JPH0233723A - High density and high output recording medium of magnetoplumbite with coexisting magnetic element - Google Patents
High density and high output recording medium of magnetoplumbite with coexisting magnetic elementInfo
- Publication number
- JPH0233723A JPH0233723A JP63182812A JP18281288A JPH0233723A JP H0233723 A JPH0233723 A JP H0233723A JP 63182812 A JP63182812 A JP 63182812A JP 18281288 A JP18281288 A JP 18281288A JP H0233723 A JPH0233723 A JP H0233723A
- Authority
- JP
- Japan
- Prior art keywords
- elements
- magnetoplumbite
- present
- magnetic
- particles
- 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.)
- Granted
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052788 barium Inorganic materials 0.000 claims abstract description 4
- 229910020517 Co—Ti Inorganic materials 0.000 claims abstract description 3
- 229910002546 FeCo Inorganic materials 0.000 claims abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims abstract description 3
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052738 indium Inorganic materials 0.000 claims abstract description 3
- 229910052745 lead Inorganic materials 0.000 claims abstract description 3
- 229910001004 magnetic alloy Inorganic materials 0.000 claims abstract description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 3
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052771 Terbium Inorganic materials 0.000 claims abstract 2
- 239000011651 chromium Substances 0.000 claims abstract 2
- 229910052758 niobium Inorganic materials 0.000 claims abstract 2
- 229910052714 tellurium Inorganic materials 0.000 claims abstract 2
- 229910052720 vanadium Inorganic materials 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 abstract description 23
- 239000010941 cobalt Substances 0.000 abstract description 17
- 229910017052 cobalt Inorganic materials 0.000 abstract description 17
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 17
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 abstract description 13
- 239000006185 dispersion Substances 0.000 abstract description 9
- 238000012856 packing Methods 0.000 abstract description 2
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium dioxide Chemical compound O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 abstract 2
- -1 etc. Inorganic materials 0.000 abstract 2
- 229910052688 Gadolinium Inorganic materials 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 238000000576 coating method Methods 0.000 description 23
- 239000011248 coating agent Substances 0.000 description 21
- 229910000859 α-Fe Inorganic materials 0.000 description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 9
- 239000000696 magnetic material Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000003973 paint Substances 0.000 description 9
- 239000013078 crystal Substances 0.000 description 8
- 230000005415 magnetization Effects 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 7
- 239000006249 magnetic particle Substances 0.000 description 6
- 238000004528 spin coating Methods 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 206010024229 Leprosy Diseases 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- QRXDDLFGCDQOTA-UHFFFAOYSA-N cobalt(2+) iron(2+) oxygen(2-) Chemical compound [O-2].[Fe+2].[Co+2].[O-2] QRXDDLFGCDQOTA-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- QDZRBIRIPNZRSG-UHFFFAOYSA-N titanium nitrate Chemical class [O-][N+](=O)O[Ti](O[N+]([O-])=O)(O[N+]([O-])=O)O[N+]([O-])=O QDZRBIRIPNZRSG-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、Ｆｅ、 Ｇｏ、 Ｎｉ＋ など鉄属元素、Ｇ
ｄ、 ＴｂＴｅ、など稀土類元素、クローム１磁性合金
ＦｅＣｏ。[Detailed Description of the Invention] The present invention is directed to the use of ferrous elements such as Fe, Go, Ni+, G
d, rare earth elements such as TbTe, chromium-1 magnetic alloy, FeCo.
ＣｒＯ□など、元素及び合金と、マグネトプランハイ１
−とを結合、又は共存した、磁気記録体であり、広い波
長記録域にわたり高記録密度で出力を高めた磁気記録体
（素子、粉体、媒体等含む）に関する。Elements and alloys such as CrO□, and magnetopran high 1
The present invention relates to a magnetic recording body (including elements, powder, media, etc.) that combines or coexists with - and has high recording density and increased output over a wide wavelength recording range.
従来公知の磁気記録体としてはＧｏ−’ｒ Ｆｅｚｅｓ
等があるが、高い記録密度のものが得られず、約２０Ｋ
ＦＲＰＩが限界であり、Ｈｃも７０００ｅ（らいしか上
らず、記録密度を高くすると出力が著しく低下して使用
出来ないという欠点がある。Go-'r Fezes is a conventionally known magnetic recording medium.
etc., but it is not possible to obtain a high recording density, and it is about 20K.
FRPI is the limit, Hc is only 7000e (leprosy), and if the recording density is increased, the output drops significantly and cannot be used.
又、メタル（純鉄）磁性体は、化学的に不安定であり、
発火して火災が発生するなど、製造上取扱が面倒で危険
であった。In addition, metal (pure iron) magnetic materials are chemically unstable,
It was difficult to handle and dangerous in manufacturing, as it could ignite and cause a fire.
又、バリウムフェライト磁性体は出力が低い欠点がある
。そこで、Ｈｃを上げて出力を上げようとすると］−１
ｃ７５００ｅ以上ではオーバーライドの問題が生しる事
が知られている。Moreover, barium ferrite magnetic material has the disadvantage of low output. Therefore, if you try to increase the output by increasing Hc] -1
It is known that override problems occur with C7500e and above.
