JPH01205757A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To contrive the adsorption/separation of a magnetic head to/from a magnetic disk by bumping a carriage against a stopper an appropriate number of times to excite a vibration prior to starting up the rotation of the magnetic disk. CONSTITUTION:The above device is provided with a rubber stopper 6 on the center side of the magnetic disk 1, and prior to starting up the magnetic disk, an accurator 5 is intermittently driven an appropriate number of times to let the carriage 4 collide with the rubber stopper 6. By this method, the magnetic head 3 is vibrated not to run away to intrude into a data area, so that the absorption/separation between the magnetic disk 1 and the magnetic head 3 can be carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk device that takes into consideration prevention of damage to a magnetic head due to adsorption of the magnetic head to a magnetic disk.

[Prior art and its problems]

In magnetic disk drives that use hard disks, the mutual contact surfaces between the magnetic head and the magnetic disk have a nearly mirror finish, so if exposed to a high humidity environment, they will stick together, making it impossible to start up or damaging the magnetic head.

To avoid this, a conventional method has been proposed in which an oscillating current is applied to the actuator 5 to cause the magnetic head 3 provided on the carriage 4 to slide or vibrate in the radial direction, as shown in FIG. (Tokuko Sho 61-611
91, JP-A-61-217965).

Furthermore, a method has been proposed in which the magnetic head is vibrated in the vertical direction to separate the magnetic head. (Refer to Japanese Patent Application Laid-Open No. 62-40679).

However, the former method has the risk of data destruction due to runaway intrusion into the data recording area on one surface of the magnetic disk and excessive vibration intensity.

Also, the latter method is less effective than the former method.

SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a magnetic disk device that can effectively perform adsorption and removal without the above-mentioned problems.

[Means to solve the problem]

The present invention has been made to achieve the above objects,
A magnetic disk and a spindle motor that drives it,
In a magnetic disk drive equipped with a carriage equipped with a magnetic head and an actuator for moving the carriage in the radial direction of the magnetic disk, a stopper is provided to limit the movement range of the carriage, and before starting rotation of the magnetic disk, Abut the carriage against the stopper on an appropriate number of sides,
This is designed to excite vibrations to achieve adsorption and desorption.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows an embodiment of the present invention, in which 1 is a magnetic disk driven by a spindle motor 2, 3 is a magnetic head provided on a carriage 4, and 5 is a moving carriage 4 in the radial direction of the magnetic disk 1. This is an actuator that allows

In this embodiment, a rubber stopper 6 is provided on the center side of the magnetic disk 1, and before starting rotation of the magnetic disk, the actuator 5 is intermittently driven in an appropriate number of planes (1 to 1ooot1) to cause the carriage 4 to collide with the rubber stopper 6. Thereby, the magnetic head 3 is vibrated to attract and separate the magnetic disk 1 and the magnetic head 3.

[Different embodiments]

In the above embodiment, first, a current is applied to the spindle motor 2 that drives the magnetic disk 1 to start it up, and when the magnetic head 3 is attracted to the magnetic disk L and cannot rotate, this is detected and the actuator 5 is activated intermittently. It is also possible to apply a current to the rubber stopper 6 and cause the spindle motor 2 to be attracted and detached by collision with the rubber stopper 6 and vibration caused by the reaction, so that the spindle motor 2 with a light load starts to rotate.

〔Effect of the invention〕

The present invention requires only the addition of a carriage stopper and a simple circuit, and is a system that utilizes vibrations caused by reaction caused by collision with a stopper that limits the movement range.
Unlike the conventional method, there is no intrusion into the data recording area due to runaway, and it has a suction/detachment function that is actually superior to the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional device, and FIG. 2 is a side view of an embodiment of the present invention. 1... Magnetic disk 2... Spindle motor 3... Magnetic head 4... Carriage 5... Actuator 6... Rubber stopper Fig. 1 Fig. 2 Fig. 1... Magnetic disk 2... Spindle motor 3...magnetic head 4...carriage 5...actuator 6...rubber stopper

Claims (1)

[Claims] A magnetic disk and a spindle motor that drives it,
A magnetic disk device comprising a carriage provided with a magnetic head, an actuator for moving the carriage in the radial direction of the magnetic disk, and a stopper for limiting the movement range of the carriage, the magnetic disk device comprising: a carriage provided with a magnetic head; , a magnetic disk device characterized in that vibration is excited by abutting a carriage against a stopper an appropriate number of times.