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JP3128095B2 |
PURPOSE: To enable high recording and reproducing even in high-density recording and to easily enable the simultaneous copying of information. CONSTITUTION: A magnetic material which generates diaferromagnetic- ferromagnetic transition i...
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JP3127239B2 |
PURPOSE: To obtain a metal magnet in which the turbulence of a magnetic field in a neutral zone is dissolved by a method wherein a plurality of magnetic poles are formed on one side of the magnet and the neutral zone between the adjacent...
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JP2001015340A |
To constitute magnetic paths around a cavity by impressing a heteropolar radial magnetic field having mutually-faced N-poles and S-poles upon the cavity, by respectively arranging three exciting coils on the upper and lower surfaces of a...
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JP2000357611A |
To demagnetize a thin ferromagnetic product by alternating a train of positive pulses and a train of negative pulses, with the intensity of pulses gradually decreasing from the first train of pulses toward the last one along with the tim...
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JP2000331305A |
To enable generating a magnetic field varying a direction and magnitude of the magnetic field by a single phase AC power source. A magnetizer comprises a first exciting coil 5 in which one pair of coils 3, 4 wound on magnetic poles 2a, 2...
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JP3109314B2 |
PURPOSE: To provide a multipolar magnetization magnet roll for constituting a magnetic brush development device in an electrophotographic development device such as a copying machine, a facsimile and a laser printer, and a manufacturing ...
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JP2000306728A |
To provide the demagnetizing method for an electromagnetic chuck, which can have its attracting force easily adjusted and can obtain a weak attracting force by properly removing residual magnetism, and to provide the permanent electromag...
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JP2000306727A |
To provide a motor which is made free of a resonance sound source and a vibration exciting force in rotation. A heating device which has projection-shaped heat conduction parts 26, heated to a prescribed temperature by an internal heatin...
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JP2000306726A |
To provide a motor which is made free of a resonance sound source and a vibration exciting force in rotation. After a permanent magnet 11 which is not magnetized is mounted on a magnetizing yoke and magnetized by feeding a half-wave magn...
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JP3099558B2 |
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JP2000286120A |
To provide a magnet which can increase the flexibility in design for the miniaturization, simplification, etc., of a device, using the magnet by localizing magnetic poles of the magnet to one end face side only and can widen the use of t...
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JP3097884B2 |
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JP3094515B2 |
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JP2000269034A |
To form a plurality of magnetic poles over the endless circumferential surface of a body to be magnetized at uniformly spaced small intervals. A master magnet roll 1, having a plurality of magnetic poles formed closer to a circumferentia...
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JP2000252122A |
To provide a magnetism reader which can prevent deposition of dust onto a means for generating a magnetic field. This magnetism reader has an electromagnet for magnetizing an MICR character on check paper, a magnetic reading head for rea...
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JP2000253630A |
To impart flexibility to motor characteristic by obtaining a variety of magnetizing patterns. In this magnet magnetizing device, an outer peripheral side magnetizing yoke 41 having a plurality of winding parts C11, C12,... is arranged al...
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JP2000252123A |
To provide a demagnetizing device which can be made as small and lightweight as a user can easily carry it with his hand, and can produce a strong demagnetizing action with less power consumption. First and second magnets 14A and 14B as ...
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JP2000235918A |
To prevent effects on the outside due to remanent magnetism by defining a return path of magnetic flux in a specified direction, while inducing and converging magnetic flux from remanence existing in the end portion of a steel plate. A b...
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JP2000232757A |
To obtain a magnetization method in which the magnet of a motor for a compressor is magnetized uniformly. In this magnetization method of a motor 30 for a compressor, 3n pieces [(n) represents a positive number of 2 or higher] of magneti...
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JP2000228307A |
To provide a demagnetizing device in which unpleasant noise due to vibration of a demagnetizing member is small, when demagnetization is performed. In this demagnetizing device 21, since a demagnetizing coil 24 comprises a material whose...
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JP3077280B2 |
PURPOSE:To provide a magnetizing device which magnetizes a ring-shaped magnet in a radial direction as it is built in a magnetic circuit and can be easily dismounted after a magnetizing operation is finished by a method wherein a winding...
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JP2000216021A |
To provide a magnetizing apparatus by which a vehicle can be driven by using the energy source the vehicle has as driving energy with less operating energy with the apparatus installed on the vehicle, by enabling to directly magnetizing ...
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JP2000208324A |
To reduce the number of turns or the thickness of a coil for easier and efficient demagnetization operation. A U-shaped core 3 of ferromagnetic material penetrates the center of a magnetic field generating coil 1, with both end parts 2a ...
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JP2000208326A |
To efficiently demagnetize a magnetized part of a slab, with a simple device. With a truck 6 provided on a slab 5 for allowed movement and four demagnetizing coils 1-4 placed on the truck 6 provided, the demagnetizing coils 1-4 comprise ...