第１図のごとくバリウムフェライト粒子１は薄い板状の
六方晶で、面に垂直に磁化容易軸２があり、これを含む
塗料を第２図のごとく回転するディスク３にスピンコー
ティングし、マグネット４でオリエンテーションすると
遠心力で粒子１ばディスク３面に、直立５するが、粒子
１近くに空隙６が生ずる。これにより、コーティングに
ビンボールが生ずる可能性も出てくる。又、粒子１のデ
ィスク３の面方向オリエンテーションをすると、その結
晶の粒子方向が８のように方向を変えるが、コーティン
グ塗料の抵抗が大きい。As shown in Fig. 1, barium ferrite particles 1 are thin plate-shaped hexagonal crystals with an axis of easy magnetization 2 perpendicular to the surface.A paint containing this is spin-coated on a rotating disk 3 as shown in Fig. 2, and a magnet 4 When the particle is oriented in this direction, the centrifugal force causes the particle 1 to stand upright 5 on the surface of the disk 3, but a gap 6 is created near the particle 1. This also creates the possibility of bottle balls in the coating. Further, when the disk 3 of the particle 1 is oriented in the in-plane direction, the grain direction of the crystal changes as shown in 8, but the resistance of the coating material is large.
本発明は前記の従来の記録体の欠点、出力不足、オリエ
ンテーション時の抵抗等をすべて解消するコンピュータ
等記録体の画期的大発明である。The present invention is an epoch-making invention for recording media such as computers, which eliminates all the drawbacks of the conventional recording media, such as insufficient output and resistance during orientation.
マグネトプランバイトとはＡ Ｆｅ＋ｌ２−ＸＩ Ｍｘ
ｏ １ｑ（ただし、Ａは、Ｂａ、Ｓｒ、Ｐｂから選ばれ
た１種以上の元素を、ＭはＩｎ 、 Ｚｎ −ＧｅＺ
ｎ−Ｎｂ Ｚｎ−Ｖ Ｃｏ−Ｔｉ Ｃｏ−Ｇｅの
１種以上の置換元素又は元素の組合せを、またＸは１〜
２．５の正の数をそれぞれ表す）で示されたバリウムフ
ェライト等であり、保磁力の値は上記Ｗ換元素の種類お
よび量の制御により、記録、再生用ヘッドの材料に適合
する範囲に調整することができる。What is magnetoplumbite?A Fe+l2-XI Mx
o 1q (However, A is one or more elements selected from Ba, Sr, and Pb, and M is In, Zn-GeZ
n-Nb Zn-V Co-Ti Co-Ge, one or more substituting elements or a combination of elements, and X is 1 to
barium ferrite, etc., each representing a positive number of 2.5), and the coercive force value can be adjusted to a range compatible with the material of the recording and reproducing head by controlling the type and amount of the above-mentioned tungsten-containing element. Can be adjusted.
本発明は、特定元素と、マグネトプランバイトとを結合
し、あるいは共存させるのである。In the present invention, a specific element and magnetoplumbite are combined or made to coexist.
即ちコバルト等をバリウムフェライト等に被着させ、出
力増加と、コバルト等被着によるバリウムフェライト等
の六方晶形の角に丸味を帯びさせて、粒子のディスバー
ジョン中での移動を容易にさせ、又粒子の単体容積当り
の充填率を上げる事による出力増加と、オリエンテーシ
ョンが改善される事による出力増加と、ビットシフトす
その直立左移化、さらにアルミナコーティングによるデ
ィスバージョン内のバインダとの結合強化と、分散が良
くなる事によるノイズ低下とコーテイング膜強度増大が
できるので、出力が高く且つ高密度記録ができ、耐久性
の強い媒体を得られる。本発明は水平磁化方式媒体、垂
直磁化方式媒体のいづれも含むものである。That is, by depositing cobalt etc. on barium ferrite etc., the output is increased and the corners of the hexagonal crystal shape of barium ferrite etc. are rounded by depositing cobalt etc. to facilitate the movement of particles during dispersion. Increased output by increasing the filling rate per unit volume of particles, increased output by improving orientation, shifting the bit shift base to the left and right, and strengthening the bond with the binder in the dispersion by alumina coating. Since the improved dispersion reduces noise and increases the strength of the coating film, it is possible to obtain a medium with high output, high density recording, and high durability. The present invention includes both horizontal magnetization type media and perpendicular magnetization type media.
