Abstract:
An electrophotographic photoconductor has a support medium, an undercoat layer formed immediately on the support medium, and a photosensitive layer formed immediately on the undercoat layer, in which the undercoat layer contains a binding resin and composite particles each containing a core material particle covered with tin oxide doped with a predetermined amount of aluminum.
Abstract:
Provided is an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on the conductive substrate, wherein an uppermost surface layer thereof is constituted with a cured film of a composition that contains at least two kinds of reactive charge transporting materials selected from a first reactive charge transporting material having an —OH group as a reactive functional group and a second reactive charge transporting material having an —OCH3 group as a reactive functional group, fluororesin particles, and an alkyl fluoride group-containing copolymer having repeating units represented by the following Structural Formulae A and B, and a relative dielectric constant ∈r of the uppermost surface layer satisfies the following Formula (1):
Abstract:
Provided is a compound represented by the following Formula (I): wherein in Formula (I), F represents a charge transporting skeleton, L represents a divalent linking group including a —(CH2)n—O— group, m represents an integer of from 1 to 8, and n represents an integer of from 3 to 6.
Abstract:
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: A=(S1/S13)−(S0/S03) Equation (1) B=S2/S23 Equation (2).
Abstract:
An electrophotographic photoreceptor includes a cylindrical conductive substrate that has a thickness of from 0.4 mm to 0.6 mm and a Young's modulus of from 20 GPa to 80 GPa, and a photosensitive layer that is provided on the conductive substrate, wherein an elastic deformation ratio of a layer forming the outermost surface is from 0.35% to 0.47%.
Abstract:
An electrophotographic photosensitive member includes a photosensitive layer that contains a charge generating material, a hole transport material, a binder resin, and a plasticizer. The hole transport material contains a triarylamine derivative represented by General Formula (1) below. The plasticizer contains at least one of a compound represented by General Formula (2a) and a compound represented by General Formula (2b) below.
Abstract:
According to aspects of the present invention, an electrophotographic photosensitive member includes a surface layer comprising a cured resin obtained by polymerizing a compound having at least one polymerizable functional group. Aspects of the present invention provide an electrophotographic photosensitive member whose surface layer comprises a compound (urea derivative) having a certain structure, a method for producing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus including the electrophotographic photosensitive member.
Abstract:
A photoreceptor includes a substrate a charge generating layer disposed on the substrate and a charge transport layer disposed on the charge generating layer, the charge transport layer includes a hole transport molecule, a fluorinated diol, and a leveling agent, the charge transport layer is substantially free of a polymer binder and catalyst, and has a post-discharge voltage of less than about 10 volts.
Abstract:
A charge transport material having reduced photodeterioration is disclosed to be an ethylene compound having an ethylene double bond site, having a structure in which four different substituents are substituted at the ethylene double bond site, and having general formula (I) below where R1, R2 and R3 are each independently a hydrogen atom, a halogen atom, an alkyl group of 1 to 6 carbons or an alkoxyl group of 1 to 6 carbons; R4 is phenyl or tolyl; and Ar is one group selected from the group consisting of naphthyl, biphenyl, anthryl, xylyl, and phenanthryl. An electrophotographic photoreceptor and process for producing the electrophotographic photoreceptor also are disclosed. The electrophotographic photoreceptor includes a conductive substrate; and a photosensitive layer provided on the conductive substrate that includes the charge transport material.
Abstract translation:公开了具有降低的光致变化的电荷传输材料,其是具有乙烯双键位点的乙烯化合物,其具有在乙烯双键位置上被四个不同取代基取代的结构,并且具有以下通式(I),其中R1,R2 R 3各自独立地为氢原子,卤素原子,碳原子数为1〜6的烷基或碳原子数为1〜6的烷氧基。 R4是苯基或甲苯基; Ar是选自萘基,联苯基,蒽基,二甲苯基和菲基的一个基团。 还公开了一种电子照相感光体和用于制造电子照相感光体的方法。 电子照相感光体包括导电性基板; 以及设置在包括电荷输送材料的导电性基板上的感光层。
Abstract:
An electrophotographic photoconductor including: an electroconductive substrate; an intermediate layer; and a photoconductive layer, the intermediate layer and the photoconductive layer being on the electroconductive substrate, wherein the intermediate layer includes an inorganic pigment and a binder resin, wherein a volume ratio of the inorganic pigment in the intermediate layer is 30% by volume to 50% by volume, wherein the inorganic pigment comprises titanium oxide and a content of the titanium oxide in the inorganic pigment is 70% by mass to 90% by mass, wherein the inorganic pigment has a specific surface area of 70 m2/g to 140 m2/g, and wherein the intermediate layer has a volume resistivity at an electrical field intensity of 2.5×105 V/cm of 5×1011 Ω·cm to 1×1013 Ω·cm.