WO2007083714A1 - 電子写真用感光体 - Google Patents
電子写真用感光体 Download PDFInfo
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- WO2007083714A1 WO2007083714A1 PCT/JP2007/050721 JP2007050721W WO2007083714A1 WO 2007083714 A1 WO2007083714 A1 WO 2007083714A1 JP 2007050721 W JP2007050721 W JP 2007050721W WO 2007083714 A1 WO2007083714 A1 WO 2007083714A1
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- G—PHYSICS
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- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0664—Dyes
- G03G5/0696—Phthalocyanines
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/0612—Acyclic or carbocyclic compounds containing nitrogen
- G03G5/0614—Amines
- G03G5/06142—Amines arylamine
- G03G5/06144—Amines arylamine diamine
- G03G5/061443—Amines arylamine diamine benzidine
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- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/0612—Acyclic or carbocyclic compounds containing nitrogen
- G03G5/0614—Amines
- G03G5/06142—Amines arylamine
- G03G5/06144—Amines arylamine diamine
- G03G5/061446—Amines arylamine diamine terphenyl-diamine
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- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/0612—Acyclic or carbocyclic compounds containing nitrogen
- G03G5/0614—Amines
- G03G5/06142—Amines arylamine
- G03G5/06147—Amines arylamine alkenylarylamine
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- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/0612—Acyclic or carbocyclic compounds containing nitrogen
- G03G5/0616—Hydrazines; Hydrazones
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- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0622—Heterocyclic compounds
- G03G5/0624—Heterocyclic compounds containing one hetero ring
- G03G5/0627—Heterocyclic compounds containing one hetero ring being five-membered
- G03G5/0629—Heterocyclic compounds containing one hetero ring being five-membered containing one hetero atom
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- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
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- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0622—Heterocyclic compounds
- G03G5/0624—Heterocyclic compounds containing one hetero ring
- G03G5/0635—Heterocyclic compounds containing one hetero ring being six-membered
- G03G5/0638—Heterocyclic compounds containing one hetero ring being six-membered containing two hetero atoms
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- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0622—Heterocyclic compounds
- G03G5/0624—Heterocyclic compounds containing one hetero ring
- G03G5/0635—Heterocyclic compounds containing one hetero ring being six-membered
- G03G5/064—Heterocyclic compounds containing one hetero ring being six-membered containing three hetero atoms
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- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0622—Heterocyclic compounds
- G03G5/0644—Heterocyclic compounds containing two or more hetero rings
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0662—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic containing metal elements
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0664—Dyes
- G03G5/0666—Dyes containing a methine or polymethine group
- G03G5/0668—Dyes containing a methine or polymethine group containing only one methine or polymethine group
- G03G5/067—Dyes containing a methine or polymethine group containing only one methine or polymethine group containing hetero rings
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0664—Dyes
- G03G5/0666—Dyes containing a methine or polymethine group
- G03G5/0672—Dyes containing a methine or polymethine group containing two or more methine or polymethine groups
- G03G5/0674—Dyes containing a methine or polymethine group containing two or more methine or polymethine groups containing hetero rings
Definitions
- the present invention relates to an electrophotographic photoreceptor. Specifically, the present invention relates to an electrophotographic photoreceptor excellent in durability with small changes in charging potential and residual potential even after repeated use.
- inorganic photoconductive substances such as selenium, zinc oxide, cadmium sulfate, and silicon have been widely used for electrophotographic photoreceptors.
- These inorganic materials have many advantages and various drawbacks.
- selenium has the disadvantage that it is difficult to produce under the condition that it is easily crystallized by heat or mechanical impact, and acid zinc and sulfur cadmium have problems with moisture resistance and mechanical strength, and are added as sensitizers Dyeing causes deterioration of charging and exposure, resulting in lack of durability.
- the conditions for producing silicon are difficult, and because it uses a highly irritating gas, it is costly and sensitive to humidity.
- selenium and sulfur cadmium have toxicity problems.
- Organic photoreceptors using various organic compounds in which the disadvantages of these inorganic photoreceptors are improved are widely used.
