JPS5930241A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS5930241A JPS5930241A JP57137888A JP13788882A JPS5930241A JP S5930241 A JPS5930241 A JP S5930241A JP 57137888 A JP57137888 A JP 57137888A JP 13788882 A JP13788882 A JP 13788882A JP S5930241 A JPS5930241 A JP S5930241A
- Authority
- JP
- Japan
- Prior art keywords
- lubricant
- tape
- magnetic
- video
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
- G11B5/7356—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Lubricants (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は磁気記録媒体に係り、磁性層と反対側のベース
面に、−酸化チタンと滑剤とを含む樹脂層を設けておく
ことにより、ビデオＳ／Ｎ、ビデオ感度等の電磁変換特
性、耐摩耗性、走行性等の特性が優れたものとなる磁気
記録媒体を提供することを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording medium, in which video S/N and video sensitivity can be improved by providing a resin layer containing -titanium oxide and a lubricant on the base surface opposite to the magnetic layer. It is an object of the present invention to provide a magnetic recording medium that has excellent properties such as electromagnetic conversion properties, wear resistance, and runnability.
近年、高密度記録用の例えばビデオテープレコーダ用磁
気テープが普及するにつれて、このような磁気テープは
、ビデオＳ ／Ｎ、ビデオ感度、ビデオテープレコーダ
のガイドポール及びガイドポスト等の摩耗、シンチング
現象、テープ走行中のノイズといった総合的特性のバラ
ンス向上が問題となって−きている。しかし、従来にお
いては、ビデオＳ／Ｎ、ビデオ感度の特性がある程度優
れてはいても、テープ巻き弛みの発生、テープの傷つき
、記録再生装置側のガイドボストの摩耗が大きいといっ
たように、ある特性には優れたものであっても、他の特
性が劣っているといったように総合的なバランスのとれ
た特性のものではないといつだ欠点がある。In recent years, as magnetic tapes for high-density recording, for example, for video tape recorders, have become widespread, such magnetic tapes have problems such as video S/N, video sensitivity, abrasion of guide poles and guide posts of video tape recorders, cinching phenomenon, etc. Improving the balance of overall characteristics such as noise during tape running has become a problem. However, in the past, even if the characteristics of video S/N and video sensitivity were excellent to some extent, certain characteristics such as tape winding loosening, tape damage, and abrasion of the guide post on the recording/playback device side were significant. Even if a product is excellent, it will always have drawbacks if it does not have well-balanced characteristics, such as inferiority in other characteristics.
本発明は上記欠点を除去したものであり、すなわち磁気
記録媒体のバック面に、平均粒径００１〜５μｍ１望ま
しくは００１５〜０２μｍの一酸化チタンと滑剤とをバ
インダー樹脂によって塗着しておくことにより、上記の
総合的特性が向上し、バランスのとれた優れた磁気記録
媒体となることを見い出したのである。The present invention eliminates the above drawbacks by applying titanium monoxide and a lubricant having an average particle size of 001 to 5 μm, preferably 0015 to 02 μm, on the back surface of a magnetic recording medium using a binder resin. It was discovered that the above-mentioned comprehensive properties were improved, resulting in an excellent and well-balanced magnetic recording medium.
又、磁気記録媒体のバック面に設けるバインダー樹脂層
中に添加する一酸化チタンの添加量はバインダー樹脂層
中のバインダー樹脂分に対して約５０〜２００重量％、
滑剤の添加量はバインダー樹脂層中のバインダー樹脂分
に対して約５〜３０重量％のものであることが好ましい
ものとなることも見い出した。Further, the amount of titanium monoxide added to the binder resin layer provided on the back surface of the magnetic recording medium is about 50 to 200% by weight based on the binder resin content in the binder resin layer.
It has also been found that the amount of lubricant added is preferably about 5 to 30% by weight based on the binder resin content in the binder resin layer.
以下、本発明に係る磁気記録媒体の幾つかの実施例につ
いて説明する。Some embodiments of the magnetic recording medium according to the present invention will be described below.