本発明の実施例を述べると、第３図は、バリウム、鉄、
コバルトおよびチタンの硝酸塩から成る原料９を、各モ
ル比１ ： １０．６ ： ０．７ ： ０．７で含
む水溶液にアルカリを添加して得た共沈物を水洗してア
ルカリを除き乾燥した後、９５０℃で加熱処理してバリ
ウムフェライトを得る。これは平均粒径０．１μｍの板
状で、保磁ノ］ Ｈｃ１０００エルステッド、磁化σｇ
５８ｅｍｕ／ｇの微粉末である。このバリウムフェライ
ト１を水に分散して、スラリー状とし、Ｃ０５Ｏ，とＦ
ｅ５Ｏｎの水溶液を加え、ついでＮａ叶氷水溶液加えて
中和し、バリウムフェライト粒子１表面にコバルト層１
０を形成させる。これにより結晶１のカドがなくなり丸
味を与えられる本発明実施例を示す。これはコバルト以
外でもよい。Describing an embodiment of the present invention, FIG. 3 shows barium, iron,
A coprecipitate obtained by adding an alkali to an aqueous solution containing raw material 9 consisting of cobalt and titanium nitrates in a molar ratio of 1:10.6:0.7:0.7 was washed with water to remove the alkali and dried. Thereafter, a heat treatment is performed at 950° C. to obtain barium ferrite. This is a plate shape with an average grain size of 0.1 μm, coercive magnetic field] Hc1000 oersted, magnetization σg
It is a fine powder of 58 emu/g. This barium ferrite 1 is dispersed in water to form a slurry, and C05O, F
Add an aqueous solution of e5On, and then neutralize by adding an aqueous solution of Na Kanohei to form a cobalt layer 1 on the surface of the barium ferrite particle 1.
0 is formed. This shows an example of the present invention in which the edges of Crystal 1 are eliminated and roundness is imparted. This may be other than cobalt.
第４図は第３図のものを水に分散して、スラリー状とし
、Ａｌ２（ＳＯ４）：ｌの水溶液を加え、ついでＮａ０
Ｉｌ水溶液を加えて中和し、磁性粒子の表面に水酸化ア
ルミニウム１１を形成し、これを４５０℃で加熱してガ
ンマアルミナを前記コバルトの上に更に形成被着させた
本発明実施例を示す。In Figure 4, the material in Figure 3 is dispersed in water to form a slurry, an aqueous solution of Al2(SO4):l is added, and then Na0
An example of the present invention is shown in which aluminum hydroxide 11 is formed on the surface of the magnetic particles by adding an Il aqueous solution to neutralize the particles, and this is heated at 450° C. to further form and deposit gamma alumina on the cobalt. .
第５図および第６図は、この粒子を結着用樹脂（バイン
ダ）１２と混練して、ディスクコーティング用塗料１３
を作成し、その塗料をディスク基板にスピンコーティン
グして媒体にした本発明実施例を示す。FIGS. 5 and 6 show that the particles are kneaded with a binding resin (binder) 12 to form a disk coating paint 13.
An example of the present invention is shown in which a medium is prepared by spin-coating the paint on a disk substrate.
このスピンコーティングは、回転ベアリング１４で水平
に支持された回転軸１５に、ディスク基板となる直径約
１０インチのアルミニウムサブストレート又は直径８イ
ンチのポリエステルフレキシブルシート等の円盤１６を
取付は固定するチャック１７が設けてあり、上記回転軸
１５をそのプーリー１８とベルト１９を介してモータ２
０により回転する。回転軸１５は、モータ２１により回
転するカム２２の溝２３に、回転軸１５の端末で自由に
回転する回転子２４に設けたピン２５が係合して、モー
タ２１により回転軸１５が点線１５’の位置まで移動す
る。点線１５′の位置で円盤１６を回転軸１５′に挿入
し、チャック１７で固定する。次にモータ２１が回り、
円盤１６は実線１５の位置に移動する。円盤１６の外周
付近に設けた輪状のトレン受樋２６の下部にドレイン排
出パイプ２７が設けである。又上部にパイプ２８がある
。ドレインパイプ２７に排出ポンプ２９が連結されてい
る。輪状樋２６の外側にマグネソトピボソト３０及び塗
料管ピボ一
ソト３１がある。This spin coating is performed by a chuck 17 that attaches and fixes a disk 16, such as an aluminum substrate with a diameter of about 10 inches or a polyester flexible sheet with a diameter of 8 inches, to a rotating shaft 15 that is horizontally supported by a rotating bearing 14. is provided, and the rotating shaft 15 is connected to the motor 2 via its pulley 18 and belt 19.
Rotates by 0. The rotating shaft 15 is configured such that a pin 25 provided on a rotor 24 that freely rotates at the end of the rotating shaft 15 engages with a groove 23 of a cam 22 rotated by a motor 21, so that the rotating shaft 15 is rotated by the motor 21 as shown in dotted line 15. 'Move to the position. The disk 16 is inserted into the rotating shaft 15' at the position indicated by the dotted line 15' and fixed with a chuck 17. Next, the motor 21 rotates,
The disk 16 moves to the position indicated by the solid line 15. A drain discharge pipe 27 is provided at the bottom of a ring-shaped drain gutter 26 provided near the outer periphery of the disk 16. There is also a pipe 28 at the top. A discharge pump 29 is connected to the drain pipe 27. On the outside of the annular gutter 26, there is a magneto pivot 30 and a paint pipe pivot 31.
マグネソトピボノト３０を中心に回動するアーム３２に
マグネット３３を設ける。マグネット３３は交流コイル
式、直流マグネット式のいずれでもよい。A magnet 33 is provided on an arm 32 that rotates around a magnetostopibonoto 30. The magnet 33 may be either an AC coil type or a DC magnet type.