- Organic photoreceptors include a single-layer photoreceptor in which a charge generator and a charge transport agent are dispersed in a binder resin, and a laminated photoreceptor that is functionally separated into a charge generation layer and a charge transport layer.
- the feature of the photoconductor such as the latter, which is called a function-separated type !, is that a material suitable for each function can be selected in a wide range, and a photoconductor having an arbitrary performance can be easily produced. A lot of research has been conducted.
- organic materials have many advantages that inorganic materials do not have, they can sufficiently satisfy all the characteristics required for electrophotographic photoreceptors. It is the current state. That is, charging potential decreases, residual potential increases, sensitivity changes due to repeated use. The deterioration of the image quality is caused by the conversion. The causes of this degradation are not completely understood, but some factors include ozone generated during charging by corona discharge, active gases such as NOx, exposure, and ultraviolet rays and heat contained in static elimination light. It may be possible to decompose the charge transport agent.
- a method of combining a hydrazone compound and an acid inhibitor for example, refer to Patent Document 1
- a method of combining a butadiene compound and an acid inhibitor for example, refer to Patent Document 2
- a method of combining a hydrazone compound with a metal complex or a metal salt of an aromatic carboxylic acid has good initial sensitivity. Those that are not improved and are less likely to deteriorate due to repeated use have problems in initial sensitivity and chargeability. Also, when using metal salts, etc., if the metal is Cr, it may contaminate the environment. As described above, the current situation is that the effect of suppressing deterioration is not yet fully obtained.
- Patent Document 1 Japanese Patent Laid-Open No. 1-044946
- Patent Document 2 JP-A-1-118845
- Patent Document 3 Japanese Patent No. 2858324
- the present invention an increase in the residual potential, which has a low residual potential in the initial stage, is suppressed, a decrease in the charged potential is prevented, and fatigue strength is reduced even after repeated use.
- the object is to provide an electrophotographic photoreceptor.
- the present invention provides the following general formula (1) on a conductive support.
- Rl, R2, R3 and R4 may be the same or different, hydrogen, a linear or branched alkyl group having 1 to 8 carbon atoms, or a linear or branched group.
- M represents a metal
- X + represents a cation.
- M is an integer of 1 or 3
- n is an integer of 1 or 2
- p is an integer of 0 to 3
- the present invention also relates to a method for producing the above-described electrophotographic photoreceptor.
- the charge transfer agent having an aryl aminophenyl group in the molecule may have a polycyclic structure by bonding the aryl group and the phenol group.
- R1 and R3 are alkyl groups having 1 to 8 carbon atoms
- R2 and R4 are hydrogen
- M is divalent (excluding Hg) or trivalent (excluding Cr) )
- X is a monovalent cation.
- metal M represented by M in the general formula (1) include the following.
- Bivalent metal such as Zn or trivalent metal such as Al, Co, Fe, Mn, Ni, Ti.
- the photosensitive layer of the electrophotographic photoreceptor of the present invention has the following general formula (2), (3) or (4) as a charge transfer agent having an arylaminophenyl group in the molecule.
- R5 and R6 may be the same or different, a linear or branched alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted straight chain having 7 to 20 carbon atoms
- R7 and R8 may be the same or different.
- R5 to R8 further have a substituent, A halogen atom, an alkoxy group, an aryloxy group, a dial
- R9 and RIO may be the same or different and are each a linear or branched alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted straight chain having 7 to 20 carbon atoms
- R11 represents a hydrogen atom, 1 carbon atom, 12 straight or branched alkyl groups, substituted or unsubstituted 7 or 20 straight chain aralkyl groups, substituted or unsubstituted 7 or 20 branched carbon atoms
- Z represents a divalent group of 0, S or N (R15).
- R13 and R14 may be the same or different, and may be a linear or branched group having 1 to 12 carbon atoms.
- R16 represents a hydrogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted carbon atom having 7 or 20 carbon atoms.
- An acyl group, an alkoxycarbo group having 2 to 5 carbon atoms, R 15 represents a straight-chain or straight-chain group having 1 to 12 carbon atoms, or a nitro group, a mono- or di-substituted amino group substituted with an alkyl group having 1 to 4 carbon atoms, or a substituted or unsubstituted amide group.
