JPH01258224A - Grinding and cleaning method for magnetic recording medium - Google Patents

Grinding and cleaning method for magnetic recording medium

Info

Publication number
JPH01258224A
JPH01258224A JP8561988A JP8561988A JPH01258224A JP H01258224 A JPH01258224 A JP H01258224A JP 8561988 A JP8561988 A JP 8561988A JP 8561988 A JP8561988 A JP 8561988A JP H01258224 A JPH01258224 A JP H01258224A
Authority
JP
Japan
Prior art keywords
cleaning
roll
magnetic recording
polishing
recording medium
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
Application number
JP8561988A
Other languages
Japanese (ja)
Inventor
Takayuki Iwase
岩瀬 孝之
Shuji Nakada
中田 周二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP8561988A priority Critical patent/JPH01258224A/en
Publication of JPH01258224A publication Critical patent/JPH01258224A/en
Pending legal-status Critical Current

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  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To prevent dust from being generated and grinding dust from being stuck again and to reduce production cost by executing grinding with a grinding roll or a grinding tape, whose surface roughness is >=0.6mum, and after that, removing the grinding dust with a cleaning roll, whose surface roughness is <=0.5mum. CONSTITUTION:Since a magnetic recording medium is ground by the grinding roll, whose surface is comparatively rough and surface roughness is >=0.6mum, fine projection, etc., is satisfactorily cut. Since the grinding dust is removed by the shearing power of the cleaning roll, whose surface roughness is <=0.5mum and surface is comparatively smooth, the recording medium is securely cleaned. Since the cleaning roll does not generate the dust from itself and the grinding dust is hardly stuck to a roll surface, unconvenience such as to scratch the surface of the magnetic recording medium is not generated. Since the cleaning can be executed over a long time once the cleaning roll is provided, the cost of a cleaning means can be reduced.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は磁気記録媒体の表面を研磨手段によって研磨し
た後、媒体表面に付着した研磨屑を除去するクリーニン
グを行なう磁気記録媒体の研磨クリーニング方法に関す
るものである。
Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for polishing and cleaning a magnetic recording medium, in which the surface of the magnetic recording medium is polished by a polishing means, and then cleaning is performed to remove polishing debris attached to the surface of the medium. It is related to.

(従来の技術) 周知のように、非磁性支持体上に磁性層が形成されてな
る磁気記録媒体はオーディオ、ビデオ。
(Prior Art) As is well known, magnetic recording media in which a magnetic layer is formed on a non-magnetic support are used in audio and video.

コンピューター用等に広く用いられている。Widely used for computers, etc.

上記磁気記録媒体は、通常ポリエチレンテレフタレート
等の非磁性支持体上に、強磁性粉末と結合剤、潤滑剤、
非磁性粉末、有機溶媒等からなる磁性塗料を塗布するこ
とにより上記磁性層が形成され、磁性層形成後、該磁性
層に対して磁場配向処理、乾燥処理、カレンダー処理等
が施され、所望の形状に裁断されることにより製造され
る。
The above magnetic recording medium is usually made of ferromagnetic powder, a binder, a lubricant, etc. on a non-magnetic support such as polyethylene terephthalate.
The above-mentioned magnetic layer is formed by applying a magnetic paint made of non-magnetic powder, organic solvent, etc. After forming the magnetic layer, the magnetic layer is subjected to magnetic field orientation treatment, drying treatment, calendering treatment, etc. to obtain the desired shape. Manufactured by cutting into shapes.

