JPS62192954A - Cylinder blocking test method - Google Patents
Cylinder blocking test methodInfo
- Publication number
- JPS62192954A JPS62192954A JP3590686A JP3590686A JPS62192954A JP S62192954 A JPS62192954 A JP S62192954A JP 3590686 A JP3590686 A JP 3590686A JP 3590686 A JP3590686 A JP 3590686A JP S62192954 A JPS62192954 A JP S62192954A
- Authority
- JP
- Japan
- Prior art keywords
- water
- cylinder
- ions
- magnetic layer
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000903 blocking effect Effects 0.000 title claims abstract description 14
- 238000010998 test method Methods 0.000 title claims description 8
- 150000002500 ions Chemical class 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims 1
- 239000006247 magnetic powder Substances 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 3
- 229910052801 chlorine Inorganic materials 0.000 abstract description 3
- 239000000460 chlorine Substances 0.000 abstract description 3
- -1 chlorine ions Chemical class 0.000 abstract description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract description 2
- 229940085991 phosphate ion Drugs 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010041349 Somnolence Diseases 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 210000000744 eyelid Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、磁気記録再生装置に用いられるアルミニウム
製シリンダー表面のシリンダーブロッキング試験法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cylinder blocking test method for the surface of an aluminum cylinder used in a magnetic recording/reproducing device.
従来の技術
近年、磁気テープなどの磁気記録媒体が使用されるシス
テムにおいては、磁気記録再生装置のポータプル化、カ
メラ一体型などの普及により、屋内、屋外のあらゆる環
境下で使用されるようにな２ べ−ノ
リ、これに伴ない上記磁気記録媒体の使用環境は、今寸
で以上に巾広く眠しいものと寿っている。例えば、その
使用環境は、熱帯地方においては高温高湿、寒冷地にお
いては屋ダ１の低温や、屋外から室内の移動による結露
など様々なものが考えられる。特に結露などの起こりや
すい環境、条件下で磁気記録再生装置のアルミニウム製
シＩＪ ７ダーに磁気テープをローディングｌ−だ状態
で電源が切断された場合に、前記ローディング状態が解
除されない前記磁気記録再生装置においては磁気テープ
と接触したアルミニウム製シリンダーの界面に結露した
液体の水が入り込むことによって、シリンダーブロッキ
ングと呼ばれるアルミニウム製シリンダーの腐食、さら
には腐食による磁気テープ磁性層の剥離等が起こる。ア
ルミニウム製シリンダーの腐食においては表面の凹凸の
発生による走行性の低下、また、磁気テープ磁性層の剥
離においては、磁気記録媒体として致命的な欠陥となる
ことが充分に考えられる。BACKGROUND OF THE INVENTION In recent years, systems using magnetic recording media such as magnetic tapes have come to be used in all kinds of environments, both indoors and outdoors, due to the proliferation of portable magnetic recording and reproducing devices and integrated cameras. 2. As a result, the environments in which the above magnetic recording media are used have become more extensive and sleepy than they are today. For example, the environment in which it is used may be various, such as high temperature and high humidity in a tropical region, low temperature in the building 1 in a cold region, or condensation due to movement from outdoors to indoors. In particular, when the power is cut off while a magnetic tape is being loaded into the aluminum cylinder of the magnetic recording and reproducing device under conditions and environments where dew condensation is likely to occur, the loading state is not released. In devices, condensed liquid water enters the interface of an aluminum cylinder that is in contact with a magnetic tape, causing corrosion of the aluminum cylinder called cylinder blocking and further peeling of the magnetic layer of the magnetic tape due to corrosion. Corrosion of aluminum cylinders can cause a decrease in running performance due to surface irregularities, and peeling of the magnetic layer of a magnetic tape can be considered to be a fatal defect as a magnetic recording medium.
上記の問題を事前に把握し改αする目的でシリ３ ・・
ンダープロノギング試験法がある１、
上述した従来のシリンダーブロッキング試１ｈ、’ｔｌ
ｔの一例についてＦ＋＋２明する。In order to understand the above problems in advance and modify them, there is a series 3... under-pronogging test method 1, the conventional cylinder blocking test 1h, 'tl described above.
An example of t will be explained in F++2.
