KR900002973B1 - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
KR900002973B1
KR900002973B1 KR8603993A KR860003993A KR900002973B1 KR 900002973 B1 KR900002973 B1 KR 900002973B1 KR 8603993 A KR8603993 A KR 8603993A KR 860003993 A KR860003993 A KR 860003993A KR 900002973 B1 KR900002973 B1 KR 900002973B1
Authority
KR
South Korea
Prior art keywords
magnetic recording
recording medium
pts
carbon black
coating layer
Prior art date
Application number
KR8603993A
Other languages
English (en)
Other versions
KR860009389A (ko
Inventor
Hiroshi Oikno
Yukio Matsumoto
Kumiko Ozima
Original Assignee
Victor Company Of Japan
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 Victor Company Of Japan filed Critical Victor Company Of Japan
Publication of KR860009389A publication Critical patent/KR860009389A/ko
Application granted granted Critical
Publication of KR900002973B1 publication Critical patent/KR900002973B1/ko

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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2998—Coated including synthetic resin or polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Lubricants (AREA)
KR8603993A 1985-05-30 1986-05-22 Magnetic recording medium KR900002973B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60115396A JPS61273734A (ja) 1985-05-30 1985-05-30 磁気記録媒体
JP115396 1985-05-30

Publications (2)

Publication Number Publication Date
KR860009389A KR860009389A (ko) 1986-12-22
KR900002973B1 true KR900002973B1 (en) 1990-05-03

Family

ID=14661520

Family Applications (1)

Application Number Title Priority Date Filing Date
KR8603993A KR900002973B1 (en) 1985-05-30 1986-05-22 Magnetic recording medium

Country Status (4)

Country Link
US (1) US4761331A (ko)
JP (1) JPS61273734A (ko)
KR (1) KR900002973B1 (ko)
DE (1) DE3617879A1 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2831672B2 (ja) * 1989-01-18 1998-12-02 花王株式会社 磁気記録媒体
JP2621565B2 (ja) * 1990-04-11 1997-06-18 松下電器産業株式会社 磁気記録媒体
US5510169A (en) * 1994-10-14 1996-04-23 Minnesota Mining And Manufacturing Company Magnetic recording medium with backside coating containing polymeric particles

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1271189C2 (de) * 1964-12-05 1973-09-06 Sony Corp Schichtmagnetogrammtraeger
DE2250383C3 (de) * 1972-10-13 1978-06-15 Agfa-Gevaert Ag, 5090 Leverkusen Magnetisierbares Speichermedium
JPS544613B2 (ko) * 1973-03-10 1979-03-08
JPS5922293B2 (ja) * 1976-09-16 1984-05-25 三菱電機株式会社 情報記録装置
US4299736A (en) * 1980-05-19 1981-11-10 Rca Corporation Conductive molding composition and discs therefrom
GB2098221B (en) * 1981-04-17 1985-02-06 Matsushita Electric Ind Co Ltd Method of producing video discs
JPS5928242A (ja) * 1982-08-09 1984-02-14 Hitachi Maxell Ltd 磁気記録媒体
US4584243A (en) * 1982-11-01 1986-04-22 Sumitomo Chemical Company, Limited Abrasive, production thereof and use thereof in magnetic recording medium
JPS59162624A (ja) * 1983-03-07 1984-09-13 Fuji Photo Film Co Ltd 磁気記録体
JPS59213029A (ja) * 1983-05-19 1984-12-01 Tdk Corp 磁気記録媒体
DE3418907A1 (de) * 1983-05-19 1984-11-22 Tdk Corp., Tokio/Tokyo Magnetisches aufzeichnungsmaterial
JPS607624A (ja) * 1983-06-27 1985-01-16 Matsushita Electric Ind Co Ltd 磁気記録媒体の製造方法
JPS6038725A (ja) * 1983-08-09 1985-02-28 Fuji Photo Film Co Ltd 磁気記録媒体
JP2557615B2 (ja) * 1983-09-16 1996-11-27 ティーディーケイ株式会社 磁気記録媒体及びその製造方法
JPS6066317A (ja) * 1983-09-20 1985-04-16 Tdk Corp 磁気記録媒体
JPS60103518A (ja) * 1983-11-09 1985-06-07 Tdk Corp 磁気記録媒体及びその製造方法
JPS60229227A (ja) * 1984-04-27 1985-11-14 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6139223A (ja) * 1984-07-31 1986-02-25 Tdk Corp 磁気記録媒体
JPS6185621A (ja) * 1984-10-04 1986-05-01 Fuji Photo Film Co Ltd 磁気記録媒体
JPH0618074B2 (ja) * 1984-10-25 1994-03-09 住友化学工業株式会社 磁気記録媒体

Also Published As

Publication number Publication date
US4761331A (en) 1988-08-02
DE3617879C2 (ko) 1990-06-21
DE3617879A1 (de) 1986-12-04
KR860009389A (ko) 1986-12-22
JPS61273734A (ja) 1986-12-04

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Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19930309

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee