JPS61120322A - Flexible disk for head cleaning - Google Patents

Abstract

PURPOSE:To obtain a flexible disk for head cleaning that can check soil of the head and can make stable cleaning at all times by providing a checking track, a cleaning zone and a program track. CONSTITUTION:A track 5 for checking is formed in inner peripheral part of the disk 3 and a cleaning zone 6 is formed its outside, and a program track 7 is formed in outer peripheral part. The track 5 for checking makes write and read of test data for checking write/read error caused by soil of the magnetic head. The cleaning zone 6 is a cleaning face that cleans the face of the head, and formed by, for instance, applying abrasive on a part of the magnetic recording face of the disk 3. Controlling programs for movement of the head in the cleaning zone 6, write/read data to the track 5 for checking and indication and error display are recorded in the program track 7.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a head cleaning flexible disk for cleaning head dirt.

(Prior Art) In general, when a magnetic head is used in magnetic recording with the light open for a long time on a magnetic recording medium such as a flexible disk, a part of the magnetic recording layer of the flexible disk may be scraped off and adhered to the magnetic head. Furthermore, a very small amount of lubricant and the like contained in the magnetic recording layer accumulates, staining the magnetic head and degrading its performance. Therefore, it is necessary to clean the magnetic head with a cleaning disk to remove dirt and restore its performance.

Conventional cleaning disks include a dry type, which uses an abrasive sheet in the form of a disc, and a wet type, which uses a nonwoven fabric impregnated with a solvent or liquid during use.
Further, as shown in, for example, Japanese Utility Model Application No. 58-23018, a flexible disk in which a magnetic head cleaning area is provided in a part of the track is known.

However, in any cleaning disk,
For example, in a personal computer, in the initialization mode, the head is pressed against the cleaning disk to seek and clean it, but it is difficult to move the head over the entire surface of the cleaning disk, and it is difficult to move the head over the entire surface of the cleaning disk. It is unclear whether or not cleaning is necessary due to a lack of checking, and usage problems such as dirty heads with degraded performance being left unattended, resulting in write/read errors, and unnecessary head cleaning. have.

(Object of the Invention) In view of the above-mentioned circumstances, an object of the present invention is to provide a flexible disk for head cleaning that allows checking for dirt on the head and allowing stable cleaning to be performed at all times.

(Structure of the Invention) The flexible disk for head cleaning of the present invention includes a check track for writing/reading test data and checking write/read errors due to head contamination, and cleaning for cleaning the head surface with an abrasive or the like. A cleaning zone, a control program for performing a cleaning operation of moving the head in the cleaning zone, a program track in which a control program for writing/reading test data to/from the check track and displaying an error is recorded. It is something.

(Effects of the Invention) According to the present invention, by providing a check track, a cleaning zone, and a program track, it is possible to easily check for errors caused by head dirt at regular or regular intervals, and as a result, This allows you to perform head cleaning by looking at the image and also check the cleaning effect. Moreover, these operations
With the control program recorded on the program track, it can be performed without requiring any skill, and stable effects can be expected.

(Example) Hereinafter, embodiments of the present invention will be explained using concave surfaces.

As shown in FIG. 11, the flexible disk 1 for head cleaning includes a disk 3 in the shape of a circular sheet housed in a shell 2, a center hole 3a formed in the center of the disk 3, and a head window 2a formed in the jacket 2. And the center window 2b is open.

The disk 3 has a check track 5 on its inner circumference, a cleaning zone 6 on its outer side, and a program track 7 on its outer circumference.

The check track 5 is a magnetic head (not shown)
The test data is written and read in order to check the degree of contamination and write/read errors caused by the contamination. This check track 5 is provided on the inner track where errors are likely to occur, and here,
Check data is written by a control program for the program track 7, which will be described later, and the number of errors is detected from the read result using known error detection methods such as data verification, CRC check, and parity check, and is displayed on a CRT (not shown). . Furthermore, it is also used to check the cleaning results in a similar manner.