ところで上記のようにして製造された磁気記録媒体の磁
性層表面は、磁性層中の粒状成分の一部が浮き上って微
小突起となる場合があり、このような突起や、磁性層上
に付着するゴミ等により磁性層の平滑性が損われると良
好なヘッドタッチが得られなくなり、ドロップアウトを
発生させる原因となる。また、上記のように突起が生じ
た状態のまま、金属ロールと弾性ロールにより磁気記録
媒体を加圧挾持してその表面を平滑化する、上記カレン
ダー処理を行なうと、上記微小突起等が金属ロールや弾
性ロールに付着したり、めり込んだりするため、これら
のロールの表面に凹凸が生じ、十分なカレンダー効果が
得られなくなるという不都合がある。
By the way, on the surface of the magnetic layer of the magnetic recording medium manufactured as described above, some of the granular components in the magnetic layer may rise to form minute protrusions, and such protrusions and other particles may appear on the magnetic layer. If the smoothness of the magnetic layer is impaired by adhering dust or the like, a good head touch cannot be obtained, causing dropouts. In addition, when the above-mentioned calendering process is performed, in which the magnetic recording medium is held under pressure between a metal roll and an elastic roll to smooth the surface while the protrusions are still formed, the minute protrusions, etc. are removed from the metal roll. Since the calender adheres to or sinks into the elastic rolls, the surfaces of these rolls become uneven, which is disadvantageous in that a sufficient calendering effect cannot be obtained.

そこで、上記カレンダー処理に先立って磁性層表面の突
起を除去するために、磁気記録媒体表面に、周面に微小
突起を有する回転する研磨ロール、または一定方向に走
行する研磨テープを接触させて、磁性層表面を切削研磨
するとともに、磁性層表面に不織布を接触させて研磨工
程で生じた研磨屑を拭き取る方法が既に提案されている
(特願昭61−77598号)。
Therefore, in order to remove the protrusions on the surface of the magnetic layer prior to the above-mentioned calendar treatment, a rotating polishing roll having minute protrusions on the circumferential surface or a polishing tape running in a fixed direction is brought into contact with the surface of the magnetic recording medium. A method has already been proposed in which the surface of the magnetic layer is cut and polished and at the same time a nonwoven cloth is brought into contact with the surface of the magnetic layer to wipe off polishing debris generated in the polishing process (Japanese Patent Application No. 77598/1982).

(発明が解決しようとする課題) しかしながら、上記のように不織布を用いて研磨屑の除
去を行なうと、不織布がとり込んだ研磨屑が磁性層表面
に再付着したり、不織布自体の繊維屑が磁性層表面に付
着するため、思うようなりリーニング効果をあげること
ができないとともに、不織布がとり込んだ研磨屑により
磁性層表面に擦傷が付く場合がある。さらに、不織布は
絶えず新しい面が磁性層と接するように送り出されなけ
れ゛ばならないので不織布のために磁気記録媒体の製造
コストが上昇するといった問題もある。
(Problem to be Solved by the Invention) However, when removing abrasive debris using a nonwoven fabric as described above, the abrasive debris taken in by the nonwoven fabric may re-adhere to the surface of the magnetic layer, or the fiber debris of the nonwoven fabric itself may Since it adheres to the surface of the magnetic layer, it is not possible to achieve the desired leaning effect, and the surface of the magnetic layer may be scratched by polishing debris taken in by the nonwoven fabric. Furthermore, since the nonwoven fabric must be continuously fed out so that a new surface comes into contact with the magnetic layer, there is also the problem that the manufacturing cost of the magnetic recording medium increases due to the nonwoven fabric.

本発明は上記の問題点に鑑みてなされたものであり、磁
気記録媒体を研磨した後、研磨屑を確実かつ客側な手段
により除去することのできる磁気記録媒体の研磨クリー
ニング方法を提供することを目的とするものである。
The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a method for polishing and cleaning a magnetic recording medium, which can reliably remove polishing debris by customer-side means after polishing the magnetic recording medium. The purpose is to

(課題を解決するための手段) 本発明の磁気記録媒体の研磨クリーニング方法は、磁気
記録媒体の表面を、表面粗さ(Ra)が0.6μm以上
の、回転する研磨ロールまたは所定の方向に搬送される
研磨テープにより研磨した後、表面粗さ(Ra)が0.
5μm以下の回転するクリーニングロールを前記磁気記
録媒体の前記表面に接触させて該表面に付着した研磨屑
をせん断力により除去することを特徴とするものである
(Means for Solving the Problems) A method for polishing and cleaning a magnetic recording medium of the present invention is to polish the surface of a magnetic recording medium by rotating a rotating polishing roll having a surface roughness (Ra) of 0.6 μm or more or in a predetermined direction. After polishing with the conveyed polishing tape, the surface roughness (Ra) is 0.
This method is characterized in that a rotating cleaning roll with a diameter of 5 μm or less is brought into contact with the surface of the magnetic recording medium to remove polishing debris adhering to the surface by shearing force.

