JPS57111828A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57111828A
JPS57111828A JP55186551A JP18655180A JPS57111828A JP S57111828 A JPS57111828 A JP S57111828A JP 55186551 A JP55186551 A JP 55186551A JP 18655180 A JP18655180 A JP 18655180A JP S57111828 A JPS57111828 A JP S57111828A
Authority
JP
Japan
Prior art keywords
supporter
magnetic
binder
recording medium
magnetic recording
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
JP55186551A
Other languages
Japanese (ja)
Other versions
JPH0357537B2 (en
Inventor
Takayasu Hirano
Takao Sakata
Shigeo Kimura
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP55186551A priority Critical patent/JPS57111828A/en
Publication of JPS57111828A publication Critical patent/JPS57111828A/en
Publication of JPH0357537B2 publication Critical patent/JPH0357537B2/ja
Granted 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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
    • G11B5/7356—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2

Abstract

PURPOSE:To prevent a disturbed or loose winding of a magnetic tape and to prevent the occurrence of a press damage of the tape, by forming a magnetic layer on a single surface of a nonmagnetic supporter and at the same time coating the carbon black along with a binder on the other surface of the supporter. CONSTITUTION:A magnetic layer 3 obtained by compounding the magnetic powder, a binder, an additive, etc. is formed on a single surface 2a of a nonmagnetic supporter 2 which forms a base of a magnetic tape 1, a kind of a magnetic recording medium. At the same time, the carbon black of 200mmu-1mu mean single particle diameter with 1m<2>/g-17m<2>/g relative surface area is coated on the other surface 2b of the supporter 2 along with a binder and a back coating material. With this coating material, a back coat layer 4 is formed on the surface 2b.
JP55186551A 1980-12-29 1980-12-29 Magnetic recording medium Granted JPS57111828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55186551A JPS57111828A (en) 1980-12-29 1980-12-29 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55186551A JPS57111828A (en) 1980-12-29 1980-12-29 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57111828A true JPS57111828A (en) 1982-07-12
JPH0357537B2 JPH0357537B2 (en) 1991-09-02

Family

ID=16190486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55186551A Granted JPS57111828A (en) 1980-12-29 1980-12-29 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57111828A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59218632A (en) * 1983-05-27 1984-12-08 Fuji Photo Film Co Ltd Magnetic recording medium
JPS59223937A (en) * 1983-06-03 1984-12-15 Fuji Photo Film Co Ltd Magnetic recording medium
JPS61145723A (en) * 1984-12-19 1986-07-03 Fuji Photo Film Co Ltd Magnetic recording medium
WO1987003413A1 (en) * 1985-11-22 1987-06-04 Minnesota Mining And Manufacturing Company Magnetic recording media
EP1645602A1 (en) * 2004-10-08 2006-04-12 Sun Chemical B.V. Coating composition, radiation-absorbing coating, coated support and use thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59218632A (en) * 1983-05-27 1984-12-08 Fuji Photo Film Co Ltd Magnetic recording medium
JPS59223937A (en) * 1983-06-03 1984-12-15 Fuji Photo Film Co Ltd Magnetic recording medium
JPS61145723A (en) * 1984-12-19 1986-07-03 Fuji Photo Film Co Ltd Magnetic recording medium
WO1987003413A1 (en) * 1985-11-22 1987-06-04 Minnesota Mining And Manufacturing Company Magnetic recording media
EP1645602A1 (en) * 2004-10-08 2006-04-12 Sun Chemical B.V. Coating composition, radiation-absorbing coating, coated support and use thereof
WO2006037656A1 (en) * 2004-10-08 2006-04-13 Sun Chemical Bv Coating composition, radiation-absorbing coating, coated support and use thereof

Also Published As

Publication number Publication date
JPH0357537B2 (en) 1991-09-02

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