Organophotorezeptor, eine Ladungstransportverbindung enthaltend mit Hydrazongruppen

Organischer Photorezeptor mit einem Ladungstransportmaterial, das eine Vinylethergruppe enthält

Electrophotographic charge transport layer compsn. - contg. co-polycarbonate based on bisphenol-alkane and bisphenol, avoiding use of halogenated solvent

Compsn. for charge transport layers in electrophotographic elements contains polycarbonate resin(s) (I) with recurring units of the formula (I). In (I), R1-2 = H, alkyl or aryl; R3-18 = H, halogen, alkyl or aryl; k and m = positive integers such that k/m = 1-10. Pref., the compsn. also contains a halogen-free solvent; and, as charge transport substance, a styryl cpd. of formula (II); (II) + a hydrazone cpd. of formula (III); a hydrazone cpd. of formula (IV); or a benzidine cpd. of formula (V), (where Ar1-4 and Ar9-12 = opt. substd. aryl gps.; n = 0 or 1; R19-20 = alkyl, phenyl, benzyl or methoxyphenyl; R21 = H, alkyl or O-R; R = linear or branched 5-10C alkyl or 7-10C aralkyl; R22 = alkyl, Ph, MeO, EtO, benzyl, methoxyphenyl, tolyl or naphthyl; R23-24 = H, alkyl, alkoxy or halogen; R25 = H or an opt. substd. alkyl, aralkyl, aryl, condensed polycyclic or heterocyclic gp.; Ar5-8 = an opt. substd. alkyl, aryl, condensed polycyclic or heterocyclic gp., one of Ar5 and Ar6 may = H and Ar5 + Ar6 ...

Polyazine-basierende Ladungstransportverbindungen

Verbrückte Ladungstransportmaterialien mit zentraler Schwefelatombindung

Imaging members with improved wear characteristics

Electrostatic Recording.

... 1,152,582. Typewriters; ink ribbons &c. GAF CORP. 1 June, 1966 [10 June, 1965], No. 24386/66. Heading B6F. [Also in Divisions G2, H1 and H4] Electrostatographic recording is effected using a recording material comprising a photoconductive layer and a dielectric layer by uniformly exposing the photoconductive layer, applying an electrostatic pattern to the dielectric layer using a pattern of charged needles while maintaining the photo-conductive layer at a reference potential, developing and fixing. The recording material may comprise a support or a photoconductive or dielectric layer acting as a support, and may be uniformly exposed before or during application of the electrostatic pattern. The charged needles may be con- ...

ELECTROPHOTOGRAPHIC LIGHT-SENSITIVE MATERIALS

Imaging members with improved wear characteristics

Benzaldehyde-based hydrazone compounds of the formula wherein A represents a monocyclic or polycyclic divalent aromatic radical including at least one hydroxy-terminated substituent; R 1 represents an N,N-dialkyl amino, N,N-diaryl amino or N-alkyl,N-aryl amino group; each R 2 independently represents an alkyl, halogen, alkoxy group or substituted or unsubstituted monocyclic or polycyclic monovalent aromatic radical, with the proviso that at least one R 2 is aromatic; and R 3 represents hydrogen, alkyl or a substituted or unsubstituted monocyclic or polycyclic monovalent aromatic radical. These compounds are suitable for use as charge transport agents in imaging members.

Photoconductive hydrazones and ketazines, and their use in electrophotographic photosensitive members

An electrophotographic photosensitive member is characterized by having a layer containing at least one of hydrazone group compounds represented by the following formula (1) or of ketazine group compounds represented by the following formula (2): Formula (1) In the formula, R11 and R12 independently of one another represent hydrogen, substituted or unsubstituted aryl, or substituted or unsubstituted heterocyclic radical; R13 and R14 independently of one another represent subsituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heterocyclic radical; and R15 represents a divalent organic residue. Formula (2) In the formula, R21, R22, R23, and R24 independently one another represent substituted or unsubstituted alkyl, substituted or substituted aralkyl, or substituted or unsubstituted aryl, or R21 and R22, together with the nitrogen which links them, represent cyclic amino radical, and R23 and R24, together ...

ELECTROPHOTOGRAPHIC PHOTORECEPTOR

HYDRAZONE CONTAINING CHARGE TRANSPORT ELEMENT

Electrophotographic photoconductors comprising polyaryl ethers

ELECTROPHOTOGRAPHIC ELEMENT CONTAINING A HYDRAZONE PHOTO CONDUCTOR IN THE CHARGE TRANSPORT LAYER

ELECTROPHOTOGRAPHIC ELEMENT ABSTRACT OF THE DISCLOSURE An electrophotographic element is prepared by forming a photoconductive layer containing a hydrazone compound therein on an electroconductive support member. The hydrazone compounds represented by the following general formula, are useful as photoconductive materials and as charge transport materials for use in electro-photography:

PHOTOCONDUCTIVE MEMBERS

A photoconductive imaging member including at least a charge generating layer, a charge transport layer, and an overcoat layer. The overcoat layer includes a cured or substantially crosslinked product of at least a phenol compound and a charge transport compound.

ELECTROPHOTOGRAPHIC PHOTOREZEPTOREN.

The electrophotographic photosensitive member and its production method, process cartridge and electrophotographic apparatus

ELECTROPHOTOGRAPHIC ELEMENT CONTAINING OF THE PHENYLHYDRAZONES

ELECTROPHOTOGRAPHIC RECEPTORS

AZINE-BASED CHARGE TRANSFER MATERIAL HAVING TWO REACTIVE RINGS, AND ORGANIC PHOTORECEPTOR CONTAINING THE CHARGE TRANSFER MATERIAL

PURPOSE: Provided are an azine-based charge transfer material which has a high compatibility with a polymer binder and is reduced in phase separation and extraction by a liquid carrier, a polymer charge transfer material, an organic photoreceptor containing the charge transfer material as a photoconductive element which has a high Vacc and a low Vdis, an electrophotographic imaging apparatus containing the photoreceptor, and its method. CONSTITUTION: The azine-based charge transfer material is represented by the formula 1, wherein X and X' are independently a linking group; Ar is an aromatic group; R1, R2 and R3 are independently H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group or a heterocyclic group; and E1 and E2 are independently a reactive ring. Preferably E1 and E2 are independently an epoxy group, a thiiranyl group, an aziridino group or an oxetanyl group. © KIPO 2006 ...

SULFONYLDIPHENYLENE-BASED CHARGE TRANSFER COMPOSITION

PURPOSE: A charge transfer composition, an organic photoconductor containing the composition, an electrophotographic image formation device containing the organic photoconductor and an electrophotographic image method using the organic photoconductor are provided, to improve the quality of image and to allow the high quality of image to be maintained even after repeated cycle. CONSTITUTION: The organic photoconductor comprises a charge transfer composition containing the compound represented by the formula 1; a charge generation compound; and a conductive supporter where the charge transfer composition and the charge generation compound are coated, wherein n is 1-1,000; R1, R2, R3 and R4 are independently H, a linear or branched alkyl group, a linear or branched unsaturated hydrocarbon group, an ether group, a cycloalkyl group or an aryl group; X is a divalent carbazole group or a divalent biscarbazole group; Y is a divalent sulfonyl diphenylene group; Z is C(R4)-X-C(R3)=O double-bonded ...

ELECTROPHOTOGRAPHIC PHOTORECEPTOR FOR WET-TYPE DEVELOPMENT

PURPOSE: Provided is an electrophotographic photoreceptor for wet-type development, which has excellent durability in the presence of a liquid developing agent used for wet-type development and gives excellent image characteristics. CONSTITUTION: The electrophotographic photoreceptor for wet-type development comprises a conductive support and an organic photosensitive layer formed on the support, wherein the surface layer of the organic photosensitive layer comprises a binder resin formed of a high molecular weight compound and a charge transport material formed of a low molecular weight compound, and the gas permeability coefficient of the surface layer is 5×10^-13cm^3(STP)·m/s·m^2·mHg. © KIPO 2004 ...

CHARGE TRANSFER COMPOUND HAVING HYDROZONE GROUP, ORGANIC PHOTORECEPTOR CONTAINING THE COMPOUND, ELECTROPHOTOGRAPHIC IMAGING APPARATUS CONTAINING THE PHOTORECEPTOR AND ELECTROPHOTOGRAPHIC IMAGING METHOD USING THE APPARATUS

PURPOSE: A charge transfer compound having a hydrazone group, an organic photoreceptor containing the compound, an electrophotographic imaging apparatus containing the photoreceptor and an electrophotographic imaging method using the apparatus are provided, to obtain a high Vacc and a low Vdis. CONSTITUTION: The charge transfer compound is represented by the formula 1, wherein R1 is a carbazole group, a julolidine group or a p-(N,N-disubstituted)arylamine group; R2, R3, R4, R5 and R6 are independently an alkyl or aryl group; R7 and R8 are independently H or an alkyl or aryl group; X is O, S or NR' (wherein R' is H or an alkyl or aryl group); and Y is an aryl group. The organic photoreceptor comprises at least one photoconductive element containing the charge transfer compound, a charge generation compound and optionally a binder, placed on a conductive supporter. © KIPO 2004 ...

Electrophotographic organophotoreceptors with novel charge transport materials

An organophotoreceptor that includes: (a) a charge transport material having the formula wherein A is selected from heterocyclic groups, naphthyl group, (9H-fluoren-9-ylidene)benzyl group, alkylsulfonylphenyl, or stilbenyl, B is selected from hydrogen, alkyl group, and an aryl group, with the proviso that when A is naphthyl, B is naphthyl; or where R1 is selected from the group consisting of N-pyrrolyl, N-pyrazolyl, N-tetrazolyl, N-indolyl, N-carbazolyl, N-triazolyl, N-imidazolyl, N-benzimidazolyl, N-indazolyl, and N-benzotriazolyl group, and R3 is a 9-fluorenone group. (b) a charge generating compound; and (c) an electrically conductive substrate ...