- a branched alkyl group, a substituted or unsubstituted linear aralkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted branched aralkyl group having 1 to 12 carbon atoms, and R13 to R16 are further represented.
- it may have a halogen atom, an alkoxy group, an aryloxy group, a dialkylamino group or an alkylthio group as a substituent.
- R13 or R14 is an aryl group, it further has an alkyl group. It is preferable to contain at least one hydrazone compound represented by).
- the photosensitive layer of the electrophotographic photoreceptor of the present invention may be represented by the following general formula (5) as a charge transport agent having an arylaminophenol group in the molecule.
- R17 and R18 may be the same or different, a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthryl group, substituted or unsubstituted R 19 represents a substituted fluorenyl group or a substituted or unsubstituted heterocyclic group, and examples of the substituent include an alkyl group, an alkoxy group, a halogen atom, a hydroxyl group, and a full group, and R 19 may be substituted.
- R20 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms.
- t is an integer of 1 or 2
- t 2
- R21 represents a substituted or unsubstituted phenyl group, and an alkyl group, an alkoxy group as a substituent.
- the photosensitive layer of the electrophotographic photoreceptor of the present invention may be represented by the following general formula (6) as a charge transporting agent having an arylaminophenol group in the molecule.
- R22 represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or a halogen atom
- R23, R24, R25, and R26 are the same or different.
- the photosensitive layer of the electrophotographic photoreceptor of the present invention may be represented by the following general formula (7) as a charge transfer agent having an arylaminophenol group in the molecule.
- R27 and R28 may be the same or different and each represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, a halogen atom, or a mono- or di-substituted amino group.
- the two substituents that are substituted on the well group may be the same or different.
- Arl and Ar2 are substituted or unsubstituted aromatic hydrocarbon divalent groups which may be the same or different.
- R29 and R30 are hydrogen atoms, alkyl groups having 1 to 8 carbon atoms, carbon atoms 1 Or an alkoxy group of 8, a substituted or unsubstituted aralkyl group, a halogen atom, or a disubstituted amino group. It is preferable to contain at least one p-terphe-Louis compound represented by
- the metal complex of the aromatic oxycarboxylic acid represented by the general formula (1) is preferably used with respect to the amount of charge transporting agent having an arylaminophenol group in the molecule. Is added in an amount of 0.01 to 0.35 mass%, more preferably 0.05 to 0.2 mass%. If the added amount is less than 0.01% by mass, a sufficient durability improvement effect may not be obtained. On the other hand, if it exceeds 0.35% by mass, a further durability improvement effect cannot be obtained. There is a tendency to not, and it is disadvantageous in cost.
- the metal complex of the aromatic oxycarboxylic acid represented by the general formula (1) is preferably 0.01 to 0.35% by mass with respect to the charge transfer agent of the electrophotographic photoreceptor. More preferably, by adding 0.05 to 0.2% by mass, it has a photosensitive layer containing a charge transfer agent having an arylaminophenol group in the molecule, and has excellent durability. ! Provided is a method for producing a photoconductor for electrophotography.
- FIG. 1 is a schematic cross-sectional view showing a layer structure of a function-separated electrophotographic photoreceptor.
- FIG. 2 is a schematic cross-sectional view showing a layer structure of a function-separated electrophotographic photoreceptor.
- FIG. 3 is a schematic cross-sectional view showing a layer structure of a function-separated electrophotographic photoreceptor in which an undercoat layer is provided between a charge generation layer and a conductive support.
- FIG. 2 is a schematic cross-sectional view showing a layer structure of a function-separated electrophotographic photoreceptor having a protective layer thereon.
- FIG. 5 is a schematic cross-sectional view showing the layer structure of a function-separated electrophotographic photoreceptor in which an undercoat layer is provided between a charge generation layer and a conductive support, and a protective layer is provided on the charge transport layer. .
- FIG. 6 is a schematic cross-sectional view showing the layer structure of a single-layer electrophotographic photoreceptor.
- FIG. 7 is a schematic cross-sectional view showing a layer structure of a single-layer electrophotographic photosensitive member in which an undercoat layer is provided between a photosensitive layer and a conductive support.
