JPH02242771A - Storage of magnetic recorder part - Google Patents

Abstract

PURPOSE:To prevent the surface of a medium in storage from being contaminated with water or dusts by placing a magnetic recorder part in a container provided with an inlet and an outlet opening, introducing a water-free inert gas into the container from the inlet opening with its joint part sealed and closing the inlet and outlet openings. CONSTITUTION:A magnetic recorder part 9 is placed in a container provided with an inlet opening 10 and an outlet opening 11 for inert gas, a water-free inert gas is then introduced into the container from the inlet opening 10 with its joint part 3 sealed and the inlet opening 10 and the outlet opening 11 are thereafter closed. When the inert gas is being introduced into the container from the inlet opening 10, the outlet opening 11 is left open to allow a mixture of the inner air and the inert gas to escape through the outlet opening 11 and, in about a few minutes, all the air inside the container is replaced with the inert gas. The nitrogen gas having a specific gravity close to that of air and readily available is suitable as the inert gas. This prevents the surface of a medium in storage from being contaminated with water or dusts.

Description

[Detailed Description of the Invention] [Summary] Storage suitable for transporting and storing parts that are extremely sensitive to dust and moisture, such as magnetic disk media and magnetic heads, which are the main parts of magnetic recording devices. Regarding the method, in order to prevent moisture and dust from adhering to the media surface during storage, magnetic recording device parts are placed in a container equipped with an inert gas inlet and an outlet, and then With the gap in the container sealed and airtight, an inert gas containing no moisture is filled through the inlet, and then the inlet and the outlet are sealed.

[Industrial application field]

When transporting or storing parts that are extremely sensitive to dust and moisture, such as magnetic disk media (hereinafter referred to as "media") and magnetic heads, which are the main components of magnetic recording devices, be sure to Care must be taken to prevent such substances from adhering to the surface.

The present invention relates to a method for storing magnetic recording device components that require a clean atmosphere.

[Conventional technology]

2 to 4 are diagrams showing a conventional storage method for magnetic recording device components. FIG. 2 is a perspective view showing the external appearance of the container, which consists of an upper case 1 and a lower case 2, and can be opened and closed by being divided into upper and lower parts at an opening/closing part 3.

FIG. 3 is a cross-sectional view of a state in which a medium is stored and stored in a container, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3. The holder 4 inserted into the lower case 2 has many slits 5...
It has parallel cylinders 6, 7, 8 with ., and each medium 9 is stably supported by being inserted into the slit 5.

In this way, attach the medium 9 to the holder 4 in the lower case 2.
... is supported, the upper case 1 is placed on top, and the divided portion 3 is sealed with adhesive tape or the like to prevent dust and moisture from entering.

[Problem to be solved by the invention]

In this manner, while the medium 9 is stored in a sealed container, the moisture in the container may condense and adhere to the surface of the medium 9, leading to a head crash or the like.

Normally, when air at 23°C and 40% humidity drops to 7°C in the container due to the influence of outside air, condensation begins.
Moisture adheres to the surface. When a medium with moisture attached to it is mounted in a magnetic disk device and information is recorded/reproduced by a magnetic head, the flying stability of the head decreases due to the moisture, which may lead to a head crash.

Therefore, when the medium is taken out from the container, the surface of the medium is cleaned with tape varnish or the like to ensure the flying stability of the head. However, since a lubricant is applied to the media surface to ensure abrasion resistance, repeating tape burnishing will cause the lubricant to be rubbed off by the tape, worsening the abrasion resistance. Problems such as a shortened media life arise.

In addition, desiccant is sometimes placed in a container to remove moisture, but the desiccant generates dust from itself and adheres to the media surface, causing problems in the head, similar to when moisture adheres. There is a possibility that floating performance will be affected.

A technical object of the present invention is to solve such problems and to prevent moisture and dust from adhering to the surface of the medium during storage.

[Means to solve the problem]

FIG. 1 is a perspective view illustrating the basic principle of a method for storing magnetic recording device components according to the present invention. The container of the present invention is provided with an inert gas inlet 10 and an outlet 11.

After putting the magnetic recording device parts 9 into this container, with the gap 3 of the container sealed and airtight, an inert gas that does not contain moisture is introduced from the inlet 10 and filled, and then 10 and the discharge port 11 are sealed.

[Effect]

An inert gas is introduced and filled from the inlet 10 into a container containing magnetic recording device components such as a medium, and the container is sealed. Therefore, magnetic recording device components are always stored in an inert gas atmosphere that does not contain moisture. The container is filled with an inert gas that does not contain moisture, so even if the temperature of the outside air drops, there is no chance of condensation forming inside the container and causing moisture to adhere to the magnetic recording device parts. .

