GB2116455A - Two-layer coated magnetic recording medium - Google Patents

Two-layer coated magnetic recording medium

Info

Publication number
GB2116455A
GB2116455A GB08309438A GB8309438A GB2116455A GB 2116455 A GB2116455 A GB 2116455A GB 08309438 A GB08309438 A GB 08309438A GB 8309438 A GB8309438 A GB 8309438A GB 2116455 A GB2116455 A GB 2116455A
Authority
GB
United Kingdom
Prior art keywords
layer
recording medium
magnetic recording
layer coated
coated magnetic
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
GB08309438A
Other versions
GB2116455B (en
Inventor
Akira Ohtsuki
Ryozo Konno
Nobumori Kanno
Makio Sugai
Takashi Mihoya
Yuichi Kubota
Masaharu Nishimatsu
Yukihiro Isobe
Kazushi Tanaka
Osamu Shinoura
Hiroshi Kawahara
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
Original Assignee
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
Priority claimed from JP12944881A external-priority patent/JPS5832232A/en
Priority claimed from JP12944781A external-priority patent/JPS5832231A/en
Application filed by TDK Corp filed Critical TDK Corp
Publication of GB2116455A publication Critical patent/GB2116455A/en
Application granted granted Critical
Publication of GB2116455B publication Critical patent/GB2116455B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/716—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by two or more magnetic layers

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

A magnetic recording medium which has a first magnetic layer using a binder crosslinked and polymerized by emitted radiation, and a second magnetic layer provided over the first layer, on a nonmagnetic support. In this medium, the low frequency characteristics are improved, the pot life of the magnetic paint for the first layer is extended, and the characteristics are improved. When the same binder having a high coercive force as that for the first layer is used for the second layer, the high frequency characteristics can also be improved.
GB08309438A 1981-08-20 1982-08-19 Two-layer coated magnetic recording medium Expired GB2116455B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12944881A JPS5832232A (en) 1981-08-20 1981-08-20 Double layer coated magnetic recording medium
JP12944781A JPS5832231A (en) 1981-08-20 1981-08-20 Double layer coated magnetic recording medium

Publications (2)

Publication Number Publication Date
GB2116455A true GB2116455A (en) 1983-09-28
GB2116455B GB2116455B (en) 1985-05-15

Family

ID=26464825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08309438A Expired GB2116455B (en) 1981-08-20 1982-08-19 Two-layer coated magnetic recording medium

Country Status (3)

Country Link
DE (1) DE3248984T1 (en)
GB (1) GB2116455B (en)
WO (1) WO1983000767A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6050619A (en) * 1983-08-29 1985-03-20 Tdk Corp Magnetic disc and its production

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4712423B1 (en) * 1967-06-28 1972-04-17
JPS5421304A (en) * 1977-07-18 1979-02-17 Fuji Photo Film Co Ltd Double layer magnetic recording tape
JPS5448504A (en) * 1977-09-21 1979-04-17 Tdk Corp Magnetic recording medium
JPS6014406B2 (en) * 1978-03-20 1985-04-13 三菱レイヨン株式会社 Method for manufacturing magnetic recording tape
JPS5740746A (en) * 1980-08-25 1982-03-06 Sony Corp Magnetic recording medium

Also Published As

Publication number Publication date
GB2116455B (en) 1985-05-15
WO1983000767A1 (en) 1983-03-03
DE3248984C2 (en) 1989-10-26
DE3248984T1 (en) 1984-01-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010819