- photosensitive layer there are various types of the photosensitive layer, and the photosensitive layer of the electrophotographic photoreceptor of the present invention may be that! As representative examples, these photoreceptors are shown in FIGS.
- FIG. 1 and FIG. 2 show a charge generation layer 2 containing a charge generation material as a main component on a conductive support 1, and a charge transport layer 3 containing a charge transport material and a binder resin as main components.
- a photosensitive layer 4 made of a laminate is provided. At this time, as shown in FIG. 3, FIG. 4 and FIG. 5, the photosensitive layer 4 is protected as an outermost layer which may be provided via the undercoat layer 5 for adjusting the charge provided on the conductive support. Layer 8 may be provided. Further, in the present invention, as shown in FIGS. 6 and 7, the photosensitive layer 4 obtained by dissolving or dispersing the charge generating material 7 in the layer 6 mainly composed of the charge transporting material and the binder resin is conductively supported. Directly on body 1 May be provided via the undercoat layer 5.
- the photoreceptor of the present invention can be produced according to a conventional method as follows. For example, one or more of the metal complex of the aromatic oxycarboxylic acid represented by the general formula (1) described above and the specific amine compound represented by the general formulas (2) to (7) are bound to the resin. At the same time, it is dissolved in a suitable solvent, and if necessary, a coating solution is prepared by adding a charge generating substance, an electron-withdrawing compound, a plasticizer, a pigment or the like. A photosensitive member can be produced by applying this coating solution on a conductive support and drying to form a photosensitive layer of several to several tens; zm.
- One or more of the amine compounds are dissolved in a suitable solvent together with the binder resin, and a coating solution prepared by adding a plasticizer, pigment, etc. is applied on the charge generation layer, or the above-mentioned It can be produced by forming a charge generation layer on a charge transport layer obtained by applying a coating solution.
- the photoreceptor manufactured in this manner may be provided with an undercoat layer and a protective layer as necessary.
- the hydrazone compound represented by the general formulas (2) to (4) used in the present invention can be obtained using production methods and synthesis examples reported in the past (see, for example, Patent Document 4). ).
- the Stilil compound represented by the general formula (5) used in the present invention can also be obtained by using a production method and synthesis examples reported in the past (see, for example, Patent Document 5).
- the benzidine compound represented by the general formula (6) used in the present invention can be obtained by using a production method and synthesis examples reported in the past (see, for example, Patent Document 6).
- the P-terphe-Louis compound represented by the general formula (7) used in the present invention can be obtained by using a production method and synthesis examples reported in the past (see, for example, Patent Document 6).
- Patent Document 4 Japanese Patent Laid-Open No. 9-202762
- Patent Document 5 Japanese Patent Laid-Open No. 8-211636
- Patent Document 6 Japanese Patent Laid-Open No. 7-126225
- a general method for producing a metal complex of an aromatic oxycarboxylic acid used in the present invention includes water and
- Patent Document 7 Japanese Patent Publication No. 55-042752
- Patent Document 8 Japanese Patent Laid-Open No. 61-069073
- Patent Document 9 Japanese Patent Publication No. 8-010360
- metal complex of the aromatic oxycarboxylic acid represented by the general formula (1) used in the present invention include the compounds shown in Table 1.
- conductive support on which the photosensitive layer of the present invention is formed materials used in known electrophotographic photoreceptors can be used.
- Conductive treatment was performed by applying a conductive material such as metal drum, sheet or laminate of these metals, vapor deposition, or metal powder, force bon black, copper iodide, or polymer electrolyte together with an appropriate noder.
- Plastic film, plastic drum, paper, paper tube, or plastic film or plastic drum imparted with conductivity by containing a conductive material can be used.
- an undercoat layer containing a resin or a resin and a pigment may be provided between the conductive support and the photosensitive layer.
- the pigment dispersed in the undercoat layer may be a commonly used powder, but a white color with almost no absorption in the near infrared or a color close to this is desirable when considering high sensitivity.
- examples of such pigments include metal oxides such as acid titanium, acid zinc, tin oxide, indium oxide, acid zirconium, alumina, and silica, and are hygroscopic. There is no change in the environment, and something that is desirable is desirable.