上記方法によれば、磁気記録媒体は比較的表面の粗い研
磨ロールにより研磨されるので表面に生じていた微小突
起等は良好に切削研磨される。また、磁気記録媒体表面
に付着した研磨屑は比較的表面が滑らかなりリーニング
ロールによってぜん断力により除去されるので、該表面
は確実にクリーニングされるとともに、かかるクリーニ
ングロールはそれ自体からの発塵がなく、また研磨屑が
クリーニングロール表面に付着することもほとんどない
ので、研磨屑等が再度磁気記録媒体表面に付着したり、
クリーニング手段に付着した研磨屑により磁気記録媒体
に傷が付くといった不都合は生じない。また、−旦クリ
ーニングロールを設ければ長期間に亘って同一ロールに
よりクリーニングを行なうことができるので、クリーニ
ング手段のコストを低減することができる。
According to the above method, since the magnetic recording medium is polished by a polishing roll with a relatively rough surface, minute protrusions and the like that have formed on the surface are successfully cut and polished. In addition, polishing debris attached to the surface of the magnetic recording medium becomes relatively smooth and is removed by shearing force by the leaning roll, so the surface is reliably cleaned, and the cleaning roll removes dust from itself There is no chance of polishing debris adhering to the surface of the cleaning roll.
Inconveniences such as scratches on the magnetic recording medium due to polishing debris adhering to the cleaning means do not occur. Moreover, once a cleaning roll is provided, cleaning can be performed using the same roll for a long period of time, so the cost of the cleaning means can be reduced.

(具 体 例) 以下、図面を参照して本発明の具体例について説明する
(Specific Examples) Hereinafter, specific examples of the present invention will be described with reference to the drawings.

図は本発明の一具体例による磁気記録媒体の研磨クリー
ニング方法を実施する装置の概略図である。
The figure is a schematic diagram of an apparatus for carrying out a polishing and cleaning method for a magnetic recording medium according to an embodiment of the present invention.

非磁性支持体上に磁性層が形成されてなるウェブ状の磁
気記録テープ1は、図示しないテープ巻取手段およびテ
ープ送り出し手段により、所定の送り速度で図中矢印で
示す方向に走行せしめられ、研磨ゾーン10、クリーニ
ングゾーン20、カレンダーゾーン30を順次通過せし
められる。
A web-like magnetic recording tape 1 having a magnetic layer formed on a non-magnetic support is made to travel in the direction indicated by an arrow in the figure at a predetermined feeding speed by a tape winding means and a tape feeding means (not shown). It passes through a polishing zone 10, a cleaning zone 20, and a calendar zone 30 in this order.

上記研磨ゾーン■0には、表面粗さ(Ra)が0.6μ
m以上の回転する2つの研磨ロール11と、磁気記録テ
ープ1をこれらの研磨ロール11に所定のラップ角で接
触させる複数の押し付はロール12が設けられている。
The polishing zone ■0 has a surface roughness (Ra) of 0.6μ.
Two polishing rolls 11 rotating at a rotation speed of m or more, and a plurality of pressing rolls 12 for bringing the magnetic recording tape 1 into contact with these polishing rolls 11 at a predetermined wrap angle are provided.