Electrophotographic photoreceptor, image forming method and image forming apparatus utilizing the same

An electrophotographic photoreceptor including a charge generating layer and a charge transfer layer accumulated on a support member, the charge transfer layer including at least two layers of a support side layer and a surface side layer, wherein the support side layer contains A mol/cm3 of charge mol/cm3 of charge transfer material having a dipolar moment of not more than 0.75 and inorganic particles having a number average primary particle diameter of 3-150 nm, wherein A and B satisfies relations of (1) and (2), 9.0×10−4>A>3.0×10−4 (1) 8.0×10−4>B>2.0×10−5 (2) ...

Electrophotographic photosensitive member

An electrophotographic photosensitive member is characterized by having a layer containing at least one hydrazone compound represented by the following formula [I] or [II]: см. иллюстрацию в PDF-документе wherein R11 and R12 represent hydrogen, halogen, substituted or unsubstituted alkyl, alkoxy, substituted or unsubstituted aryloxy, or substituted amino, provided that at least one of R11 and R12 is substituted amino or alkoxy; R13 and R14 represent substituted or unsubstituted alkyl or substituted or unsubstituted aryl, provided that at least one of R13 and R14 is substituted or unsubstituted aryl, or R13 and R14, together with the nitrogen atom which links them, represent a nitrogen-containing heterocyclic ring; R15, R16, R17, and R18 represent hydrogen, halogen, substituted or unsubstituted alkyl, alkoxy, substituted or unsubstituted aryloxy, or substituted amino; m and n represent 0 or 1; R21 and R22 represent substituted or unsubstituted alkyl, or substituted or unsubstituted aryl, ...

Azine-based charge transport materials having two reactive rings

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 and X' are, each independently, a linking group; Ar comprises an aromatic group; R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and E1 and E2 are, each independently, a reactive ring group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses, imaging methods, and a polymeric charge transport material prepared from the charge transport material above are described.

Method of producing electrophotographic photosensitive member

The invention has a process of preparing a dispersion liquid by dispersing particles containing a charge transporting substance and a binder resin in liquid medium containing a specific liquid to prepare a dispersion liquid and a process of forming a coat of the dispersion liquid, and heating and drying the coat to dissolve the particles containing the charge transporting substance and the binder resin with liquid medium to form a charge transporting layer.

Organophotoreceptor with charge transport material having a hydrazone group linked to an epoxy group and a heterocyclic ring

The present invention provides organophotoreceptors comprising 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) ...

Electrophotographic organophotoreceptors

An organophotoreceptor that includes (a) a charge transport material having the formula wherein A is selected from heterocyclic groups, naphthyl group, (9H-fluoren-9-ylidene)benzyl group, alkylsulfonylphenyl, or stilbenyl, B is selected from hydrogen, alkyl group, and an aryl group, with the proviso that when A is naphthyl, B is naphthyl; and wherein R1 is selected from the group consisting of N-pyrrolyl, N-pyrazolyl, N-tetrazolyl, N-indolyl, N-carbazolyl, N-triazolyl, N-imidazolyl, N-benzimidazolyl, N-indazolyl, and N-benzotriazolyl group, and R3 is a 9-fluorenone group, (b) a charge generating compound, and (c) an electrically conductive substrate. Therefore, an organophotoreceptor having good mechanical and electrostatic properties can be obtained by using a charge transport material including 9H-fluoren-9-one hydrazino substituted compounds and derivatives thereof. Also, an electrophotographic imaging apparatus for obtaining high quality image even after repeated cycles can be attained ...

Electrophotographic photoconductor for use with liquid toners

ELECTROPHOTOGRAPHIC RECEPTOR

PURPOSE: To obtain a compd. suitable for charge transfer for use in a laminate photosensitive layer consisting of a charge generating layer contg. a novel hydrazone type organic photoconductor and a charge transfer layer. CONSTITUTION: An electrophotographic receptor characterized by having a layer contg. at least one of compd. expressed by formulaI, wherein A denotes on optionally substd. heterocyclic group; Z1 denotes an atomic group required for completing an optionally substd. heterocycle; R1 and R2 denotes a hydrogen atom, an optionally substd. alkyl group, an optionally substd. aralkyl group or an optionally substd. aryl group; n denotes 0, 1 or 2; and m denotes 0 or 1. A denotes a heterocyclic group, preferably represented by the general formulae IIWV. R3 and R4 denotes an optionally substd. alkyl group; R5 denotes an optionally substd. alkyl group; R6 denotes an aryl group which may be substd.; Z2 denotes an atomic group necessary to complete 5 or 6 membered heterocycle such as ...

画像形成装置、及び、プロセスカートリッジ

ELECTROPHOTOGRAPHIC SENSITIVE BODY

PURPOSE: To obtain a laminate type electrophotographic sensitive body having very high sensitivity by using a specified polycyclic quinone pigment as a charge generating material in a charge generating layer and a specified hydrazone compound in a charge transferring layer. CONSTITUTION: A charge generating layer is made of a layer contg. a polycyclic quinone pigment represented by formula I and a charge transferring layer is made of a layer contg. a hydrazone compound represented by formula II. The charge generating layer contains the charge generating material to the utmost limit so as to obtain satisfactory absorbance, and the layer is preferably formed as a thin film of 0.01W1μm thickness so as to efficiently implant generated charge carriers into the charge transferring layer. The charge generating layer can be formed by mixing the pigment represented by the formula I with a proper binder, adding a charge transferring material as required and coating the mixture on a substrate. Since ...

ELECTROPHOTOGRAPHIC SENSITIVE BODY

PURPOSE: To improve resistance to repetitive printing of an electrophotographic sensitive body by using a specified butadienic compd. and a specified hydrazone compd. in combination as charge transfer material. CONSTITUTION: A butadienic compd. expressed by the formula I and a hydrazone ocmpd. expressed by the formula II are incorporated into a charge transfer layer. In the formula I, each R1 and R2 is a (substituted)aryl group; each R3 and R4 is an aryl group substituted by a dialkylamino group. In the formula II, R5 is an alkyl group bonded to an ortho or meta position of a benzene ring; R6 is a dialkylamino group bonded to a para position of a benzene ring; each R7 and R8 is a (substituted) aryl group. Thus, an electrophotographic sensitive body having improved resistance to repetitive printing and prolonged life is obtd. COPYRIGHT: (C)1990,JPO&Japio ...

ELECTROPHOTOGRAPHIC RECEPTOR

PURPOSE: To stabilize the characteristics of a receptor even if the receptor is used repeatedly and to maintain the high sensitivity by combining a charge generating layer contg. a specified disazo pigment with a charge transferring layer contg. a specified hydrazone compound. CONSTITUTION: A photosensitive layer 44 composed of a charge generating layer 22 and a charge transferring layer 33 is formed on an electrically conductive support 11. The layer 22 is made of layer contg. a disazo pigment represented by formula 1, and the layer 33 is made of layer contg. a hydrazone compound represented by general formula 2 (where Ar is a naphthalene ring, an anthracene ring, a styryl group or a substitution product thereof, and R is an alkyl group or a benzyl group). The layer 33 is formed by coating the layer 22 with a soln. prepared by dissolving the hydrazone compound and a binder resin in a solvent such as THF. The percentage of the disazo pigment in the layer 22 is 10W 100wt%, and that of the ...

PHOTOSENSITIVE BODY

PURPOSE: To obtain a photosensitive body having high sensitivity and maintaining superior stability and low residual potential even after repeated use by incorporating a specified hydrazone compound into a photosensitive layer together with photoconductive phthalocyanine powder. CONSTITUTION: The photosensitive body having high sensitivity and superior durability, undergoing little change in the surface potential, and accumulating hardly residual potential is obtd. by forming a single photosensitive layer contg. a hydrazone compound represented by the formula [where each of X and Y is H, lower alkyl, OCH3 or OC2H5, Z is lower alkyl, benzyl, lower alkoxy, phenoxy or benzyloxy, Z' is H, alkyl or alkoxy, R is lower alkyl, (substituted) aryl or benzyl, and the substituent is relatively lower alkoxy or the like] and photoconductive phthalocyanine particles dispersed in a binder. A laminate type photosensitive layer consisting of a charge generating layer contg. photoconductive phthalocyanine ...

ELECTROPHOTOGRAPHIC RECEPTOR

PURPOSE: To enhance initial acceptance potential and to reduce dark decay, by adding an organic photoconductor made of hydrazone compds. CONSTITUTION: An electrophotographic receptor has a layer contg. a hydrazone compd. represented by formulaIin which Ar is an optionally substd. or unsubstituted polycyclic aromatic hydrocarbon or formula II; Z is an atomic group necessary to complete a piperdino or morpholino group; R3 and R4 are H, halogen, or monovalent org. residue; R1 is optionally substd. naphthyl; R4 is optionally substd. alkyl or aralkyl or aryl; and n is 0 or 1. COPYRIGHT: (C)1983,JPO&Japio ...

Polyhydrazonbasierende Ladungstransportverbindungen

DRUCKPLATTE FUER ELEKTROPHOTOGRAPHISCHES VERFAHREN

Bilderzeugungsgerät

Elektrophotographisches Aufzeichnungsmaterial

Elektrophotoempfindliches Material.

Hydrazon-Verbindungen und photosensitives Material, das diese Verbindungen verwendet.

ELECTROPHOTOGRAPHIC RECORDING MATERIAL

Napthyl substituted hydrazones and their use in electrophotographic photosensitive members

An electrophotographic photosensitive member is characterized by having a layer which contains at least one hydrazone compound represented by the following formula (1) or (2): Formula (1) Formula (2) wherein R11 represents substituted or unsubstituted naphthyl; R12 represents substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl; R13 represents hydrogen, alkyl, or alkoxy; R14 and R15 each represent substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl; n is 0 or 1; when n=1, R14 and R15, together with the nitrogen which links them, may complete a cyclic amino group; X represents a group necessary for completing a benzene ring or naphthalene ring; R21 and R22 each represent hydrogen, halogen, alkyl, alkoxy or disalkylamino; and R23, R24, R25, R26 and R27 each represent substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl ...

ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND, INCLUDING THE ELECTROPHOTOGRAPHIC PHOTORECEPTOR, DRUM CARTRIDGE AND IMAGE FORMING APPARATUS

Dual layer photoconductors with charge generation layer containing hindered hydroxylated aromatic compound

IMAGING MEMBERS COMPRISING CAPPED STRUCTURED ORGANIC FILM COMPOSITIONS

An imaging member outer layer comprising a structured organic film comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film further includes fluorinated segments and capping units comprising hole transport materials.

ELECTROPHOTOGRAPHIC PLATE

Organophotoreceptor with an epoxy-modified charge transport compound having an azine group

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

CHARGE TRANSPORT COMPOUND, ELECTROPHOTOGRAPHIC ORGANIC LIGHT ACCEPTOR INCLUDING THE SAME, APPARATUS AND METHOD FOR FORMING ELECTROPHOTOGRAPHIC IMAGE

PURPOSE: A charge transport compound, an electrophotographic organic light acceptor including the compound, an apparatus and a method for forming an electrophotographic image are provided to obtain a video image having high quality even after repeated cycles by employing an organic light acceptor using a charge transport compound. CONSTITUTION: An apparatus for forming an electrophotographic image includes a plurality of support rollers, and an organic light acceptor in the form of a flexible belt surrounding the support rollers. The organic light acceptor includes a charge transport compound, a charge generation compound and a conductive substrate. The charge transport compound has hydrazone bridge hetero ring group. © KIPO 2002 ...

ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMING APPARATUS INCLUDING THE SAME

An electrophotographic photoreceptor of high durability capable of providing stable excellent electrical characteristics over a prolonged period of time, which electrophotographic photoreceptor excels in mechanical strength. Photosensitive layer (14) of electrophotographic photoreceptor (1) comprises a polyarylate resin having structural units, for example, those of aforementioned formula (1-3) and an enamine compound represented by, for example, aforementioned formula (2-1). By virtue of these, electrophotographic photoreceptor (1) of excellent mechanical strength and favorable electrical characteristics can be realized. © KIPO & WIPO 2007 ...

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, IMAGE FORMING DEVICE USING SAME, AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER CARTRIDGE

Disclosed is an electrophotographic photosensitive member having excellent wear resistance, wherein the photosensitive layer of the photosensitive member contains a polyester resin having a repeating unit represented by the formula (1) below and a hydrazone compound. (1) (In the formula (1), Ar1-Ar4 independently represent an optionally substituted arylene group; X1 represents a divalent group (including a single bond); and X2 represents a divalent group having an atomic number of 3 or less (including a single bond).) ...

Electrophotographic photosensitive member

An improved electrophotographic photosensitive member is composed of a layer containing a hydrazone compound represented by the formula см. иллюстрацию в PDF-документе wherein R2 and R3 are each unsubstituted alkyl or substituted alkyl, unsubstituted aralkyl or substituted aralkyl, or unsubstituted aryl or substituted aryl, with the proviso that R2 and R3 are not simultaneously alkyls, n is 1 or 2, when n is 1, A represents см. иллюстрацию в PDF-документе wherein R1 is C1 -C5 alkyl, unsubstituted aralkyl, or substituted aralkyl, and when n is 2, A represents a direct single bond between two см. иллюстрацию в PDF-документе radicals.

Image forming method

An image forming process is carried out through the steps of electrostatically charging a cylindrical electrophotographic photosensitive member, forming an electrostatic latent image by image exposure, developing the latent image and transferring the developed image to a transfer member. The photosensitive member is comprised of a conductive support and a photosensitive layer which contains oxytitanium phthalocyanine as a charge-generating material and a charge-transporting material. The charge-generating material and the charge-transporting material have a work function (WFCG) and a work function (WFCT), respectively. Those work functions satisfies the following relationship: -0.2 Подробнее

Control of Crazing, Cracking or Crystallization of a Charge Transport Layer In a Photoconductor

A charge transport composition is provided including a cyclo-aliphatic ether compound. One purpose of the cyclo-aliphatic ether compound is to improve the resistance to crazing, crystallization and etching of the charge transport layer. The charge transport composition may be coated along with a charge generation composition onto a conductive substrate to form a photoconductor. The charge transport composition may therefore be employed in a photoconductor located in a printer or a printer cartridge.

Organophotoreceptor with charge transport material with fluorenone azine groups

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, a heterocyclic group, or an aryl group; R3 and R4 are, independently, H, halogen, carboxyl, hydroxyl, thiol, cyano, nitro, aldehyde group, ketone group, an ether group, an ester group, a carbonyl group, 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 can be optionally replaced by O, S, C═O, O═S═O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR5 group, a CHR6 group, or a CR7R8 group where R5, R6, R7, and R8 are, independently, H, an alkyl group, ...

Bridged charge transport materials having a central sulfur atom linkage

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 Z1 and Z2 comprise, each independently, a bond, a vinyl group, a —CR1═N—NR2— group, or a —CR3═N—N═CR4— group; Y1 and Y2 comprise, each independently, an aromatic group; X1 and X2 are, each independently, a linking group; W1 and W2 are, each independently, a —(CH2)n— group or a —(CH2)n-1—C(═O)— group, where n is an integer between 1 and 10, inclusive; Q1 and Q2 are, each independently, O, S, or NR; and R1, R2, R3, R4, R, R′, and R″ comprise, each 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.

Electrophotographic imaging member having two charge transport layers for limiting toner consumption

An electrophotographic imaging member including a supporting substrate, an optional charge blocking layer, an optional adhesive layer, a charge generating layer, and a charge transporting element including two sequentially deposited charge transport layers each including a hole transport material and an optional film forming binder. A first charge transport layer exhibits a first charge carrier transit time and second charge transport layer exhibits a second charge carrier transit time. The two charge transport layers are formed in one of two ways. First, each layer can be formed from a different charge transport material so that the charge mobility of the charge transport material of the first charge transport layer is about 4 to about 20 times lower than the charge mobility of the charge transport material of the second charge transport layer. Or, alternatively, each charge transport layer can be made using a different amount of the same charge transport material. In this case, the first ...

Sulfonyldiphenylene based charge transport compositions

This invention relates to a novel electrophotographic imaging process that includes: (a) applying an electrical charge to a surface of an organophotoreceptor comprising: (i) a charge transport composition comprising molecules having the formula where the average n is between 1 and 1000; R₁ and R₂ are, independently, hydrogen, alkyl, unsaturated hydrocarbon, ether, cycloalkyl, or aryl; X is a bis(fluorene-4-carboxyl)alkane group; Y is a sulfonyldiphenylene; Z is X-O or two hydrogens; and Q is O or N-N(R₁)-Y-N(R₂)-NH₂; (ii) a charge generating compound; and (iii) an electrically conductive substrate over which said charge transport composition and said charge generating compound are located; (b) imagewise exposing said surface of said organophotoreceptor to radiation to dissipate charge in selected areas and thereby form a pattern of charged and uncharged areas on said surface; (c) contacting said surface with a toner to create a toned ...

Hydrazone-based charge transport materials

The present invention provides organophotoreceptors comprising 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, R6, R7, and R8, are, each independently, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; R9 and R10 are, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; Ar1 and Ar2 are, each independently, an aromatic group; Y is an arylamine group; and X1 and X2 are, each independently, a linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods (processes) are described, as are charge transport materials.

Electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the photoreceptor

ELECTROPHOTOGRAPHIC SENSITIVE BODY

PURPOSE: To obtain an electrophotographic sensitive body high in sensitivity and kept in extremely low in residual potential even in long period repeated uses by incorporating a specified polycyclic quinone type pigment in an electrostatic charge generating layer and a specified hydrazone type compd. in a charge transfer layer. CONSTITUTION: The charge generating layer is formed by coating a conductive substrate with a coating soln. prepared by dispersing one of the polycyclic quinone type pigments represented by formula I into the org. solvent soln, of a binder resin, and drying it, or by vapor depositing this pigment in a vacuum system. The electrophotographic sensitive body high in sensitivity and superior in durability, etc., can be obtained by coating the charge generating layer with the coating soln, contg. the hydrazone compd. together with the binder resin dissolved in the org. solvent, and drying it to form the charge transfer layer on the charge generating layer. This hydrazone ...

ELECTROPHOTOGRAPHIC RECEPTOR

PURPOSE: To obtain a highly sensitive receptor having flat sensitivity all over the visible region by forming a charge generating layer contg. a specified disazo pigment and a charge transferring layer contg. a specified hydrazone compound on an electrically conductive support. CONSTITUTION: A prescribed amount of a disazo pigment represented by formula Iis dissolved in THF, and a prescribed amount of hydrazone represented by formula II (where R is H, 1W3C alkyl, alkoxy, dialkylamino, halogen, nitro or OH, and n is an integer of 1W5) is dissolved in THF separately from the pigment. The former soln. contg. the pigment of formulaIis applied to an electrically conductive support 11 of Al or the like to form a charge generating layer 22 having 0.01W5μm thickness, and the latter soln. contg. the hydrazone of formula II is applied to the layer 22 to form a charge transferring layer 33 having 2W100μm thickness. Thus, an electrophotographic receptor is obtd. COPYRIGHT: (C)1982,JPO&Japio ...

ELECTROPHOTOGRAPHIC RECEPTOR

PURPOSE: To obtain an electrophotographic receptor high in sensitivity and rich in flexibility, by adding a charge generating substance, and a charge transfer substance made of a specified hydrazone compound to form a photosensitive layer. CONSTITUTION: A hydrazone compound represented by the formula in which R1 is optionally substituted alkyl, R2 is H, halogen, nitro, hydroxy, or alkyl, alkoxy, amino each optionally substituted, and n is 1W3 is used as a charge transfer substance. A charge generating substance, such as an Se-Te alloy or "CI Pigment Blue 25 (CI-21180)" 3 is dispersed into a charge transfer medium 4 composed of said hydrazone compound and a binder resin to form a photosensitive layer 2 having 3W 50μ thickness on a conductive substrate, thus a desired electrophotographic receptor being obtained. COPYRIGHT: (C)1982,JPO&Japio ...

