JPS6455731A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6455731A JPS6455731A JP62212437A JP21243787A JPS6455731A JP S6455731 A JPS6455731 A JP S6455731A JP 62212437 A JP62212437 A JP 62212437A JP 21243787 A JP21243787 A JP 21243787A JP S6455731 A JPS6455731 A JP S6455731A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- acicular
- contg
- coated
- iron 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
Links
Landscapes
- Compounds Of Iron (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE:To maintain an excellent erasing characteristic and to enhance coercive force by coating a resin compsn. contg. the acicular magnetic iron oxide particle powder the surfaces of which are coated with the double layers consisting of the lower layer which is a Co compd. layer and the upper layer which is a specific ferrite layer onto a substrate. CONSTITUTION:The resin compsn. contg. the acicular magnetic iron oxide particle powder the surfaces of which are coated with the double layers consisting of the lower layer which is the Co compd. layer and the upper layer which is the spinel type ferrite layer contg. Mn and Zn or any among Mn, Ni and Zn is coated on the substrate. Acicular maghemite particles, acicular magnetite particles and the particles contg. 1 or >=2 kinds among Co, Ni, Si, Al, Zn, P, etc., therein are used for the iron oxide particles. The ferrite layer is 1.0-10.0wt.% by the weight of Mn.Zn, Ni.Zn or Mn.Ni.Zn with respect to the weight of the acicular iron oxide particles coated with the Co compd. on the particle surfaces and the ratios of Mn.Ni and Mn.Ni are 0.1-80atm.% of Mn, Ni and Zn.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62212437A JP2583070B2 (en) | 1987-08-25 | 1987-08-25 | Magnetic recording media |
EP87309178A EP0265189B1 (en) | 1986-10-17 | 1987-10-16 | Acicular magnetic iron oxide particles, process for preparing the same, and magnetic recording media using such particles |
DE8787309178T DE3780903T2 (en) | 1986-10-17 | 1987-10-16 | NEEDLE SHAPED MAGNETIC IRON OXIDE PARTICLES, METHOD FOR THE PRODUCTION THEREOF AND MAGNETIC RECORDING CARRIERS USING SUCH PARTICLES. |
US07/559,426 US5120604A (en) | 1986-10-17 | 1990-07-26 | Acicular magnetic iron oxide particles and magnetic recording media using such particles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62212437A JP2583070B2 (en) | 1987-08-25 | 1987-08-25 | Magnetic recording media |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6455731A true JPS6455731A (en) | 1989-03-02 |
JP2583070B2 JP2583070B2 (en) | 1997-02-19 |
Family
ID=16622590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62212437A Expired - Fee Related JP2583070B2 (en) | 1986-10-17 | 1987-08-25 | Magnetic recording media |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2583070B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100616645B1 (en) * | 2004-12-24 | 2006-08-28 | 삼성전기주식회사 | Method of Manufacturing Magnetic Storage Device Having Single-Domain Ferrite Pillar Array |
-
1987
- 1987-08-25 JP JP62212437A patent/JP2583070B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100616645B1 (en) * | 2004-12-24 | 2006-08-28 | 삼성전기주식회사 | Method of Manufacturing Magnetic Storage Device Having Single-Domain Ferrite Pillar Array |
Also Published As
Publication number | Publication date |
---|---|
JP2583070B2 (en) | 1997-02-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1430675A (en) | Magnetic recording medium incorporating fine acicular iron-based particles | |
EP0962917A3 (en) | Magnetic recording medium | |
EP0377933A3 (en) | Magnetic iron oxide particles and method of producing the same | |
US4396668A (en) | Magnetic recording medium | |
EP0394034A3 (en) | Magnetic iron oxide particles | |
JPS6455731A (en) | Magnetic recording medium | |
JPS56109827A (en) | Manufacture of iron compound particle for magnetic recording medium | |
KR900002992B1 (en) | Magnetic recording carrier | |
JPS5733435A (en) | Magnetic recording medium | |
GB1450635A (en) | Magnetic recording tapes | |
JPS6427022A (en) | Magnetic recording medium and its production | |
GB1382724A (en) | Cobalt powders their preparation and use | |
GB1484958A (en) | Magnetic recording tapes | |
KR980005080A (en) | Cobalt Coated Needle-shaped Magnetic Iron Oxide Particles | |
JPS57111828A (en) | Magnetic recording medium | |
GB1457258A (en) | Magnetic recording media | |
KR870002554A (en) | High density magnetic recording magnetic component and magnetic recording medium using the same | |
JPS57164420A (en) | Magnetic recording medium | |
JPS57183629A (en) | Magnetic coat medium of vertical orientation and its production | |
KR900010666A (en) | Slave magnetic recording medium and manufacturing method thereof | |
EP0390391A3 (en) | A magnetic recording medium with improved electromagnetic conversion characteristics and anti-environment properties | |
JPH07114015B2 (en) | Magnetic recording medium | |
JPS6467713A (en) | Magnetic recording medium | |
JPS57143734A (en) | Magnetic recording medium | |
JPS56159839A (en) | Magnetic recording medium |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |