Kabushiki Kaisha Toshiba

Toshiba Computer Engineering Corporation

Chikahisa Kawakami

Tsuneo Suzuki

Hiroshi Okamura

Hiroshi Ohashi

Shouji Nakajima

Akihiro Isomura

In a floppy disk drive, a disk driving mechanism is controlled by a disk drive controller so as to rotate a floppy disk for a predetermined time when the floppy disk is loaded into the disk drive. Thereby, dust adhering to the surface of the floppy disk can be removed with a cleaning liner in a cartridge containing the floppy disk. In addition, a magnetic head is brought into contact with a storage medium being stopped by the disk drive controller after dust adhering to the surface of the storage medium has been removed.

Disk drive and method for controlling the cleaning of the floppy disk

An azimuth adjustment disk having first and second areas alternately recorded in a circumfrential direction. Each of the first areas has two azimuth burst signal. The two azimuth burst signals have different azimuths and a first signal wavelength. While each of the second areas has two azimuth burst signals with azimuths corresponding to the bursts of the first areas, but which have a longer wavelength.

Alignment disk for magnetic head azimuth correction

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

A disc recording apparatus in which it is possible to temporarily secure a metallic belt to a metallic belt attachment plate in a condition in which metallic belt is curved in an .alpha.-like shape, and therefore, step of curving metallic belt, after head carriage is assembled to frame, which has been conventionally required, can be eliminated.

Disc recording apparatus provided with a mechanism for moving the

Disclosed is a construction for installing a stepping motor on a frame. A securing portion is provided for the stepping motor such that it is located in a plane perpendicular to the rotating shaft of the stepping motor. The securing portion has an installation hole extending parallel to the steel belt. A guide member is provided on the frame. This member guides the securing portion in a direction parallel to the steel belt, so that set screws do not change its orientation.

Construction for installing a stepping motor of a floppy disk drive unit

A floppy disc chucking device is provided for a floppy disc apparatus. The device comprises a permanent magnet for magnetically attracting a metallic chucking plate at the central portion of a floppy disc and a hub having a coupling surface closely in contact with the attracted chucking plate and rotated by a drive mechanism. The coupling surface of the hub is processed to form a coupling layer that has a predetermined thickness and a predetermined high hardness and provides a low coefficient of friction with the chucking plate in contact therewith.

Growing community of inventors

Fussa, Japan

Chikahisa Kawakami