ELECTROPHOTOGRAPHIC SENSITIVE BODY

PURPOSE: To enhance sensitivity and durability by incorporating a specified hydrazone derivative in a photosensitive layer. CONSTITUTION: The photosensitive layer 4 is formed by laminating on a conductive substrate 1 an interlayer 5 when needed, a carrier generating layer 2 containing a carrier generating material (A) and a carrier transfer layer 3 containing as a carrier transfer material one of the hydrazone derivatives represented by formula I in which R1 is H, alkyl, or aryl, and each of R2 and R3 is alkyl or aryl, and said compound (A) can be embodied by formula II and the like. The layers 2, 3 can both be formed by coating or the like. COPYRIGHT: (C)1989,JPO&Japio ...

PRODUCTION OF PARTICLE OF 1-PYRENECARBALDEHYDEDIPHENYLHYDRAZONE

PURPOSE: To obtain the title readily handleable granules by making 1- pyrenecarbaldehydediphenylhydrazone useful as an electronic material, extremely useful as a sensitized material for copying machine, into a solution in methyl ethyl ketone, adding water to that solution and stirring. CONSTITUTION: A solution of 1-pyrenecarbaldehydediphenylhydrazone (PCP) as a solute in methyl ethyl ketone is incorporated with water and stirred to produce granules of 1-pyrenecarbaldehydediphenylhydrazone. In this method, solubility of PCP in methyl ethyl ketone increases and granulating rate also becomes high with rise in temperature and the temperature is preferably about room temperature. Feed rate of the PCP solution to water is preferably higher. When the said solution in methyl ethyl ketone contains various binder polymers besides the PCP, preferably the prepared particles of PCP are harder and slightly ground. COPYRIGHT: (C)1989,JPO&Japio ...

Process for the synthesis of an N,N-disubstituted hydrazone

In the process, a nitrosation is carried out by adding an aqueous solution of sodium nitrite to a solution which contains 1 part by weight of an N,N-disubstituted amine which is dissolved in 3 to 30 parts by weight of an organic acid, the nitrosated product is then reduced to an N,N-disubstituted hydrazine by addition of a reducing agent to the mixture containing the nitrosated product, and a carbonyl compound of the formula …… in which A denotes an aromatic hydrocarbon group or an aromatic heterocyclic group, which groups can contain a substituent, and B denotes a hydrogen atom, an alkyl group, an aryl group or an aromatic heterocyclic group, which groups can contain a substituent, is then added to the mixture containing the N,N-disubstituted hydrazine, as a result of which condensation of the N,N-disubstituted hydrazine with the carbonyl compound is carried out.

Elektrophotographischer organischer Photorezeptor mit Ladungstransportverbindungen

ELECTROPHOTOGRAPHIC RECORDING MATERIAL AND ITS APPLICATION IN A COPYING PROCESS

Verbrückte Ladungstransportmaterialien mit zentraler Schwefelatombindung

Photoleitfähiges Element, das Polycarbonate enthält, die durch Aryltricarbonsäuren oder deren Säurechloride verzweigt sind

Organischer Photorezeptor mit einem polymeren Hydrazon- Ladungstransportmaterial

LICHTEMPFINDLICHES ELEMENT FUER ELEKTROFOTOGRAFISCHE ZWECKE

Elektrophotographisches lichtempfindliches Element

Heterocyclic hydrazones for use in electrophotographic photosensitive members

An electrophotographic photosensitive member comprises a layer containing a hydrazone compound represented by the following formula (1) or (2): Formula (1) Formula (2) wherein, Z is an atomic group necessary to complete a substituted or unsubstituted heterocyclic ring; R11, R12, R21, R22 and R23 represent substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl, and the combinations of R11 with R12 and of R22 with R23 can form each a pyrrolidine ring, piperidine ring, or morpholine ring; n is 1 or 2; and A is a monovalent heterocyclic compound residue.

ORGANIC PHOTOCONDUCTOR

HYDRAZONE CONTAINING CHARGE TRANSPORT ELEMENT AND PHOTOCONDUCTIVE PROCESS OF USING SAME

HYDRAZONE CONTAINING CHARGE TRANSPORT ELEMENT AND PHOTOCONDUCTIVE PROCESS OF USING SAME Abstract of the Disclosure A process for electrophotographic reproduction, and a layered electrophotographic plate having a conven-tional charge generation layer and a p-type hydrazone con-taining charge transport layer, in which the surface of the charge transport layer is selectively discharged by actinic radiation as a result of the migration through the transport layer of charges generated in the charge generation layer as a result of the actinic radiation and injected into the transport layer, the hydrazone having the composition; n=0,1 R1 = -O(CH2)yCH3 y=0, 1 X=0,1,2,3 R3 =-H R4 =-H R2 = -OCH2CH3 R5 =-H -H R6 = R7 = R6 & R7 =

ELECTROPHOTOGRAPHIC LIGHT-SENSITIVE MATERIAL

... 27571-25 The invention relates to an electrophotographic lightsensitive material having a layer of a charge transporting substance and a layer of a charge producing substance on an electrically conductive support, wherein said charge transporting substance is an arylaldehydehydrazone derivative of the general formula: where R1, R2 and R3 are each an alkyl or aryl group. The invention provides an electrophotographic light-sensitive material of the composite or laminated type including a layer of a charge transporting substance which is highly compatible with a bonding agent, has an appropriately low oxidation potential, is stable and has a high charge transfer rate, and having a high degree of sensitivity.

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MATERIAL AND METHOD OF PREPARING SAME

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MATERIAL AND METHOD OF PREPARING SAME An electrophotographic photosensitive material suitable for application to a lazer beam printer is disclosed which includes an electrically conductive support having provided thereon a charge generating layer containing an X-form, metal-free phthalocyanine and a charge transporting layer containing a specific butadiene compound, hydrazone compound or pyrazoline compound. The charge transporting layer may be prepared by coating with a solution containing the specific compound, a polycarbonate resin and a dioxane-containing solvent.

ELECTROPHOTOGRAPHIC ELEMENT CONTAINING A HYDRAZONE PHOTO CONDUCTOR IN THE CHARGE TRANSPORT LAYER

ELECTROPHOTOGRAPHIC PHOTOSENSITIVE ELEMENT

An electrophotographic photosensitive element comprising an electrically conductive substrate having formed, first, a charge transfer layer, second, a charge generating layer, and, third, a surface protective layer. The charge transfer layer contains a butadiene derivative and/or a hydrazone compound. The charge generating layer contains a hydrazone compound as a charge transfer material in addition to a charge generating material. The charge generating layer is formed by coating the charge transfer layer with an alcoholic solvent in which is dissolved the coating composition of the charge generating layer. The surface protective layer is formed on the surface of the charge generating layer.

Electrophotographic photoreceptor containing naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the same

湿显影电子照相感光器

... 本发明涉及一种湿显影电子照相感光器，包括一个导电基底和一个在导电基底上形成的有机感光层，其中所述有机感光层的表面层包括至少一种含有聚合物的粘合剂树脂和一种含有低分子化合物的电荷迁移材料，所述表面层的氧气透过系数为5×10#+[-13]cm#+[3]/(STP)＊cm/s＊cm#+[2]＊cmHg或更低。该电子照相感光器用于湿显影方法，对于液体显影剂具有较高稳定性并且可以产生优良的成像性能。 ...

Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

The invention relates to an electrophotographic photosensitive member, a process cartridge and an electrophotographic apparatus. The charge transporting layer as the surface layer of an electrophotographic photosensitive member includes a charge transporting substances represented by any one of formulae (1) to (5), a specific compound, and a specific resin (binder resin). The specific compound is hexanol, heptanol, cyclohexanol, benzyl alcohol, ethylene glycol, 1,4-butanediol, 1,5-pentanediol, diethylene glycol, diethylene glycol ethyl methyl ether, ethylene carbonate, propylene carbonate, nitrobenzene, pyrrolidone, N-methylpyrrolidone, methyl benzoate, ethyl benzoate, benzyl acetate, ethyl 3-ethoxypropionate, acetophenone, methyl salicylate, dimethyl phthalate, or sulfolane.

Organosilicon-modified charge transporting compound and curable composition containing compound and having charge transporting ability

ORGANOPHOTORECEPTOR COMPRISING CONDUCTIVE SUBSTRATE AND PHOTOCONDUCTIVE ELEMENT COMPRISING CHARGE TRANSFER MATERIAL HAVING BIS(9-FLUORENONE)AZINE GROUP AND CHARGE GENERATION MATERIAL, ELECTROPHOTOGRAPHIC IMAGE FORMATION DEVICE, ITS FORMATION METHOD, AND NOVEL CHARGE TRANSFER MATERIAL THEREOF

PURPOSE: Provided are an organophotoreceptor which is excellent in abrasion resistance and electron transfer property and has a high Vacc and a log Vdis, an electrophotographic image formation device containing the organophotoreceptor, its formation method, and a novel charge transfer material having a bis(9-fluorenone)azine group used in the organophotoreceptor. CONSTITUTION: The organophotoreceptor comprises a conductive substrate; and a photoconductive element on the substrate which comprises a charge transfer material represented by the formula 1 and a charge generation material, wherein n is an integer of 2-6; R1 and R2 are independently H, a halogen atom, a carboxyl group, a hydroxyl group, a thiol group, a cyano group, a nitro group, an aldehyde group, a ketone group, an ether group, an ester group, a carbonyl group, an alkyl group, an alkaryl group or an aryl group; X is a branched or linear linking group of -(CH2)m- (wherein m is an integer of 0-20; at least one of the methylene ...