実施例１〜４
Ｃｏ含含有−Ｆ ｅ ２０３等の磁性粉、塩化ビニル−
酢酸ビニル共重合体等のバインダー、メチルエチルケト
ン等の溶剤等よりなる磁性塗料を、例えばポリエステル
フィルム等のペースの一面に所定厚塗布して磁性層を構
成すると共に、ベースの他面に、平均粒径０．０５〜Ｏ
０２μｍの範囲内の一酸化チタン１００部、炭化水素系
滑剤（流動パラフィン、天然パラフィン、マイクロワッ
クス、ポリエチレンワックス） ２０部、ポリウレタン
エラストマー８０部、塩化ビニル−酢酸ビニル−ビニ゛
ルアルコール共重合体３０部、メチルエチルケトン６０
０部の混合分散溶液を、０２〜２μｍ例えば約１μｍ厚
塗布してバックコート層を構成し、ビデオテープレコー
ダ用の磁気テープを得る。Examples 1 to 4 Co-containing magnetic powder such as Fe 203, vinyl chloride
A magnetic coating consisting of a binder such as a vinyl acetate copolymer, a solvent such as methyl ethyl ketone, etc. is applied to one side of a paste such as a polyester film to a predetermined thickness to form a magnetic layer, and a magnetic coating with an average particle size of 0.05~O
100 parts of titanium monoxide within the range of 0.02 μm, 20 parts of hydrocarbon lubricant (liquid paraffin, natural paraffin, microwax, polyethylene wax), 80 parts of polyurethane elastomer, 30 parts of vinyl chloride-vinyl acetate-vinyl alcohol copolymer. 60 parts, methyl ethyl ketone
A back coat layer is formed by applying 0 parts of the mixed dispersion solution to a thickness of 0.2 to 2 μm, for example, about 1 μm, to obtain a magnetic tape for a video tape recorder.
、実施例５〜８
実施例１のバックコート層の流動パラフィンをｊ脂肪酸
系滑剤（ステアリン酸、ラウリン酸、パルミチン酸、オ
レイン酸）に代えて、実施例１と同様にして磁気テープ
を得る。, Examples 5 to 8 Magnetic tapes were obtained in the same manner as in Example 1 except that the liquid paraffin in the back coat layer of Example 1 was replaced with a fatty acid-based lubricant (stearic acid, lauric acid, palmitic acid, oleic acid).
実施例９〜１２
実施例１のバックコート層の流動パラフィンを脂肪酸ア
ミド系滑剤（ステアリン酸アミド、パルミチン酸アミド
、メチレンビスステアロアミド、エチレンビスステアロ
アミド）に代えて、実施例１と同様にして磁気テープを
得る。Examples 9 to 12 Same as Example 1 except that the liquid paraffin in the back coat layer of Example 1 was replaced with a fatty acid amide lubricant (stearamide, palmitic acid amide, methylene bis stearamide, ethylene bis stearamide). and obtain magnetic tape.
実施例１３〜１７
実施例１のバックコート層の流動パラフィンをエステル
系滑剤（ミリスチン酸イングロビル、ステアリン酸イソ
アミル、ステアリン酸ブチル、ラウリン酸ヘキシル、オ
レイン酸オレイル）に代えて、実施例１と同様にして磁
気テープを得る。Examples 13 to 17 The same procedure as in Example 1 was carried out except that the liquid paraffin in the back coat layer of Example 1 was replaced with an ester lubricant (inglovil myristate, isoamyl stearate, butyl stearate, hexyl laurate, oleyl oleate). to obtain magnetic tape.
実施例１８〜２４
実施例１のバックコート層の流動パラフィンをシリコー
ン系滑剤（下記の一般式（１）〜（■）で表わされるも
の）に代えて、実施例１七同様にして磁気テープを得る
。Examples 18 to 24 Magnetic tapes were prepared in the same manner as in Example 17, except that the liquid paraffin in the back coat layer of Example 1 was replaced with a silicone lubricant (represented by the following general formulas (1) to (■)). obtain.
ＣＨ３ＣＨ３
１
（但し、 ｌ（、、及びＲ２は、水素原子又は炭素数１
〜１８の１価の炭化水素基、 ］、ｊ、及びＲ４は、炭
素数２〜１７の２価の炭化水素基）
ＣＨ３
Ｒ−Ｑ ｆ Ｓ ｉ −０＋）もｌ（■）晶３ 。CH3CH3 1 (However, l(, and R2 are hydrogen atoms or carbon atoms with 1
-18 monovalent hydrocarbon group, ], j, and R4 are divalent hydrocarbon groups having 2 to 17 carbon atoms)CH3R-QfSi-0+) is also l(■) crystal 3.
