JPH0478075A - Driving system for floppy disk - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a drive method for a floppy disk device in a computer system, and particularly to a drive method for a magnetic head.

[Conventional technology]

FIG. 2 is a diagram for explaining the positions of a floppy disk and a magnetic head of a floppy disk device installed in a conventional computer system. 1 is a flexible floppy sheet, 2 is a magnetic head, 3 is a spindle motor, 4 is a cover surface, 5 is a non-recording surface on the inner circumferential side of the data surface 4, 6 is a position of the magnetic disk 2 at cylinder 0, 7 is the position of the magnetic head 2 when it is in an arbitrary cylinder. In this case, the magnetic head 2 is held by an actuator via a holding member (not shown), and is driven by the actuator so as to be in sliding contact with the floppy sheet in the radial direction, thereby reading and writing data.

Next, the operation will be explained.

When the system is started, the magnetic head 2 is stopped at position 6 of cylinder 0. Insert floppy sheet 1, and after accessing the desired file, insert floppy sheet 1.
When the magnetic head 2 is taken out, the magnetic head 2 is stopped at the position 7 where access has been completed.

Next, when inserting the floppy sheet 1 again and accessing any file, the magnetic head 2 librates from the previous access end position 7 (moves to position 6 of cylinder 0) and moves to the desired cylinder position. access. In other words, it is driven starting from the previous access end position 7 on the data surface.

[Problem to be solved by the invention]

Conventional Frembie disk devices are configured as described above, so if the magnetic head is covered with dirt and dust when the floppy sheet is removed, when the floppy sheet is inserted and any file is accessed, the magnetic head The head is driven starting from the data surface at the previous access end position 7, and at this position the data surface of the floppy sheet is rubbed by the dusty surface of the magnetic head.
This has the problem of damaging the data surface of the floppy sheet, and depending on the size of the dirt/dust, it can lead to media defects.

The present invention has been made to solve the above-mentioned problems, and its object is to provide a drive method for a floppy disk device that does not damage the data surface of a floppy sheet.

Means for Solving Problem C] The floppy disk device according to the present invention drives the magnetic head by sliding the non-recording surface on the inner circumferential side of the floppy sheet as a starting point when starting reading or writing data. I made it.

[Effect]

In the Frembie disk device of this invention, the movement of the magnetic head when reading or writing from a floppy sheet starts from the non-recording surface, so even if dirt or dust is attached to the magnetic head, the movement of the magnetic head starts from the non-recording surface. It is removed by sliding contact with.

[Embodiments of the invention]

An embodiment of a floppy disk device drive system according to the present invention will be described below with reference to FIG.

In FIG. 1, 1 is a floppy sheet, 2 is a magnetic head, 3 is a spindle motor, 4 is a data surface, 5 is a non-recording surface on the inner circumferential side of the data surface, 8 is a holding member, and 9 is an actuator. The holding member 8 is made of an elastic material and is driven in the radial direction of the floppy sheet by an actuator.

In this case, when reading or writing from the floppy sheet is completed, the magnetic head 2 is always retracted onto the non-recording surface 5 shown in the figure, and is not held at a position corresponding to the data surface as in the conventional case, but is driven starting from the non-recording surface. be done. As a result, when the floppy sheet 1 is rotated, the magnetic head 2 is driven in the radial direction after sliding on the non-recording surface.

Next, the operation will be explained.

If before system startup! The recording head 2 is retracted to a position corresponding to the position of the non-recording surface 5 on the inner circumferential side from the data surface of the front surface. When a floppy disk 1 is inserted from the outside and started, the magnetic head 2 comes into sliding contact with the non-recording surface 5. By rotating the spindle motor 3 at the position, dirt and dust can be removed and the data surface 4 will not be scratched.

〔Effect of the invention〕

As described above, according to the present invention, since the movement of the magnetic head when reading or writing a new floppy sheet is configured to start from the non-recording surface, the data surface is not scratched by dust. , media defects can be prevented.

[Brief explanation of drawings]

FIG. 1 is a block diagram illustrating an embodiment of a drive system for a Frembie disk device according to the present invention, and FIG. 2 is a block diagram showing an example of a drive system for a conventional floppy disk device. ■ is a floppy sheet, 2 is a magnetic head, 3 is a spindle motor, 4 is a data surface, 5 is a non-recording surface, 6 is a cylinder 0 position, 7 is an arbitrary cylinder position, 8 is a holding member, 9
is an actuator. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Patent Attorney Jun Miyazono Figure 1 1: Flo Novy Seat, 2. Mansho moxibustion head 3, spindle motor, 4;
: A 1 hand Yurta man 2 Figure 6; : 7 Lingepa 0 mad rf 7: Appointment/dismissal/Shilling measure number

Claims (1)

[Claims] A floppy disk drive is equipped with a spindle motor that rotates a floppy sheet inputted from the outside, and an actuator that moves a magnetic head that slides against the floppy sheet to read and write data on the floppy sheet in the radial direction of the floppy sheet. A drive method for a floppy disk device characterized in that when reading or writing starts, a magnetic head is driven in the direction of the data surface of the floppy sheet, starting from a non-recording surface on the inner circumferential side of the data surface of the floppy sheet.