Hydrazone-based charge transport material having an unsaturated acyl group, organophotoreceptor containing the same and electrophotographic imaging process using the same

ELECTROPHOTOGRAPHIC PHOTORECEPTOR

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.

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

Electrophotographic organophotoreceptors with novel charge transport compounds

Azine-based dimeric charge transport materials

Electrophotographic light-sensitive printing materials

An electrophotographic light-sensitive printing material having a high sensitivity and forming a good printing plate capable of providing clear copies having less stains at non-image areas is disclosed. The material is comprised of a conductive support having formed thereon an electrophotographic light-sensitive layer containing (a) a hydrazone compound, (b) a barbituric acid derivative, a thiobarbituric acid derivative or other charge generating material, and (c) a resin binder.

Hydrazone-based charge transport compounds

Improved organophotoreceptor include: (a) a charge transport compound having the formula where R1has a structure of: in which Ar is selected form the group consisting of; R4is a hydrogen or an aromatic group and R2and R3are, independently, an (N,N-disubstituted) arylamine group; (b) a charge generating compound; and (c) an electrically conductive substrate. Additional improved charge transport compounds have the formula where R1has a structure of and R2is a julolidene group or a carbazole group.

ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMATION DEVICE

An electrophotographic photoreceptor comprising at least a photosensitive layer on a conductive substrate, wherein the photosensitive layer is a laminate having a charge transport layer and a charge generation layer, the charge transport layer contains four or more types of compounds each having a maximum absorption wavelength falling within a wavelength range of from 300 nm to 600 nm in a tetrahydrofuran solution at 25° C., and maximum absorption wavelengths falling within the wavelength range of at least four types of the compounds of said four or more types of the compounds are separated from each other by 10 nm or more. 1. An electrophotographic photoreceptor comprising at least a photosensitive layer on a conductive substrate , wherein:the photosensitive layer is a laminate having a charge transport layer and a charge generation layer,the charge transport layer contains four or more types of compounds each having a maximum absorption wavelength falling within a wavelength range of from 300 nm to 600 nm in a 0.001 mass % tetrahydrofuran solution at 25° C., andmaximum absorption wavelengths falling within the wavelength range of at least four types of the compounds of said four or more types of the compounds are separated from each other by 10 nm or more.2. The electrophotographic photoreceptor according to claim 1 , wherein the wavelength range is from 300 nm to 500 nm.3. The electrophotographic photoreceptor according to claim 1 , wherein the maximum absorption wavelengths falling within said wavelength range of at least four types of the compounds of said four or more types of the compounds are separated from each other by 20 nm or more.4. The electrophotographic photoreceptor according to claim 1 , wherein said four or more types of the compounds contain at least a compound of which the maximum absorption wavelength falls within a wavelength range of from 300 to 350 nm and a compound of which the maximum absorption wavelength falls within a wavelength range ...

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 a charge generating material, a hole transport material, an electron transport material, and a binder resin. The binder resin contains a polyarylate resin. The polyatylate resin is represented by general formula (1). The hole transport material contains a compound represented by general formula (HTM1), (HTM2), (HTM3), (HTM4), (HTM5), (HTM6), or (HTM7). The photosensitive layer has a scratch resistance depth of no greater than 0.50 μm. The photosensitive layer has a Vickers hardness of at least 17.0 HV. 2. The electrophotographic photosensitive member according to claim 1 , whereinin the general formula (1),X and Y each represent the divalent group represented by the chemical formula (1-1 ), (1-3), (1-4), (1-5), (1-6), or (1-7),X is different from Y, andkr and kt each represent 3.3. The electrophotographic photosensitive member according to claim 1 , whereinin the general formula (1), s/(s+u) is at least 0.30.4. The electrophotographic photosensitive member according to claim 1 , wherein{'sup': 1', '2', '3', '4', '5', '6', '7', '8, 'in the general formula (HTM1), R, R, R, R, R, R, Rand Reach represent, independently of one another, a hydrogen atom or an alkyl group having 1 to 3 carbon atoms,'}{'sup': 9', '10', '11', '12, 'in the general formula (HTM2), R, R, R, and Reach represent, independently of one another, a hydrogen atom or an alkyl group having 1 to 3 carbon atoms,'}{'sup': 13', '14', '15', '16', '17', '18', '19', '20, 'in the general formula (HTM3), R, R, R, R, R, R, R, and Reach represent, independently of one another, a hydrogen atom or an alkyl group having 1 to 3 carbon atoms,'}{'sup': 21', '22', '23', '24', '25', '26', '27', '28, 'in the general formula (HTM4), R, R, R, R, R, R, R, and Reach represent, independently of one another, a hydrogen atom or an ...

COMPOUND MIXTURE, ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND PRODUCTION METHOD FOR COMPOUND MIXTURE

A compound mixture contains a mixture of a compound represented by general formula (1) and a compound represented by general formula (2). In the general formula (1), R, R, R, R, R, R, R, R, R, and Reach represent, independently of one another, a hydrogen atom, an alkyl group having a carbon number of at least 1 and no greater than 8, an alkoxy group having a carbon number of at least 1 and no greater than 8, or an aryl group having a carbon number of at least 6 and no greater than 14. Y represents a bivalent group represented by chemical formula (Y1), chemical formula (Y2), or general formula (Y3): 2. The compound mixture according to claim 1 , whereinY in the general formula (1) represents a bivalent group represented by the chemical formula (Y2).3. The compound mixture according to claim 1 , wherein{'sup': 1A', '2A', '3A', '4A', '5A', '6A', '7A', '8A', '9A', '1A', '1A', '2A', '3A', '4A', '5A', '6A', '7A', '8A', '9A', '10A, 'at least two of R, R, R, R, R, R, R, R, R, and Rin the general formula (1) represent a group different from a hydrogen atom, and any other than the at least two of R, R, R, R, R, R, R, R, R, and Rrepresent a hydrogen atom, and'}a sum of the carbon numbers of groups different from a hydrogen atom is at least 3.4. The compound mixture according to claim 1 , wherein{'sup': '3A', 'Rin the general formula (1) represents an alkoxy group having a carbon number of at least 1 and no greater than 8.'}8. The compound mixture according to claim 1 , whereina content ratio of the compound represented by the general formula (2) with respect to a total mass of the compound represented by the general formula (1) and the compound represented by the general formula (2) is at least 1.0% by mass and no greater than 10.0% by mass.9. An electrophotographic photosensitive member comprising:a conductive substrate; anda photosensitive layer, whereinthe photosensitive layer contains at least a charge generating material, a hole transport material, and a binder resin, and ...

Method of producing electrophotographic photosensitive member

The invention has a process of preparing a dispersion liquid by dispersing particles containing a charge transporting substance and a binder resin in liquid medium containing a specific liquid to prepare a dispersion liquid and a process of forming a coat of the dispersion liquid, and heating and drying the coat to dissolve the particles containing the charge transporting substance and the binder resin with liquid medium to form a charge transporting layer.

ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

An electrophotographic photoreceptor includes a conductive substrate; a charge generating layer provided on the conductive substrate; a charge transporting layer provided on the charge generating layer, which is configured to include a charge transporting material and a polycarbonate; and an outermost surface layer provided on the charge transporting layer, which is constituted with a cured film formed of a composition including a chain polymerizable compound having at least a charge transporting skeleton and a chain polymerizable functional group in the same molecule, and has an A value represented by the following equation (1) being from 0.1 to 0.3, and a B value represented by the following equation (2) being 0.02 or less, each of which is determined by an Attenuated total reflection Fourier transform infrared spectroscopy: 1. An electrophotographic photoreceptor comprising:a conductive substrate;a charge generating layer provided on the conductive substrate;a charge transporting layer provided on the charge generating layer, which is configured to include a charge transporting material and a polycarbonate; and [{'br': None, 'i': A', 'S', '/S', 'S', '/S, '=(113)−(003)\u2003\u2003Equation (1)'}, {'br': None, 'i': B=S', '/S, '223\u2003\u2003Equation (2)'}], 'an outermost surface layer provided on the charge transporting layer, which is constituted with a cured film formed of a composition including a chain polymerizable compound having at least a charge transporting skeleton and a chain polymerizable functional group in the same molecule, and has an A value represented by the following equation (1) being from 0.1 to 0.3, and a B value represented by the following equation (2) being 0.02 or less, each of which is determined by an Attenuated total reflection Fourier transform infrared spectroscopywherein in the equations (1) and (2),{'sup': −1', '−1, 'S1 represents a peak area of a peak based on a mono-substituted benzene in the outermost surface layer (a peak in the ...

PROCESS FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER

In a process for producing an electrophotographic photosensitive member, in particular, a process of forming a charge transporting layer, a production process is provided by which the stability of a charge transporting layer coating fluid even after its storage for a long time is improved so as to form a coat for a charge transporting layer having a high uniformity. In a process for producing an electrophotographic photosensitive member having a charge transporting layer on a support, a production process is used in which a coat of (i) a liquid dispersion comprised of particles containing a charge transporting material, particles containing a binder resin, and an aqueous dispersion medium, or (ii) a liquid dispersion comprised of particles containing both a charge transporting material and a binder resin, and an aqueous dispersion medium, is formed on the support and then the coat is heated at a temperature not less than the melting point of the charge transporting material to form the charge transporting layer. 1. A process for producing an electrophotographic photosensitive member which comprises a support and a charge transporting layer formed on the support , comprising the steps of:preparing the following liquid dispersion (i) or (ii);(i) a liquid dispersion comprising particles containing a charge transporting material, particles containing a binder resin, and an aqueous dispersion medium; or(ii) a liquid dispersion comprising particles containing both a charge transporting material and a binder resin, and an aqueous dispersion medium;forming a coat of the liquid dispersion (i) or (ii) on the support; andheating the coat at a temperature not less than the melting point of the charge transporting material to form the charge transporting layer;the binder resin being soluble in a molten product of the charge transporting material at the temperature at which the coat is heated.29-. (canceled)10. The process for producing the electrophotographic photosensitive ...

