JP2021057098A5 - - Google Patents
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- JP2021057098A5 JP2021057098A5 JP2020202320A JP2020202320A JP2021057098A5 JP 2021057098 A5 JP2021057098 A5 JP 2021057098A5 JP 2020202320 A JP2020202320 A JP 2020202320A JP 2020202320 A JP2020202320 A JP 2020202320A JP 2021057098 A5 JP2021057098 A5 JP 2021057098A5
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- Prior art keywords
- recording medium
- magnetic recording
- less
- magnetic
- medium according
- Prior art date
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- 239000006247 magnetic powder Substances 0.000 claims 11
- 239000000758 substrate Substances 0.000 claims 6
- 239000002245 particle Substances 0.000 claims 4
- 238000004804 winding Methods 0.000 claims 3
- 229920000728 polyester Polymers 0.000 claims 2
- 229910000859 α-Fe Inorganic materials 0.000 claims 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052788 barium Inorganic materials 0.000 claims 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 229910052733 gallium Inorganic materials 0.000 claims 1
- 229910000704 hexaferrum Inorganic materials 0.000 claims 1
- 229910052596 spinel Inorganic materials 0.000 claims 1
- 239000011029 spinel Substances 0.000 claims 1
- 229910052712 strontium Inorganic materials 0.000 claims 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims 1
Claims (23)
ポリエステルを主たる成分として含む基体と、
前記基体上に設けられ、磁性粉を複数含み、データ信号の記録が可能な磁性層と
を有し、
前記磁性層の表面の算術平均粗さＲａは、２．４ｎｍ以下であり、
前記磁性層の平均厚みは、９０ｎｍ以下であり、
前記磁性粉の平均アスペクト比は、１．０以上３．０以下であり、
垂直方向における保磁力は、３０００エルステッド以下であり、
垂直方向における保磁力に対する長手方向における保磁力の割合は、０．７５以下であり、
前記データ信号の再生波形における孤立波形の半値幅は、１８０ｎｍ以下である
磁気記録媒体。 A tape-shaped magnetic recording medium,
a substrate containing polyester as a main component;
a magnetic layer provided on the substrate, containing a plurality of magnetic powders, and capable of recording data signals;
The arithmetic mean roughness Ra of the surface of the magnetic layer is 2.4 nm or less ,
The average thickness of the magnetic layer is 90 nm or less,
The average aspect ratio of the magnetic powder is 1.0 or more and 3.0 or less,
coercive force in the vertical direction is 3000 Oersted or less,
the ratio of the coercive force in the longitudinal direction to the coercive force in the vertical direction is 0.75 or less;
The magnetic recording medium, wherein the half width of the isolated waveform in the reproduced waveform of the data signal is 180 nm or less.
請求項１に記載の磁気記録媒体。The magnetic recording medium according to claim 1.
請求項１に記載の磁気記録媒体。The magnetic recording medium according to claim 1.
請求項１に記載の磁気記録媒体。The magnetic recording medium according to claim 1.
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 The half width of the isolated waveform in the reproduced waveform of the data signal is 175 nm or less.
5. The magnetic recording medium according to claim 1 .
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 The half width of the isolated waveform in the reproduced waveform of the data signal is 170 nm or less.
5. The magnetic recording medium according to claim 1 .
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 The half width of the isolated waveform in the reproduced waveform of the data signal is 165 nm or less.
5. The magnetic recording medium according to claim 1 .
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 The average particle size of the plurality of magnetic powders is 8 nm or more and 22 nm or less.
5. The magnetic recording medium according to claim 1 .
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 The average particle volume of the plurality of magnetic powders is 1950 nm 3 or less.
5. The magnetic recording medium according to claim 1 .
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。5. The magnetic recording medium according to claim 1.
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。5. The magnetic recording medium according to claim 1.
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。5. The magnetic recording medium according to claim 1.
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。5. The magnetic recording medium according to claim 1.
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 5. The magnetic recording medium according to claim 1, wherein the substrate has an average thickness of 4.2 [mu]m or less.
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。5. The magnetic recording medium according to claim 1.
