JPS6214888B2 - - Google Patents
Info
- Publication number
- JPS6214888B2 JPS6214888B2 JP54158916A JP15891679A JPS6214888B2 JP S6214888 B2 JPS6214888 B2 JP S6214888B2 JP 54158916 A JP54158916 A JP 54158916A JP 15891679 A JP15891679 A JP 15891679A JP S6214888 B2 JPS6214888 B2 JP S6214888B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic field
- coating film
- substrate
- manufacturing
- 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.)
- Expired
Links
- 239000000758 substrate Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- 230000003746 surface roughness Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
Description
【発明の詳細な説明】
本発明は磁気デイスク、磁気テープ、磁気記録
シート等の磁性記録媒体の製造方法に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing magnetic recording media such as magnetic disks, magnetic tapes, and magnetic recording sheets.
従来、磁気デイスク、磁気テープ等の電子計算
機用記録用品を製造する際に、磁性塗料をアルミ
基板又は有機質フイルム等に均一に塗布するた
め、垂直磁界及び円周方向配向磁界を印加すれ
ば、形成された磁性塗膜の表面あらさを微少に
し、且つピンホールを減少せしめ、磁性記録媒体
表面の平滑度向上に伴う装置の磨耗損失減少と共
にＳ／Ｎ比を改善することができることが知られ
ていた。 Conventionally, when manufacturing computer recording supplies such as magnetic disks and magnetic tapes, in order to uniformly apply magnetic paint to aluminum substrates or organic films, it is possible to apply a perpendicular magnetic field and a circumferentially oriented magnetic field. It was known that it is possible to minimize the surface roughness of the magnetic coating film and reduce the number of pinholes, thereby reducing the wear loss of the device and improving the S/N ratio due to the improvement in the smoothness of the surface of the magnetic recording medium. .
本発明は上記磁界印加の作用を増進させること
を目的とし、この目的は磁性塗料を基板上に塗布
する磁性記録媒体の製造工程において、基板面に
垂直な磁場を印加する磁極を振動させることによ
り達成される。 The purpose of the present invention is to enhance the effect of applying a magnetic field, and this purpose is achieved by vibrating a magnetic pole that applies a magnetic field perpendicular to the substrate surface in the manufacturing process of a magnetic recording medium in which magnetic paint is applied onto a substrate. achieved.
以下図面を用いて本発明の一実施例につき説明
する。 An embodiment of the present invention will be described below with reference to the drawings.
図は本発明の一実施例の説明図である。 The figure is an explanatory diagram of an embodiment of the present invention.
基板１に磁性塗膜２がスピンコート法その他の
塗布方法により形成される。 A magnetic coating film 2 is formed on a substrate 1 by a spin coating method or other coating method.
基板１は矢印Ｒ方向に回転又は移動する。 The substrate 1 rotates or moves in the direction of arrow R.
電磁石又は永久磁石を用いた垂直磁場発生磁極
３より磁性塗膜２に垂直磁場を印加する。 A vertical magnetic field is applied to the magnetic coating film 2 from a vertical magnetic field generating magnetic pole 3 using an electromagnet or a permanent magnet.
その際、振動子４を用いて垂直磁場発生磁極３
を振動せしめ、この際生じる磁気勾配に比例する
力によつて塗膜２の磁性粉の分散を促進させる。 At that time, using the vibrator 4, the vertical magnetic field generating magnetic pole 3
is vibrated, and the force proportional to the magnetic gradient generated at this time promotes the dispersion of the magnetic powder in the coating film 2.
この工程においては同時に通常の円周方向配向
用磁極５も設けられて配向用磁場を形成する。 In this step, a normal circumferential orientation magnetic pole 5 is also provided at the same time to form an orientation magnetic field.
本実施例においては、通常の配向用磁場印加時
間内にこの垂直磁場を印加し、且つ1kHz乃至50k
Hzの振動を振動子４により垂直磁場発生磁極３に
与え、塗膜の表面あらさで測定して、振動処理を
行なわぬものが0.030μｍであつたのに対して、
振動処理を行なつたものが0.020μｍに改良され
た。 In this example, this perpendicular magnetic field is applied within the normal orientation magnetic field application time, and the magnetic field is applied at 1 kHz to 50 kHz.
Hz vibration was applied to the vertical magnetic field generating magnetic pole 3 by the vibrator 4, and the surface roughness of the coating film was measured, and the roughness was 0.030 μm for the one without vibration treatment.
The one that was subjected to vibration treatment was improved to 0.020 μm.
以上述べた如く、本発明によれば、単に振動子
を磁極に付加するという簡単な加工と、振動発生
回路により磁気デイスクの表面あらさを改良し、
且つ塗膜形成の際、塗液の粘性低下して流動性が
高まるために、塗布の均一性が向上し、塗膜の膜
厚も10％薄く出来、欠陥のない緻密な磁性膜が形
成出来るので、デイスクノイズも本実施例におい
て10μVrmsから８μVrmsに減少し、磁気デイス
クの性能向上に多大の効果を得る。 As described above, according to the present invention, the surface roughness of a magnetic disk is improved by a simple process of simply adding a vibrator to a magnetic pole and a vibration generating circuit.
In addition, when forming a coating film, the viscosity of the coating liquid decreases and its fluidity increases, which improves the uniformity of coating and allows the coating film to be 10% thinner, forming a dense magnetic film without defects. Therefore, the disk noise is also reduced from 10 .mu.Vrms to 8 .mu.Vrms in this embodiment, which has a great effect on improving the performance of the magnetic disk.
図は本発明の一実施例の説明図である。
図中、１は基板であり、２は磁性塗膜、３は垂
直磁場発生磁極、４は振動子、５は配向用磁極で
ある。
The figure is an explanatory diagram of an embodiment of the present invention. In the figure, 1 is a substrate, 2 is a magnetic coating film, 3 is a vertical magnetic field generating magnetic pole, 4 is a vibrator, and 5 is an orientation magnetic pole.
Claims (1)
場と水平磁場を併用して水平配向の磁気記録媒体
を製造するに際して、前記基板面に垂直な前記磁
場を印加する磁極を振動させることを特徴とする
磁気記録媒体の製造方法。1. When manufacturing a horizontally oriented magnetic recording medium by applying a magnetic paint onto a substrate and applying both a vertical magnetic field and a horizontal magnetic field to the substrate surface, it is possible to vibrate the magnetic pole that applies the magnetic field perpendicular to the substrate surface. A method for manufacturing a magnetic recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15891679A JPS5680833A (en) | 1979-12-07 | 1979-12-07 | Production of magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15891679A JPS5680833A (en) | 1979-12-07 | 1979-12-07 | Production of magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5680833A JPS5680833A (en) | 1981-07-02 |
| JPS6214888B2 true JPS6214888B2 (en) | 1987-04-04 |
Family
ID=15682138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15891679A Granted JPS5680833A (en) | 1979-12-07 | 1979-12-07 | Production of magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5680833A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02108238A (en) * | 1988-10-18 | 1990-04-20 | Sony Corp | Production of magnetic recording medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429611A (en) * | 1977-08-09 | 1979-03-05 | Fujitsu Ltd | Production of vertical orientation coating film magnetic disc |
-
1979
- 1979-12-07 JP JP15891679A patent/JPS5680833A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429611A (en) * | 1977-08-09 | 1979-03-05 | Fujitsu Ltd | Production of vertical orientation coating film magnetic disc |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5680833A (en) | 1981-07-02 |
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