Imaging members comprising capped structured organic film compositions

An imaging member outer layer comprising a structured organic film comprising a plurality of segments and a plurality of linkers arranged as a covalent organic framework, wherein the structured organic film further includes fluorinated segments and capping units comprising hole transport materials.

ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR PRODUCING THE SAME, AND ELECTROPHOTOGRAPHIC APPARATUS USING THE SAME

An electrophotographic photoreceptor which, even when mounted on a high-image-quality monochrome high-speed printer or tandem color printer including a cleaner-less process of a non-magnetic single-component contact development system using a polymerized toner, inhibits the generation of fine black spots or color spots and suppresses the occurrence of toner filming during the initial printing under a high-temperature and high-humidity environment and thereby stably attains a high image quality in a variety of environments. The electrophotographic photoreceptor is a positively-chargeable electrophotographic photoreceptor which includes, on a conductive support, a single layer-type photosensitive layer that contains a charge generation material, a hole transport material, an electron transport material, and a binder resin. The charge generation material contains at least a titanyl phthalocyanine, and a contact angle between the surface of an outermost layer and water is in a range of 81° to 87°. 1. A positively-chargeable electrophotographic photoreceptor , comprising:a conductive support; anda single layer-type photosensitive layer containing a charge generation material, a hole transport material, an electron transport material and a binder resin arranged on the conductive support,wherein the charge generation material contains at least a titanyl phthalocyanine, and a contact angle between the surface of an outermost layer of the positively-chargeable electrophotographic photoreceptor and water ranges from 81° to 87°.2. A positively-chargeable electrophotographic photoreceptor , comprising:a conductive support;a charge transport layer that contains at least a hole transport material and a binder resin and that is arranged on the conductive support; anda charge generation layer containing at least a charge generation material, a hole transport material, an electron transport material and a binder resin arranged on the charge transport layer,wherein a contact angle ...

HYDRAZONE DERIVATIVE OF TRIPHENYLAMINE AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER

A hydrazone derivative of triphenylamine is represented by general formula (1). 2. The hydrazone derivative of triphenylamine according to claim 1 , wherein{'sub': 1', '2, 'in the general formula (1), Rand Reach represent, independently of one another, an alkyl group having a carbon number of at least 1 and no greater than 6 or an alkoxy group having a carbon number of at least 1 and no greater than 6.'}3. The hydrazone derivative of triphenylamine according to claim 2 , whereinin the general formula (1), m and n each represent, independently of one another, an integer of at least 0 and no greater than 2.4. The hydrazone derivative of triphenylamine according to claim 3 , whereinin the general formula (1), 1 represents 1.5. The hydrazone derivative of triphenylamine according to claim 4 , wherein{'sub': '1', 'in the general formula (1), Rrepresents a methyl group, m represents 2, and n represents 0.'}6. The hydrazone derivative of triphenylamine according to claim 5 , wherein{'sub': '1', 'among the two chemical groups each represented by Rin the general formula (1), one of the chemical groups is at an ortho substitution position and the other of the chemical groups is at a meta or para substitution position.'}7. The hydrazone derivative of triphenylamine according to claim 4 , wherein{'sub': '1', 'in the general formula (1), Rrepresents an ethoxy group, m represents 1, and n represents 0.'}8. The hydrazone derivative of triphenylamine according to claim 7 , wherein{'sub': '1', 'the chemical group represented by Rin the general formula (1) is at an ortho or para substitution position.'}9. The hydrazone derivative of triphenylamine according to claim 4 , wherein{'sub': '1', 'in the general formula (1), Rrepresents a phenoxy group, m represents 1, and n represents 0.'}10. The hydrazone derivative of triphenylamine according to claim 4 , wherein{'sub': '1', 'in the general formula (1), Rrepresents a phenyl group, m represents 1, and n represents 0.'}11. The hydrazone ...

ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMATION DEVICE

An electrophotographic photoreceptor comprising at least a photosensitive layer on a conductive substrate, wherein the photosensitive layer is a laminate having a charge transport layer and a charge generation layer, the charge transport layer contains four or more types of compounds each having a maximum absorption wavelength falling within a wavelength range of from 300 nm to 600 nm in a tetrahydrofuran solution at 25° C., and maximum absorption wavelengths falling within the wavelength range of at least four types of the compounds of said four or more types of the compounds are separated from each other by 10 nm or more. 2. The electrophotographic photoreceptor according to claim 1 , wherein the wavelength range is from 300 nm to 500 nm.3. The electrophotographic photoreceptor according to claim 1 , wherein the maximum absorption wavelengths falling within said wavelength range of at least four types of the compounds of said four or more types of the compounds are separated from each other by 20 nm or more.4. The electrophotographic photoreceptor according to claim 1 , wherein said four or more types of the compounds contain at least a compound of which the maximum absorption wavelength falls within a wavelength range of from 300 to 350 nm and a compound of which the maximum absorption wavelength falls within a wavelength range of from 450 to 500 nm.5. The electrophotographic photoreceptor according to claim 1 , wherein the charge transport layer contains a polyarylate resin or a polycarbonate resin.6. The electrophotographic photoreceptor according to claim 1 , wherein the charge generation layer contains a phthalocyanine.8. The electrophotographic photoreceptor according to claim 1 , wherein the content of the compound claim 1 , of which the content is the smallest of said four or more types of the compounds claim 1 , is from 0.01 to 20 parts by mass relative to 100 parts by mass of the binder resin in the charge transport layer.9. The electrophotographic ...

Electronic photographic material

Electrophotographic receptor

Electrophotographic receptor

電子写真用感光体

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基于腙的电荷传输材料

公开了一种有机光接受器，包括导电基物和在该导电基物上的光电导元件，该光电导元件包括：(a)包括具有如右式的聚合物的电荷传输材料：其中R 1 ，R 2 ，R 3 ，R 4 ，R 5 ，R 6 ，R 7 ，R 8 各自独立地为烷基、链烯基、链炔基、芳基或杂环基；R 9 和R 10 各自独立地为H、烷基、链烯基、链炔基、芳香基或杂环基；Ar 1 和Ar 2 各自独立地为芳香基；Y为芳胺基；和X 1 和X 2 各自独立地为连接基团；和(b)电荷产生化合物。相应的电子照相装置和成像方法。

電子写真感光体

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電子写真用感光体

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電子写真用感光体

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A hydrazone-based charge transport material, a method of preparing the same and a method of using the same

본 발명은 도전성 기재 및 상기 도전성 기재 상의 광도전 요소를 포함하는 유기감광체로서, 상기 광도전 요소는, The present invention provides an organophotoreceptor comprising a conductive substrate and a photoconductive element on the conductive substrate, wherein the photoconductive element is (a) 하기 화학식 1을 갖는 전하 수송 물질; 및 (a) a charge transport material having Formula 1; And (b) 전하 생성 화합물 (b) charge generating compounds 을 포함하는 유기감광체에 관한 것이다: It relates to an organophotoreceptor comprising: <화학식 1> <Formula 1> 상기 화학식 1 중, In Formula 1, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 및 R 8 은 독립적으로, 알킬기, 알케닐기, 알키닐기, 아릴기 또는 헤테로사이클릭기이고; R 9 및 R 10 은 독립적으로, 수소, 알킬기, 알케닐기, 알키닐기, 아릴기 또는 헤테로사이클릭기이고; Ar 1 및 Ar 2 는 독립적으로, 방향족기이고; Y는 아릴아민기를 포함하고; X 1 및 X 2 는 독립적으로, 연결기이다. 이를 이용한 전자사진 화상형성 장치 및 전자사진 화상형성 방법도 기재되어 있다. R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are independently alkyl, alkenyl, alkynyl, aryl or heterocyclic groups; R 9 and R 10 are independently hydrogen, alkyl group, alkenyl group, alkynyl group, aryl group or heterocyclic group; Ar 1 and Ar 2 are independently an aromatic group; Y comprises an arylamine group; X 1 and X 2 are independently a linking group. An electrophotographic image forming apparatus and an electrophotographic image forming method using the same are also described.

Patent JPS6341053B2

Imaging members

An imaging member having a charge transport layer with multiple regions or layers is provided. The charge transport layer includes at least two charge transport layers coated from solutions of different components and concentrations, wherein the second (top) transport layer comprises a lower concentration of different charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the second (top) charge transport layer is a high mobility hole transport compound. The charge transport compound in each layer is dissolved or molecularly dispersed in an electrically inactive film forming polymer to form a solid solution. In such a construction, the resulting dual charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.

Imaging member having a dual charge transport layer

An imaging member having a charge transport layer with multiple regions or layers is provided. The charge transport layer includes at least two charge transport layers coated from solutions of different components and concentrations, wherein the second (top) transport layer comprises a lower concentration of different charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the second (top) charge transport layer is a high mobility hole transport compound. The charge transport compound in each layer is dissolved or molecularly dispersed in an electrically inactive film forming polymer to form a solid solution. In such a construction, the resulting dual charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.

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。

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.

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##

Organic photoconductor

Electrophotographic receptor

Electrophotographic photosensitive member containing a halogen substituted hydrazone

An electrophotographic photosensitive member comprises an electrically conductive substrate and a layer containing a hydrazone compound represented by the following formula (1) and a binder: ##STR1## wherein; R 1 and R 2 each represent alkyl, aralkyl, or aryl, substituted or unsubstituted, or R 1 and R 2 together with the nitrogen atom to which they are attached form a 5- or 6-membered ring; R 3 represents halogen or fluoroalkyl; R 4 and R 6 each represent hydrogen or halogen; R 5 represents hydrogen, alkyl, alkoxyl, or halogen; each of R 7 and R 8 represents alkyl, aralkyl, or aryl, substituted or unsubstituted; and n represents an integer of 0 or 1.

Electrophotographic receptor

Electrophotographic receptor

Electrophotographic sensitive body

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Electrophotographic photosensitive member

Electrophotographic member having layer containing methylidenyl hydrazone compound

An electrophotographic photosensitive member is characterized by having a layer which contains at least one hydrazone compound represented by the following formula (1) or (2): ##STR1## wherein R 11 represents substituted or unsubstituted naphthyl; R 12 represents substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl; R 13 represents hydrogen, alkyl, or alkoxy; R 14 and R 15 each represent substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl; n is 0 or 1; when n=1, R 14 and R 15 , together with the nitrogen which links them, may complete a cyclic amino group; X represents a group necessary for completing a benzene ring or naphthalene ring; R 21 and R 22 each represent hydrogen, halogen, alkyl, alkoxy or disalkylamino; and R 23 , R 24 , R 25 , R 26 and R 27 each represent substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl.

Patent JPS6329738B2

Patent JPH026048B2

Electrophotographic recording material

Es wird ein elektrophotographisches Aufzeichnungsmaterial beschrieben aus einem elektrisch leitenden Schichtträger und mindestens einer bindemittelhaltigen photoleitfähigen Schicht, die ein Perylentetracarbonsäurederivat als Ladungsträger erzeugende Verbindung und ein Hydrazon- bzw. Pyrazolinderivat als Ladungen transportierende Verbindung enthält, bei dem die Ladungsträger erzeugende Verbindung ein Perylentetracarbonsäurediimid ist und die Ladungen transportierende Verbindung der allgemeinen Formel $F1 entspricht, in der X - Methyl oder Methoxyl n - Null oder 1 Y - Phenyl und Z - Wasserstoff oder Y und Z - die Gruppierung $F2 mit A-Phenyl oder p-Tolyl bedeuten.

Electrophotoreceptor using styrene-maleic anhydride copolymer as the polymeric binder

An electrophotoreceptor comprising a conductive substrate, a charge generation layer and a charge transport layer wherein the charge transport layer comprises a polymeric binder and a charge transport material. The improvement resides in that a copolymer of styrene and maleic acid is used as the binder in the charge transport material. The photoreceptor exhibits improved sensitivity, residual potential, durability and reproducibility.

Electrophotographic receptor

Electrophotographic sensitive body

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Electrophotographic receptor

Electrophotographic receptor

Electrophotographic receptor

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Electrophotographic receptor

Electrophotosensitive material with combination of charge transfer materials

The present invention provides an electrophotosensitive material containing the diamine derivative represented by the following general formula (I) and at least one selected from the group consisting of the hydrazone compound, fluorene compound and m-phenylenediamine compound. ##STR1## wherein R 5 to R 9 , l, m, n, o and p are as defined.

Patent JPS5542380B2

Electrophotographic recording material and its application in a copying process

ELECTROPHOTOGRAPHIC ELEMENT COMPRISING VARIOUS LAYERS

Electrophotographic receptor

Electrophotographic receptor

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Electrophotographic sensitive body

Photoreceptor for electrophotography, bishydrazone compound and intermediate thereof, and method for producing bishydrazone compound and intermediate thereof

A photoreceptor for electrophotography of the present invention includes a photosensitive layer provided on a conductive support, the photosensitive layer containing a bishydrazone compound represented by the following general formula (Ia): ##STR1## where: R 1 and R 2 each represent a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a heterocyclic group, or an alkyl group which has 1 to 4 carbon atoms; "a" represents an alkyl group which has 1 to 3 carbon atoms, an alkoxy group which has 1 to 3 carbon atoms, a dialkylamino group which has 1 to 3 carbon atoms, a halogen atom, or a hydrogen atom; and n represents an integer of 1 to 3, wherein, if n is 2 or greater, a plurality of "a" substituents may be identical to or different from one another, or the substituents may form a ring.

Crystalline oxotitanylphthalocyanine and electrophotographic photoreceptor using the same

An object of the invention is to improve the photosensitivity characteristics, characteristics on repeated use and stability of a photoreceptor. A photosensitive layer formed on a conductive support of a photoreceptor contains crystalline oxotitanylphthalocyanine having major peaks in an X-ray diffraction spectrum at Bragg angles (2θ±0.2°) of 7.3°, 9.4°, 9.6°, 11.6°, 13.3°, 17,9°, 24.1° and 27.2°, wherein a peak bundle formed by overlapping the peaks at 9.4° and 9.6° is the largest peak, and the peak at 27.2° is the secondary largest peak as a charge generating substance. Furthermore, it contains a bisamine compound, an N,N′-bisenamine compound, a styryl compound, an amine-hydrazone compound, a benzofuran-bishydrazone compound, a bisenamine compound, a benzofuran-bishydrazone compound or a benzofuran-bis-cyclic hydrazone compound represented by the particular structural formulae as a charge transporting substance.

Patent JPS6140104B2

Patent JPS637218B2

Patent JPS6034099B2

Electrophotographic member with hydrazone or ketazine compounds

An electrophotographic photosensitive member is characterized by having a layer containing at least one of hydrazone group compounds represented by the following formula (1) or of ketazine group compounds represented by the following formula (2): ##STR1## In the formula, R 11 and R 12 independently of one another represent hydrogen, substituted or unsubstituted aryl, or substituted or unsubstituted heterocyclic radical; R 13 and R 14 independently of one another represent subsituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heterocyclic radical; and R 15 represents a divalent organic residue. ##STR2## In the formula, R 21 , R 22 , R 23 , and R 24 independently one another represent substituted or unsubstituted alkyl, substituted or substituted aralkyl, or substituted or unsubstituted aryl, or R 21 and R 22 , together with the nitrogen which links them, represent cyclic amino radical, and R 23 and R 24 , together with the nitrogen which links them, represent cyclic amino radical.

Layered electrophotographic photoconductor containing a hydrazone

A layered electrophotographic photoconductor whose charge generation layer comprises a bisazo pigment selected from the group consisting of the bisazo pigments represented by the following general formula (I) and whose charge transport layer contains a charge transport material selected from the group consisting of the hydrazone compounds represented by the following general formula (2): ##STR1## wherein A represents --C 6 H 4 --Cl(o), --C 6 H 4 --Cl(m), --C 6 H 4 --Br(o), --C 6 H 4 --Br(m), --C 6 H 4 --F(o), --C 6 H 4 --F(m), --C 6 H 4 --F(p), or --C 6 H 4 --I(m), ##STR2## wherein R 1 represents a substituted or non-substituted naphthyl group, a substituted or non-substituted anthryl group, a substituted or non-substituted styryl group, or ##STR3## wherein B represents hydrogen, an alkyl group with one to three carbon atoms, an alkoxy group with one to three carbon atoms, a dialkylamino group, halogen, a nitro group, or a hydroxy group, and n represents an integer of 1 to 5, and when n is 2 or more, B can be different or identical to each other; R 2 represents an alkyl group, a benzyl group; and R 3 represents a phenyl group or a methoxyphenyl group.

Patent JPS6058469B2

NEW PHENYL HYDRAZONE AND THEIR USE

Patent JPS6140985B2

Hydrazone photoconductive materials for electrophotography

Photoconductive materials for electrophotography which have high sensitivity and high durability are provided by incorporating at least one hydrazone compound represented by the following general formula (I) in photoconductive layer: ##STR1## (wherein M is 0, 1, 2 or 3 and l is 1 or 2), R 2 is a hydrogen atom, a lower alkyl group, a lower alkoxy group or a halogen atom, R 3 is a hydrogen atom, a lower alkyl group or an aryl group, R 4 is a hydrogen atom, a lower alkyl group, a lower alkoxy group or a halogen atom, R 5 is an allyl group, propenyl group or ##STR2## (wherein R 6 is a lower alkyl group, a lower alkoxy group or a halogen atom), and n is 0 or 1.

Organic photoconductors with reduced fatigue

Fatigue in organic photoconductors in which the charge transport layer is a source of acidic protons is reduced by including in the charge transport layer a small amount of a nonvolatile basic amine soluble in a common solvent with a charge transport material and the binder of the charge transport layer.

Photosensitive member containing hydrazone compound with styryl structure

The present invention relates to a photosensitive member comprising an electrically conductive substrate, and a photosensitive layer formed on or over the substrate and including a hydrazone compound represented by the general formula (I); ##STR1##

Electrophotographic sensitive materials

Electrophotographic photoconductor contains ordered copolyester polycarbonate binder

A layered electrophotographic photoconductor is disclosed having a ground plane layer, a charge generating layer carried by the ground plane layer, and a charge transport layer carried by the charge generating layer. The polymeric binder material of the charge transport layer and the charge generation layer comprises an ordered copolyestercarbonate whose ester content is in the range of about 35 wt. % to about 70 wt. %, of which about 60 wt. % to about 70 wt. % is preferred, and of which about 70 wt. % is the most preferred. The charge generating molecule is a squarylium, and more specifically 2,4-bis-(4-dimethylamino-2-hydroxyphenyl) cyclobutene diylium-1,3-diolate (OHSQ), or an operative phthalocyanine compound, and preferably oxytitanium phthalocyanine. The charge transporting molecule is a hydrazone, and more specifically 4-diethylaminobenzaldehyde-1,1-diphenylhydrazone (DEH), or 4-diphenylaminobenzaldehyde-1,1-diphenylhydrazone (TPH).

Hydrazone compounds as charge transport material in photoreceptors

Organic photoreceptors of the functionally separated laminated type containing a hydrazone compound in the charge transport layer thereof which provides low crystallinity and improved sensitivity, durability, and reproducibility. The hydrazone compound disclosed in the present invention is presented by the following general formula (I): ##STR1## wherein R 1 represents a substituted or unsubstituted C 1 -C 4 alkyl group, R 2 represents a hydrogen atom, or an alkyl or alkoxy group; n is an integer of either 1 or 2; R 3 and R 4 each independently represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted aralkyl group; or alternatively R 3 and R 4 form a substituted or unsubstituted aromatic heterocyclic ring residue cojointly with the nitrogen atom to which they are bonded.