- the resin used for the undercoat layer is preferably a resin having a high solvent resistance with respect to a general organic solvent, considering that a photosensitive layer is applied thereon with a solvent.
- resins include water-soluble resins such as polyvinyl alcohol, casein, and sodium polyacrylate, alcohol-soluble resins such as copolymer nylon and methoxymethyl nylon, polyurethane, melamine resin, and epoxy resin. Curable resin that forms a three-dimensional network structure.
- the charge generation layer in the present invention includes, for example, a charge generation agent, a binder resin, and additives that are added as necessary.
- Examples of the production method thereof include a coating method, a vapor deposition method, and a CV.
- Examples include D method.
- various crystal types of titanium phthalocyanine oxide and Cu-Ka have a diffraction angle 20 0 ⁇ 0.2 ° in the X-ray diffraction spectrum of 9.3, 10. 6, 13 Titatal phthalocyanine oxide with strong peaks at 2, 15. 1, 2 0. 8, 23. 3, 26.3, diffraction angle 2 ⁇ ⁇ 0.2 ° force ⁇ 7.5, 10. 3, 12 6, 25.5, 24.3, 25.4, 28.6 Strong!
- metal-free phthalocyanine of various crystal types such as ⁇ type, X type, copper phthalocyanine, aluminum phthalocyanine, zinc phthalocyanine, model, type, ⁇ -type oxothal phthalocyanine Cobalt phthalos
- Phthalocyanine pigments such as guanine, hydroxygallium
- An azo pigment having a triphenylamine skeleton see, for example, Patent Document 10
- an azo pigment having a strong rubazole skeleton see, for example, Patent Document 11
- an azo pigment having a fluorene skeleton see, for example, Patent Document 12
- Azo pigments having an oxadiazole skeleton for example, see Patent Document 13
- azo pigments having a bis-stilbene skeleton for example, see Patent Document 14
- azo pigments having a dibenzothiophene skeleton for example, see Patent Document 15
- An azo pigment having a distyrylbenzene skeleton see, for example, Patent Document 16
- an azo pigment having a distyrylcarbazole skeleton see, for example, Patent Document 17
- an azo pigment having a distyryloxadiazole skeleton for example, Patent Document 10
- an azo pigment having a strong rubazole skeleton see, for example, Patent Document 11
- Pigments for example, see Patent Document 18
- azo pigments having a stilbene skeleton for example, see Patent Document 19
- having a force rubazole skeleton Triazo pigments (for example, see Patent Documents 20 to 21), azo pigments having an anthraquinone skeleton (for example, see Patent Document 22), bisazo pigments having a diphenylpolyene skeleton (for example, see Patent Documents 23 to 27), etc.
- Azo pigments for example, see Patent Document 18
- azo pigments having a stilbene skeleton for example, see Patent Document 19
- Triazo pigments for example, see Patent Documents 20 to 21
- azo pigments having an anthraquinone skeleton for example, see Patent Document 22
- bisazo pigments having a diphenylpolyene skeleton for example, see Patent Documents 23 to 27
- Azo pigments Perylene pigments such as perylene acid anhydride and perylene imide.
- Polycyclic quinone pigments such as anthraquinone derivatives, anthanthrone derivatives, dibenzpyrenequinone derivatives, pyranthrone derivatives, violanthrone derivatives and isoviolanthrone derivatives.
- Cyanine and azomethine pigments examples include indigoid pigments, bisbenzimidazole pigments, azurenium salts, pyrylium salts, thiapyrylium salts, benzopyrylium salts, and squarylium salts. These may be used alone or in admixture of two or more if necessary.