此のマグネット３３ば円盤１６の両側にはさむ様に設け
られ、アーム３２を回動するモータ３４により振這する
。This magnet 33 is provided so as to be sandwiched between both sides of the disk 16, and is oscillated by a motor 34 that rotates the arm 32.
塗料管ピボット３１にはこれを中心に振遥する塗料管３
５が円盤１６の両側にはさみ込む様に配置され、その吐
口３６が円盤１６のほぼ半径方向にモータ３７により移
動する。吐口３６の手前にリモコン式ノズル開閉バルブ
３８を設ける。The paint pipe pivot 31 has a paint pipe 3 that swings around it.
5 are arranged so as to be sandwiched between both sides of the disc 16, and their discharge ports 36 are moved approximately in the radial direction of the disc 16 by a motor 37. A remote control nozzle opening/closing valve 38 is provided in front of the discharge port 36.
モータ２０．２１．３４．３７は夫々連動してシーフェ
ンス運動を起す様になっているが此の具体的手段は通常
の技術知識で行えるのでここでは詳記しない。又、リモ
コン式ノズル開閉バルブ３８も同様である。本装置の操
作は、円盤Ｉ６を前進位置の回転軸１５にチャック１７
で固定し、次にモータ２１により円盤１６を後退位置に
移動し、次にモータ２０により円盤１６を回転し、次に
モータ３７により吐口３６を円盤１６の外周から徐々に
回転中心に移動させ、此の間バルブ３８を開いて、コー
ティング塗料すなわちマグネティソクディスハージョン
１３を収めたタンク４０から送り管４１や送りポンプ４
２を経て送られたマグネティノクディスハージョン１３
を、振温する吐口３６により円盤１６の外周から順次内
側に向って吐出塗布しで行く。此の間円盤１６は回転し
ているからディスバージョンは遠心力により外周に押し
やられながら外周が厚く内周が薄いコーティングかなさ
れ、余分なディスバージョンは遠心力により輪状樋２６
の内側にたたきつけられ、ポンプ２９に引かれながらド
レインパイプ２７から排出される。The motors 20, 21, 34, and 37 are arranged to cause a sea fence movement in conjunction with each other, but since the specific means for this can be done with ordinary technical knowledge, it will not be described in detail here. The same applies to the remote control nozzle opening/closing valve 38. The operation of this device involves moving the disc I6 to the chuck 17 on the rotating shaft 15 in the forward position.
Then, the motor 21 moves the disc 16 to the retracted position, the motor 20 rotates the disc 16, and the motor 37 gradually moves the discharge port 36 from the outer periphery of the disc 16 to the center of rotation. During this time, the valve 38 is opened and the feed pipe 41 and the feed pump 4 are discharged from the tank 40 containing the coating material, that is, the magnetic dispersion 13.
Magnetinoku Dishersion 13 sent after 2
is applied sequentially from the outer periphery of the disk 16 toward the inside using the vibrating outlet 36. During this time, since the disk 16 is rotating, the dispersion is pushed to the outer periphery by centrifugal force, and the outer periphery is thicker and the inner periphery is coated with a thinner coating.
and is discharged from the drain pipe 27 while being pulled by the pump 29.
吐口３６はディスク１６の最内周まで来ると再び外側に
向って引返す。次にモータ３４によりマグネット３３が
ピボット３０を中心に円盤１６をはさむ様にディスク１
６の外側から内へ向けて振品し、マグネット３３の磁場
により円盤托のコーテイング面に一定方向のオリエンテ
ーションを与えた後、マグネット３３が内から外側へ出
る。このあとモータ２０が回転を停止し円盤１６が止り
モータ２１が作動し、カム２２が回転し、回転軸］５が
前方に移動し、チャック１７をはづして円盤１６を回転
軸１５から取外す。このあとコーティングされた熱硬化
性塗料を加熱硬化し、ポリシュ、ハーニソシュ、クリー
ニングなど表面仕上げを行ってディスク１６を完成する
本発明実施例である。When the discharge port 36 reaches the innermost circumference of the disk 16, it returns outward again. Next, the motor 34 causes the magnet 33 to sandwich the disc 16 around the pivot 30.
6 is shaken from the outside to the inside, and the magnetic field of the magnet 33 gives a certain orientation to the coated surface of the disk, and then the magnet 33 comes out from the inside to the outside. After this, the motor 20 stops rotating, the disc 16 stops, the motor 21 starts operating, the cam 22 rotates, the rotating shaft] 5 moves forward, and the chuck 17 is released to remove the disc 16 from the rotating shaft 15. . In this embodiment of the present invention, the coated thermosetting paint is then heated and cured, and the surface finishing such as polishing, harnessing, cleaning, etc. is performed to complete the disk 16.
第７図は塗料を熱可塑性バインダとメタル磁性体を使用
した場合の本発明実施例で、硬化後コーティング層４３
を有するディスク１６の両側を回転する加熱圧縮仕上ロ
ール４４と４５の間にはさみ鏡面仕上げカレンダを行う
本発明実施例を示す。FIG. 7 shows an embodiment of the present invention in which a thermoplastic binder and a metal magnetic material are used as the paint, and the coating layer 43 after curing is shown.
An embodiment of the present invention is shown in which a mirror finishing calender is performed by sandwiching between heating compression finishing rolls 44 and 45 rotating on both sides of a disk 16 having a disc 16 having a diameter of 16 mm.
本発明の他の実施例として熱硬化性バインダとメタル磁
性体を使った場合で、メタル磁性体の表面保護膜が破壊
しない８０〜１００℃で熱硬化する樹脂を使用する事と
、ポリッシュ、ハーニソシュの際にメタル表面の保護膜
が研磨でけずれても潤滑剤が空気と遮断するように潤滑
剤を塗布しながらポリッシュ、ハーニソシュを行う。As another embodiment of the present invention, when a thermosetting binder and a metal magnetic material are used, it is possible to use a resin that thermosets at 80 to 100 degrees Celsius so that the surface protective film of the metal magnetic material is not destroyed, and to polish and harnish the material. During polishing and polishing, apply lubricant so that even if the protective film on the metal surface is damaged by polishing, the lubricant will be isolated from the air.
前記スピンコーティングにおいて、バリウムフェライト
粒子１は薄い板状結晶であるが、コバルトあるいはさら
にアルミナの被覆により、板状結晶１のカドがとれて丸
くなり、そのためにオリエンテーション中は塗料１３中
で方向を変え、配向が改善され、又、エアバブルもなく
なり、充填率が」二り、出力が向上するのも本発明の効
果である。In the spin coating, the barium ferrite particles 1 are thin plate-shaped crystals, but by coating with cobalt or even alumina, the edges of the plate-shaped crystals 1 are removed and rounded, so that during orientation, the barium ferrite particles 1 change direction in the paint 13. Another effect of the present invention is that the orientation is improved, air bubbles are eliminated, the filling rate is increased, and the output is improved.
このために、従来不可能であったバリウムフェライトの
面内方向の長手オリエンテーションが始めて可能となっ
た。For this reason, longitudinal orientation in the in-plane direction of barium ferrite, which was previously impossible, became possible for the first time.
本発明は磁性粒子そのものと、バインダと混合したディ
スバージョンと、スパッタ用のエレメントと、コーティ
ング、スパッタ法等により得られた媒体、即ちテープや
フロッピー、リヂソドディスク等などすべて本発明に含
まれるものである。The present invention includes magnetic particles themselves, dispersion mixed with a binder, sputtering elements, and media obtained by coating, sputtering, etc., such as tapes, floppies, rigid disks, etc. .
第８図に示すように、本発明は従来のあらゆる磁性体よ
り記録密度が高く、短波長に於ける出力は公知の如何な
る磁性体より高い事が実験により証明された。As shown in FIG. 8, it has been experimentally proven that the present invention has a higher recording density than any conventional magnetic material, and the output at short wavelengths is higher than any known magnetic material.
なお、保磁力は本発明素子の鉄原子の一部をコバルトと
チタンで置換することにより、肚を２０から２００など
、出力とオーバーライドのバランスの一〇−
良い必要な値に調整することができる。By replacing some of the iron atoms in the element of the present invention with cobalt and titanium, the coercive force can be adjusted to a required value such as 20 to 200, which provides a good balance between output and override. .
本発明素子の保磁力の温度特性は本発明素子が一軸性異
方性の板状粒子であるため他の媒体と異なり、正の値で
ある。The temperature characteristic of the coercive force of the element of the present invention is a positive value, unlike other media, since the element of the present invention is a plate-like particle with uniaxial anisotropy.
これに負の温度特性のコバルトが加わり、温度特性を０
に近づけることができるのでコーテイング後に硬化加熱
させても、スクエア・レシオが低下しない長所がある。Cobalt, which has negative temperature characteristics, is added to this, reducing the temperature characteristics to 0.
It has the advantage that the square ratio does not decrease even if it is heated for curing after coating.
なお、本発明磁性粒子のアルミナの被着は、本発明素子
のコハルｉ−被着を化学的に保護し、且つ塗膜になじん
で良く分散するとともに塗膜に強く何着する。The alumina adhesion of the magnetic particles of the present invention chemically protects the cohal i-adhesion of the element of the present invention, blends well with the coating film, disperses well, and adheres strongly to the coating film.
又、塗膜のエポキシ樹脂やアクリル樹脂等への触媒作用
のために塗膜強度が高くなる。Furthermore, the strength of the coating film increases due to the catalytic action on the epoxy resin, acrylic resin, etc. of the coating film.
このために塗膜中の磁性粒子の含有率を、塗膜強度を低
下させることなく増大させることができて記録密度が高
くなり、且つエラーが少なくなる。Therefore, the content of magnetic particles in the coating film can be increased without reducing the strength of the coating film, resulting in higher recording density and fewer errors.
