compound having a substituted or unsubstituted alkylamino group and a charge transport material, and wherein an oxidation potential (Eox1) of the substituted or unsubstituted alkylamino group and an oxidation potential (Eox2) of the charge transport material satisfy the following relationship (I): Eox1?Eox2??0.2.

Abstract: An organophotoreceptor comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a charge transport composition with the formula where Y1 and Y2 are, each independently, an arylamine group; X1 and X2 are, each independently, a linking group; R1 and R2 are, each independently, a hydrogen, an alkyl group, an alkenyl group, a heterocyclic group, an aromatic group; Z is a bridging group; and n is a distribution of integers between 1 and 100,000 with an average value greater than 1; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: 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 R1 and R2 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R5, and R6 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; E is an epoxy group; and Z is a phenothiazine group, a phenoxazine group, a phenoxathiin group, a dibenzo(1,4)dioxin group, a thianthrene group, or a phenazine group; and (b) a charge generating compound.

Abstract: There is provided an optical recording medium comprising a recording layer containing a charge-generating material capable of generating a first electric charge and a second electric charge by beam irradiation, the second electric charge having a different polarity from that of the first electric charge, a charge-transport material enabling at least the first electric charge to be transported to isolate the first electric charge and the second electric charge, and a trapping material retaining the first electric charge. The optical characteristics of the recording layer is changed in accordance with changes in spatial distribution of the first and second electric charges, and the trapping material is provided with a conjugated system and with at least one nitrogen-containing heterocyclic group, and bonded through an unsaturated carbon atom of the heterocyclic group to the conjugated system.

Abstract: Improved organophotoreceptor comprises a photoconductive element comprising: (a) a charge transport material having the formula where Y1 and Y2 are, each independently, a bond, —CR1?N—NR2—, or —CR3?N—N?CR4— where R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, or an aromatic group; X1 and X2 are, each independently, a linking group; T1 and T2 are, each independently, a thiiranyl group, H, an alkyl group, an alkenyl group, or an aromatic group with the proviso that at least one of T1 and T2 is a thiiranyl group; and Ar comprises an aromatic group with the proviso that when both Y1 and Y2 are a bond and one of T1 and T2 is not a thiiranyl group, Ar comprises a bis[(N,N-disubstituted)amino]aromatic group or a bicarbazole group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.

Abstract: This invention includes an organophotoreceptor having an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a polymeric charge transport composition with the formula where Y1 and Y2 are, each independently, a bond, a —CR1?N—NR2— group, or a —CR3?N—N?CR4— group; R, R?, R?, R1, R2, R3, and R4 comprise, each independently, H, an alkyl group, an alkenyl group, a heterocyclic group, an aromatic group, or a part of a ring group; X1 and X2 are, each independently, a linking group; T2 comprises a thiiranyl group, H, an alkyl group, an alkenyl group, or an aromatic group; Ar comprises an aromatic group; Z is a bridging group; and n is a distribution of integers between 1 and 100,000 with an average value at least 2; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging processes are also described.

Abstract: The invention generally relates to the use of poly-3,3?-dialkyl-2,2?:5?,2?-terthiophenes as charge transport materials or semiconductors in electrooptical, electronic or electroluminescent devices, and to charge transport and semiconducting components and devices comprising poly-3,3?-dialkyl-2,2?:5?,2?-terthiophenes.

Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:

Abstract: An improved organophotoreceptor includes an electrically conductive substrate and a photoconductive element on the electrically conductive substrate where the photoconductive element comprises:

Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer on the electroconductive substrate, wherein the photosensitive layer includes at least a compound having a substituted or unsubstituted alkylamino group and a charge transport material, and wherein an oxidation potential (Eox1) of the substituted or unsubstituted alkylamino group and an oxidation potential (Eox2) of the charge transport material satisfy the following relationship (I):

Abstract: The invention is to provide an organic photoconductive material capable of realizing electrophotographic photoreceptors of high reliability that have high charge potential, high sensitivity, good responsiveness to light and good durability, of which the characteristics do not lower even when they are driven at low temperatures or at high speed and even when they are exposed to light, and to provide an electrophotographic photoreceptor that comprises the material and an image-forming apparatus. An organic photoconductive material of the following general formula (1), for example, an enamine compound of the following structural formula (1-1) is produced. Using the organic photoconductive material for the charge-transporting substance to be in a photosensitive layer on a conductive support, an electrophotographic photoreceptor is fabricated, and this is mounted on an image-forming apparatus.

Abstract: A phenothiazine or phenoxazine derivative represented by the following general formula (1), a charge-transporting material comprising the derivative, and an electrophotographic photoreceptor containing the charge-transporting material are disclosed. The charge-transporting material has good solubility in binder polymers, satisfactory sensitivity, and a low residual potential.

Abstract: Disclosed is a solution for forming photoconductive layer for electrophotographically manufacturing a luminescent screen on an interior surface of a faceplate panel for a CRT. The solution consists of 0.01 to 10% by weight of bis dimethyl phenyl diphenyl butatriene, 1 to 30% by weight of polystyrene, 30 to 100% by weight of 2,5-bis(4-diethyl aminophenyl)-1,3,4-oxadiazole, against 100% by weight of polystyrene and the remainder of solvent. The photoconductive layer manufactured using the solution facilitates performing all the processes in a visible light environment with safety in work operations, because the solution contains 2,5-bis(4-diethyl aminophenyl)-1,3,4-oxadiazole, instead of trinitro fluorenone(TNF) of cancer-causing material, as ultraviolet-sensitive material.

Abstract: An electrophotographic photoreceptor comprising a conductive substrate having thereon a photosensitive layer, the photosensitive layer containing a hydroxymetal or hydroxysilicon phthalocyanine pigment represented by formula (I) as a charge generating material, the phthalocyanine pigment having been treated with an orcanometallic compound having a hydrolyzable functional group or a hydrolysis product thereof: ##STR1## wherein Me represents A, Ga, In, Si, Ge or Sn; X representsH, C, Br or I; m represents an integer of from I to 4; and n represents 1 where Me is A, Ga or In, or 2 where Me is Si, Ge or Sn.

Abstract: An electrophotographic photosensitive member has a support and a photosensitive layer provided thereon. The photosensitive layer contains a hindered phenol compound and a fluorene compound represented by the following formula (1): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently substituted or unsubstituted aryl, and R.sub.5 and R.sub.6 are each independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl.

Abstract: The present invention provides an electrophotographic photosensitive member containing an azo-calix ?n! arene compound produced by coupling a calix ?n! arene compound and an azonium compound having at least two azo groups. The present invention also provides an electrophotographic apparatus and a process cartridge each produced with the electrophotographic photosensitive member.

Abstract: A coated donor roll comprises a core with a coating, the coating comprising a charge transporting polymer, an organic acid metal salt compound, and iodine.