JPH01113866U

JPH01113866U -

Info

Publication number: JPH01113866U
Application number: JP568588U
Authority: JP
Priority date: 1988-01-20
Filing date: 1988-01-20
Publication date: 1989-07-31

Description

[Brief explanation of the drawing]

第１図ないし第３図は本考案の実施例に係り、
第１図は本実施例による磁気デイスク装置の回路
構成を示すブロツク図、第２図は粘着解除処理動
作を示す流れ図、第３図は始動時のスピンドルモ
ータ電流を示す特性線図、第４図は従来技術によ
る磁気デイスク装置のカバーを外した全体構成を
示す正面図である。１……ハウジング、２……磁気デイスク、３…
…スピンドルモータ、６……スイングアーム、７
……磁気ヘツド、８……ボイスコイルモータ、１
１……制御装置、１２……入出力制御回路、１３
……処理回路、１４……記憶回路、１５……カウ
ンタ、１６……始動・停止スイツチ、１７，１８
……駆動回路、２０……電流センサ。 Figures 1 to 3 relate to embodiments of the present invention,
Fig. 1 is a block diagram showing the circuit configuration of the magnetic disk device according to this embodiment, Fig. 2 is a flow chart showing the adhesion release processing operation, Fig. 3 is a characteristic diagram showing the spindle motor current at startup, and Fig. 4 1 is a front view showing the overall configuration of a conventional magnetic disk device with the cover removed. FIG. 1...Housing, 2...Magnetic disk, 3...
...Spindle motor, 6...Swing arm, 7
...Magnetic head, 8...Voice coil motor, 1
1... Control device, 12... Input/output control circuit, 13
... Processing circuit, 14 ... Memory circuit, 15 ... Counter, 16 ... Start/stop switch, 17, 18
...Drive circuit, 20...Current sensor.

Claims

[Scope of utility model registration request]

a housing, a magnetic disk rotatably provided within the housing, a disk drive motor that rotationally drives the magnetic disk, a magnetic head that writes and reads information to and from the magnetic disk, and a magnetic disk that drives the magnetic disk. In a magnetic disk device comprising a head drive motor that moves the disk in the radial direction, a forward/reverse rotation means for causing the disk drive motor to rotate forward and reverse at startup, and a state in which the disk drive motor is started by the forward/reverse rotation means. an adhesion determining means for determining whether or not the magnetic head is adhering to the magnetic disk; and when the adhesion determining means determines that the magnetic head is adhering to the magnetic disk, the forward/reverse rotation means rotates the disk drive motor in the correct direction. so as to cause the magnetic head to swing inward and outward in the radial direction in a rotated or reversed state;
A magnetic disk device comprising a seesaw seek operation means for causing the head drive motor to perform a seesaw seek operation.