JPS58118544U - magnetic recording medium - Google Patents

magnetic recording medium

Info

Publication number
JPS58118544U
JPS58118544U JP1453582U JP1453582U JPS58118544U JP S58118544 U JPS58118544 U JP S58118544U JP 1453582 U JP1453582 U JP 1453582U JP 1453582 U JP1453582 U JP 1453582U JP S58118544 U JPS58118544 U JP S58118544U
Authority
JP
Japan
Prior art keywords
magnetic recording
recording medium
carbon black
upper layer
layer
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
Application number
JP1453582U
Other languages
Japanese (ja)
Other versions
JPS6319941Y2 (en
Inventor
洋 保坂
Original Assignee
東京磁気印刷株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 東京磁気印刷株式会社 filed Critical 東京磁気印刷株式会社
Priority to JP1453582U priority Critical patent/JPS58118544U/en
Publication of JPS58118544U publication Critical patent/JPS58118544U/en
Application granted granted Critical
Publication of JPS6319941Y2 publication Critical patent/JPS6319941Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

添付図面の第１図は従来の磁気記録媒体の構造例を示す
概略断面図、第２図は本考案の一実施例としての磁気記
録媒体の構造例を示す概略断面図、第３図はカーボンブ
ラック含有磁性塗膜厚と反射率との関係を示す図である
。 １・・・・・・基体、２Ａ・・・・・・カーボンブラッ
ク、２Ｂ・・・・・・磁性材、３・・・・・・磁気記録
層、３１・・・・・・上部層、３２・・・・・・下部層
。FIG. 1 of the accompanying drawings is a schematic sectional view showing an example of the structure of a conventional magnetic recording medium, FIG. 2 is a schematic sectional view showing an example of the structure of a magnetic recording medium as an embodiment of the present invention, and FIG. FIG. 3 is a diagram showing the relationship between black-containing magnetic coating thickness and reflectance. DESCRIPTION OF SYMBOLS 1...Base, 2A...Carbon black, 2B...Magnetic material, 3...Magnetic recording layer, 31...Top layer, 32...Lower layer.

Claims (1)

【実用新案登録請求の範囲】 （１）上層部にはカーボンブラックを含むがそれ以下の
部分にはカーボンブラックを含まない磁気記録層を有す
ることを特徴とする磁気記録媒体。 （２１ｍ記上層部は、約、３μ厚さ以下で壱る実用新案
登録請求の範囲第（１）項記載の磁気記録媒体。 （３）前記上層部は、カーボンブラック含有磁性塗料に
て形成され、前記それ以下の部分は、カーボンブラック
未含有磁性塗料にて形成されている実用新案登録請求の
範囲第（１）項又は第（２）項記載の磁気記録媒体。[Claims for Utility Model Registration] (1) A magnetic recording medium characterized by having a magnetic recording layer that contains carbon black in the upper layer but does not contain carbon black in the lower layer. (The magnetic recording medium according to claim 1), wherein the 21 m upper layer has a thickness of approximately 3 μm or less. (3) The upper layer is formed of a magnetic paint containing carbon black. , the magnetic recording medium according to claim 1 or 2, wherein the lower portion is formed of a carbon black-free magnetic paint.
JP1453582U 1982-02-03 1982-02-03 magnetic recording medium Granted JPS58118544U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1453582U JPS58118544U (en) 1982-02-03 1982-02-03 magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1453582U JPS58118544U (en) 1982-02-03 1982-02-03 magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS58118544U true JPS58118544U (en) 1983-08-12
JPS6319941Y2 JPS6319941Y2 (en) 1988-06-03

Family

ID=30026997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1453582U Granted JPS58118544U (en) 1982-02-03 1982-02-03 magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS58118544U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990007775A1 (en) * 1989-01-07 1990-07-12 Konica Corporation Magnetic recording medium having balanced characteristics

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498322A (en) * 1972-04-07 1974-01-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498322A (en) * 1972-04-07 1974-01-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990007775A1 (en) * 1989-01-07 1990-07-12 Konica Corporation Magnetic recording medium having balanced characteristics

Also Published As

Publication number Publication date
JPS6319941Y2 (en) 1988-06-03

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