従来の磁性粉は針状であり、塗布方向に粒子配向が生じ
るため再生出力に回転周期のモジュレーションが見られ
るが、本発明媒体の場合は磁性粒子のカドがとれている
のでディスクヘッド回転方向に粒子配向ムラが生ぜず、
再生出力のモジュレションがないことも長所である。Conventional magnetic powder has an acicular shape, and because particle orientation occurs in the direction of application, modulation of the rotational period can be seen in the playback output.However, in the case of the media of the present invention, the edges of the magnetic particles are removed, so that the particles are oriented in the direction of rotation of the disk head. No uneven particle orientation,
Another advantage is that there is no modulation of the playback output.
本発明媒体表面はコバルトやアルミナ被着により公知の
ものより平滑となる事が実験で確かめられた。It has been confirmed through experiments that the surface of the media of the present invention is smoother than known media due to the adhesion of cobalt and alumina.
又本発明媒体は加圧減磁の現象がなく、記録はヘッドク
ラッシュなど機械的応力に対しても安定である。Furthermore, the medium of the present invention does not undergo the phenomenon of pressure demagnetization, and recording is stable even against mechanical stress such as head crash.
又、保磁力はＨｃ １０以上であれば任意の値を選ぶこ
とができるので、フェライトヘッドで記録できる程度の
低い保磁力で高い密度の短波長記録ができるのも特長で
ある。Further, since the coercive force can be selected to any value as long as Hc is 10 or more, another feature is that high-density, short-wavelength recording can be performed with a coercive force as low as that which can be recorded with a ferrite head.
本発明媒体と、これを５０℃９０％Ｒ１＋の環境に１週
間放置したものを室温保存した媒体について電磁変換特
性の比較を行った結果、有意差がある特性変化は認めら
れなかった。媒体の表面観察、磁気特性測定その他の媒
体物性測定においても特性変化は見られず、高湿高温に
対しても安定である事が確かめられた。As a result of comparing the electromagnetic conversion characteristics of the medium of the present invention and a medium that was left in an environment of 50° C. and 90% R1+ for one week and stored at room temperature, no significant change in characteristics was observed. No change in characteristics was observed in surface observation of the medium, measurement of magnetic properties, and other measurements of the physical properties of the medium, and it was confirmed that it is stable even under high humidity and high temperature.
以上のごとく本発明の磁性粒子は平均粒径約０．１ μ
ｍであり、コバルト１アルミナ等被着による高密度充填
と薄層化により高密度記録ができ、Ｉ］ｃを６５０〜１
２００として広範囲の波長の出力向上が可能となった。As described above, the magnetic particles of the present invention have an average particle diameter of about 0.1 μm.
m, and high-density recording is possible by high-density packing and thinning of the layer by adhering cobalt-1 alumina, etc., and I]c is 650 to 1.
200, it has become possible to improve output over a wide range of wavelengths.
前記実施例の他本発明他の実施例として、第９図のごと
く、コバルト粒子４６をハリュウムフエライ１〜４７で
被着し、又は第１０図のごとく、メタル（純鉄）４８に
ハリュウムフェライ］・４７を被着させてもよい。In addition to the above embodiment, as another embodiment of the present invention, cobalt particles 46 are coated with halium ferrites 1 to 47 as shown in FIG. 9, or metal (pure iron) 48 is coated with cobalt particles as shown in FIG. 47 may be applied.
以」二の本発明実施例は被着等で結合させた例であるが
、次に混合などで共存させた本発明実施例を述べる。即
ち、コバルト、アルミナ等を被着させない本発明実施例
である。The following second embodiment of the present invention is an example in which the materials are bonded by adhesion or the like, but next we will describe an embodiment of the present invention in which they are made to coexist by mixing or the like. That is, this is an embodiment of the present invention in which cobalt, alumina, etc. are not deposited.
第１１図はディスバージョン４９中にハリュウムフェラ
イト１とメタル（純鉄）４８にシリカ、酸化鉄アルミナ
など保護被膜５０をつけたもの５１をバインダ５２中に
混合分散して磁性層とした本発明実施例である。FIG. 11 shows the present invention in which halium ferrite 1 and metal (pure iron) 48 coated with a protective coating 50 such as silica, iron oxide alumina, etc. 51 are mixed and dispersed in a binder 52 in a disversion 49 to form a magnetic layer. This is an example.
ハリュウムフエライｌ−１はスピンコーティングの場合
遠心力により立つのでコーティングにエアバブルが生ず
る。これを前記メタル粒子４８を混合する事によりエア
バブルが発生しない事を実験により確かめられた。In the case of spin coating, halium ferrite 1-1 stands up due to centrifugal force, so air bubbles are generated in the coating. It has been confirmed through experiments that air bubbles are not generated by mixing this with the metal particles 48.
第１１図の本発明により第８図の如く低周波で出力が高
く短波長まで延び、コバルト酸化鉄、メタルスパッタ、
ハリュウムフェライトより高性能を有する優れた媒体を
得る事が出来る。According to the present invention shown in FIG. 11, the output is high at low frequencies and extends to short wavelengths as shown in FIG. 8.
An excellent medium with higher performance than halium ferrite can be obtained.
