摘要:
A surface layer of the electrophotographic photosensitive member has a change region in which a ratio of the number of carbon atoms with respect to the sum of the number of silicon atoms and the number of carbon atoms gradually increases toward a surface side of the electrophotographic photosensitive member from a photoconductive layer side, wherein the change region has an upper charge injection prohibiting portion containing a Group 13 atom, and a surface-side portion which is positioned closer to the surface side of the electrophotographic photosensitive member than the upper charge injection prohibiting portion and does not contain the Group 13 atom, and the distribution of the Group 13 atom in a boundary portion between the surface-side portion and the upper charge injection prohibiting portion is precipitous.
摘要:
Disclosed is an electrophotographic photosensitive body (2) comprising a conductive base (20), a photoconductive layer (22) formed on the conductive base (20) and containing an amorphous silicon, and a surface layer (23) formed on the photoconductive layer (22) and containing an amorphous silicon. Also disclosed is an image-forming device comprising such an electrophotographic photosensitive body (2). The photoconductive layer (22) has an average surface roughness Ra of not more than 10 nm in a 10 μm × 10 μm area. The surface layer (23) has an average surface roughness Ra of not more than 10 nm in a 10 μm × 10 μm area when it is not polished.
摘要:
The present invention provides: an electrophotographic photosensitive member which has a photoconductive layer, an intermediate layer and a surface layer, wherein when the Si+C atom density in the surface layer is represented by D S × 10 22 atoms /cm 3 , the D S is 6.60 or more, and when the maximal value of H/(Si+H) in a distribution of hydrogen quantity in the photoconductive layer in a layer thickness direction is represented by H Pmax , the average value of the H/(Si+H) in the second photoconductive region is represented by H P2 , the D S and the H P2 satisfy the following expression (1) and the D S and the H Pmax satisfy the following expression (2); and an electrophotographic apparatus having the electrophotographic photosensitive member. H P 2 ≥ 0.07 × D S - 0.38 H Pmax ≤ - 0.04 × D S + 0.60
摘要翻译:本发明提供:具有光电导层,中间层和表面层的电子照相感光构件,其中当表面层中的Si + C原子密度以DS×10 22原子/ cm 3表示时,DS为 6.60以上,并且当层厚方向的光导电层中的氢量分布中的H /(Si + H)的最大值由H Pmax表示时,H /(Si + H) 在第二光电导区域由H P2表示,DS和H P2满足以下表达式(1),并且DS和H Pmax满足以下表达式(2); 以及具有电子照相感光构件的电子照相设备。 H P ¢2‰¥0.07×D S - 0.38 H Pmax‰¤-0.04×D S + 0.60
摘要:
Provided are a negatively-chargeable electrophotographic photosensitive member which is free of any increase in residual potential and in which any pinholes due to insulation breakdown do not occur even under two-component development conditions that can satisfy such a high image quality as that required in the market of light printing, and an image forming process and an electrophotographic apparatus which make use of the same. The electrophotographic photosensitive member has, between its cylindrical substrate and photoconductive layer, a first lower-part layer formed of a non-single crystal material containing silicon atoms and a second lower-part layer formed of a non-single crystal material containing silicon atoms, and has, on its photoconductive layer, an upper-part layer formed of a non-single crystal material containing silicon atoms. The first lower-part layer is a layer containing a periodic-table Group 13 element, and the upper-part layer has a region capable of retaining electrification charges.
摘要:
In an electrophotographic photosensitive member having a photoconductive layer and, provided on the photoconductive layer, a surface layer constituted of a hydrogenated amorphous silicon carbide, the ratio of the number of atoms of carbon atoms (C) to the sum of the number of atoms of silicon atoms (Si) and number of atoms of carbon atoms (C), C/(Si+C), in the surface layer is from 0.61 or more to 0.75 or less, and the sum of atom density of the silicon atoms and atom density of the carbon atoms in the surface layer is 6.60×10 22 atom/cm 3 or more.