- Patent Document 10 JP-A-53-132347
- Patent Document 11 Japanese Patent Application Laid-Open No. 53-— 095033
- Patent Document 12 JP 54- — 022834 A
- Patent Document 13 Japanese Patent Application Laid-Open No. 54- — 012742
- Patent Document 14 JP 54- — 017733 A
- Patent Document 15 Japanese Patent Application Laid-Open No. 54- — 021728
- Patent Document 16 Japanese Patent Application Laid-Open No. 53--133445
- Patent Document 17 JP 54- — 017734 A Patent Document 18 Japanese Patent Laid-Open No. 54-002129
- Patent Document 19 Japanese Patent Laid-Open No. 53-138229
- Patent Document 20 JP-A-57-195767
- Patent Document 21 JP-A-57-195768
- Patent Document 22 JP-A-57-202545
- Patent Document 23 JP 59-129857 A
- Patent Document 24 JP-A 62-267363
- Patent Document 25 JP-A-64-079753
- Patent Document 26 Japanese Patent Publication No. 3-034503
- Patent Document 27 Japanese Patent Publication No. 4-052459
- the binder used in the charge generation layer is not particularly limited.
- additives used as necessary include antioxidants, ultraviolet absorbers, light stabilizers, dispersants, adhesives, and sensitizers.
- the film thickness of the charge generation layer formed using the above materials is 0.1 to 2. O / zm, preferably 0.1 to 1. O / zm.
- the charge transport layer in the present invention includes, for example, a charge transport agent, a metal complex of an aromatic carboxylic acid represented by the formula (1), a binder resin, and, if necessary, an electron acceptor and an additive. It can be formed by dissolving in a solvent and coating it on the charge generation layer or on the conductive support or on the undercoat layer and then drying.
- the binder used in the charge transport layer is a heavy compound of a butyl compound such as styrene, butyl acetate, vinyl chloride, acrylic acid ester, methacrylic acid ester or butadiene. Charges such as coalesced and copolymerized, polybulacetal, polycarbonate (see, for example, Patent Documents 28 to 31), polyester, polyphenylene oxide, polyurethane cellulose ester, phenoxy resin, silicone resin, epoxy resin, etc. Various resins that are compatible with transport agents and additives. These may be used singly or in combination of two or more as required.
- the amount of the binder resin used is usually in the range of 0.4 to 10 times by mass, preferably 0.5 to 5 times by mass with respect to the charge transfer agent.
- particularly effective resins include polycarbonate-based resins such as “Iupilon Z” (manufactured by Mitsubishi Engineering Plastics) and “Bisphenol A-biphenol alcohol polycarbonate” (manufactured by Idemitsu Kosan Co., Ltd.).
- Patent Document 28 Japanese Patent Application Laid-Open No. 60-172044
- Patent Document 29 Japanese Patent Laid-Open No. 62-247374
- Patent Document 30 JP-A 63-148263
- Patent Document 31 Japanese Patent Laid-Open No. 2-254459
- the solvent used for the charge transport layer is not particularly limited as long as it dissolves the charge transport agent, the binder resin, the electron acceptor and the additive.
- tetrahydrofuran 1, 4 Polar organic solvents such as dioxane, methyl ethyl ketone, cyclohexanone, acetonitrile, N, N dimethylformamide, ethyl acetate, aromatic organic solvents such as toluene, xylene, chlorobenzene, chloroform, trichloroethylene, dichloromethane, 1
- Chlorine hydrocarbon solvents such as 2-dichloromethane and tetrasalt-carbon can be used. These may be used alone or in admixture of two or more as required.
- the photosensitive layer of the present invention may contain an electron accepting substance for the purpose of improving sensitivity, reducing residual potential, or reducing fatigue during repeated use.
- an electron-accepting substance include succinic anhydride, maleic anhydride, dibromosuccinic anhydride, anhydrous phthalic acid, tetrachlorophthalic anhydride, tetrabromophthalic anhydride, 3--torophthalic anhydride, 4 -Trophthalic anhydride, pyromellitic anhydride, meritic anhydride, tetracyanoethylene, tetracyanodimethane, o dinitrobenzene, m-dinitrobenzene, 1, 3, 5-trinitrobenzene, p-nitrobenzonitrile, picryl chloride , Quinone chlorimide, chloranil, bromanyl, dichlorodisiano p benzoquinone, anthraquinone, dinitro Anthraquinone, 2, 3
- a surface protective layer may be provided on the surface of the photoreceptor, if necessary.
- a resin such as polyester or polyamide, a metal capable of adjusting electric resistance, a metal oxide, or the like can be mixed and used. It is desirable that this surface protective layer be as transparent as possible in the light absorption wavelength region of the charge generating agent.