前記のＧｏ単体は、Ｆｅ、 Ｃｒ単体あるいはＣｏ、
Ｆｅ。The above Go alone is Fe, Cr alone or Co,
Fe.
Ｃｒの酸化物等とすることもできる。It may also be an oxide of Cr.
本発明はコーティング法、スパッタリング法、プレイテ
ィング法のいずれの場合も含まれる。The present invention includes any of the coating method, sputtering method, and plating method.
又、本発明は面内磁気記録のみならず垂直磁気記録の場
合も含むものである。Further, the present invention includes not only longitudinal magnetic recording but also perpendicular magnetic recording.
本発明はリジントディスク、フロッピーディスク、ビデ
オテープ、ＤＡＴテープなどの記録体をも含むものであ
る。The present invention also includes recording media such as resinous disks, floppy disks, video tapes, and DAT tapes.
本発明は次のごとき効果を有する。The present invention has the following effects.
本発明は、強磁性金属と、マグネトプランバイトとを結
合し、あるいは共存させることにより、コバルト等被覆
による出力増加と、コバルト等被覆によるハリウ１、フ
ェライ１−等の六方晶に丸味を帯びさせて、単体容積当
りの粒子の充填率を上げる事による出力増加と、オリエ
ンテーションが改善される事による出力増加と、ヒント
シフトの直立高密化、さらにアルミナコーティングによ
るバインダーとの結合強化と、分散が良くなる事による
ノイズ低下と、コーティング膜強度用人ができるので、
出力が高く且つ高密度記録ができ、耐久性の強い媒体を
得られ水平磁化方式媒体としても良いし、垂直磁化方式
媒体としても良い記録体を得る事が出来る。The present invention combines or coexists with a ferromagnetic metal and magnetoplumbite, thereby increasing the output by coating with cobalt, etc., and rounding the hexagonal crystals of Hariu 1, Ferrai 1-, etc. by coating with cobalt, etc. The output is increased by increasing the filling rate of particles per unit volume, the output is increased by improving the orientation, the tip shift is made more upright, and the bond with the binder is strengthened by alumina coating, and the dispersion is improved. This reduces noise and improves coating film strength.
It is possible to obtain a medium with high output, high density recording, and strong durability, and it is possible to obtain a recording body that is good as a horizontal magnetization type medium or a perpendicular magnetization type medium.
（１）ハリュウムフェライト磁性体よりは出力が高い。(1) Higher output than halium ferrite magnetic material.
（２）スピンコーティング時にハリュウムフェライＩ・
の場合のエアバブルが生しない。(2) During spin coating, halium ferrite I.
Air bubbles do not occur in the case of
（３）酸化鉄、ハリュウムフエライト、コバルト酸化鉄
、メタル磁性体よりも高い充填率が得られる。(3) A higher filling rate can be obtained than iron oxide, halium ferrite, cobalt iron oxide, and metal magnetic materials.
（４）ハリュウムフェライＩ・よりも配向が容易。(4) Easier to align than halium ferrite I.
（５）ハリュウムフェライトでＨｃを上げた時のオハラ
イト問題が発生しない（Ｈｃを低くして高出力を得られ
る）。(5) The ohalite problem does not occur when Hc is increased with halium ferrite (high output can be obtained by lowering Hc).
（６）ヘッドがサチュレイトしない。(6) The head does not saturate.
（７）フェライトヘッドが使用できる程度の低保磁力で
高密度記録ができ、広い記録密度範囲で高い再生出力が
得られる。(7) High-density recording is possible with a coercive force low enough to use a ferrite head, and high reproduction output can be obtained over a wide recording density range.
（８）保持力の値は用途に合わせて任意に設定でき、新
しい用途に対し最適の保磁力設定が可能で、他の磁気記
録媒体との互換に対処しうる。(8) The value of the coercive force can be arbitrarily set according to the application, and the optimum coercive force can be set for a new application, and compatibility with other magnetic recording media can be achieved.
（９）コーティング法でスパッタと匹敵する高電磁変換
特性が得られ、且つ而（久性、耐ヘツド軟性、スタート
スＩ・ノブ特性等機械特性がスパッタディスクより優れ
たものを得られる。(9) High electromagnetic conversion characteristics comparable to those of sputtering can be obtained by the coating method, and mechanical properties (such as durability, head flexibility resistance, start I/knob characteristics, etc.) are superior to those of sputter disks.
００）水平磁化記録体でも垂直磁化記録体でも適用でき
る。00) It can be applied to both horizontal magnetization recording bodies and perpendicular magnetization recording bodies.
０１）量産に適し、大量供給でき、コストが安い。01) Suitable for mass production, can be supplied in large quantities, and has low cost.
叫化学的にも物理的にも安定であり、記録状態は機械的
応力に対し安定である。繰返し再生に対しても安定であ
る。It is chemically and physically stable, and the recording state is stable against mechanical stress. It is also stable against repeated playback.
０３）円形のディスクを用いた場合に、回転周期のモジ
ュレーションがない。03) When using a circular disk, there is no modulation of the rotation period.