なお、本実施例において、磁気記録テープ1は、上記2
つの研磨ロール11により磁性層表面と非磁性層支持体
表面の両面をそれぞれ研磨されるようになっている。上
記研磨ロール11の回転方向は磁気記録テープの走行方
向と同じ方向であっても逆の方向であってもよく、また
好ましい回転速度は磁気記録テープ1の走行速度に応じ
て変化する。研磨ゾーン10内を走行する磁気記録テー
プ1は、回転する研磨ロール11によりその両面を研磨
され、表面の微小突起や付着物が除去される。なお、研
磨ロールの代りに同様の表面特性を有し、所定の方向に
走行する研磨テープを用いて研磨を行なってもよい。
In addition, in this embodiment, the magnetic recording tape 1 is
Two polishing rolls 11 are used to polish both the surface of the magnetic layer and the surface of the nonmagnetic layer support, respectively. The rotating direction of the polishing roll 11 may be the same as or opposite to the running direction of the magnetic recording tape, and the preferred rotation speed changes depending on the running speed of the magnetic recording tape 1. The magnetic recording tape 1 running in the polishing zone 10 has both surfaces polished by a rotating polishing roll 11 to remove minute protrusions and deposits on the surface. Incidentally, instead of the polishing roll, polishing may be performed using a polishing tape having similar surface characteristics and running in a predetermined direction.

一方、前記クリーニングゾーン20には、表面粗さ(R
a )が0.5μm以下の回転する2つのクリーニング
ロール21と、磁気記録テープ1をこれらのクリーニン
グロール21に所定のラップ角で接触させる複数の押し
付はロール22が設けられている。
On the other hand, the cleaning zone 20 has surface roughness (R
Two rotating cleaning rolls 21 having a diameter of 0.5 μm or less and a plurality of pressing rolls 22 for bringing the magnetic recording tape 1 into contact with these cleaning rolls 21 at a predetermined wrap angle are provided.

また上記2つのクリーニングロール21は、図示のよう
に記記録媒体の磁性層表面と非磁性層支持体表面をそれ
ぞれクリーニングするように配設されている。また、こ
れらのクリーニングロール21の周囲には、該ロール表
面にエアを吹きつけるエアノズル23と、クリーニング
ロール21表面のエアを吸引する吸引手段24がそれぞ
れ配されている。さらにクリーニングゾーン全体が、内
部のエアを図中矢印方向に吸引する手段を有するケーシ
ング25により覆われている。このクリーニングゾーン
20において、前述した研磨時に磁気記録テープの両面
に付着した研磨屑は、回転するクリーニングロール21
と接触してせん断力により除去される。なおりリーニン
グロール21の回転方向は磁気記録テープ1の走行方向
と同じ方向であってもよいし逆の方向であってもよい。
Further, the two cleaning rolls 21 are arranged to clean the magnetic layer surface and the nonmagnetic layer support surface of the recording medium, respectively, as shown in the figure. Further, around these cleaning rolls 21, air nozzles 23 that blow air onto the surfaces of the rolls and suction means 24 that suck air from the surfaces of the cleaning rolls 21 are arranged, respectively. Further, the entire cleaning zone is covered by a casing 25 having means for sucking the air inside in the direction of the arrow in the figure. In this cleaning zone 20, polishing debris attached to both sides of the magnetic recording tape during the polishing described above is removed by a rotating cleaning roll 21.
is removed by shearing force. The rotation direction of the leaning roll 21 may be the same direction as the running direction of the magnetic recording tape 1, or may be the opposite direction.