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JP2000208325A |
To efficiently demagnetize a magnetized part in a building with a simple device. A truck 3 installed on a magnetized part for allowed movement and a demagnetizing coil 4 placed on the truck 3, are provided. Here, the demagnetizing coil 4...
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JP3068029B2 |
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JP3063560B2 |
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JP3061440B2 |
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JP3062187B1 |
[wrap up] [Task] Provided is a radial anisotropic magnet capable of increasing the strength of a central magnetic field without significantly reducing the mechanical strength such as brittleness. One of the north pole and the south pole ...
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JP2000188214A |
To enhance DC superposition characteristics by molding a core of ferromagnetic powder added with magnet powder and then applying a high field in the direction of magnetic path of the core thereby magnetizing the magnet powder. Pure iron ...
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JP2000182828A |
To reduce the leak current at the upper part of the magnetic circuit yoke of a voice coil motor by adhering a tabular permanent magnet to a magnetic yoke, magnetizing it in a magnetizing direction and applying an external magnetic field ...
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JP2000182829A |
To reduce the dissipation of an electric energy and magnetize a lot of works by comprising a permanent magnet for forming a magnetic field passing through a cavity and a support operator disposed to magnetize one or more elements inserte...
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JP2000156318A |
To provide a method for demagnetizing an induction electric appliance which does not require the supply of DC power energy to the electric appliance from an outside electric station, etc.In a method in which the core of an induction elec...
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JP2000150261A |
To eliminate a difference between input and output by installing demagnetization winding to demagnetize an excited core. An auto-transformer with a demagnetization circuit is formed by wrapping insulating paper 2 around a core 1, and for...
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JP3045882B2 |
PURPOSE: To improve surface magnetic field and sensitivity of signal generating magnet by respectively focusing the direction of orientation of magnetic particles in the thickness direction of a magnet to two concentric annular areas in ...
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JP3042055B2 |
PURPOSE: To obtain a small type cylindrical multipolar permanent magnet on which the number of poles in axial direction is increased. CONSTITUTION: The title multipolar magnetized permanent magnet is constituted in such a manner that a s...
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JP2000133518A |
To provide a method for magnetizing an object to be magnetized, in such a pattern that a plurality of magnetic poles are formed at very short intervals on the endless peripheral surface of the object, and a high magnetic flux density is ...
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JP2000133519A |
To efficiently form a plurality of magnetic poles at very short intervals, in the peripheral surface of an object to be magnetized which has an endless peripheral surface. A master magnet roll 2, in which a plurality of magnetic poles ar...
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JP2000114042A |
To form a magnetic-pole group in which a plurality of magnetic poles are magnetized on the circumferential surface of an object to be magnetized having non- magnetized end, and a magnetic powder can be attracted uniformly thereon.A magne...
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JP3026877B2 |
PURPOSE: To make it possible to maintain the actual value of an exciting voltage at a target value by detecting the exciting voltage, and adjusting the exciting voltage based on the detected signal. CONSTITUTION: An AC input current is c...
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JP3025104B2 |
PURPOSE: To prevent the attenuation of magnetization due to flux leap. CONSTITUTION: The superconductive state of the title superconductive bulk magnet is established by cooling down step in non-magnetic field. Later, the superconductive...
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JP3023678B1 |
[wrap up] [Task] To provide a degaussing device that enables sufficient degaussing of a large cathode ray tube with a simple configuration and a smaller alternating decay current. A coil for degaussing having an air core portion wider th...
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JP3024288B2 |
PURPOSE: To provide a ring-shaped permanent magnet magnetizing method where a ring-shaped permanent magnet built in a magnet circuit used for a speaker or the like can be magnetized as it is built in a magnetic circuit by solving a probl...
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JP3021314B2 |
PURPOSE: To provide a device and a method for magnetizing a signal magnetic pole, wherein a relative positional relation between a drive magnetic pole and a signal magnetic pole is excellent in accuracy, and an operator is not required t...
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JP2000077232A |
To demagnetize a current transformer iron core which is biased in magnetization or saturated, even when a carrying current at the primary side circuit of a current transformer by suppressing to a minimum the interruption of the function ...
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JP3018637B2 |
PURPOSE: To solve the problem permitting the magnetization of the ring-shaped magnet only as it is incorporated in a center role so that it should be incorporated in the magnetic circuit after the magnetization and to provide the product...
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JP3012049B2 |
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JP3008615B2 |
PURPOSE: To obtain the title radial anisotropic ring magnet having sine wave type flux density distribution along the circumferential direction. CONSTITUTION: A magnet 10 formed in a ring shape is magnetized with magnetic fields in the r...
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JP2000040611A |
To facilitate the magnetization in the lower magnetic field also displaying extremely high coersive force once magnetized, by a method wherein, in the material containing MnBi magnetic powder in a specific particle size and a resin binde...
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JP3003665B2 |
To enable magnetization at minimum magnetizing voltage and magnetizing current required for 100% magnetization without fail, regardless of the change in the resistance of the applying wire, such as stator winding, to which a magnetizing ...
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