Imaging members with improved wear characteristics

Benzaldehyde-based hydrazone compounds of the formula ##STR1## wherein A represents a monocyclic or polycyclic divalent aromatic radical including at least one hydroxy-terminated substituent; R 1 represents an N,N-dialkyl amino, N,N-diaryl amino or N-alkyl,N-aryl amino group; each R 2 independently represents an alkyl, halogen, alkoxy group or substituted or unsubstituted monocyclic or polycyclic monovalent aromatic radical, with the proviso that at least one R 2 is aromatic; and R 3 represents hydrogen, alkyl or a substituted or unsubstituted monocyclic or polycyclic monovalent aromatic radical.

Dual layer photoconductors with charge generation layer containing hindered hydroxylated aromatic compound

Photoconductors comprise a substrate, a charge transport layer, and a charge generation layer. The charge transport layer comprises binder and a charge transport compound comprising at least one of a hydrazone, aromatic amine, or substituted aromatic amine, and the charge generation layer comprises binder, a phthalocyanine charge generating compound and a hindered hydroxylated aromatic compound. The hindered hydroxylated aromatic compound reduces electrical fatigue upon cycling without adversely effecting the electrical performance of the photoconductors.

Organic photoconductive material, electrophotographic photosensitive member and image forming apparatus using the same

Electrophotographic photoreceptor and image forming apparatus including the same

An electrophotographic photoreceptor of high durability capable of providing stable excellent electrical characteristics over a prolonged period of time, which electrophotographic photoreceptor excels in mechanical strength. A photosensitive layer ( 14 ) of an electrophotographic photoreceptor ( 1 ) includes a polyarylate resin having structural units, for example, those of formula (1) and an enamine compound represented by, for example, formula (2) The variables R 1 , R 2 , R 3 , R 4 , R 7 ˜R 10 , X 1 , Ar 1 , Ar 2 , Ar 3 , Ar 4 , Ar 5 , R 11 , R 12 , R 13 , R 14 , a, m, and n are as defined in the specification. By virtue of these, the electrophotographic photoreceptor ( 1 ) of excellent mechanical strength and favorable electrical characteristics can be realized.

Organic photoconductive material, electrophotographic photoreceptor and image forming apparatus using the same

【課題】帯電電位が高く、高感度で、充分な光応答性を示し、また耐久性に優れ、低温環境下または高速プロセスで用いた場合や光暴露によってもそれらの特性が低下することのない信頼性の高い電子写真感光体を実現可能な有機光導電性材料、それを用いた電子写真感光体および画像形成装置を提供する。 【解決手段】下記一般式（１）で示される有機光導電性材料を製造し、この有機光導電性材料を感光層に電荷輸送物質として含有させて電子写真感光体を作製し、画像形成装置に搭載することを特徴とする。 例えば、 【選択図】 なし The present invention has a high charging potential, high sensitivity, sufficient photoresponsiveness, and excellent durability, and its characteristics do not deteriorate even when used in a low-temperature environment or in a high-speed process or by light exposure. Provided are an organic photoconductive material capable of realizing a highly reliable electrophotographic photosensitive member, and an electrophotographic photosensitive member and an image forming apparatus using the same. An organic photoconductive material represented by the following general formula (1) is produced, and the organic photoconductive material is contained in a photosensitive layer as a charge transport material to produce an electrophotographic photoreceptor. It is characterized in that it is mounted on. For example, [Selection diagram] None

Electrophotographic photosensitive member and image forming apparatus having the same

Electrophotographic photosensitive member and image forming apparatus having the same

Image forming apparatus

Electrophotographic sensitive body

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Hydrazone compound, electrophotographic photoreceptor using the hydrazone compound, and image forming apparatus provided with the electrophotographic photoreceptor

Electrophotographic photosensitive body, image forming device, and electrophotographic cartridge

Disclosed is an electrophotographic photosensitive body with high sensitivity, which is hardly affected by a transfer in the electrophotographic process. Specifically disclosed is an electrophotographic photosensitive body comprising a foundation layer containing metal oxide particles and a binder resin, and a photosensitive layer formed on the foundation layer. In this electrophotographic photosensitive body, the metal oxide particles dispersed in a solvent obtained by mixing methanol and 1-propanol at a weight ratio of 7:3 have a volume average particle diameter of not more than 0.1 μm and a cumulative 90% particle diameter of not more than 0.3 μm, as measured by dynamic light scattering. Further, a binder resin having an ester bond is contained in the photosensitive layer.

Improvements in and relating to electrophotographic reproduction materials

A coating composition for electrophotographic plates comprises a natural or synthetic resin and a photoconductive hydrazone of the formula R1R2C=N.NR3R4, in which the R symbols represent H, alkyl, aralkyl, cycloalkyl, acyl, aryl or heterocyclic aromatic groups, of which R1 and R2 may be joined to form a ring. A sensitizing dyestuff or chlorophyll may be present, and in one example sulphosalicylic acid is added. Specified solvents are water, ethanol, glycol monomethyl ether, methyl ethyl ketone and toluene, depending on the nature of the resin of which many types are listed. The support may be metal, (e.g. aluminium), glass or a resin.ALSO:The Specification describes photoconductive resinous compositions as in Specification 853,880 but with the photoconductor there specified replaced by a hydrazone of the formula R1R2C=N.NR3R4, in which the R symbols represent H, alkyl, aralkyl, cycloalkyl, acyl, aryl or heterocyclic aromatic groups, of which R1 and R2 may be joined to form a ring. Particularly suitable are those in which R3 is acyl and R4 is H, especially the benzoyl, substituted benzoyl and pyridoyl hydrazones of aromatic and heterocyclic aldehydes. Many suitable compounds of the above formula are mentioned, alone or in admixture with one another. The sensitizing dyestuffs mentioned in Specification 853,880 may also be present, and in example sulphosalicylic acid is added.ALSO:Acyl - hydrazones of the formula R1R2C=N-NH-CO-R are prepared by heating carboxylic acid hydrazides with aldehydes, ketones or quinones in an organic solvent, e.g. ethanol; R is H, alkyl, aralkyl, aryl or a heterocyclic aromatic radical (or may be an alkylene group, giving a bis-compound), R1 is H, alkyl, or aryl, and R2 is aralkyl, aryl or a heterocyclic aromatic radical; R1 and R2 may be joined to form a ring. In examples R is H, heptadecyl, benzyl, phenyl, tolyl, hydroxyphenyl, methoxyphenyl, aminophenyl, methylaminophenyl, methylphenylamino - phenyl, dimethylaminophenyl, ...

Material and equipment for electrostatic recordings

Heat and light sensitive layers containing hydrazones

Certain ketone and aldehyde organic hydrazones exhibit utility in radiation-sensitive layers and elements as a spectral sensitizer for silver halide and as a selective reducing agent in photographic, thermographic and photothermographic layers.

Patent JPH024892B2

Patent JPH0434742B2

Electrophotographic recording material and its application in a copying process

Die Erfindung betrifft ein elektrophotographisches Aufzeichnungsmaterial (10) und dessen Verwendung in einem Kopierverfahren. Das Aufzeichnungsmaterial (10) besteht aus einem elektrisch leitenden Schichtträger, einer Ladungsträger erzeugenden Schicht (12) und einer Ladungstransportschicht (14). Letztere enthält gemäss der Erfindung als Ladungen transportierende Verbindung ein Hydrazon der allgemeinem Formel <IMAGE> in der die Reste <IMAGE> R2 = -OC2H3; -CH3; -C2H5; -H R3 = -H; -OC2H5 R4 = -H; -CH3; -C2H5 R5 = -H; -CH3 R6 = -C4H5; -CH2-C6H5; -CH3; n-C4H9 R7 = -C6H5; -CH3 <IMAGE> bedeuten, und ein polymeres Bindemittel. Eine bevorzugte, Ladungen transportierende Verbindung ist ρ-Diäthylaminobenzaldehyd- (diphenythydrazon). Als Bindemittel wird ein Polycarbonat-, Polyester-oder Acrylherz, oder Mischungen dereiben verwendet. Die Ladungsträgertransportschicht (14), die eine Dicke von mindestens 5 um aufweist, kann, je nach dem Vorzeichen der Aufladung der Landungsträger erzeugenden Schicht, auf der Landungsträger erzeugenden Schicht (12) oder zwischen derselben und dem leitenden Schichtträger angeordnet sein. Die Erfindung bezieht sich auch auf die Verwendung des mehrlagigen Aufzeichnungsmaterials in einem elektrophotographischen Kopierverfahren. The invention relates to an electrophotographic recording material (10) and its use in a copying process. The recording material (10) consists of an electrically conductive layer support, a charge generation layer (12) and a charge transport layer (14). According to the invention, the latter contains a hydrazone of the general formula <IMAGE> in which the radicals <IMAGE> R2 = -OC2H3; -CH3; -C2H5; -H R3 = -H; -OC2H5 R4 = -H; -CH3; -C2H5 R5 = -H; -CH3 R6 = -C4H5; -CH2-C6H5; -CH3; n-C4H9 R7 = -C6H5; -CH3 mean <IMAGE>, and a polymeric binder. A preferred charge transporting compound is ρ-diethylaminobenzaldehyde (diphenythydrazone). A polycarbonate, polyester or acrylic heart, or mixtures thereof ...

Hydrazone containing charge transport element

Electrophotographic element with a phenyhydrazone charge transport layer

An electrophotographic element is prepared by forming a photoconductive layer containing a hydrazone compound therein on an electroconductive support member. The hydrazone compounds represented by the following general formula, are useful as photoconductive materials and as charge transport materials for use in electrophotography: ##STR1## wherein Ar represents a substituted or unsubstituted condensed polycyclic group or heterocyclic group, and R represents a methyl group, an ethyl group, a benzyl group or a phenyl group. The condensed polycyclic group includes a naphthalene ring, and an anthracene ring. The heterocyclic ring includes nitrogen, oxygen and sulfur.

Electrophotographic element

Electrophotographic recording material

Electrophotographic sensitive body

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Laminate type electrophotographic sensitive body

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。