またクリーニングロール21は比較的表面が滑かなもの
であるので、磁気記録テープから除去された研磨屑がク
リーニングロールに付着するおそれはほとんどないが、
本実施例においてはクリーニングロールの周囲に上記エ
アノズルと吸引手段が配されているので、磁気記録テー
プから除去された研磨屑は確実に捕集される。さらに本
実施例ではクリーニングゾーン20全体を上述したよう
にケーシング25で覆ってクリーニングゾーン全体でも
吸引を行なっているので、研磨屑の捕集を行なう上で一
層効果的である。なお、クリーニングロール表面の研磨
屑の捕集は、上記のようなエアノズルや吸引手段により
行なう他に、クリーニングロール表面を常時または定期
的に不織布により拭き取ることにより行なってもよい。
In addition, since the cleaning roll 21 has a relatively smooth surface, there is little risk that polishing debris removed from the magnetic recording tape will adhere to the cleaning roll.
In this embodiment, the air nozzle and suction means are arranged around the cleaning roll, so that the polishing debris removed from the magnetic recording tape is reliably collected. Furthermore, in this embodiment, the entire cleaning zone 20 is covered with the casing 25 as described above, and suction is also performed in the entire cleaning zone, which is more effective in collecting polishing debris. In addition to collecting the polishing debris on the surface of the cleaning roll using an air nozzle or suction means as described above, it may also be performed by wiping the surface of the cleaning roll constantly or periodically with a nonwoven cloth.

また本実施例では前記研磨ゾーンlOにおいて、磁気記
録テープ1の両面に研磨を行なうようになっているので
、クリーニングロール21によるクリーニングもテープ
両面に対して行なう必要があるが、研磨は磁気記録テー
プの磁性層面のみに対して行なってもよく、その場合に
はクリーニングロールによるクリーニングも磁性層面に
対してのみ行なえばよい。
Further, in this embodiment, since both sides of the magnetic recording tape 1 are polished in the polishing zone IO, it is necessary to perform cleaning on both sides of the tape with the cleaning roll 21. The cleaning may be performed only on the surface of the magnetic layer, and in that case, cleaning with a cleaning roll may be performed only on the surface of the magnetic layer.

上記のようにクリーニングゾーン20においてクリーニ
ングの終了した磁気記録テープはカレンダーゾーン30
に搬送される。このカレンダーゾーンは、−例として3
本の金属ロール31と2本の弾性ロール32が縦方向に
交互に配され、これらのロールの間に磁気記録媒体を通
過させることにより、上記ロールによって磁気記録テー
プ1を加圧、加熱して該テープの表面の平滑化処理を行
なうちのである。なお図示の小径のロール33は、カレ
ンダー位置(金属ロール31と弾性ロール32の接触位
置)以外で磁気記録テープ1が金属ロール31や弾性ロ
ール32の表面に接して傷等がつくことを防止するため
のバスロールである。また磁気記録テープ1は、磁性層
表面の平滑度を特に高める必要があるので、磁性層側表
面が金属ロール31と接するようになっている。
As mentioned above, the magnetic recording tape that has been cleaned in the cleaning zone 20 is transferred to the calendar zone 30.
transported to. This calendar zone is - for example 3
A metal roll 31 and two elastic rolls 32 are arranged alternately in the vertical direction, and by passing a magnetic recording medium between these rolls, the magnetic recording tape 1 is pressurized and heated by the rolls. The surface of the tape is smoothed. The illustrated small-diameter roll 33 prevents the magnetic recording tape 1 from coming into contact with the surfaces of the metal roll 31 and the elastic roll 32 and being scratched at positions other than the calender position (the contact position between the metal roll 31 and the elastic roll 32). This is a bath roll. Further, since the magnetic recording tape 1 needs to have particularly high smoothness on the surface of the magnetic layer, the surface on the magnetic layer side is in contact with the metal roll 31.

磁気記録テープ1は上記カレンダー処理が行なわれるの
に先立ってクリーニング−ゾーン20において研磨屑の
除去が行なわれているので、カレンダーゾーン30では
各ローラの表面に異物が付着したりめり込んだりするお
それがなく、良好にカレンダー処理を行なうことができ
る。このようにカレンダーゾーン80を通過した磁気記
録は所定の幅に裁断された後、適宜巻取ロール等に巻き
取られる。
Since polishing debris is removed from the magnetic recording tape 1 in the cleaning zone 20 prior to the above-mentioned calendering process, there is a risk that foreign matter may adhere to or sink into the surface of each roller in the calendar zone 30. Calendar processing can be performed satisfactorily. The magnetic recording that has passed through the calendar zone 80 in this manner is cut into a predetermined width and then wound onto a winding roll or the like as appropriate.