- the part in an Example represents a mass part and a density
- concentration represents the mass%.
- the diffraction angle 2 0 ⁇ 0.2 ° in the X-ray diffraction spectrum of Cu— ⁇ ⁇ is 7.5, 10. 3, 12. 6, 22.5, 24. 3, 25. 4, 28 6 [Strong! Titanino phthalocyanine oxide with ⁇ peak (charge generator No. 1)
- aromatic oxycarboxylic acid metal complex metal complex No. 1
- 0.1 part aromatic oxycarboxylic acid metal complex
- bendidine compound charge transport agent No. 1
- H 3 cq OCH 3 100 parts were added to 962 parts of a 13.0% tetrahydrofuran solution of polycarbonate resin (Iupilon Z, manufactured by Mitsubishi Engineering Plastics Co., Ltd.), and the additives and charge transport agent were completely dissolved by applying ultrasonic waves. .
- This solution was applied onto the above-described charge generation layer with a wire bar and dried at 110 ° C. for 30 minutes under normal pressure to form a 20 m-thick charge transport layer to prepare a photoreceptor.
- a comparative photoconductor was prepared in the same manner as in Example 1 except that the metal complex No. 1 was omitted in Example 1.
- a photoconductor was prepared in the same manner as in Example 1 except that [0064] was used.
- a comparative photoconductor was prepared in the same manner as in Example 2 except that the metal complex No. 1 was omitted in Example 2.
- a photoconductor was prepared in the same manner as in Example 2 except that [0068] was used.
- a comparative photoconductor was prepared in the same manner as in Example 3 except that the metal complex No. 1 was omitted in Example 3.
- ⁇ -type metal-free phthalocyanine (charge generator No. 3) is used as a charge generator.
- metal complex No. 1 0.1 part as additive and the following hydrazone compound (charge transport agent No. 4)
- a comparative photoconductor was prepared in the same manner as in Example 4 except that the metal complex No. 1 was omitted in Example 4.
- Example 4 instead of using the charge transport agent No. 4, the following hydrazone compound (PR-36)
- a comparative photoreceptor was produced in the same manner as in Example 4 except that
- Example 4 instead of using the charge transfer agent No. 4, the hydrazone compound (PR—
- a comparative photoconductor was prepared in the same manner as in Example 4 except that 36) was used and the metal complex No. 1 was removed.
- a photoconductor was prepared in the same manner as in Example 2 except that the 1: 1 mass ratio mixture was used.
- a comparative photoconductor was prepared in the same manner as in Example 5 except that the metal complex No. 1 was omitted in Example 5.
- charge generator As a charge generator, the following bisazo pigment (charge generator No. 4)
- metal complex No. 1 0.1 part and the following stirilu compound as a charge transfer agent (charge transfer agent No. 7)
- a comparative photoconductor was prepared in the same manner as in Example 6 except that the metal complex No. 1 was omitted in Example 6.
- the photoconductors produced in Examples 1 to 5 and Comparative Examples 1 to 7 were evaluated for electrophotographic characteristics using a photosensitive drum characteristic measuring device (trade name "ELYSIA-II” manufactured by Trek Japan Co., Ltd.). .
- a photosensitive drum characteristic measuring device (trade name "ELYSIA-II” manufactured by Trek Japan Co., Ltd.).
- the photoconductor was subjected to corona discharge of 5.7 kV at a certain location, and then the charged potential V0 when the 701ux erase lamp was turned on was measured.
- image exposure was performed with monochromatic light of 780 nm-30 W, and the residual potential Vr was obtained.
- the charging potential V0 and the residual potential Vr after 1000 times of exposure from the above charging were measured. The results are shown in Table 2.
- Example 6 and Comparative Example 8 were subjected to electrophotographic characteristic evaluation using a photosensitive drum characteristic measuring device (trade name “EL YSIA-IIj Trek” Japan Co., Ltd.).
- the photoconductor was subjected to a 5. OkV corona discharge at a certain location, and then the charged potential VO was measured when the 701ux erase lamp was turned on, then the image exposure was exposed to 401ux white light, and the residual potential Vr was The charging power was measured for the charging potential VO and the residual potential Vr after 1000 exposures, and the results are shown in Table 3.
