JP2006120261A5 - - Google Patents

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Publication number
JP2006120261A5
JP2006120261A5 JP2004307954A JP2004307954A JP2006120261A5 JP 2006120261 A5 JP2006120261 A5 JP 2006120261A5 JP 2004307954 A JP2004307954 A JP 2004307954A JP 2004307954 A JP2004307954 A JP 2004307954A JP 2006120261 A5 JP2006120261 A5 JP 2006120261A5
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JP
Japan
Prior art keywords
magnetic
recording medium
thickness
magnetic recording
magnetic layer
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Application number
JP2004307954A
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Japanese (ja)
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JP2006120261A (en
JP4383316B2 (en
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Priority to JP2004307954A priority Critical patent/JP4383316B2/en
Priority claimed from JP2004307954A external-priority patent/JP4383316B2/en
Publication of JP2006120261A publication Critical patent/JP2006120261A/en
Publication of JP2006120261A5 publication Critical patent/JP2006120261A5/ja
Application granted granted Critical
Publication of JP4383316B2 publication Critical patent/JP4383316B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Claims (3)

非磁性支持体上に、少なくとも磁性粉末とカーボンブラックとを含む磁性層を有する磁気記録媒体において、前記磁性層の厚さが１００ｎｍ未満であり、前記磁性粉末の軸比又は板状比が１以上３未満であり、前記カーボンブラックの平均粒子径をＤｃ、前記磁性層の厚さをＤｍとした時に、０．５≦Ｄｃ／Ｄｍ≦１．０の関係を満たすことを特徴とする磁気記録媒体。 In a magnetic recording medium having a magnetic layer containing at least magnetic powder and carbon black on a nonmagnetic support, the thickness of the magnetic layer is less than 100 nm, and the axial ratio or plate ratio of the magnetic powder is 1 or more. 3. A magnetic recording medium satisfying a relationship of 0.5 ≦ Dc / Dm ≦ 1.0 when the average particle diameter of the carbon black is Dc and the thickness of the magnetic layer is Dm . 前記磁性層の厚さが、１０ｎｍ以上１００ｎｍ未満であることを特徴とする、請求項１に記載の磁気記録媒体。The magnetic recording medium according to claim 1, wherein the magnetic layer has a thickness of 10 nm or more and less than 100 nm. カートリッジケース及び前記カートリッジケースに組み込まれた請求項１又は２に記載の磁気記録媒体から成ることを特徴とする、磁気テープカートリッジ。A magnetic tape cartridge comprising a cartridge case and the magnetic recording medium according to claim 1 incorporated in the cartridge case.
JP2004307954A 2004-10-22 2004-10-22 Magnetic recording medium and magnetic tape cartridge Expired - Lifetime JP4383316B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004307954A JP4383316B2 (en) 2004-10-22 2004-10-22 Magnetic recording medium and magnetic tape cartridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004307954A JP4383316B2 (en) 2004-10-22 2004-10-22 Magnetic recording medium and magnetic tape cartridge

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2009186346A Division JP2009259402A (en) 2009-08-11 2009-08-11 Magnetic recording medium and magnetic tape cartridge

Publications (3)

Publication Number Publication Date
JP2006120261A JP2006120261A (en) 2006-05-11
JP2006120261A5 true JP2006120261A5 (en) 2009-07-09
JP4383316B2 JP4383316B2 (en) 2009-12-16

Family

ID=36537993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004307954A Expired - Lifetime JP4383316B2 (en) 2004-10-22 2004-10-22 Magnetic recording medium and magnetic tape cartridge

Country Status (1)

Country Link
JP (1) JP4383316B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5712594B2 (en) * 2010-12-15 2015-05-07 戸田工業株式会社 Hexagonal ferrite particles for magnetic recording media
JP5712595B2 (en) * 2010-12-15 2015-05-07 戸田工業株式会社 Hexagonal ferrite particle powder for magnetic recording medium and magnetic recording medium
JP5998185B2 (en) * 2013-09-30 2016-09-28 富士フイルム株式会社 Ferromagnetic hexagonal ferrite powder and magnetic recording medium

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