磁気記録再生装置に使用されるアルミニウム製シリンダ
ーの側面が垂直になるように設定し２、前記アルミニウ
ム製シリンダーの外周に長さ３０ｍ程度に切断１〜だ磁
気テープの磁性層表面を密着させて巻きつけたのち、そ
の両端をクリップ等で固定し、前記クリップの一端に６
０ｙの荷重をかける。これを４０℃、８０〜８５％ＲＨ
の高ン晶高湿に設定された恒温恒湿槽内に１６８時間放
置ｌ〜だのち取り出し、磁気テープを取りはずし、アル
ミニウム製シリンダー表向と磁気テープ磁性層表面の状
態を目視により確ＮＪ ％判定する。An aluminum cylinder used in a magnetic recording/reproducing device is set so that the side surface thereof is perpendicular, and the magnetic tape is cut to a length of about 30 m around the outer periphery of the aluminum cylinder. After attaching it, fix both ends with a clip, etc., and attach a 6.
Apply a load of 0y. 40℃, 80-85%RH
Leave it in a constant temperature and humidity chamber set at a high temperature and humidity for 168 hours, then take it out, remove the magnetic tape, and visually check the condition of the aluminum cylinder surface and the magnetic tape magnetic layer surface to determine NJ%. do.
発明力１了決し、ようとする問題点
しかＬ５ながら一ト記のＪ二うなシリンダーツ゛ＩＩ
）ギング試瞼法で１ｌ−Ｊへ恒温恒湿槽を必要とし、試
験結果を得る１でに１υに間以上の長期間を必惇とする
。Inventiveness 1 has been decided, and the only problem I have with L5 is J2 Una Cylinder Twin II.
) The eyelid test method requires a constant temperature and humidity chamber of 1l-J, and requires a long period of time of 1υ or more to obtain the test results.
さらに、試験結果は官能評価によるので個人差が大きい
などの１１旧但があった。Furthermore, the test results were based on sensory evaluation, so there were 11 cons such as large individual differences.
本発明ｋｔ、−１記問題に鑑み、アルミニ−ラム製シリ
ンダーの腐食性を簡便にしかも定ＥＩｌ的に予測、評価
することかできるシリンダーブロッキング試験θ、を稈
供するものである１、
問題点を路次する／でめの手段
上記間頂点を１竹決するために本発明のシリンダーブロ
ッキング試験法は、磁気テープの磁・１・′１層表面か
ら水にＭ出さｔする塩素イオン等の水射４／１イオン量
を４１１］定することにより、前記磁気ｊ−−プによる
アルミニウノ、製シリンダー澗−面のｉｆ’！ｉ食１／
ｌ全１／ｌ、評価するようにしたものである。、
作用
磁気テープ磁性層によるアルミニウノ、製シリンダーの
腐食は、結露による水が＋）ｆｆ記磁気テープ磁性層と
アルミニウム製シリンダーの接触！７１＋−面に入るこ
とによって磁性層表面から塩素イオン、リン酸イオン、
硫酸イオン等の水浴１イ１−イオンが諸１１０７、これ
らのイオンがアルミニウノ、と反応してアルミニウム製
シリンダー表面を腐食さ−（Ｊ７るということが充分考
えられる。したかつで、本発明は、前記５ ・−・
の試験法により磁気テープ磁性層表面から水に溶出され
る塩素イオン等の水溶性イオン量を測定することにより
磁気テープによるシリンダーブロッキングを筒中にしか
も定置的に予測評価できることとなる。In view of the problem described in the present invention kt,-1, we provide a cylinder blocking test θ, which can easily predict and evaluate the corrosiveness of aluminum ram cylinders with constant EIl.1. In order to determine the above-mentioned apex, the cylinder blocking test method of the present invention involves water injection of chlorine ions, etc., which are released into water from the surface of the magnetic layer 1 and 1 of the magnetic tape. By determining the amount of 4/1 ions as 411], if'! i meal 1/
The total ratio of 1/l was evaluated. , Corrosion of the aluminum cylinder by the magnetic tape magnetic layer is caused by water due to condensation) ff Contact between the magnetic tape magnetic layer and the aluminum cylinder! By entering the 71+- plane, chloride ions, phosphate ions,
It is quite conceivable that water bath 1107 ions such as sulfate ions react with aluminum and corrode the surface of the aluminum cylinder. By measuring the amount of water-soluble ions such as chloride ions eluted from the surface of the magnetic tape magnetic layer into water using the test method described in 5 above, cylinder blocking due to magnetic tape can be predicted and evaluated in the cylinder and stationary. .
