Kabushiki Kaisha Toshiba

Mitsubishi Electric Corporation

Nippon Steel & Sumitomo Metal Corporation

Tokyo Shibaura Electric Co., Ltd.

Toshiba Computer Engineering Corporation

Hiroshi Ohashi

Masahiro Kusunoki

Kenji Watanabe

Hirokazu Taniguchi

Hiroshi Okamura

Tsuneo Suzuki

Takashi Hikosaka

Yoichiro Tanaka

Susumu Kimura

Yoshinobu Ishikawa

Atsuo Koga

Shigeru Takekado

Kazushi Tanimoto

Hiroshi Ohishi

Yoshiaki Uchida

Yasuo Ohtsubo

Hidetake Shiire

Makoto Taniguchi

Kazuyuki Tsurunaga

Chikahisa Kawakami

Jun Matsuzaki

Shigeru Hoshina

Toshiyuki Fujioka

Hideki Hachiya

Yasuharu Kanai

Hiroshi Koike

Hideaki Wakayama

Kunio Yokokura

Toshiya Saito

An actual supply data acquirer acquires, for a replaceable member with which a product is replaceably provided, actual supply data representing an actual result of shipment for replacement of the replaceable member in the product that is already sold and used. A determiner, using the actual supply data acquired by the actual supply data acquirer, determines whether an excess demand situation occurs in which demand for the replaceable member exceeds predetermined forecasted demand. A notification controller, when the determiner determines that the excess demand situation occurs, performs notification control to cause sending of notification indicating a possibility that an abnormality is occurring in quality of the product.

Quality control device, quality control system, quality control method, and quality control program

In a laminated steel plate in which steel plates are joined to both faces of a core layer, the core layer is formed of a meshed wire group formed using wires in a mesh form and a resin sheet, the wires forming the meshed wire group have a tensile strength of 601 MPa or higher, and an opening of the meshed wire group is equal to or less than ten times the thickness of the steel plates. By thus defining the tensile strength of the wires, light-weightness can be achieved compatibly with high rigidity and shock resistance, and by defining the opening of the meshed wire group, workability and shape stability after being processed can be improved.

Laminated steel plate

The present invention includes a first switch 4a, a second switch 4b and a capacitor 4d. The first switch 4a normally in a closed state is connected in series between a power source 1 and load, and opens when an accident builds up. The second switch 4b normally in an open state closes almost simultaneously with the opening of the first switch 4a. The capacity 4d normally charged by an arbitrary voltage has predetermined electrically capacity. The serial connected circuit consists of the second switch 4b and capacitor 4d, it is connected in parallel to the first switch 4a.

Current limiting breaking device using electromagnetic repulsion coil

An operation apparatus of a circuit breaker provided with a mobile contact and a fixed contact, the mobile contact is pressed against the fixed contact or drawn apart from the fixed contact, comprising an operation rod fixed to the mobile contact and held to be movable with respect to the fixed contact, a mobile member movably connected to the operation rod, a relative movable range of the mobile member to the operation rod being limited within a predetermined value, a first elastic member for urging the operation rod with respect to the mobile member in a direction in which the mobile contact is pressed against the fixed contact, a fixed member for movably holding the mobile member, a second elastic member for urging the mobile member with respect to the fixed member in a direction in which the mobile contact is drawn apart from the fixed contact, a permanent magnet for driving the mobile member with respect to the fixed member in a direction in which the mobile contact is pressed against the fixed contact, an operation electromagnet for applying a magnet force to the permanent magnet so as to drive the mobile member, and a power supply circuit for energizing the operation electromagnet.

Operation apparatus of circuit breaker

According to the present invention, there is provided a magnetic disk memory system. An embodiment of this system comprises a magnetic disk of a perpendicular recording type, including a soft magnetic backing layer and a magnetic recording layer of a perpendicular magnetic anisotropy formed on the backing layer, and a magnetic head for writing or reading of data with respect to the magnetic disk, wherein the magnetic head comprises (a) a pair of main magnetic poles each of which made of a material having a high magnetic permeability, one end of the each pole being located so as to face the magnetic disk surface, (b) a non-magnetic interlayer provided between two main magnetic poles of the pair, (c) a recording coil disposed so as to generate a magnetic flux passing through the magnetic disk via the main magnetic poles, and (d) an MR element provided via an insulation layer on the other ends of the pair of main magnetic poles, one MR element having a film surface parallel to end surfaces of the other ends of the main magnetic poles, and being magnetically coupled with the pair of main magnetic poles.