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 The magnetic powder is hexagonal ferrite containing at least one of Ba (barium) and Sr (strontium), ε-iron oxide containing at least one of Al (aluminum) and Ga (gallium), or Contains Co (cobalt)-containing spinel ferrite
5. The magnetic recording medium according to claim 1 .
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 The average thickness of the magnetic layer is 80 nm or less
5. The magnetic recording medium according to claim 1 .
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 The average thickness of the magnetic layer is 70 nm or less
5. The magnetic recording medium according to claim 1 .
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。5. The magnetic recording medium according to claim 1.
Ｈｃ２／Ｈｃ１≦０．７ ……（１）
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 When the coercive force in the vertical direction is Hc1 and the coercive force in the longitudinal direction is Hc2, Hc2/Hc1≦0.7 satisfying the following conditional expression (1) (1)
5. The magnetic recording medium according to claim 1 .
請求項１から請求項４のいずれか１項に記載の磁気記録媒体。 The coercive force in the vertical direction is 2900 Oe or more
5. The magnetic recording medium according to claim 1 .
前記送り出し部から送り出された前記磁気記録媒体を巻き取ることのできる巻き取り部と、
前記送り出し部から前記巻き取り部へ向けて走行する前記磁気記録媒体と接触しつつ、前記磁気記録媒体への情報書き込み、および前記磁気記録媒体からの情報読み出しを行うことのできる磁気ヘッドと
を備え、
前記磁気記録媒体は、
ポリエステルを主たる成分として含む基体と、
前記基体上に設けられ、磁性粉を複数含み、データ信号の記録が可能な磁性層と
を有し、
前記磁性層の表面の算術平均粗さＲａは、２．４ｎｍ以下であり、
前記磁性層の平均厚みは、９０ｎｍ以下であり、
前記磁性粉の平均アスペクト比は、１．０以上３．０以下であり、
垂直方向における保磁力は、３０００エルステッド以下であり、
垂直方向における保磁力に対する長手方向における保磁力の割合は、０．７５以下であり、
前記データ信号の再生波形における孤立波形の半値幅は、１８０ｎｍ以下である
磁気記録再生装置。 a sending unit capable of sequentially sending tape-shaped magnetic recording media;
a winding section capable of winding the magnetic recording medium fed from the feeding section;
a magnetic head capable of writing information to the magnetic recording medium and reading information from the magnetic recording medium while being in contact with the magnetic recording medium traveling from the delivery unit toward the winding unit; ,
The magnetic recording medium is
a substrate containing polyester as a main component;
a magnetic layer provided on the substrate, containing a plurality of magnetic powders, and capable of recording data signals;
The arithmetic mean roughness Ra of the surface of the magnetic layer is 2.4 nm or less ,
The average thickness of the magnetic layer is 90 nm or less,
The average aspect ratio of the magnetic powder is 1.0 or more and 3.0 or less,
coercive force in the vertical direction is 3000 Oersted or less,
the ratio of the coercive force in the longitudinal direction to the coercive force in the vertical direction is 0.75 or less;
A magnetic recording/reproducing apparatus, wherein a half width of an isolated waveform in the reproduced waveform of the data signal is 180 nm or less.
前記磁気記録媒体を収容する筐体と
を備えた
磁気記録媒体カートリッジ。 a magnetic recording medium according to any one of claims 1 to 21;
and a housing that accommodates the magnetic recording medium .
Magnetic recording media cartridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020202320A JP2021057098A (en) | 2020-12-04 | 2020-12-04 | Magnetic recording medium, magnetic recording/reproducing device and magnetic recording medium cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020202320A JP2021057098A (en) | 2020-12-04 | 2020-12-04 | Magnetic recording medium, magnetic recording/reproducing device and magnetic recording medium cartridge |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019181511A Division JP6813069B1 (en) | 2019-10-01 | 2019-10-01 | Magnetic recording medium, magnetic recording / playback device and magnetic recording medium cartridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2021057098A JP2021057098A (en) | 2021-04-08 |
| JP2021057098A5 true JP2021057098A5 (en) | 2022-10-13 |
Family
ID=75271028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020202320A Pending JP2021057098A (en) | 2020-12-04 | 2020-12-04 | Magnetic recording medium, magnetic recording/reproducing device and magnetic recording medium cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2021057098A (en) |
-
2020
- 2020-12-04 JP JP2020202320A patent/JP2021057098A/en active Pending
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