Furthermore, since there is no need to add a desiccant or the like, there is no fear that dust will be generated inside the container and adhere to the parts of the magnetic recording device.

Therefore, a clean atmosphere without the possibility of water droplets or dust being generated is always maintained.

〔Example〕

Next, how the method for storing magnetic recording device parts according to the present invention is actually implemented will be explained using examples. There are various configurations of the container, but it is sufficient as long as the opening and closing parts can be reliably sealed and that the container has an inert gas inlet and an outlet.

When inert gas is introduced and filled from the inlet port 10 in FIG. 1, the outlet port 11 is left open.
A mixture of air and inert gas inside the container blows out. In a few minutes, the entire atmosphere inside the container becomes an inert gas.

As the inert gas, nitrogen gas, which has a specific gravity close to that of air and is easily available, is suitable. Inject nitrogen gas from the inlet
When introduced at ~2 kg/cd, the interior is completely replaced with nitrogen gas in 1 to 2 minutes.

When the inside of the container is replaced with inert gas, the filling of inert gas is stopped and the inlet and outlet are quickly sealed. It is recommended that a large amount of inert gas be filled in the container so that the pressure is normal or slightly positive.

Furthermore, if you do not want to be affected by the outside air, it is better to put the container containing the magnetic recording device components into a plastic bag or the like and seal it. At this time, it is more reliable to fill the inside of the plastic bag with nitrogen gas or use vacuum packaging.

The structure of the inlet and outlet should be such that they can be easily opened and closed.For example, the inlet and outlet should be plugged with highly elastic rubber or resin, such as the so-called "belly button" for inflating tennis balls. By inserting a needle, it becomes an inlet and an outlet, and after filling with inert gas, simply remove the needle.
It is also possible to use one that can close naturally.

Next, Table 1 shows the characteristics of media stored by the method of the present invention and by the conventional method.

In Table 2, ■ is an example in which water-free nitrogen gas was filled by the method of the present invention and gaps etc. were sealed. (2) is an example in which only clean air is used without filling in an inert gas, and the gaps are sealed. (2) is an example in which neither inert gas is filled nor gaps are sealed.

All of these results are the results of measuring the flying properties of the magnetic head in a clean room after the medium was left in a container for one day, taken out, and without tape burnishing.

As is clear from this table, when nitrogen gas is filled and sealed using the method of the present invention described in (2), the flying property is the best (the average number of times the head contacts the medium is also small, and it is very stable). I know that there is.

As shown in (2), when the inside of the container is filled with only clean air and the container is sealed, the average number of times the head makes contact increases and media defects also occur.

As shown in (2), when neither inert gas filling nor sealing is performed, the average number of head contacts and the defective rate increase significantly. Moreover, the head sometimes became dirty during measurement and did not fly at all.

As is clear from the above measurement results, when the method of the present invention is used to fill in nitrogen gas that does not contain water and seal the gaps, the cleanliness inside the container is maintained well and the head floats. It was confirmed that there was no deterioration in sex.

[Effects of the Invention] As described above, according to the present invention, a container for storing magnetic recording device components is filled with an inert gas that does not contain moisture, and the gaps are sealed, which causes dew condensation and dust generation. There is no fear. Therefore, problems such as dirt on the medium surface and impairing the flying ability of the head can be solved.

[Brief explanation of drawings]

FIG. 1 is a perspective view illustrating the basic principle of the storage method for magnetic recording device parts according to the present invention, FIG. 2 is an external perspective view of a container for storing magnetic recording device parts in a conventional method, and FIG. 3 is an inside view of the container. FIG. 4 is a sectional view taken along the line -■ in FIG. 3. FIG. In the figure, 1 is the upper case, 2 is the lower case, 3 is the opening/closing part (divided part, gap), 4 is the support stand, 5... is the slit,
6.7.8 is a cylinder, 9 is a medium, 10 is an inert gas inlet, and 11 is an inert gas outlet. Patent Applicant: Fujitsu Limited, Sub-Agent, Patent Attorney: Yasushi Fukushima, Ryo Bunho ■Basic Order Diagram 1, Singing State. Figure 3

Claims (1)

[Claims] After placing the magnetic recording device component (9) in a container provided with an inert gas inlet (10) and an outlet (11), the gap (3) in the container is sealed to make the container airtight. In this state, an inert gas containing no moisture is filled through the inlet (10), and then the inlet (10) and the outlet (11) are sealed. Storage method.