JP2021101406A5 - - Google Patents
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- JP2021101406A5 JP2021101406A5 JP2021066846A JP2021066846A JP2021101406A5 JP 2021101406 A5 JP2021101406 A5 JP 2021101406A5 JP 2021066846 A JP2021066846 A JP 2021066846A JP 2021066846 A JP2021066846 A JP 2021066846A JP 2021101406 A5 JP2021101406 A5 JP 2021101406A5
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic tape
- less
- tape according
- measured
- 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
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- 230000005291 magnetic effect Effects 0.000 claims 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 4
- 238000005305 interferometry Methods 0.000 claims 2
- 239000006247 magnetic powder Substances 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 2
- -1 polyethylene terephthalate Polymers 0.000 claims 2
- 230000003746 surface roughness Effects 0.000 claims 2
- 238000005406 washing Methods 0.000 claims 2
- 239000004952 Polyamide Substances 0.000 claims 1
- 239000004962 Polyamide-imide Substances 0.000 claims 1
- 239000004760 aramid Substances 0.000 claims 1
- 229920003235 aromatic polyamide Polymers 0.000 claims 1
- 230000005294 ferromagnetic effect Effects 0.000 claims 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims 1
- 229920002647 polyamide Polymers 0.000 claims 1
- 229920002312 polyamide-imide Polymers 0.000 claims 1
- 239000011112 polyethylene naphthalate Substances 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 claims 1
- 239000005020 polyethylene terephthalate Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
Claims (6)
前記非磁性支持体は、ポリエチレンテレフタレート、ポリエチレンナフタレート、ポリアミド、ポリアミドイミドおよび芳香族ポリアミドからなる群から選択される１種以上を含み、
前記バックコート層の表面において測定される中心線平均表面粗さＲａは７．０ｎｍ以下であり、かつ
前記バックコート層の表面においてエタノール洗浄後に光学干渉法により測定されるスペーシングＳａｆｔｅｒと、前記バックコート層の表面においてエタノール洗浄前に光学干渉法により測定されるスペーシングＳｂｅｆｏｒｅとの差分、Ｓａｆｔｅｒ－Ｓｂｅｆｏｒｅ、は０ｎｍ超１５．０ｎｍ以下である磁気テープ。 A magnetic tape having a magnetic layer containing a ferromagnetic powder on one surface side of a non-magnetic support and a backcoat layer containing a non-magnetic powder on the other surface side.
The non-magnetic support comprises one or more selected from the group consisting of polyethylene terephthalate, polyethylene naphthalate, polyamide, polyamide-imide and aromatic polyamide.
The center line average surface roughness Ra measured on the surface of the backcoat layer is 7.0 nm or less, and the spacing Safter measured by an optical interferometry after washing with ethanol on the surface of the backcoat layer, and the above. A magnetic tape having a difference from the spacing S before measured by an optical interferometry on the surface of the backcoat layer before washing with ethanol, the After -S before , which is more than 0 nm and 15.0 nm or less.
磁気ヘッドと、
を含む磁気記録再生装置。 The magnetic tape according to any one of claims 1 to 5 and the magnetic tape.
With a magnetic head
Magnetic recording / playback device including.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023028852A JP7422912B2 (en) | 2018-03-29 | 2023-02-27 | Magnetic tape and magnetic recording/playback equipment |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018064073 | 2018-03-29 | ||
| JP2018064073 | 2018-03-29 | ||
| JP2020208775A JP6868744B2 (en) | 2018-03-29 | 2020-12-16 | Magnetic tape and magnetic recording / playback device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020208775A Division JP6868744B2 (en) | 2018-03-29 | 2020-12-16 | Magnetic tape and magnetic recording / playback device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2023028852A Division JP7422912B2 (en) | 2018-03-29 | 2023-02-27 | Magnetic tape and magnetic recording/playback equipment |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2021101406A JP2021101406A (en) | 2021-07-08 |
| JP2021101406A5 true JP2021101406A5 (en) | 2022-03-22 |
| JP7236493B2 JP7236493B2 (en) | 2023-03-09 |
Family
ID=68167130
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019054757A Active JP6812485B2 (en) | 2018-03-29 | 2019-03-22 | Magnetic tape and magnetic recording / playback device |
| JP2020208775A Active JP6868744B2 (en) | 2018-03-29 | 2020-12-16 | Magnetic tape and magnetic recording / playback device |
| JP2021066846A Active JP7236493B2 (en) | 2018-03-29 | 2021-04-12 | Magnetic tapes and magnetic recording/playback devices |
| JP2023028852A Active JP7422912B2 (en) | 2018-03-29 | 2023-02-27 | Magnetic tape and magnetic recording/playback equipment |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019054757A Active JP6812485B2 (en) | 2018-03-29 | 2019-03-22 | Magnetic tape and magnetic recording / playback device |
| JP2020208775A Active JP6868744B2 (en) | 2018-03-29 | 2020-12-16 | Magnetic tape and magnetic recording / playback device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2023028852A Active JP7422912B2 (en) | 2018-03-29 | 2023-02-27 | Magnetic tape and magnetic recording/playback equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (4) | JP6812485B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6797232B2 (en) * | 2018-03-29 | 2020-12-09 | 富士フイルム株式会社 | Magnetic tape and magnetic recording / playback device |
| JP6797231B2 (en) * | 2018-03-29 | 2020-12-09 | 富士フイルム株式会社 | Magnetic recording medium and magnetic recording / playback device |
| JP6788069B2 (en) * | 2019-05-15 | 2020-11-18 | 富士フイルム株式会社 | Magnetic recording medium and magnetic recording / playback device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030046755A (en) * | 2001-12-06 | 2003-06-18 | 주식회사 코오롱 | Magnetic recording medium |
| JP6465823B2 (en) * | 2016-02-03 | 2019-02-06 | 富士フイルム株式会社 | Magnetic tape and manufacturing method thereof |
| JP6797232B2 (en) * | 2018-03-29 | 2020-12-09 | 富士フイルム株式会社 | Magnetic tape and magnetic recording / playback device |
-
2019
- 2019-03-22 JP JP2019054757A patent/JP6812485B2/en active Active
-
2020
- 2020-12-16 JP JP2020208775A patent/JP6868744B2/en active Active
-
2021
- 2021-04-12 JP JP2021066846A patent/JP7236493B2/en active Active
-
2023
- 2023-02-27 JP JP2023028852A patent/JP7422912B2/en active Active
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