Abstract: The present invention relates to an organic photoreceptor unit that has a conductive base unit, a charge generating layer formed on the conductive base unit, a first charge transport layer that is formed on the charge generating layer and contains a first bonding resin and a first charge transport material, and a second charge transport layer that is formed on the first charge transport layer and contains a second bonding resin including denatured polycarbonate resin, fluorine resin particles and a second charge transport material, wherein the content of the second charge transport material relative to the second bonding resin is larger than the content of the first charge transport material relative to the first bonding resin.

Abstract: An embodiment may be an organic photoreceptor, which comprises a conductive support; a photosensitive layer provided on the conductive support; and a surface layer containing a binder and a fluorine-containing resin fine particle having a number average primary particle diameter between about 0.02 ?m and about 0.20 ?m and a crystallinity of less than 90% and a binder resin; wherein a contact angle of the surface layer for water is 90° or more and a dispersion of the contact angle is within ±2.0°.

Abstract: The present invention relates to a photosensitive member for electrophotography which comprises a electroconductive support and one or more layers that include a photosensitive layer formed on the surface of the electroconductive support, wherein the outermost layer comprises binder resin, fluororesin particles A and fluororesin particles B.

Abstract: The present invention relates to a photosensitive member for electrophotography which comprises a electroconductive support and one or more layers that include a photosensitive layer formed on the surface of the electroconductive support, wherein the outermost layer comprises binder resin, fluororesin particles A and fluororesin particles B.

Abstract: The present invention relates to an organic photoreceptor unit that has a conductive base unit, a charge generating layer formed on the conductive base unit, a first charge transport layer that is formed on the charge generating layer and contains a first bonding resin and a first charge transport material, and a second charge transport layer that is formed on the first charge transport layer and contains a second bonding resin including denatured polycarbonate resin, fluorine resin particles and a second charge transport material, wherein the content of the second charge transport material relative to the second bonding resin is larger than the content of the first charge transport material relative to the first bonding resin.

Abstract: The present invention provides a photosensitive member for electrophotography which has excellent adhesion between a surface protective layer and a photosensitive layer as well as electrostatic properties, such as sensitivity and the like, and which prevents an occurrence of an image noise over a long period of time. The photosensitive member for electrophotography which comprises: (i) an electroconductive support, (ii) an organic photosensitive layer which comprises a charge generating material, a charge transporting material, and a binder resin, and (iii) a surface protective layer which comprises a thermosetting silicone resin, said surface protective layer being prepared by applying a coating solution comprising the thermosetting silicone resin and a solvent, which can dissolve the binder resin and has a boiling point of 60-130° C. and a solubility parameter of 8-11, onto the organic photosensitive layer and then curing the applied coating solution.

Abstract: The present invention provided a photosensitive member for electrophotography having excellent durability and adhesion between a surface protective layer and a photosensitive layer. In the photosensitive member for electrophotography wherein at least the photosensitive layer and the surface protective layer are laminated on an electroconductive support in this order, the characteristic is that said surface protective layer comprises at least polysiloxane and silyl group-containing vinyl resin.

Abstract: The present invention provides a photosensitive member for electrophotography which has an excellent adhesion between a surface protective layer and a photosensitive layer and an excellent image quality at the time of plate wearing. In the photosensitive member for electrophotography wherein at least the photosensitive layer and the surface protective layer are laminated on an electroconductive support in this order, the characteristic is that said surface protective layer comprises at least fluorine-containing polysiloxane, ultraviolet absorber and electroconductive fine particles.

Abstract: The present invention provides a photosensitive member for electrophotography which has excellent adhesion between a surface protective layer and a photosensitive layer as well as electrostatic properties, such as sensitivity and the like, and which prevents an occurrence of an image noise over a long period of time.

Abstract: An electrophotographic photosensitive member is provided which does not involve any image noise occurrence, such as black spot or white spot under any environment. The electrophotographic photosensitive member comprises a photoreceptor substrate including an anodized layer formed on the surface of an aluminum or aluminum alloy base, the anodized layer having been sealed by a low temperature sealing treatment and a high temperature sealing treatment, and at least one photosensitive layer formed on the photoreceptor substrate.

Abstract: The present invention relates to an improvement of a photosensitive member having a photosensitive layer which contains a specific amino compound as a charge transporting material.

Abstract: The present invention relates to a photosensitive member comprising a charge generating material, a charge transporting material, a binder resin and a specified electronattracting material, preferably further specified hindered phenol compound.

Abstract: A photosensitive member is disclosed, which comprises a photosensitive layer containing a fluorescent bleaching agent comprising a coumarin compound represented by the formula (I): ##STR1##

Abstract: The present invention relates to a photosensitive member comprising a specified distyryl compound as a charge transporting material. The specified distyryl compound may be used in combination with a specified silicone oil and a specified butyrated phenol.