JP2010002697A5 - - Google Patents

Claims (12)

  In an electrophotographic photosensitive member having a support, a charge generation layer containing a charge generation material provided on the support, and a charge transport layer containing a charge transport compound provided on the charge generation layer, An electrophotographic photoreceptor, wherein the charge transport layer contains a charge transport compound having an alkyl group having 6 to 10 carbon atoms and a polystyrene resin or a polyphenylene oxide resin. The electrophotographic photoreceptor according to claim 1, wherein the charge transport layer contains the charge transporting compound having an alkyl group having 6 to 10 carbon atoms and the polyphenylene oxide resin. The charge transporting compound having an alkyl group having 6 to 10 carbon atoms is, electrophotographic photosensitive member according to claim 1 or 2 which is a compound represented by the following general formula (1).

(In the formula (1), R _{1 to} R ₁₅ are each independently an alkyl group which may have a substituent, an aralkyl group which may have a substituent, or an aryl which may have a substituent. (However, at least one of R _{1 to} R ₁₅ represents an alkyl group having 6 to 10 carbon atoms.) The charge transporting compound having an alkyl group having 6 to 10 carbon atoms is, electrophotographic photosensitive member according to claim 1 or 2 which is a compound represented by the following general formula (2).

(Shown in the formula _(2), R 101 _{to R 128} is a hydrogen atom, an alkyl group which may have a substituent. In _addition, at least two R 101 _{to R 120} is alkyl of 6 to 10 carbon atoms (However, it does not have two or more alkyl groups having 6 to 10 carbon atoms on the same benzene ring. X has a structure selected from the following group.)
The charge transporting compound having an alkyl group having 6 to 10 carbon atoms is, electrophotographic photosensitive member according to claim 1 or 2 which is a compound represented by the following general formula (3).

(In the above formula (3), R _{201 to} R ₂₂₀ represent a hydrogen atom or an alkyl group which may have a substituent, and at least two are alkyl groups having 6 to 10 carbon atoms. However, the same benzene ring (It does not have two or more alkyl groups having 6 to 10 carbon atoms at the same time. Y has a structure selected from the following group.)

(The above R _{21 to} R ₂₃ represent a methyl group or an ethyl group.) The charge transporting compound having an alkyl group having 6 to 10 carbon atoms is, electrophotographic photosensitive member according to claim 1 or 2 which is a compound represented by the following general formula (4).

(In the above formula (4), at least one of R _{301 to} R ₃₁₀ is an alkyl group having 6 to 10 carbon atoms. Those that are not alkyl groups having 6 to 10 carbon atoms have a hydrogen atom and a substituent. An alkyl group which may be substituted, or an alkoxy group which may have a substituent, each of which may be bonded to each other to form an aromatic ring, and R ₃₁₁ is an aromatic which may have a substituent. The substituents that may be included are a methyl group, an ethyl group, a halogen group, an unsubstituted or dialkylamino group having a methyl group (the carbon number of the alkyl group is 2 or less), a benzylalkylamino group (of the alkyl group). The number of carbon atoms is 2 or less), a dibenzylamino group, an alkylarylamino group (the alkyl group has 2 or less carbon atoms) or a diarylamino group.) The electrophotographic photosensitive member according to any one of claims 1 to 6, wherein the charge transport layer further contains a compound represented by the following general formula (5).

(In Formula (5), R ₄₀₁ represents an alkyl group having 5 to 20 carbon atoms. R _{402 to} R ₄₀₆ each independently have a hydrogen atom, an alkoxy group, a hydroxyl group, a halogen group, an amino group, or a substituent. An alkyl group that may be substituted, an aralkyl group that may have a substituent, or an aryl group that may have a substituent. Z represents O, C═O, COO, or a single bond. The general formula (5) the electrophotographic photosensitive member of a compound having a structure according to any one of claims 1 to 7 is represented by the following general formula (6).

(In formula (6), R ₅₀₁ represents an alkyl group having 5 to 12 carbon atoms.) The electrophotographic photosensitive member according to any one of claims 1 to 8 further has a protective layer on the charge transport layer. The protective layer is cured by polymerizing or crosslinking the hole transporting compound having two or more chain polymerizable functional groups in the same molecule or the hole transporting compound using heat , light, or radiation . The electrophotographic photosensitive member according to claim 9, comprising at least one of compounds. An electrophotographic photosensitive member according to any one of claims 1 to 10, charging means for charging the electrophotographic photoreceptor, developing means for developing an electrophotographic photoreceptor formed of an electrostatic latent image with toner, Together with at least one means selected from the group consisting of a transfer means for transferring a toner image on the electrophotographic photosensitive member onto a transfer material and a cleaning means for recovering toner remaining on the electrophotographic photosensitive member after the transfer step. A process cartridge that is integrally supported and detachable from the electrophotographic apparatus body. The electrophotographic photosensitive member according to any one of claims 1 to 10, charging means for charging the electrophotographic photosensitive member, a developing means and electrophotographic developing the electrophotographic photoreceptor formed electrostatic latent image with toner An electrophotographic apparatus comprising transfer means for transferring a toner image on a photographic photosensitive member onto a transfer material.