以下、本発明による新規な効果について実施例と比較例
によって一層明確にする。
Hereinafter, the novel effects of the present invention will be further clarified through Examples and Comparative Examples.

(実施例1) 図示の装置において、幅500mの磁気記録テープを1
00711/n+inで走行させ、まずクリーニングゾ
ーンにおいて、金属質粉末をダイヤモンド粒子で固めた
メタル系ダイヤモンド砥石からなり、RaO,BμTn
  カットオフ0.25mm、 Rmax13.0μm
カットオフ0.25mm5直径50mであり、テープ走
行方向と逆方向に709rpI11で回転する研磨ロー
ルにラップ角5°で接触させて研磨を行なった。なお、
磁気記録テープの張力は2.5に9であった。
(Example 1) In the illustrated apparatus, a magnetic recording tape with a width of 500 m is
00711/n+in, first, in the cleaning zone, a metal diamond grinding wheel made of metal powder solidified with diamond particles is used.
Cutoff 0.25mm, Rmax 13.0μm
Polishing was carried out by bringing the tape into contact with a polishing roll having a cutoff of 0.25 mm and a diameter of 50 m and rotating at 709 rpI11 in the opposite direction to the tape running direction at a wrap angle of 5°. In addition,
The tension of the magnetic recording tape was 2.5 to 9.

上記磁気記録テープを、続いてクリーニンゾーンに送り
、該クリーニンゾーン内を張力5.OK!jにて走行さ
せ、ジルコニア系緻密質セラミックからなり、RaO,
SuRカットオフ0.25m、Rnax8.Ottm 
 カットオフ0.25m5直径50mであり、テープ走
行方向と逆方向に637rpiで回転するクリ−ニゲロ
ールにラップ角10°で接触させてせん断力により研磨
層のクリーニングを行なった。これとともにクリーニン
グロール表面にエアノズルによりエアを吹きつけ、吸引
圧力500 #IIIAQ 、吸引流量が10.017
13/minの吸引手段によりクリーニングロール表面
の吸引を行なった。
The magnetic recording tape is then sent to a cleaning zone where tension 5. OK! Made of zirconia-based dense ceramic, RaO,
SuR cutoff 0.25m, Rnax8. Ottm
The polishing layer was cleaned by shearing force by contacting it with a cleaning roll having a cutoff of 0.25 m and a diameter of 50 m and rotating at 637 rpm in the opposite direction to the tape running direction at a wrap angle of 10°. At the same time, air is blown onto the surface of the cleaning roll using an air nozzle, and the suction pressure is 500 #IIIAQ and the suction flow rate is 10.017.
The surface of the cleaning roll was suctioned at a rate of 13/min.

(実施例2) 上記実施例1におけるクリーニングロールを、ジルコニ
ア系緻密質セラミックからなり、RaO,3um  カ
ットオフ0.25m+++、Rmax2.0μm  カ
ットオフ0.25mmのロールに代え、他の条件はすべ
て同じにして研磨、クリーニングを行なった。
(Example 2) The cleaning roll in Example 1 above was replaced with a roll made of zirconia-based dense ceramic, RaO, 3um, cutoff 0.25m+++, Rmax 2.0μm, cutoff 0.25mm, all other conditions being the same. I did some polishing and cleaning.

(実施例3) 上記実施例1におけるクリーニングロールを、超硬から
なり、RaO,5μTrL  カットオフ0.25m。
(Example 3) The cleaning roll in Example 1 was made of carbide, RaO, 5μTrL, cutoff 0.25m.

Rmax2.0μm  カットオフ0.25mのロール
に代え、他の条件はすべて同じにして研磨、クリーニン
グを行なった。
Polishing and cleaning were performed using a roll with an Rmax of 2.0 μm and a cutoff of 0.25 m, with all other conditions being the same.