Ｑ４１加熱しても安定であるので通常低下するスクエア
・レシオを９．６など高く維持する事が出来る。Q41 is stable even when heated, so the square ratio, which normally decreases, can be maintained as high as 9.6.
第１図はマグネトプランバイト結晶の斜視図第２図より
第１１図までは本発明実施例を示し、第２図はスピンコ
ーティングを示す正面図第３図は本発明第１実施例の一
部断面工程図第４図は本発明第２実施例の断面図
第５図はディスク記録体の製造装置の正面図第６図は第
５図の一部断面を示す側面図第７図はディスクの仕上を
示す一部断面側面図第８図は記録体の特性グラフ
第９図は本発明他の実施例の断面図
第１０図は本発明他の実施例の断面図
第１１図も本発明他の実施例の断面図FIG. 1 is a perspective view of a magnetoplumbite crystal. FIGS. 2 to 11 show embodiments of the present invention. FIG. 2 is a front view showing spin coating. FIG. 3 is a part of the first embodiment of the present invention. 4 is a sectional view of the second embodiment of the present invention. FIG. 5 is a front view of the disk recording body manufacturing apparatus. FIG. 6 is a side view showing a partial cross section of FIG. 5. FIG. 8 is a partial cross-sectional side view showing the finish. FIG. 8 is a characteristic graph of the recording medium. FIG. 9 is a cross-sectional view of another embodiment of the present invention. FIG. 10 is a cross-sectional view of another embodiment of the present invention. Cross-sectional view of the embodiment of
Claims (1)
など稀土類元素、クローム，磁性合金ＦｅＣｏ，ＣｒＯ
＿２など元素又は合金と、ＡＦｅ＿（＿１＿２＿−＿ｘ
＿）Ｍ＿ｘＯ＿１＿９（ただしＡは，Ｂａ，Ｓｒ，Ｐｂ
から選ばれた１種以上の元素を、ＭはＩｎ，Ｚｎ−Ｇｅ
，Ｚｎ−Ｎｂ，Ｚｎ−Ｖ，Ｃｏ−Ｔｉ，Ｃｏ−Ｇｅの１
種以上の置換元素又は元素の組合せを、またｘは１〜２
．５の正の数をそれぞれ表す）を含むマグネトプランバ
イトとを、被着等結合、又は共存した事、を特徴とする
磁性元素共存マグネトプランバイト高密度高出力記録体
。Iron elements such as Fe, Co, Ni, Gd, Tb, Te,
Rare earth elements such as chromium, magnetic alloys FeCo, CrO
Elements or alloys such as _2 and AFe_(_1_2_-_x
_) M_xO_1_9 (A is Ba, Sr, Pb
M is In, Zn-Ge, and one or more elements selected from
, Zn-Nb, Zn-V, Co-Ti, Co-Ge 1
more than one substituent element or combination of elements, and x is 1 to 2
．． 1. A high-density, high-output recording material containing a magnetic element coexisting magnetoplumbite, characterized in that the magnetoplumbite containing a magnetic element (each representing a positive number of 5) is adhered to, bonded with, or coexisted with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63182812A JPH0786975B2 (en) | 1988-07-23 | 1988-07-23 | Magnetoplanbite coexisting with magnetic elements ▲ High ▼ Density ▲ High ▼ Output recording material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63182812A JPH0786975B2 (en) | 1988-07-23 | 1988-07-23 | Magnetoplanbite coexisting with magnetic elements ▲ High ▼ Density ▲ High ▼ Output recording material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0233723A true JPH0233723A (en) | 1990-02-02 |
| JPH0786975B2 JPH0786975B2 (en) | 1995-09-20 |
Family
ID=16124873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63182812A Expired - Lifetime JPH0786975B2 (en) | 1988-07-23 | 1988-07-23 | Magnetoplanbite coexisting with magnetic elements ▲ High ▼ Density ▲ High ▼ Output recording material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0786975B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5931948A (en) * | 1982-07-23 | 1984-02-21 | チバ―ガイギー アクチエンゲゼルシヤフト | Photoresist |
| JPS5968733A (en) * | 1982-09-13 | 1984-04-18 | チバ―ガイギー アクチエンゲゼルシヤフト | Photoresist |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5018007A (en) * | 1973-06-20 | 1975-02-26 | ||
| JPS59172148A (en) * | 1983-03-18 | 1984-09-28 | Hitachi Maxell Ltd | Magnetic recording medium |
-
1988
- 1988-07-23 JP JP63182812A patent/JPH0786975B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5018007A (en) * | 1973-06-20 | 1975-02-26 | ||
| JPS59172148A (en) * | 1983-03-18 | 1984-09-28 | Hitachi Maxell Ltd | Magnetic recording medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5931948A (en) * | 1982-07-23 | 1984-02-21 | チバ―ガイギー アクチエンゲゼルシヤフト | Photoresist |
| JPS5968733A (en) * | 1982-09-13 | 1984-04-18 | チバ―ガイギー アクチエンゲゼルシヤフト | Photoresist |
| JPH052979B2 (en) * | 1982-09-13 | 1993-01-13 | Ciba Geigy |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0786975B2 (en) | 1995-09-20 |
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