Abstract: There is provided an axial gap electronic motor capable of decreasing cogging torque and thus decreasing vibrations and noise. A stator of the motor has a magnetic force generating section 21 in which a plurality of stator iron cores 24 are arranged in a ring shape, and teeth 25 of each of the stator iron cores 24 are provided with a skew 26 inclined through a predetermined angle with respect to the radial direction of the rotors 31, 32.

Abstract: A developer carrier used for an SLIC developing system. Characteristic values contributing to provide high image quality, which cannot be covered by the stipulations of the attenuation ratio and half-value width of the flux density are clarified. The developer carrier is constituted to be composed of the developing sleeve for carrying and transporting the developer, and a magnetic roll disposed in the developing sleeve, having a plurality of magnetic poles P1-P5. A narrow nip for development is realized by narrowing the width of the pole for development P1 forming the magnet brush by raising the developer in the developing region facing the latent image carrier, and by narrowing the rising region of the developer in the developing region and the flux density attenuation ratio of the pole for development P1 is 40% or more. The half-value width of the flux density of the pole for development P1 is 22% or less, and the flux density variation rate is 4.

Abstract: A radial-air-gap induction motor is constituted so as to have two air gaps by setting a rotor between a cylindrical outer stator and inner stator in order to improve an efficiency by increasing the ratio of torque/(square of current) by a two air gaps, apply windings for generating a rotating magnetic field to the outer and inner stators, and form squirrel-cage windings on the rotor.

Abstract: In an axial-air-gap induction motor which has a disk-shaped stator and rotor placed coaxially around a rotating shaft with their surfaces opposing each other across a predetermined gap, the stator and rotor are each composed of a disk-shaped yoke and teeth fitted and secured in the yoke, making it easy to fasten the stator to the bracket, and the rotor to the rotating shaft, as well as to mount windings in the stator core and rotor core.

Abstract: A semiconductor device for charge-up damage evaluation and an evaluation method for the same are provided which permit to detect charge-up damage caused by static electricity. There are provided a silicon substrate 9, a first insulation film 10 formed on the silicon substrate 9, a first conductive layer 6 formed on the first insulation film 10 and connected to the silicon substrate 9, a second insulation film 11 formed on the first conductive layer 6, a second conductive layer 8 formed on the second insulation film 11 and serving as an antenna, and a third insulation film 12 formed on the second conductive layer 8.

Abstract: In an axial-air-gap induction motor which has a disk-shaped stator and rotor placed coaxially around a rotating shaft with their surfaces opposing each other across a predetermined gap, the stator and rotor are each composed of a disk-shaped yoke and teeth fitted and secured in the yoke, making it easy to fasten the stator to the bracket, and the rotor to the rotating shaft, as well as to mount windings in the stator core and rotor core.

Abstract: A radial-air-gap induction motor is constituted so as to have a tow-layer air gap by setting a rotor between a cylindrical outer stator and inner stator in order to improve an efficiency by increasing the ratio of torque/(square of current) by a two-layer air-gap structure, apply a winding for generating a rotating magnetic field to the outer and inner stators, and form a squirrel-cage winding on the rotor.

Abstract: A connector includes a connector body made of an electrically insulating material, having a contact support wall whose one end defines a contact mount portion, and a contact made of an electrically conductive material, having a pair of resilient contact elements located on upper and lower sides of the contact support wall, and a resilient support portion which connects the resilient contact elements and which is elastically supported by the contact mount portion. The resilient support portion of the contact is engaged with the contact support wall so that the entire contact can swing about the contact mount portion.

Abstract: In a permanent magnet rotor type electric motor in which a permanent magnet is embedded in a rotor, a permanent magnet used for a magnetic pole of one polarity in a rotor core and another permanent magnet used for a magnetic pole of the other polarity have different configurations and materials from each other, so that the selecting range for the magnetic flux density and the reluctance torque of the permanent magnet rotor type electric motor can be increased.

Abstract: A developing roller is made up of a magnet member and a sleeve surrounding the magnet member. A sophisticated magnetic characteristic including a repulsive pole can be easily formed on the surface of the sleeve. The repulsive pole causes a developer to be sharply released from the surface of the sleeve. A developing device including the developing roller is also disclosed.

Abstract: A developing roller is made up of a magnet member and a sleeve surrounding the magnet member. A sophisticated magnetic characteristic including a repulsive pole can be easily formed on the surface of the sleeve. The repulsive pole causes a developer to be sharply released from the surface of the sleeve. A developing device including the developing roller is also disclosed.

Abstract: In an electric motor, such as a DC brushless motor or the like, having a permanent magnet in a rotor, each magnetic pole is formed of three permanent magnets, and the permanent magnets are made of at least two kinds of magnetic materials represented by ferrite magnet and rare-earth magnet. Thus, in a permanent magnet rotor type electric motor, a reluctance torque and a magnetic flux density can be selectively established, and cost is reasonable, corresponding to the quality.

Abstract: The present invention provides a bone joining device used for joining, fixing and reinforcing fractured bones. The bone joining device is produced by pressing a molded product of a biodegradable and bioabsorbable resin.

Abstract: A permanent magnet rotor type electric motor is formed of a stator core generating a rotation magnetic field, and a rotor core rotationally situated inside the stator core. The rotor core includes a first core member for generating a magnet torque, permanent magnets embedded in the first core member for forming magnetic poles, and a second core member for generating a reluctance torque without having a permanent magnet therein. The second core member is coaxially united with the first core member so that the rotor core is divided into the first core member for generating the magnet torque and the second core member for generating the reluctance torque.

Abstract: A cylindrical structural body for use in an image forming apparatus and a method of producing the same are disclosed. The structural includes a cylindrical sleeve and flanges or similar end members respectively affixed to opposite ends of the sleeve. The flanges can be firmly and easily affixed to the sleeve without causing the sleeve to deform. The structural body is therefore low cost and highly accurate.

Abstract: In a permanent magnet rotor type electric motor having a stator core generating a rotation magnetic field and provided therein with a rotor core in which each magnetic pole is formed by a permanent magnet, the rotor core is fabricated by coaxially and unitedly joining a first core member and a second core member, in which a first permanent magnet of a predetermined cross-section shape is embedded per magnetic pole in the first core member, and a second permanent magnet which is made of a different material and has a different cross-section shape from those of the first permanent magnet is embedded per magnetic pole in the second core member, thereby achieving the permanent magnet rotor type electric motor having the performance and size appropriate for the intended use.

Abstract: A system for monitoring an ATM cross-connecting apparatus by rewriting a VPI conversion table to various values, inputting a test cell, and examining the test cell after the test cell passes through the ATM cross-connecting apparatus. Entries of a VPI conversion table are accompanied by traffic flags indicating whether or not the corresponding entry is occupied for use for user's signals. First, the traffic flags are examined. Each entry not occupied for user's signals can be freely rewritten. Each entry occupied for user's signals is not rewritten. The examination of the test cell is carried out by comparing the test cell output from the ATM cross-connecting apparatus, with a reference cell which is expected from a normal operation of the ATM cross-connecting apparatus. The virtual path identifier converted in the ATM cross-connecting apparatus and contained in the output test cell, is expected corresponding to the above rewriting operations, and is contained in the reference cell.