- the electrophotographic photoreceptor obtained in the present invention is useful as an electrophotographic photoreceptor capable of realizing high durability with a small residual potential and a small change in electrophotographic characteristics even in the initial stage.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN2007800034561A CN101375213B (zh) | 2006-01-23 | 2007-01-18 | 电子照相用感光体 |
US12/161,896 US8088540B2 (en) | 2006-01-23 | 2007-01-18 | Photoreceptor for electrophotography |
EP07707025A EP1978410A4 (en) | 2006-01-23 | 2007-01-18 | PHOTO RECEPTOR FOR ELECTROPHOTOGRAPHY |
JP2007554955A JP5096931B2 (ja) | 2006-01-23 | 2007-01-18 | 電子写真用感光体 |
KR1020087018167A KR101342850B1 (ko) | 2006-01-23 | 2008-07-23 | 전자 사진용 감광체 |
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JP2006014036 | 2006-01-23 | ||
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US (1) | US8088540B2 (ja) |
EP (1) | EP1978410A4 (ja) |
JP (1) | JP5096931B2 (ja) |
KR (1) | KR101342850B1 (ja) |
CN (1) | CN101375213B (ja) |
WO (1) | WO2007083714A1 (ja) |
Cited By (3)
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JP2011248375A (ja) * | 2005-12-02 | 2011-12-08 | Mitsubishi Chemicals Corp | 電子写真感光体、および画像形成装置 |
JP2014123113A (ja) * | 2012-11-20 | 2014-07-03 | Mitsubishi Chemicals Corp | 電子写真感光体、電子写真感光体カートリッジ、及び画像形成装置 |
JP2014123112A (ja) * | 2012-11-20 | 2014-07-03 | Mitsubishi Chemicals Corp | 電子写真感光体、電子写真感光体カートリッジ、及び画像形成装置 |
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US7684421B2 (en) * | 2005-06-09 | 2010-03-23 | Lockheed Martin Corporation | Information routing in a distributed environment |
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- 2007-01-18 EP EP07707025A patent/EP1978410A4/en not_active Withdrawn
- 2007-01-18 JP JP2007554955A patent/JP5096931B2/ja not_active Expired - Fee Related
- 2007-01-18 WO PCT/JP2007/050721 patent/WO2007083714A1/ja active Application Filing
- 2007-01-18 CN CN2007800034561A patent/CN101375213B/zh not_active Expired - Fee Related
- 2007-01-18 US US12/161,896 patent/US8088540B2/en not_active Expired - Fee Related
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2008
- 2008-07-23 KR KR1020087018167A patent/KR101342850B1/ko not_active IP Right Cessation
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JPS6444946A (en) | 1987-08-13 | 1989-02-17 | Konishiroku Photo Ind | Electrophotographic sensitive body |
JPH01118845A (ja) | 1987-11-02 | 1989-05-11 | Hitachi Chem Co Ltd | 電子写真感光体 |
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JP2011248375A (ja) * | 2005-12-02 | 2011-12-08 | Mitsubishi Chemicals Corp | 電子写真感光体、および画像形成装置 |
JP2014123113A (ja) * | 2012-11-20 | 2014-07-03 | Mitsubishi Chemicals Corp | 電子写真感光体、電子写真感光体カートリッジ、及び画像形成装置 |
JP2014123112A (ja) * | 2012-11-20 | 2014-07-03 | Mitsubishi Chemicals Corp | 電子写真感光体、電子写真感光体カートリッジ、及び画像形成装置 |
Also Published As
Publication number | Publication date |
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CN101375213B (zh) | 2013-02-20 |
JP5096931B2 (ja) | 2012-12-12 |
US20090011349A1 (en) | 2009-01-08 |
US8088540B2 (en) | 2012-01-03 |
EP1978410A1 (en) | 2008-10-08 |
KR101342850B1 (ko) | 2013-12-17 |
JPWO2007083714A1 (ja) | 2009-06-11 |
KR20080093030A (ko) | 2008-10-17 |
EP1978410A4 (en) | 2011-09-28 |
CN101375213A (zh) | 2009-02-25 |
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