摘要:
An image forming apparatus includes an image bearing member on which a latent image corresponding to image information is formed, a developing device for developing the latent image on said image bearing member with a developer including carrier and toner, a supplying device for supplying a developer to the developing device, a detector for detecting information corresponding to the magnetic permeability of the developer, and a selecting device for selecting modes on the basis of the information detected by the detecting device, wherein the selecting device can select a first control mode that controls the amount of the developer which is supplied to the developing device by the supplying device on the basis of the information detected by the detector, and a second control mode that controls the amount of the developer which is supplied to the developing device by the supplying device on the basis of the image information.
摘要:
An image forming apparatus is provided with a function for forming an image on a recording medium such, as a sheet or the like. The image forming apparatus includes an image forming unit for forming an image on a recording material including an image bearing member. A developing unit develops an electrostatic image formed on the image bearing member by a developer. A density detection unit detects a developer density inside the developing unit. The density detection unit detects a parameter relating to physical property of the developer based on a previous detection value detected by the density detection unit during a previous image forming drive operation by the image forming unit and before the previous image forming drive operation stops. The detection unit also detects a next detection value detected by the density detecting unit after the previous image forming drive operation stops and before a next image forming drive operation by the image forming unit starts. Accordingly, the image forming condition of the next image forming drive operation is controlled to be variable by a control unit based on the detection values.
摘要:
An objective is to provide a carrier exhibiting stable charge providing ability in which sufficient charge can be provided to toner having a small particle diameter, and no image contamination such as fog caused by toner scattering via lack of electrification is generated. Another objective is to provide a carrier capable of maintaining a charging level of no interference for image formation even under the image forming condition at which a charging level for printing a number of prints continuously is difficult to be maintained. Disclosed is a carrier comprising a core particle made of ferrite possessing Mg and coated thereon, a resin, wherein the core particle has a ratio of the number of irregular-shaped core particles of at most 5%, based on the total number of core particles, and a surface of the core particle has grains having a maximum grain diameter of 2-5 μm.
摘要:
A metal material (10), having an electrical conductive substrate 1; a surface layer 2 having tin or tin alloy formed on the electrical conductive substrate 1; and an organic coating 3 formed on the surface layer 2, organic coating 3 being formed with an organic compound including an ether linking group.
摘要:
A metallic material for a connector, having a base material of a bar material or a rectangular wire material formed of copper or a copper alloy, in which a striped copper-tin alloy layer is formed in the longitudinal direction of the metallic material on a part of the surface of the metallic material, and in which a tin layer or a tin alloy layer is formed on the remaining part of the surface of the metallic material; and, a method of producing a metallic material for a connector, containing: providing a bar material or a rectangular wire material of copper or a copper alloy as a base material; forming a tin plating layer or a tin alloy plating layer on the base material, to obtain an intermediate material; and subjecting the intermediate material to reflow treatment in a stripe form in the longitudinal direction of the intermediate material.
摘要:
A silver-coated material for a movable contact component is provided, in which a conductive base member (1) composed of iron or an iron alloy is coated with an underlayer (2) composed of nickel or a nickel alloy of 0.005 to 0.5 μm thick, the underlayer (2) is coated with an intermediate layer (3) composed of palladium, a palladium alloy or a silver tin alloy of 0.01 to 0.5 μm thick and the intermediate layer (3) is coated with an outermost surface layer (4) composed of silver or a silver alloy.
摘要:
A method is provided of manufacturing semiconductor devices formed on a semiconductor wafer, including placing the wafer in a semiconductor container and conveying the container to a semiconductor manufacturing apparatus. An opening of the container is opposed to an opening of the apparatus such that an opener of the apparatus holds a lid of the opening the container. A key of the opener is inserted to a latch groove of the lid, and the key is rotated to contact a latch of the lid. The openings are connected such that a velocity differential pressure ratio obtained by dividing the maximum velocity when the opener holding the lid horizontally moves away from the opening of the container, by the differential pressure between the inside pressure and the outside pressure of the apparatus, is set to be 0.06 ((m/s)/Pa) or less, and then the wafer is processed.
摘要:
A sealed type container accommodating a semiconductor substrate is positioned to a load port of a semiconductor manufacturing apparatus. The semiconductor substrate is taken out of the container. An ionizer is used for static-eliminating the semiconductor substrates before and after process treatment in a transport area between the load port and a treatment section. The static-eliminated semiconductor substrate is accommodated in the container positioned to the load port. Thus, it is possible to decrease foreign materials adhering to the semiconductor substrate and errors in handling the semiconductor substrate.
摘要:
When a conventional semiconductor container opening/closing apparatus opens a lid of a semiconductor container, foreign particles enter into the container from outside through a gap between the container and a wall surface of the container opening/closing apparatus and adhere to a wafer in the container. An apparatus is provided to reduce the number of foreign particles adhering to the wafer by preventing foreign particles from entering into the container at the time of opening the container by the opening/closing apparatus. To achieve this, a velocity-differential pressure ratio obtained by dividing the maximum velocity at the time of opening the lid of the container in a vertical direction to an opening of the container, by the differential pressure between the inside pressure and the outside pressure of said semiconductor manufacturing apparatus, is set to be 0.06 ((m/s) Pa) or less.
摘要:
When a conventional semiconductor container opening/closing apparatus opens a lid of a semiconductor container, foreign particles enter into the container from outside through a gap between the container and a wall surface of the container opening/closing apparatus and adhere to a wafer in the container. A method is provided to reduce the number of foreign particles adhering to the wafer by preventing foreign particles from entering into the container at the time of opening the container by the opening/closing apparatus. To achieve this, a velocity-differential pressure ratio obtained by dividing the maximum velocity at the time of opening the lid of the container in a vertical direction to an opening of the container, by the differential pressure between the inside pressure and the outside pressure of said semiconductor manufacturing apparatus, is set to be 0.06 ((m/s) Pa) or less.