（但し、■も及びＲ’は炭素数７〜２６の炭化水素基、
ｎは１〜２０の整数）
（但し、Ｒ及び■七′は炭素数８〜１８の炭化水素基、
■（、′は水素原子又はメチル基、＋１．ｍ及び〕は、
１≦ｍ＜１５． ２≦ｎ十ノ≦１６の条件を満たす自然
数）
ＣＨ３Ｃル
１
（Ｒ＋ ）３−ｍ
■
Ｘ（−ＣＦ２ＣＦ２”）−、ＣＨ，ＣＨ２−８ｉモＯＣ
ＯＲ２）ｍ （Ｖ）（但し、 ｌ（、、は炭素
数１〜６の１価炭化水素基、ルは炭素数７〜２１の１価
炭化水素基、Ｘは水素又はフッ素原子、ｎは１〜４の整
数、ｍは１〜３の整数）
（但し、Ｒ１は炭素数７〜２１の飽和又は不飽和の１価
炭化水素基、Ｒ２はメチル基又はフェニル基、Ｒ１は−
Ｑ ＣＯＲ，で表わされる基、ＹはｆＣＦ２−）ｋＷ（
但し、ｋは１〜８の整数、Ｗは水素又はフッ素原子）、
！、１η及びｎは、０≦ノ〈２００、■≦ｍ＜１００゜
１≦ｎ ＜ １００、ノ十ｍ ＋ ｎ≦３００の条件を
満たす整数）（但し、Ｒは炭素数７〜２１の飽和又は不
飽和の１価炭化水素基、Ｒ，、Ｒ２及びＲ３はＩ（、Ｃ
００基、Ｒうけ炭素数６〜２０の１価の飽和炭化水素基
１ ｋｌ）、ｍ及び１１は、Ｉｌｋ、 ｌ≦ｆｆｌ＜２
００．１≦ｍ＜２００゜０≦ｎ（３００，１十ｍ＋ｎ≦
５００の条件を満たす整数）比較例１
実施例】のバックコート層に流動パラフィンを添加せず
に、実施例１と同様にして磁気テープを得る。(However, ■ and R' are hydrocarbon groups having 7 to 26 carbon atoms,
n is an integer of 1 to 20) (However, R and ■7' are hydrocarbon groups having 8 to 18 carbon atoms,
■(,' is a hydrogen atom or a methyl group, +1.m and] are
1≦m<15. (Natural number satisfying the condition 2≦n10≦16) CH3Cl1 (R+)3-m ■ X(-CF2CF2”)-, CH, CH2-8i MoOC
OR2) m (V) (where l(,, is a monovalent hydrocarbon group having 1 to 6 carbon atoms, ru is a monovalent hydrocarbon group having 7 to 21 carbon atoms, X is hydrogen or a fluorine atom, n is 1 an integer of ~4, m is an integer of 1 to 3) (However, R1 is a saturated or unsaturated monovalent hydrocarbon group having 7 to 21 carbon atoms, R2 is a methyl group or phenyl group, R1 is -
Q COR, Y is fCF2−)kW(
However, k is an integer from 1 to 8, W is hydrogen or fluorine atom),
! , 1η and n are integers satisfying the following conditions: 0≦〈200, ■≦m<100゜1≦n<100, ノ〉m+n≦300) (However, R is a saturated or Unsaturated monovalent hydrocarbon groups, R, , R2 and R3 are I(, C
00 group, R is a monovalent saturated hydrocarbon group having 6 to 20 carbon atoms 1kl), m and 11 are Ilk, l≦ffl<2
00.1≦m<200°0≦n (300,10m+n≦
(an integer satisfying the condition of 500) Comparative Example 1 A magnetic tape is obtained in the same manner as in Example 1 without adding liquid paraffin to the back coat layer of Example.
比較例２〜５
実施例１〜４のバックコート層の一酸化チタンの代りに
ＣａＣＯ３を用いて、実施例１と同様にして磁気テープ
を得る。Comparative Examples 2 to 5 Magnetic tapes were obtained in the same manner as in Example 1 except that CaCO3 was used instead of titanium monoxide in the back coat layer of Examples 1 to 4.
比較例６
実施例１８のバックコート層の一酸化チタンの代、！１
ｌｌＫＣａＣＯ３を用いて、実施例１８と同様にして磁
気テープを得る。Comparative Example 6 The amount of titanium monoxide used in the back coat layer of Example 18! 1
A magnetic tape is obtained in the same manner as in Example 18 using llKCaCO3.