(実施例4) 実施例1におけるクリーニングロールを、超硬からなり
、RaO,2uTrL  カットオフ0.251111
1. Rlnaxl、0μm  カットオフ0.25I
wRのロールに代え、他の条件はすべて同じにして研磨
、クリーニングを行なった。
(Example 4) The cleaning roll in Example 1 was made of carbide and had a RaO, 2uTrL cutoff of 0.251111.
1. Rlnaxl, 0μm cutoff 0.25I
Polishing and cleaning were performed using a wR roll and keeping all other conditions the same.

(比較例1) 実施例1と同じ条件で磁気記録テープに研磨を行なった
後、上記テープに、日本バイリーン製#4000の不織
布を磁気記録テープの送り方向と逆方向に20InIR
/Ilnで走行させつつ接触させてクリーニングを行な
った。
(Comparative Example 1) After polishing a magnetic recording tape under the same conditions as in Example 1, a #4000 nonwoven fabric made by Nippon Vilene was applied to the tape in a direction opposite to the feeding direction of the magnetic recording tape.
Cleaning was carried out by contacting the vehicle while running at /Iln.

(比較例2) 上記比較例1における不織布の走行速度を60#lII
/a+Inに上げ、他の条件はすべて同じにして研磨。
(Comparative Example 2) The running speed of the nonwoven fabric in Comparative Example 1 was set to 60#lII.
/a+In, polishing with all other conditions the same.

クリーニングを行なった。I did some cleaning.

上記実施例1〜4、および比較例1.2により研磨、ク
リーニングされた磁気記録テープをカレンダー処理した
後、1/2インチ幅に裁断し、そのドロップアウト数と
擦傷の数をJJ定した。その結果を下記の表に示す。な
お、ドロップアウトの定義は一20dB以上の出力ダウ
ンで長さが15μs以上のものとし、1分間における発
生回数を測定した。また擦傷については、単位長さ(1
m)あたりに目視て確認できる擦傷の数をカウントした
The magnetic recording tapes polished and cleaned according to Examples 1 to 4 and Comparative Example 1.2 were calendered and then cut into 1/2 inch width pieces, and the number of dropouts and the number of scratches were determined by JJ. The results are shown in the table below. Note that dropout was defined as an output down of -20 dB or more and a length of 15 μs or more, and the number of occurrences in one minute was measured. In addition, for abrasions, the unit length (1
The number of scratches that could be visually confirmed around m) was counted.

また使用したデツキは松下電気(株)製のNV−820
0、ドロップアウト測定装置はJvCモデルVD−3M
である。
The deck used was NV-820 manufactured by Matsushita Electric Co., Ltd.
0. The dropout measuring device is JvC model VD-3M.
It is.

表 上記の結果から明らかなように、本発明方法による実施
例1〜4は、比較例1.2に比べてドロップアウトの数
が少なく、また擦傷は全く生じないなど、研磨およびク
リーニングが良好に行なわれたことが確かめられた。
As is clear from the results shown in the table above, Examples 1 to 4 using the method of the present invention had fewer dropouts and no scratches than Comparative Examples 1.2, resulting in better polishing and cleaning. It was confirmed that this was done.

また、本発明の研磨クリーニング方法は製品幅(−例と
して1/2イン4−)にスリットされた磁気記録テープ
に対して適用することもできる。また、本方法により研
磨、クリーニングされる磁気記録媒体は円盤状の磁気デ
ィスクシートであってもよい。その場合には研磨ロール
やクリーニングロ−ルを磁気ディスクシートの半径方向
に配置してシートに当接させ、各ロールとシートを共に
回転させればよい。
Further, the abrasive cleaning method of the present invention can also be applied to a magnetic recording tape that has been slit to a product width (for example, 1/2 in. 4 in.). Further, the magnetic recording medium to be polished and cleaned by this method may be a disk-shaped magnetic disk sheet. In that case, a polishing roll or a cleaning roll may be arranged in the radial direction of the magnetic disk sheet, brought into contact with the sheet, and each roll and the sheet may be rotated together.

