摘要:
An electrophotographic photoreceptor using a non-contact type charging process has a creep value CIτ of is 2.70% or more, preferably 3.00% or more, and a Vickers hardness (HV) at its surface of 20≦HV≦25 in a case where a maximum indenting load of 30 mN is loaded to the surface under a circumstance at a temperature of 25° C. and at a relative humidity of 50%. Since such an electrophotographic photoreceptor is excellent in flexibility and has plasticity not too soft nor exhibiting fragility, the amount of film reduction due to wear is decreased during long time use, excellent surface smoothness is ensured, and there is no occurrence of injury or unevenness in density to the formed images.
摘要:
An electrophotographic photoconductor containing a conductive substrate and at least a charge generating layer and a charge transporting layer successively layered on the substrate, wherein the charge transporting layer contains a charge transporting material (M) and a binder resin (B) and further has a layered structure composed of a plurality of the charge transporting layers wherein the outermost layer of the charge transporting layers show 50% or higher elastic power (ηHu) and hardness (Hplast) of plastic deformation in a range from 220 N/mm2 or higher to 275 N/mm2 or lower.
摘要翻译:一种电子照相感光体,其含有导电性基板和至少具有电荷产生层和电荷输送层的电荷输送层,所述电荷输送层依次层叠在所述基板上,所述电荷输送层含有电荷输送材料(M)和粘合剂树脂(B),并且还具有层叠体 由多个电荷输送层构成的结构,其中电荷输送层的最外层显示出在220N / mm 2以上至275N以下的塑性变形的50%以上的弹性功率(η)和硬度(Hplast) / mm2以下。
摘要:
An electrophotographic photoreceptor is provided that in excellent in the electrical characteristics such as the charging property, the sensitivity and the responsiveness, the oxidizing gas resistance such as the ozone resistance and the nitrogen oxide resistance, and the electrical durability such that even after repetition use the foregoing excellent electrical characteristics are not deteriorated. A photosensitive layer of an electrophotographic photoreceptor contains an amine compound represented by the general formula (1).
摘要:
An electrophotographic photoreceptor is provided that in excellent in the electrical characteristics such as the charging property, the sensitivity and the responsiveness, the oxidizing gas resistance such as the ozone resistance and the nitrogen oxide resistance, and the electrical durability such that even after repetition use the foregoing excellent electrical characteristics are not deteriorated. A photosensitive layer of an electrophotographic photoreceptor contains an amine compound represented by the general formula (1).
摘要:
An image forming apparatus having excellent cleaning property for an electrophotographic photoreceptor and capable of forming a high-quality, high-resolution image. A surface free energy (γ) of a photoreceptor (2), which is provided in the image forming apparatus (1), is set to 20 to 35 mN/m. A volume average diameter of toner particles included in a developer stored in a developing unit (29) to develop an electrostatic latent image and form a toner image is set to 4-7 μm When γ of the photoreceptor (2) is set to within a small range as the particle size of toner is reduced, even small-particle-size toner having increased specific surface area and largely affected by a inter-molecular force is limited in adhesion to the surface of the photoreceptor (2) to provide a good cleaning property and a high-quality image can be formed.
摘要:
An object of the invention is to provide an image forming apparatus being excellent in cleaning property for an electrophotographic photoreceptor and capable of forming a high-quality, high-resolution image. A surface free energy (γ) of a photoreceptor (2) which is provided in the image forming apparatus (1) and is exposed to a light corresponding to image information for formation of an electrostatic latent image is set to 20 to 35 mN/m. A volume average diameter of a toner particles included in a developer stored in a developing unit (29) to develop an electrostatic latent image and form a toner image is set to 4-7 mum. When γ of the photoreceptor (2) is set to within a small range as the particle size of toner is reduced, even small-particle-size toner hence increased in specific surface area and largely affected by a inter-molecular force is limited in adhesion force to the surface of the photoreceptor (2) to provide a good cleaning property, whereby a cleaning property is enhanced and at the same time a high-quality image can be formed.
摘要翻译:本发明的目的是提供一种成像装置,它具有优异的电子照相感光体的清洁性能并能形成高质量,高分辨率的图像。 设置在图像形成装置(1)中并且对应于用于形成静电潜像的图像信息的光曝光的感光体(2)的表面自由能(γ)设定为20〜35mN / m 。 包含在存储在显影单元(29)中以显影静电潜像并形成调色剂图像的显影剂中的显影剂的体积平均直径设定为4-7μm。 当调色剂的粒径减小时,感光体(2)的γ值设定在小范围内时,即使是小粒径调色剂,因此比表面积增加,并且受分子间力的影响也受到限制 对感光体(2)的表面施加力以提供良好的清洁性能,从而提高清洁性能,同时可以形成高质量的图像。
摘要:
In an electrophotographic photoreceptor including a conductive substrate and a photoreceptive layer formed on the conductive substrate wherein the photoreceptive layer charged uniformly is exposed to light corresponding to an image information to form an electrostatic latent image, the surface free energy (γ) is determined to be at least 20 mN/m and at most 35 mN/m. The determination of γ on the surface of the photoreceptor 1 in the appropriate range makes it possible to suppress excessive adhesion of a toner to the surface of the photoreceptor, to suppress adhesion of foreign matters such as a paper powder and to make easy the separation thereof from the surface, which results in improving the cleanability of the photoreceptor. Since the image is formed with the photoreceptor 1 having always the clean surface, the damage or the decrease in image quality does not occur over a long period of time.
摘要:
An electrophotographic photoreceptor of excellent durability having high sensitivity and light responsiveness, not suffering from lowering of the electric characteristics by exposure to light, change of circumstance, or repetitive use, and excellent in the cleaning property and not suffering from lowering of the picture quality of formed images for a long times, in which an enamine compound represented by the general formula (1), for example, an enamine compound represented by the following structural formula (1-1) is incorporated in a photosensitive layer 14, and the surface energy (γ) on the surface of the photosensitive layer 14 is set to 20.0 mN/m or more and 35.0 mN/m or less, the electrophotographic photoreceptor 1:
摘要:
An electrophotographic photoconductor that is exposed by an exposure light source having a wavelength of 405±20 nm, the electrophotographic photoconductor comprising: a conductive substrate; and at least a charge generation layer and a charge transfer layer stacked in order on the conductive substrate, the charge transfer layer containing, as a charge transfer material, a phenylenediamine compound represented by the following general formula (I): wherein, Ar is an aryl group that may have a substituent, R1, R2 and R3 are a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, independently, k is an integer from 1 to 5 and l and m are an integer from 1 to 4, the charge generation layer containing a gallium phthalocyanine dimer as a charge generation material.
摘要:
A coating liquid for an undercoat layer of an electrophotographic photoreceptor which is formed by sequentially stacking the undercoat layer and a photosensitive layer on an electrically conductive support, wherein the coating liquid comprises titanium oxide microparticles and silicon nitride microparticles as an inorganic compound, a binder resin and an organic solvent.