上記のようにして得られた磁気テープについて、ビデオ
Ｓ／Ｎ、ビデオ感度、走行中のノイズ、テープ巻き弛み
発生率、擦傷度、記録再生機のガイドポストの摩耗度を
測定すると表に示す通りである。Regarding the magnetic tape obtained as described above, the video S/N, video sensitivity, noise during running, tape winding slack occurrence rate, degree of abrasion, and degree of wear of the guide post of the recording/reproducing machine were measured as shown in the table. It is.
表 差値で表示。table Displayed as difference value.
・テープ巻き弛み発生率は、（巻き弛みの発生した磁気
テープの巻数）／（テストした磁気テープの巻数） Ｘ
１００で表示。・Tape winding slack occurrence rate is (number of turns of magnetic tape where winding slack has occurred)/(number of turns of magnetic tape tested)
Displayed in 100.
・擦傷度は、ビデオテープレコーダに装着して擦傷によ
る画像の乱れの数させた際の摩擦係数の増加で表示。・The degree of scratches is expressed by the increase in the friction coefficient when attached to a video tape recorder and the number of image disturbances due to scratches.
上記の結果かられかるように、支持体の磁性層と反対側
の面に、 ＴｉＯと滑剤とを含むバインダー樹脂層を設
けた磁気テープは、ビデオＳ／Ｎ、 ビデオ感度が高
く、シかも走行中のノイズは低く、電磁変換特性は良好
なものであり、又、磁気テープには傷つきが起きに＜＜
、さらにはテープの巻き弛み等が起きに＜＜、シかも繰
り返し走行させても摩擦係数はそれ程大きくならず、走
行性の良好なものであることがわかる。そして、磁気テ
ープの傷つきが起きにくいので、出力変動が起きること
なく、又、ドロップアウト等も起きにくいものである。As can be seen from the above results, a magnetic tape in which a binder resin layer containing TiO and a lubricant is provided on the opposite side of the support from the magnetic layer has high video S/N, high video sensitivity, and low running speed. The internal noise is low, the electromagnetic conversion characteristics are good, and the magnetic tape is resistant to scratches.
Furthermore, the friction coefficient did not increase so much even when the tape was repeatedly run due to loosening of the tape, etc., indicating that the tape had good running properties. Furthermore, since the magnetic tape is less likely to be damaged, output fluctuations and dropouts are less likely to occur.
又、テープ高速送り時のテープ巻き端面が良く揃い、テ
ープ変形等による信号出力の変動が少ないものともなる
。In addition, the tape winding end surfaces are well aligned when the tape is fed at high speed, and there is little variation in signal output due to tape deformation or the like.
又、本実施例の磁気テープは、テープ終端をフリーな状
態としておき、急速停止をさせた場合でも巻き弛みが生
じない等、そのテープ走行性及びテープ巻姿は極めて良
好なものである。Further, the magnetic tape of this embodiment has extremely good tape running properties and tape winding appearance, such as leaving the end of the tape in a free state and causing no slack in the winding even when the tape is rapidly stopped.
又、上記の磁気テープについて、磁気テープ裏面の表面
電気抵抗を測定すると、本実施例のものはいずれも１０
８Ω以下と小さいのに対し、比較例２〜６のものは１０
８〜１０９Ωであり、その為帯電防止効果が充分でなく
、ゴミやホコリの付着シヤスイものでもあった。In addition, when measuring the surface electrical resistance of the back surface of the magnetic tape for the above magnetic tapes, all of the magnetic tapes in this example had a resistance of 10
Comparative Examples 2 to 6 had a small resistance of 8 Ω or less, whereas those of Comparative Examples 2 to 6 had a resistance of 10 Ω.
The resistance was 8 to 10 9 Ω, and therefore the antistatic effect was not sufficient, and dirt and dust were easily attached.
尚、上記実施例５以下に対する直接の比較例は示してい
ないが ＴｐｉＱと滑剤とを共にはバラフコ−１・層に
含んでいない実施例５以下のものに対する比較例は比較
例２〜５と同様なものであり、ＴｉＯと滑剤とを共にバ
ックコート層に含んでいる磁気記録媒体は、 ’Ｉ’ｉ
０と滑剤との相乗効果によって電磁変換特性、走行性、
巻き姿等多くの特性について総合的特性が良好でバラン
スのとれたものである。Although no direct comparative example is shown for Examples 5 and below, the comparison examples for Examples 5 and below, in which both TpiQ and lubricant are not included in the Barafco-1 layer, are the same as Comparative Examples 2 to 5. A magnetic recording medium containing both TiO and a lubricant in the back coat layer is 'I'i
The synergistic effect of 0 and the lubricant improves electromagnetic characteristics, running performance,
It has good overall characteristics and is well-balanced in terms of many characteristics such as the winding shape.