Magnetic disk memory system

A magnetic disk unit has a magnetic head and a magnetic recording medium. The magnetic head records and retrieves information to and from the magnetic recording medium. In the magnetic disk unit the magnetic head and magnetic recording medium move relative to each other; and a device sets the frictional coefficient of the magnetic head and magnetic recording medium within an intermediate range extending from a minimum frictional coefficient point to a point where the durability of the magnetic head and the magnetic recording medium is not adversely affected. The range is determined, on a Stribeck diagram which indicates the relation of a relative velocity to a frictional coefficient of the magnetic head and magnetic recording medium.

Magnetic disk unit utilizing a predetermined range for the frictional

A magnetic recording apparatus capable of efficiently erasing data in accordance with a type of magnetic recording medium, comprises a current source, an erase head for erasing data recorded on a recording medium using a supplied erase current, and a current supplying section for supplying an erase current from the current source to the erase head in accordance with input erase current control data. The current supplying section comprises a selecting section for selecting a combination of a plurality of control elements in accordance with the input erase current control data, and a supplying section for supplying an erase current determined in accordance with the selected combination from the current source to the erase head.

Method of efficiently erasing data in accordance with type of magnetic

A magnetic head device for use with a high recording density, large memory capacity floppy disk, is disclosed. The slider of the magnetic head device has a contact surface for effecting contact with a disk, the lead/write gap is located at a predetermined position in the contact surface, and the width of the slider contact surface is 1 mm or less.

Magnetic head device

A magnetic recording/reproduction apparatus of the invention has a magnetic head for reading a vertical magnetically recorded signal, an inplane magnetic recorded signal or a magnetic recorded signal having both a vertical magnetic component and an inplane magnetic component and for supplying a reproduced signal, a first analog signal converting circuit for converting the reproduced signal into an analog inplane reproduced signal when the reproduced signal is a vertical reproduced analog signal, a second analog signal converting circuit for bypassing an inplane analog reproduced signal when the reproduced signal is the inplane reproduced analog signal, and a third analog signal converting circuit for converting the reproduced signal into an inplane reproduced analog signal when the reproduced signal is the inplane reproduced analog signal. The circuits are switched to operate selectively in accordance with the type of signals reproduced from a magnetic recording medium.

Magnetic recording/reproduction apparatus

Leaf spring is fixed at one end thereto to a carriage, and extended at a predetermined angle to the carriage. A part of the leaf spring has rigidity. A gimbal spring, which free from the carriage, is mounted on the rigid portion. Head is fixed to the gimbal spring. The head can move perpendicularly to the carriage by the operation of the leaf spring, and can roll and pitch by the operation of the gimbal spring. Thus, the head can follow to move elevationally upward and downward and incline to the disk-like recording medium and contact the medium with good contacting property.

Head supporting mechanism for maintaining close operative relationship

A method for assembling a magnetic head supporting mechanism of a flexible disk drive apparatus comprising the steps of attaching to a gimbal support device a magnetic head for recording and reproducing information by contacting a recording surface of a disk, by a first gimbal device for slidably supporting the magnetic head, the gimbal support device receiving a force when the position of the magnetic head is adjusted, placing the first gimbal device in a position opposite the disk of a head support device, applying the force to the gimbal support device to position the magnetic head in a predetermined position separated by a predetermined distance from a reference position of the head support device, and moving the gimbal support device in the position opposite the disk of the head support device, and attaching the gimbal support device to the head support device.

Method for assembling a magnetic head supporting mechanism of a flexible

In a magnetic head drive apparatus of this invention, a coil of an erasing head is connected to a center point of the coils of a read/write head, and a drive current from a constant-current source is alternately supplied to both terminals of the coil of the read/write head, according to the polarity of the write data. When the read/write head is driven to write data in a magnetic recording medium, the erasing head and the read/write head are driven at an identical timing. In this case, the drive currents for the read/write head and the erasing head are supplied from a single-current source. For this reason, separate constant-current sources are not necessary for the read/write head and the erasing head.

Magnetic head drive apparatus which uses a common current source for the

In this vacuum interrupter device, one or more upper terminals and lower terminals connected to a vacuum interrupter built in the device are attached to an insulating barrier which is provided with a plurality of chambers opening outward and capable of being closed by removable covers. In each of said chambers is placed one of non-linear resistors as many as said upper or lower terminals, one end of each of said resistors being connected to one of the upper or lower terminals corresponding thereto which is connected to the electric load, thereto and another end of each of said resistors being grounded through a switch.

Growing community of inventors

Tokyo, Japan

Hiroshi Ohashi