Patent application number | Description | Published |
20120065284 | METHOD OF PRODUCING POROUS POLYMER FILM AND POROUS POLYMER FILM PRODUCED BY THE METHOD - A porosity is freely controlled in preparation of a porous polymer film by a phase separation method. A solvent absorption sheet is used for a solvent in a polymer solution so that the coating film of the polymer solution may be covered with the sheet. After that, the solvent in the film is selectively removed. Then, the resultant is immersed in a poor solvent. Thus, a porous polymer film can be produced. | 03-15-2012 |
20140017605 | FILM, APPARATUS HAVING FILM, ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - There is provided a film having resistance to an increase in the friction coefficient resulting from wearing. The film has a first portion having hardness of 0.01 to 3 GPa and a second portion. The hardness ratio of the second portion to the first portion is of 1.2 to 30. The first portion and the second portion form a first surface portion and a second surface region of the film, respectively. Each of the first portion and the second portion extends to a depth of 75% or more of the thickness of the film. In a 1 mm×1 mm square region disposed on an arbitrary position of the surface of the film, the second surface region accounts for 10% to 80% by area of the square region, and the first surface region and the second surface region account for 50% or more by area of the square region. | 01-16-2014 |
20140051018 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention relates to an electrophotographic photosensitive member including a support and a photosensitive layer formed on the support. The electrophotographic photosensitive member has a surface layer containing a polyarylate resin and acicular inorganic fillers. The acicular inorganic fillers are basic and have a number-average aspect ratio of 5 to 50 and a Mohs hardness of 2 to 6. | 02-20-2014 |
20140113225 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, INTERMEDIATE TRANSFER MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - There are provided an electrophotographic photosensitive member and an intermediate transfer member each having good lubricity and good cleaning property on its surface, a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member, and an electrophotographic apparatus including the intermediate transfer member. Therefore, a surface layer of the electrophotographic photosensitive member or intermediate transfer member of the present invention contains a matrix component and a rotatably-retained spherical particle that is not bound with the matrix component and is rotatably retained in a pore in the matrix component. | 04-24-2014 |
20140315124 | METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF PRODUCING ORGANIC DEVICE, AND EMULSION FOR CHARGE TRANSPORTING LAYER - Provided are a method of producing an electrophotographic photosensitive member, particularly, a method of producing an electrophotographic photosensitive member and an organic device by which, in a method of forming a charge transporting layer, the stability of an application liquid for the layer after long-term storage is improved while the usage of an organic solvent in the application liquid is curtailed, and the layer having high uniformity is formed. The method is a method of producing an electrophotographic photosensitive member which includes a support and a charge transporting layer formed thereon, the method including: preparing a solution including: a first liquid whose solubility in water under 25° C. and 1 atmosphere is 1.0 mass % or less; a second liquid whose solubility in water under 25° C. and 1 atmosphere is 5.0 mass % or more; a charge transporting substance; and a binder resin; preparing an emulsion by dispersing the solution in water; forming a coat for the layer on the support by using the emulsion; and forming the layer by heating of the coat. | 10-23-2014 |
20140322434 | METHODS FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ORGANIC DEVICE EACH HAVING CHARGE TRANSPORTING LAYER - A method for producing an electrophotographic photosensitive member has a charge transporting layer, including preparing a first solution containing a specified first liquid, a charge transporting substance and a binder resin, preparing a second solution containing a specified second liquid and water, preparing an emulsion from the first and second solutions, forming the emulsion coating, and heating the coat to form the charge transporting layer, and a method for producing an organic device has a charge transporting layer, including preparing a first solution containing a specified first liquid and a charge transporting substance, preparing a second solution containing a specified second liquid and water, preparing an emulsion from the first and second solutions, forming the emulsion coating, and heating the coat to form the charge transporting layer are used. | 10-30-2014 |
20140342285 | PROCESS FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - In a process for producing an electrophotographic photosensitive member, in particular, a process of forming a charge transporting layer, a production process is provided by which the stability of a charge transporting layer coating fluid even after its storage for a long time is improved so as to form a coat for a charge transporting layer having a high uniformity. In a process for producing an electrophotographic photosensitive member having a charge transporting layer on a support, a production process is used in which a coat of (i) a liquid dispersion comprised of particles containing a charge transporting material, particles containing a binder resin, and an aqueous dispersion medium, or (ii) a liquid dispersion comprised of particles containing both a charge transporting material and a binder resin, and an aqueous dispersion medium, is formed on the support and then the coat is heated at a temperature not less than the melting point of the charge transporting material to form the charge transporting layer. | 11-20-2014 |