Mitsubishi Denki Kabushiki Kaisha

Junji Kawada

Takamitsu Sugahara

Satoru Akutsu

Akira Hashimoto

Yuji Nakahara

Youichi Fujita

Tadashi Hasegawa

Yasutaka Mizutani

Hiroshi Miyazaki

Hirohiko Sugiura

Yasunori Takai

Masaru Matsumoto

Ken-ichi Azuma

Kenji Shoji

Masao Sato

Kazunobu Hamatsu

Tetsu Yamamoto

Kazuo Koike

Masayoshi Kamo

Kenichi Azuma

Yasushi Onooka

A flexible disk drive has the configuration of a type-2 card for use in a personal computer or other information processing apparatus. The flexible disk drive includes a cabinet for insertion into a card slot in the information processing apparatus, a mechanism for inserting and ejecting a recording medium cartridge containing a recording medium, a head for accessing the recording medium, a head drive actuator for moving the head, a recording medium drive actuator for driving the recording medium, a position device for positioning the recording medium in a predetermined position, and a drive force transfer mechanism for transferring the driving force of the recording medium drive actuator to the recording medium. The components of the flexible disk drive have thin profiles to achieve the form factor of the type-2 card.

Exchangeable storage apparatus, recording medium drive actuator, head drive actuator, and recording medium cartridge

An object of the present invention is to provide a low cost, high performance, thin structure rotary motor for driving medium used in magnetic disk drive unit, optical disk drive unit or the like, in order to improve the productivity of terminating processing and the reliability of the coils. Magnetic materials which are divided to a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.

Rotary motor and production method thereof, and laminated core production method thereof

A flexible disk drive has the configuration of a type-2 card for use in a personal computer or other information processing apparatus. The flexible disk drive includes a cabinet for insertion into a card slot in the information processing apparatus, a mechanism for inserting and ejecting a recording medium cartridge containing a recording medium, a head for accessing the recording medium, a head drive actuator for moving the head, a recording medium drive actuator for driving the recording medium, a positioning device for positioning the recording medium in a predetermined position, and a drive force transfer mechanism for transferring the driving force of the recording medium drive actuator to the recording medium. The components of the flexible disk drive have thin profiles to achieve the form factor of the type-2 card.

Exchangeable storage apparatus, recording medium drive actuator, head drive actuator and recording medium cartridge

Rotary motor and production method thereof, and laminated core and production method thereof

Magnetic materials which are divided into a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.

Method of making a rotary motor

Rotary motor and production method thereof, and laminated core and

A recording medium cartridge includes a disk-shaped recording medium and a case housing the recording medium. A window is provided in the case to expose a portion of the recording medium. A shutter is provided on the case to close and expose the window. A latch is movable in a direction perpendicular to the direction of relative movement of the shutter and is linked to the shutter by a band such that movement of the band causes the shutter to selectively close or expose the window. In one embodiment, the recording medium cartridge has a non-zero thickness equal to or less than approximately 2.0 mm.

Recording medium with a band attached to both sides of a shutter for

A small and thin storage device that can be substituted for IC memory card is disclosed. When the recording medium cartridge is inserted into the frame of the storage device, a slide member in a hub moves parallel to the frame and retracts a shaft under restriction of a restriction member provided in the recording medium cartridge so that the hub and the shaft engage. When the recording medium cartridge is ejected from the frame, the slide member moves parallel to the frame and the shaft under restriction of the restriction member so as to release the engagement of the shaft and the hub.

Storage device and recording medium cartridge

A flexible disk apparatus is provided, which comprises a carriage including a read/write head at the tip end thereof and a coil bobbin disposed at the other end thereof, the coil bobbin permitting a voice coil to be connected integrally therewith. The side of the voice coil is located in a magnetic circuit formed of a magnet. The carriage is slidably mounted on a moving guide fixed on a base.

Read/write head positioning mechanism for flexible disk drive device

A mechanism for a loading/unloading read and/or write head of a disk drive apparatus against a magnetic disk, includes a lifter which bends a suspension supporting the read and/or write head. The suspension is bent by moving a lifter up responsive to movement of the read and/or write head to detach the read and/or write head retained on a tip of the suspension from the magnetic disk by a given distance, thereby a high shock resistance is obtained.

Loading/unloading mechanism for read and/or write head

A magnetic disk drive. A cartridge for accommodating a magnetic recording medium also accommodates an actuator and a spindle. The spindle accommodated in the cartridge is driven by a spindle driving mechanism provided in a driving device so as to rotate the magnetic recording medium. The actuator is driven by an actuator driving mechanism provided in the driving device so as to move a magnetic head approximately in the radial direction of the magnetic recording medium. The cartridge includes a shutter mechanism which is opened so as to expose at least a part of the spindle and the actuator in such a manner as to face the actuator driving mechanism and the spindle driving mechanism, respectively, when the cartridge is mounted on the driving device and which is closed so as to enclose the spindle and the magnetic head and the actuator in the cartridge in a sealed state when the cartridge is removed from the driving device. The cartridge further includes a ramp loading mechanism for protecting the magnetic head from an external shock when the cartridge is removed from the driving device.

Magnetic disk drive having a cartridge with actuator and spindle

A retract mechanism for a magnetic head which can read from and/or write to a disk, the mechanism includes a spring arm which supports the head and urges the head toward the disk. The spring arm includes a cam follower which rides along the surface of the cam, which has two parallel horizontal surfaces and two incline surfaces. The spring arm is moved by an actuator in a radial direction along the disk. When the spring arm is moved radially away from the center of the disk, the cam urges the spring arm upwardly, thereby lifting the head up and away from the disk. As the spring arm continues to move radially away from the center of the disk, the cam guides the spring arm such that the head rests safely on a landing platform.

Read/write head retract mechanism

A head positioning device used for a disc type memory system comprises a head being movable by a metallic band wherein the metallic band is extended between a capstan and an idle roller in a loop form, and the metallic band is wound around the capstan with at least one turn.

Growing community of inventors

Tokyo, Japan

Junji Kawada