摘要:
An electrophotographic photosensitive member has a support, a charge generation layer containing a charge-generating material and a binder resin, provided on the support, and a hole transport layer containing a hole-transporting material, provided on the charge generation layer. The charge generation layer contains a phenanthrene compound having a structure represented by the following formula (2): wherein Z201 and Z202 each independently represent an oxygen atom, a ═C(CN)2 group or a ═N-Ph group; R201 represents a hydrogen atom, a halogen atom, a nitro group, a substituted or unsubstituted alkyl group or a substituted or unsubstituted alkoxy group; and R202 represents a halogen-atom-substituted alkyl group.
摘要翻译:电子照相感光构件具有载体,设置在载体上的含有电荷产生材料和粘合剂树脂的电荷产生层和设置在电荷产生层上的含有空穴传输材料的空穴传输层。 电荷产生层含有具有由下式(2)表示的结构的菲化合物:其中Z201和Z202各自独立地表示氧原子,= C(CN)2基团或= N-Ph基团; R 201表示氢原子,卤素原子,硝基,取代或未取代的烷基或取代或未取代的烷氧基; R202表示卤素原子取代的烷基。
摘要:
An electrophotographic photosensitive member includes a conductive layer, an intermediate layer and a photosensitive layer in this order on a substrate, in which the conductive layer contains a binder resin and conductive particles. The conductive particles are TiO2 particles coated with oxygen-deficient SnO2, the conductive particles have an average particle size of 0.2 to 0.6 μm and the conductive layer has a volume resistivity of 5×105 to 8×108 Ω·cm. Also this invention provides a process cartridge and an electrophotographic apparatus equipped with such electrophotographic photosensitive member.
摘要:
An electrophotographic photosensitive member includes a conductive layer, an intermediate layer and a photosensitive layer in this order on a substrate, in which the conductive layer contains a binder resin and conductive particles. The conductive particles are TiO2 particles coated with oxygen-deficient SnO2, the conductive particles have an average particle size of 0.2 to 0.6 μm and the conductive layer has a volume resistivity of 5×105 to 8×108 Ωcm. Also this invention provides a process cartridge and an electrophotographic apparatus equipped with such electrophotographic photosensitive member.
摘要:
A toner exhibits excellent image characteristics, and also has an excellent charging property even if the toner is used in a cleaning-simultaneous-with-developing system having a direct injection charging mechanism. The toner includes toner particles and non-magnetic metallic-compound fine particles. The weight average particle diameter of the toner is 3.0 μm to 12.0 μm. The metallic-compound fine particles are conductive metallic-compound fine particles having a specific surface area (cm2/cm3) of 5×105 to 100×105; a medium diameter (D50) of 0.4 μm to 4.0 μm with respect to a volume-based particle diameter distribution, the medium diameter (D50) being smaller than the weight average particle diameter of the toner; and a 90% particle diameter D90 of 6.0 μm or less with respect to a volume-based particle diameter.
摘要:
A toner exhibits excellent image characteristics, and also has an excellent charging property even if the toner is used in a cleaning-simultaneous-with-developing system having a direct injection charging mechanism. The toner includes toner particles and non-magnetic metallic-compound fine particles. The weight average particle diameter of the toner is 3.0 μm to 12.0 μm. The metallic-compound fine particles are conductive metallic-compound fine particles having a specific surface area (cm2/cm3) of 5×105 to 100×105; a medium diameter (D50) of 0.4 μm to 4.0 μm with respect to a volume-based particle diameter distribution, the medium diameter (D50) being smaller than the weight average particle diameter of the toner; and a 90% particle diameter D90 of 6.0 μm or less with respect to a volume-based particle diameter.
摘要:
An electrophotographic photosensitive member having a charge generation layer containing a phenanthrene compound, a phenanthroline compound or an acenaphthene compound. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member.
摘要:
An electrophotographic photosensitive member superior in dot reproducibility and a process cartridge and an process cartridge having the electrophotographic photosensitive member are provided. Where in a light attenuation curve drawn in a way in which the surface of the electrophotographic photosensitive member is so charged that intensity of an electric field is 15 (V/μm) to establish the surface potential of the electrophotographic photosensitive member into a given value E(V) and then exposed to light under conditions that the electrophotographic photosensitive member has a surface potential of 0.8 E(V) at a time point T(ms) passes after exposure starts, the inclination of the light attenuation curve at a time point T(ms) passes after exposure starts is represented by m, and in a dark-time surface potential attenuation curve drawn in a way in which the surface of the electrophotographic photosensitive member is charged under conditions that the electrophotographic photosensitive member has a surface potential of 0.8 E(V) at a time point T(ms) passes after charging is finished and thereafter no exposure is performed, the inclination of the dark-time surface potential attenuation curve at a time point T(ms) passes after charging is finished is represented by m′, the m and m′ satisfy |m−m′|≦0.020, provided that T=[{d2/(μ×E)}×100]×10−5, where d is the layer thickness (μm) of the charge transport layer and μ is the drift mobility [cm2/(V·s)] of the charge transport layer.
摘要:
A toner exhibits excellent image characteristics, and also has an excellent charging property even if the toner is used in a cleaning-simultaneous-with-developing system having a direct injection charging mechanism. The toner includes toner particles and non-magnetic metallic-compound fine particles. The weight average particle diameter of the toner is 3.0 μm to 12.0 μm. The metallic-compound fine particles are conductive metallic-compound fine particles having a specific surface area (cm2/cm3) of 5×105 to 100×105; a medium diameter (D50) of 0.4 μm to 4.0 μm with respect to a volume-based particle diameter distribution, the medium diameter (D50) being smaller than the weight average particle diameter of the toner; and a 90% particle diameter D90 of 6.0 μm or less with respect to a volume-based particle diameter.
摘要:
A phenolic compound having a plurality of substituted hydroxyphenyl groups and charge-transportable structure, the substituted hydroxyphenyl groups of which have a hydroxymethyl group; and a resol resin obtained by allowing a phenolic compound having hydroxyphenyl groups and charge-transportable structure, to react with formaldehyde in the presence of a basic catalyst, and having charge-transportable structure. Also disclosed are a cured product and an electrophotographic photosensitive member which make use of the above, and a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member.
摘要:
An electrophotographic photosensitive member exhibiting a good durability and stable electrophotographic performances regardless of environmental change is provided by coating the photosensitive layer with a specific protective layer. The protective layer comprises a cured phenolic resin and a charge-transporting compound having at least one group selected from the group consisting of hydroxyalkyl groups, hydroxyalkoxy groups and hydroxyphenyl groups capable of having a substituent.