(発明の効果) 以上詳細に説明したように、本発明の磁気記録媒体の研
磨クリーニング方法によれば、研磨後媒体表面に付着し
た研磨屑を回転するクリーニングロールによってせん断
力により除去するようにしたので、クリーニング手段か
らの発塵およびクリーニング手段への研磨屑の再付着を
防止することができ、磁気記録媒体のクリーニングを良
好に行なうことができる。また、上記クリーニングロー
ルは長期間に亘って使用可能であるので、不織布を用い
てクリーニングを行なう場合に比べ、ランニングコスト
を下げて磁気記録媒体の製造コストを低減させることも
できる。
(Effects of the Invention) As described above in detail, according to the method for polishing and cleaning a magnetic recording medium of the present invention, polishing debris adhering to the surface of the medium after polishing is removed by shearing force by a rotating cleaning roll. Therefore, dust generation from the cleaning means and re-adhesion of polishing debris to the cleaning means can be prevented, and the magnetic recording medium can be cleaned satisfactorily. Furthermore, since the cleaning roll can be used for a long period of time, running costs can be lowered and manufacturing costs for magnetic recording media can be reduced compared to cleaning using nonwoven fabric.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明の研磨クリーニング方法を実施する装置の概
略図である。 1・・・磁気記録テープ 10・・・研磨ゾーン11・
・・研磨ロール   20・・・クリーニングゾーン2
1・・・クリーニングロール
The figure is a schematic diagram of an apparatus for carrying out the abrasive cleaning method of the present invention. 1... Magnetic recording tape 10... Polishing zone 11.
... Polishing roll 20 ... Cleaning zone 2
1...Cleaning roll

Claims (1)

【特許請求の範囲】[Claims] 磁気記録媒体の表面を、表面粗さ(Ra)が0.6μm
以上の、回転する研磨ロールまたは所定の方向に搬送さ
れる研磨テープにより研磨した後、表面粗さ(Ra)が
0.5μm以下の回転するクリーニングロールを前記磁
気記録媒体の前記表面に接触させて該表面に付着した研
磨屑をせん断力により除去する磁気記録媒体の研磨クリ
ーニング方法。
The surface of the magnetic recording medium has a surface roughness (Ra) of 0.6 μm.
After polishing with a rotating polishing roll or a polishing tape conveyed in a predetermined direction, a rotating cleaning roll having a surface roughness (Ra) of 0.5 μm or less is brought into contact with the surface of the magnetic recording medium. A method for polishing and cleaning a magnetic recording medium in which polishing debris adhering to the surface is removed by shearing force.
JP8561988A 1988-04-07 1988-04-07 Grinding and cleaning method for magnetic recording medium Pending JPH01258224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8561988A JPH01258224A (en) 1988-04-07 1988-04-07 Grinding and cleaning method for magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8561988A JPH01258224A (en) 1988-04-07 1988-04-07 Grinding and cleaning method for magnetic recording medium

Publications (1)

Publication Number Publication Date
JPH01258224A true JPH01258224A (en) 1989-10-16

Family

ID=13863860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8561988A Pending JPH01258224A (en) 1988-04-07 1988-04-07 Grinding and cleaning method for magnetic recording medium

Country Status (1)

Country Link
JP (1) JPH01258224A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5721010A (en) * 1996-02-15 1998-02-24 Tdk Corporation Method for production of magnetic recording medium
US6796884B1 (en) 2002-02-08 2004-09-28 Imation Corp. Abrasivity control of magnetic media using burnishing techniques
US6811472B2 (en) 2001-09-28 2004-11-02 Imation Corp. Inline lapping of magnetic tape

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5721010A (en) * 1996-02-15 1998-02-24 Tdk Corporation Method for production of magnetic recording medium
US6811472B2 (en) 2001-09-28 2004-11-02 Imation Corp. Inline lapping of magnetic tape
US6796884B1 (en) 2002-02-08 2004-09-28 Imation Corp. Abrasivity control of magnetic media using burnishing techniques

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