Patent application number | Description | Published |
20100021835 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides an electrophotographic photosensitive member in which a photoconductive layer is an amorphous layer that contains a silicon atom as a main component, and a surface layer contains an aluminum atom, a zinc atom and an oxygen atom so as to satisfy Expression (1) and Expression (2): | 01-28-2010 |
20100021836 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - 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 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 | 01-28-2010 |
20100021837 | METHOD FOR MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - The present invention provides a method for manufacturing an electrophotographic photosensitive member including: forming a first surface layer and a second surface layer of the electrophotographic photosensitive member by supplying a source gas into a reaction vessel so that C | 01-28-2010 |
20110117484 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member includes a photoconductive layer, an intermediate layer, and a surface layer. When Si+C atom density in the surface layer is represented by D | 05-19-2011 |
20110123215 | ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic apparatus which has an electrophotographic photosensitive member having a surface layer constituted of an amorphous silicon carbide, wherein the ratio of the atom density (C) of carbon atoms to the sum of the atom density (Si) of silicon atoms and the atom density (C) of carbon atoms, C/(Si+C), in the surface layer is set larger from one end portion toward the other end portion of the electrophotographic photosensitive member in the direction of rotational axis thereof, and is from 0.61 or more to 0.75 or less in the whole region of the electrophotographic photosensitive member in the direction of rotational axis thereof and the electrophotographic apparatus has an air current generation means which draws out air from the side of the above one end portion toward the side of the above other end portion. | 05-26-2011 |
20110123914 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides an electrophotographic photosensitive member including a photoconductive layer, an intermediate layer made of hydrogenated amorphous silicon carbide on the photoconductive layer, and a surface layer made of hydrogenated amorphous silicon carbide on the intermediate layer, wherein a ratio (C/(Si+C); C2) in the surface layer is 0.61 to 0.75, and a sum of atom density of silicon and carbon is 6.60×10 | 05-26-2011 |
20110123915 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - The invention is an electrophotographic photosensitive member comprising a substrate, a photoconductive layer, an intermediate layer and a surface layer sequentially formed, wherein the intermediate contains silicon, carbon and hydrogen, a distribution of a hydrogen ratio which is a ratio of the number of hydrogen to the number of silicon, carbon and hydrogen in the intermediate has a maximum region, a largest hydrogen ratio in the intermediate is larger than a hydrogen ratio in the surface, the hydrogen ratio in the surface is 0.30 to 0.45, a distribution of a carbon ratio which is a ratio of the number of carbon to the number of silicon and carbon in the intermediate has a maximum and a minimum region, a carbon maximum region is 0.53 to 0.63, a carbon minimum region is 0.47 or more, and the maximum hydrogen region in the intermediate is partially superimposed on the minimum carbon region. | 05-26-2011 |
20110129776 | IMAGE-FORMING METHOD - An image-forming method is provided which enable high-quality images to be formed over a long time period. In the image-forming method, an electrophotographic photosensitive member is used having a surface layer formed of a hydrogenated amorphous silicon carbide in which a ratio of the number of carbon atoms to the sum of the number of silicon atoms and the number of the carbon atoms in the surface layer is 0.61 or more and 0.75 or less, and the sum of the atomic density of the silicon atoms and the atomic density of the carbon atoms in the surface layer is 6.60×10 | 06-02-2011 |
20130077987 | ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic apparatus suppresses the unevenness of image density, even though the electrophotographic apparatus has no heater for an electrophotographic photosensitive member. The electrophotographic photosensitive member is arranged in the electrophotographic apparatus so that when the electrophotographic photosensitive member is equally divided into two regions in a cylindrical shaft direction, absolute values of a temperature dependence of photosensitive-member characteristics in the two regions are not the same, and when a region out of the two regions which has a smaller absolute value of the temperature dependence of the photosensitive-member characteristics is defined as a first region, and a region which has a larger absolute value of the temperature dependence of the photosensitive-member characteristics is defined as a second region, the change of a surface temperature of the first region becomes larger than the change of a surface temperature of the second region when an image is formed by the apparatus. | 03-28-2013 |
20130114975 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - 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 | 05-09-2013 |
20140349226 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - Provided is an electrophotographic photosensitive member that improves the sensitivity characteristic and high-humidity deletion resistance, and achieves compatibility between a high image-resolving power and the suppression of an image memory. The electrophotographic photosensitive member comprises an electrophotographic photosensitive member, including: a photoconductive layer; and a surface layer comprising hydrogenated amorphous silicon carbide on the photoconductive layer, in which: a ratio (C/(Si+C)) of a number of carbon atoms (C) to a sum of a number of silicon atoms (Si) and the number of the carbon atoms (C) in the surface layer is 0.50 or more and 0.65 or less; a sum of an atom density of the silicon atoms and an atom density of the carbon atoms in the surface layer is 6.60×10 | 11-27-2014 |