上述の如く、本発明に係る磁気記録媒体は、支持体の一
面側に磁性層を、他面側に一酸化チタンと滑剤とを含む
樹脂層を設けたので、ビデオ８７Ｎ。As described above, the magnetic recording medium according to the present invention has a magnetic layer on one side of the support and a resin layer containing titanium monoxide and a lubricant on the other side.
ビデオ感度はＫく、しかも走行中のノイズは低く、電磁
変換特性は向上したものとなり、又、傷つきは起きに＜
＜、ドロップアウトは発生しにくく、耐久性及び走行性
に優れておシ、又、テープの巻姿は良好々ものであり、
さらには帯電防止も効果的に行なわれ、ゴミやホコリが
付着しにくり、磁気記録媒体の総合的な特性が向上した
ものであるといった特長を有する。The video sensitivity is high, the noise while driving is low, the electromagnetic conversion characteristics are improved, and scratches are less likely to occur.
＜Dropouts are unlikely to occur, the durability and runnability are excellent, and the tape winding is in good condition.
Furthermore, it has the advantage of effectively preventing static electricity, making it difficult for dirt and dust to adhere to it, and improving the overall characteristics of the magnetic recording medium.
特許出願人 日本ビクター株式会社Patent applicant: Victor Japan Co., Ltd.
Claims (1)
剤とを含む樹脂層を設けたことを特徴とする磁気記録媒
体。A magnetic recording medium characterized in that a magnetic layer is provided on one side of a support, and a resin layer containing titanium monoxide and a lubricant is provided on the other side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57137888A JPS5930241A (en) | 1982-08-10 | 1982-08-10 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57137888A JPS5930241A (en) | 1982-08-10 | 1982-08-10 | Magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5930241A true JPS5930241A (en) | 1984-02-17 |
| JPS6222173B2 JPS6222173B2 (en) | 1987-05-16 |
Family
ID=15209018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57137888A Granted JPS5930241A (en) | 1982-08-10 | 1982-08-10 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5930241A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10881789B2 (en) | 2013-10-24 | 2021-01-05 | Trustees Of Boston University | Infusion system for preventing mischanneling of multiple medicaments |
| US11278661B2 (en) | 2020-03-10 | 2022-03-22 | Beta Bionics, Inc. | Infusion system and components thereof |
| US11331463B2 (en) | 2015-07-08 | 2022-05-17 | Trustees Of Boston University | Infusion system and components thereof |
| US11571507B2 (en) | 2019-07-16 | 2023-02-07 | Beta Bionics, Inc. | Ambulatory device and components thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0396255U (en) * | 1990-01-22 | 1991-10-01 | ||
| JP6569758B1 (en) | 2018-03-14 | 2019-09-04 | 栗田工業株式会社 | Pitch failure prevention method |
-
1982
- 1982-08-10 JP JP57137888A patent/JPS5930241A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10881789B2 (en) | 2013-10-24 | 2021-01-05 | Trustees Of Boston University | Infusion system for preventing mischanneling of multiple medicaments |
| US11357911B2 (en) | 2013-10-24 | 2022-06-14 | Trustees Of Boston University | Infusion pump and system for preventing mischanneling of multiple medicaments |
| US11331463B2 (en) | 2015-07-08 | 2022-05-17 | Trustees Of Boston University | Infusion system and components thereof |
| US11571507B2 (en) | 2019-07-16 | 2023-02-07 | Beta Bionics, Inc. | Ambulatory device and components thereof |
| US11633535B2 (en) | 2019-07-16 | 2023-04-25 | Beta Bionics, Inc. | Ambulatory device and components thereof |
| US11278661B2 (en) | 2020-03-10 | 2022-03-22 | Beta Bionics, Inc. | Infusion system and components thereof |
| USD1022185S1 (en) | 2020-03-10 | 2024-04-09 | Beta Bionics, Inc. | Medicament infusion pump device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6222173B2 (en) | 1987-05-16 |
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