The cleaning zone 6 is a cleaning surface for cleaning the head surface, and is provided in an intermediate track so that the head can seek to the entire zone. This cleaning zone 6 is formed, for example, by applying an abrasive to a part of the magnetic recording surface of the disk 3.

Furthermore, the program track 7 records control programs for the movement of the head in the cleaning zone 6, write/read data and instructions for the check track 5, and error display. That is, this control program includes a program that seeks the head to the check track 5, a program that reads test data after writing it and displays the number of error bits, and a program that seeks the head to the cleaning zone 6 and loads the head to fill this zone. When cleaning the head, it includes a program that performs back-and-forth several times while the head is in the same state. First, test data is written/read, the number of errors is displayed, and the degree of dirt on the head is checked. Perform head cleaning in cleaning zone 6 as required, and then turn on the light/write again after cleaning.
The cleaning is completed after checking for read errors and confirming that dirt has been removed. Further, the program track 7 is provided on an outer track with a high read margin.

Note that the flexible disk 1 requires an index track that is read first by the head, and this index track is usually formed on the outer or inner circumference, and is connected to the check track 5, the cleaning zone 6, and the program track 7. However, in the case of a type in which the index track is provided in the middle part, it is necessary to form cleaning zones 6 on both sides excluding this part.

To explain the formation of the flexible disk 1 for head cleaning as described above, the disk 3 has a base of a sheet of plastic such as cellulose, triacetate, polyethylene terephthalate, etc., and has a thickness of 2 to 200 microns.

A ferromagnetic layer is provided on the support, and the ferromagnetic materials include 7 F e 203 , F e 30 m , G
7-Fez Os or Fea 04 containing O
, QrOR, Fe'-Co or Fe-Co-Ni
Go is made as a fine powder such as a system, or by electroplating, chemical plating, vapor deposition, ion blating, etc.

There is a Go-Ni type material.

The material of the abrasive to be applied on this ferromagnetic layer is chromium oxide (CrzOs), alumina oxide (A
Ito3), silicon oxide (Sing), cerium oxide (C
e02), zirconium oxide (2row), red iron (
(Z-FezO3) etc., the particle size is 50μ
~0.1μ, preferably 15μ to 0.5μ; if the size is too large, the magnetic head surface will be strongly polished, resulting in large head wear and head surface roughness; if it is too small, the polishing effect will be reduced. There are few.

The above ferromagnetic layer is formed by using fine ferromagnetic material powder, resin, r
A ferromagnetic material is provided on the plastic by a binder method in which a lubricant, a conductive material, an abrasive, a solvent, etc. are mixed and dispersed and coated on the plastic base, or by a method in which the ferromagnetic material is deposited on a sheet substrate by plating. The above-mentioned abrasive is applied to a part of the surface.

A control program is recorded on a part of the track on the magnetic recording surface of the disk 3 having the cleaning zone 6 formed in this way to form a program track 7 and a check track 5 is left. is formed.

Note that in the cleaning zone 6 of the flexible disk 1 for head cleaning of the present invention, a ferromagnetic material is not required. In some cases, the cleaning zone 6 does not include any ferromagnetic material.

[Brief explanation of drawings]

FIG. 1 is a front view showing a flexible disk for head cleaning in one embodiment of the present invention. 1... Flexible disk for head cleaning 2
...Jacket 3...Disc 5...
Check truck 6...Cleaning zone 7...Program track

Claims (2)

[Claims] (1) A check track for writing and reading test data to check for write/read errors due to head dirt, a cleaning zone for cleaning the head surface with abrasives, etc., and moving the head in the cleaning zone. A flexible disk for head cleaning characterized by comprising a control program, a program track recording a control program for writing/reading test data to/from a check track and displaying an error. (2) The first aspect of the present invention is characterized in that the check track is provided on the inner circumference, the program track is provided on the outer circumference, and a cleaning zone is formed between the two.
Flexible disk for head cleaning as described in section.