JPS6486504A - Powder for magnetic shielding and magnetic shielding material - Google Patents

Powder for magnetic shielding and magnetic shielding material

Info

Publication number
JPS6486504A
JPS6486504A JP62242508A JP24250887A JPS6486504A JP S6486504 A JPS6486504 A JP S6486504A JP 62242508 A JP62242508 A JP 62242508A JP 24250887 A JP24250887 A JP 24250887A JP S6486504 A JPS6486504 A JP S6486504A
Authority
JP
Japan
Prior art keywords
magnetic
mean
magnetic shielding
extends over
oxide
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
JP62242508A
Other languages
Japanese (ja)
Other versions
JP2687124B2 (en
Inventor
Yoshikazu Narumiya
Hiroshi Kurihara
Hiroshi Hosaka
Shohei Mimura
Atsushi Makimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Toppan Infomedia Co Ltd
Original Assignee
Tokyo Magnetic Printing Co Ltd
TDK Corp
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 Tokyo Magnetic Printing Co Ltd, TDK Corp filed Critical Tokyo Magnetic Printing Co Ltd
Priority to JP62242508A priority Critical patent/JP2687124B2/en
Publication of JPS6486504A publication Critical patent/JPS6486504A/en
Application granted granted Critical
Publication of JP2687124B2 publication Critical patent/JP2687124B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

PURPOSE:To manufacture a magnetic shielding material having high directional proper ties by dispersing magnetic powder composed of tabular or flat-shaped magnetic particles manufactured without crushing a specific oxide magnetic material into an organic binder and changing the organic binder into a sheet. CONSTITUTION:A magnetic shielding material consists of the tabular particles of a hexagonal system oxide magnetic material having axes of easy magnetization in the directions except a C axis, a mean diameter thereof extends over 1-100mum, mean thickness thereof extends over 0.01-19mum and the ratio of mean external shape/mean the thickness thereof extends over 5 or more. An A-Me-Co-Fe-D group magnetic oxide (where A represents at least one kind of an alkali earth metal such as Ba, Sr, etc., Me at least one kind of bivalent Fe, Ni, zn, Mn, Cu, Cd, Mg and (Fe<3>++Li<1+>)/2 and D at least one kind of trivalent Al, Mn, Cr, Ga, and (Co<2+>+Ti<4+>)/2) is preferable as the composition of the hexagonal system oxide magnetic material. Magnetic particles, a synthetic resin and a proper solvent and additives such as a quantity of a dispersant are mixed, thus acquiring paints. When a magnetic field is applied in the direction parallel with a coated surface on application, the effect of magnetic shielding in the direction is improved.
JP62242508A 1987-09-29 1987-09-29 Powder for magnetic shield and magnetic shield material Expired - Lifetime JP2687124B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62242508A JP2687124B2 (en) 1987-09-29 1987-09-29 Powder for magnetic shield and magnetic shield material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62242508A JP2687124B2 (en) 1987-09-29 1987-09-29 Powder for magnetic shield and magnetic shield material

Publications (2)

Publication Number Publication Date
JPS6486504A true JPS6486504A (en) 1989-03-31
JP2687124B2 JP2687124B2 (en) 1997-12-08

Family

ID=17090147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62242508A Expired - Lifetime JP2687124B2 (en) 1987-09-29 1987-09-29 Powder for magnetic shield and magnetic shield material

Country Status (1)

Country Link
JP (1) JP2687124B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998008234A1 (en) * 1996-08-23 1998-02-26 Tokin Corporation Emi preventive part and active device with the same
WO2004097863A1 (en) * 2003-05-01 2004-11-11 Juridical Foundation Osaka Industrial Promotion Organization Magnetic material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5032207A (en) * 1973-07-20 1975-03-28
JPS59119900A (en) * 1982-12-27 1984-07-11 信越ポリマ−株式会社 Magnetic shielding material for magnetic recording medium and magnetic shield mold

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5032207A (en) * 1973-07-20 1975-03-28
JPS59119900A (en) * 1982-12-27 1984-07-11 信越ポリマ−株式会社 Magnetic shielding material for magnetic recording medium and magnetic shield mold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998008234A1 (en) * 1996-08-23 1998-02-26 Tokin Corporation Emi preventive part and active device with the same
WO2004097863A1 (en) * 2003-05-01 2004-11-11 Juridical Foundation Osaka Industrial Promotion Organization Magnetic material

Also Published As

Publication number Publication date
JP2687124B2 (en) 1997-12-08

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