実施例
以下本発明のシリンダーブロノギング試１験法について
説明する。EXAMPLE A cylinder blow nogging test method of the present invention will be explained below.
磁気テープから磁性層を剥離し、その５００■を１ｏｏ
ｍｔ分液ロートに移し入れ、純水５ｏｍｉを加えたのち
、振とう機を用い室温で毎分２８０サイクルの振動を５
分間りえ、水溶性イオンを溶出させ、水溶液を？濾過し
て試料溶液とする。この溶重量当たりの水溶ｉ＜１−塩
素イオン濃度を求める。Peel off the magnetic layer from the magnetic tape and remove 500cm of it from 1oo
Transfer to mt separatory funnel, add 5 omi of pure water, and shake at room temperature for 5 times at 280 cycles per minute using a shaker.
Elute the water-soluble ions for a minute and make an aqueous solution? Filter and use as sample solution. The water-soluble i<1-chlorine ion concentration per this dissolved weight is determined.
図面に本発明による磁性層中の水浴性塩素イオン濃度と
シリンダーブロッキングの関係を示す。The drawing shows the relationship between the water bath chloride ion concentration in the magnetic layer and cylinder blocking according to the present invention.
これから、磁性層中の水溶性塩素イオン濃度とシリンダ
ーブロッキングの程度には相関があり、水６へ−７
溶性塩素イオン濃度からシリンダーのブロッキング性を
予測、評価できることがわかる。すなわち、水溶性塩素
イオン濃度が高いほど、シリンダーブロッキングが起こ
りやすいこととなる１つまた、水溶性のリン酸イオン、
硫酸イオン等についても上記実施例と同じ溶出処理をす
ることによって測定することができる。溶出処理におい
ては、磁気テープをそが１水に浸漬あるいは、磁性層表
面だけを水に接触させることによ−）ても可能である。From this, it can be seen that there is a correlation between the water-soluble chlorine ion concentration in the magnetic layer and the degree of cylinder blocking, and that the blocking property of the cylinder can be predicted and evaluated from the water-soluble chlorine ion concentration. In other words, the higher the concentration of water-soluble chloride ions, the more likely cylinder blocking will occur.
Sulfate ions and the like can also be measured by performing the same elution treatment as in the above example. The elution treatment can also be carried out by immersing the magnetic tape in water or by bringing only the surface of the magnetic layer into contact with water.
発明の効果
以上のように本発明によれば、磁性層から溶出される水
溶性イオン量を測定することにより磁気記録媒体による
シリンダー表面の腐食性を予測、評価する方法であり、
恒温恒湿槽舌の試、験槽を必要とせず、短時間のうちに
シリンダーのブロッキング性が評価できる簡便な方法で
あり、その実用的効果は大なるものがある。Effects of the Invention As described above, according to the present invention, there is provided a method for predicting and evaluating the corrosivity of a cylinder surface caused by a magnetic recording medium by measuring the amount of water-soluble ions eluted from a magnetic layer.
It is a simple method that can evaluate the blocking properties of cylinders in a short time without requiring a constant temperature and humidity bath tongue test or a test chamber, and its practical effects are great.
Claims (1)
性層を有し、前記磁性層から溶出される水溶性イオン量
を測定することにより、磁気記録媒体によるシリンダー
表面の腐食性を予測、評価することを特徴とするシリン
ダーブロッキング試験法。Predict and evaluate the corrosivity of the cylinder surface caused by magnetic recording media by having a magnetic layer mainly composed of magnetic powder and binder on a non-magnetic support and measuring the amount of water-soluble ions eluted from the magnetic layer. A cylinder blocking test method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3590686A JPS62192954A (en) | 1986-02-20 | 1986-02-20 | Cylinder blocking test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3590686A JPS62192954A (en) | 1986-02-20 | 1986-02-20 | Cylinder blocking test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62192954A true JPS62192954A (en) | 1987-08-24 |
Family
ID=12455070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3590686A Pending JPS62192954A (en) | 1986-02-20 | 1986-02-20 | Cylinder blocking test method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62192954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5830556A (en) * | 1994-12-28 | 1998-11-03 | Sony Corporation | Magnetic recording medium |
-
1986
- 1986-02-20 JP JP3590686A patent/JPS62192954A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5830556A (en) * | 1994-12-28 | 1998-11-03 | Sony Corporation | Magnetic recording medium |
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