摘要翻译:在具有光电导层并且在光电导层上设置由氢化非晶碳化硅构成的表面层的电子照相感光构件中,碳原子数(C)与原子数之和的比例 表面层中的硅原子(Si)和碳原子数(C),C /(Si + C)的含量为0.61以上至0.75以下,硅原子和原子的原子密度之和 表面层中的碳原子的密度为6.60×10 22原子/ cm 3以上。
摘要:
A negative-charging electrophotographic photosensitive member comprising an aluminum-based substrate and a silicate film and a light-receiving layer in this order. The silicate film has a layer thickness of 0.5 nm to 15 nm and comprises at least aluminum atoms, silicon atoms and oxygen atoms. The light-receiving layer has at least a lower-part charge injection blocking layer formed of a non-single crystal silicon film comprising at least silicon atoms, nitrogen atoms and oxygen atoms, not doped with any impurities, a photoconductive layer formed of a non-single crystal silicon film comprising at least silicon atoms, an upper-part charge injection blocking layer formed of a non-single crystal silicon film comprising at least silicon atoms, carbon atoms and atoms belonging to the Group 13 of the periodic table, and a surface protective layer formed of a non-single crystal silicon film comprising at least silicon atoms and containing carbon atoms.
摘要:
To form a sharp image free from image flow or fog with an electrophotographic apparatus which uses an a-Si photo-sensitive drum charged uniformly by having resort to the discharge phenomenon, the electrophotographic apparatus comprises an electrophotographic photo-sensitive drum having a surface (1c, 1c1, 1c2) being represented by the elementary ratio composition formula a-Si 1-x C x :H, with 0.95 ≤ x 2 or below, the hardness of said surface layer being higher on the inner side towards said photoconductive layer than on the outer surface side, preferably being gradually increasing as one goes from the outer surface side toward the inner side, at said photoelectric layer, and a developing unit (4) using a developer composed of carrier and toner particles being caused to rub the drum surface and being recovered in a developer vessel (41). The temperature of said photosensitive drum surface with respect to said developer vessel is held in a range of 0 to +10°C. The developer used for the development contains a conductive abrasive having a volume resistivity ranging from 10 2 to 10 10 Ω·cm. The peripheral speed of a transfer roller (5) is set to be slightly higher than the peripheral speed of the drum.
摘要:
To form a sharp image free from image flow or fog with an electrophotographic apparatus which uses an a-Si photo-sensitive drum charged uniformly by having resort to the discharge phenomenon, the electrophotographic apparatus comprises an electrophotographic photo-sensitive drum having a surface (1c, 1c1, 1c2) being represented by the elementary ratio composition formula a-Si 1-x C x :H, with 0.95 ≤ x 2 or below, the hardness of said surface layer being higher on the inner side towards said photoconductive layer than on the outer surface side, preferably being gradually increasing as one goes from the outer surface side toward the inner side, at said photoelectric layer, and a developing unit (4) using a developer composed of carrier and toner particles being caused to rub the drum surface and being recovered in a developer vessel (41). The temperature of said photosensitive drum surface with respect to said developer vessel is held in a range of 0 to +10°C. The developer used for the development contains a conductive abrasive having a volume resistivity ranging from 10 2 to 10 10 Ω·cm. The peripheral speed of a transfer roller (5) is set to be slightly higher than the peripheral speed of the drum.
摘要:
A process for producing a light-receiving member comprising a substrate and a non-monocrystalline light-receiving layer provided on the substrate, which comprises forming at least a part of the light-receiving layer by decomposing a starting material gas introducing into a reaction chamber by means of an electromagnetic wave with a frequency of from 20 MHz to 450 MHz.
摘要:
A light receiving member having a light receiving layer comprising a photoconductive layer and a surface layer disposed on a conductive substrate, wherein the photoconductive layer comprises, from the side of the substrate, a first photoconductive layer constituted by an amorphous material containing silicon atoms as a matrix, carbon atoms, hydrogen atoms and fluorine atoms, and a second photoconductive layer constituted by an amorphous material containing silicon atoms as a matrix, and at least one kind of atoms selected from hydrogen atoms and fluorine atoms, wherein the content of said fluorine atoms in the first photoconductive layer is from 1 to 95 atomic ppm based on the content of said silicon atoms.