JPH0481256B2 - - Google Patents

Info

Publication number
JPH0481256B2
JPH0481256B2 JP58145292A JP14529283A JPH0481256B2 JP H0481256 B2 JPH0481256 B2 JP H0481256B2 JP 58145292 A JP58145292 A JP 58145292A JP 14529283 A JP14529283 A JP 14529283A JP H0481256 B2 JPH0481256 B2 JP H0481256B2
Authority
JP
Japan
Prior art keywords
carbon black
magnetic
back layer
resins
binder
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.)
Expired - Lifetime
Application number
JP58145292A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6038725A (ja
Inventor
Takahito Myoshi
Kenichi Masuyama
Masahiro Uchiumi
Toshimitsu Okutsu
Masaaki Fujama
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP58145292A priority Critical patent/JPS6038725A/ja
Priority to US06/638,935 priority patent/US4582757A/en
Publication of JPS6038725A publication Critical patent/JPS6038725A/ja
Publication of JPH0481256B2 publication Critical patent/JPH0481256B2/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
    • 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
    • G11B5/7358—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 specially adapted for achieving a specific property, e.g. average roughness [Ra]
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y10T428/257—Iron oxide or aluminum oxide
    • 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
    • Y10T428/258—Alkali metal or alkaline earth metal or compound thereof
    • 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)
  • Lubricants (AREA)
  • Magnetic Record Carriers (AREA)
JP58145292A 1983-08-09 1983-08-09 磁気記録媒体 Granted JPS6038725A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP58145292A JPS6038725A (ja) 1983-08-09 1983-08-09 磁気記録媒体
US06/638,935 US4582757A (en) 1983-08-09 1984-08-09 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58145292A JPS6038725A (ja) 1983-08-09 1983-08-09 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS6038725A JPS6038725A (ja) 1985-02-28
JPH0481256B2 true JPH0481256B2 (enFirst) 1992-12-22

Family

ID=15381765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58145292A Granted JPS6038725A (ja) 1983-08-09 1983-08-09 磁気記録媒体

Country Status (2)

Country Link
US (1) US4582757A (enFirst)
JP (1) JPS6038725A (enFirst)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994027290A1 (fr) 1993-05-14 1994-11-24 Tdk Corporation Support d'enregistrement magnetique
US8603652B2 (en) 2010-03-10 2013-12-10 Fujifilm Corporation Magnetic recording medium

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59188830A (ja) * 1983-04-11 1984-10-26 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6185620A (ja) * 1984-10-04 1986-05-01 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6192425A (ja) * 1984-10-12 1986-05-10 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6199927A (ja) * 1984-10-19 1986-05-19 Fuji Photo Film Co Ltd 磁気記録媒体
JPH0734256B2 (ja) * 1985-05-29 1995-04-12 日本ビクター株式会社 磁気記録媒体
JPS61273734A (ja) * 1985-05-30 1986-12-04 Victor Co Of Japan Ltd 磁気記録媒体
JPH0766521B2 (ja) * 1985-07-04 1995-07-19 富士写真フイルム株式会社 磁気記録媒体
JPH0740351B2 (ja) * 1986-02-26 1995-05-01 富士写真フイルム株式会社 磁気記録媒体
US5089331A (en) * 1988-10-14 1992-02-18 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPH02134720A (ja) * 1988-11-14 1990-05-23 Konica Corp 非磁性粉を含有するバックコート層を設けた磁気記録媒体
JP2835747B2 (ja) * 1989-09-14 1998-12-14 コニカ株式会社 磁気記録媒体
JP2824974B2 (ja) * 1989-11-10 1998-11-18 ティーディーケイ株式会社 磁気テープカートリッジ
JP2876685B2 (ja) * 1989-12-29 1999-03-31 ソニー株式会社 磁気記録媒体
JP3014009B2 (ja) * 1991-01-11 2000-02-28 ミネソタ マイニング アンド マニュファクチャリング カンパニー 磁気記録媒体
JPH06203359A (ja) * 1991-03-15 1994-07-22 Tdk Corp 磁気記録媒体
US5512363A (en) * 1992-02-13 1996-04-30 Konica Corporation Magnetic recording medium having a magnetic layer containing magnetic powder and an underlayer containing two kinds of non magnetic powder
US5589247A (en) * 1992-12-22 1996-12-31 Minnesota Mining And Manufacturing Company Magnetic recording medium having an embossed backcoat layer
DE69407415T2 (de) * 1993-06-30 1998-05-14 Imation Corp Magnetische aufzeichnungsmedien mit neuem vernetzungsmittel
US5932330A (en) * 1993-09-30 1999-08-03 Imation Corp. Coated magnetic recording medium, paint for coated magnetic medium and method for producing coated magnetic medium
US6030695A (en) * 1996-03-28 2000-02-29 Imation Corp. Coated magnetic recording medium, paint for coated magnetic medium and method for producing coated magnetic medium

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5412805B1 (enFirst) * 1971-07-14 1979-05-25
JPS51113603A (en) * 1975-03-28 1976-10-06 Hitachi Maxell Ltd Magnetic tape
JPS5843817B2 (ja) * 1976-02-24 1983-09-29 富士写真フイルム株式会社 磁気記録体
JPS5753825A (en) * 1980-08-18 1982-03-31 Fuji Photo Film Co Ltd Magnetic recording medium
US4474843A (en) * 1980-08-18 1984-10-02 Fuji Photo Film Co., Ltd. Magnetic recording medium
JPS57130234A (en) * 1981-02-02 1982-08-12 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57169929A (en) * 1981-04-13 1982-10-19 Tdk Corp Magnetic recording medium and its manufacture
JPS57200938A (en) * 1981-06-05 1982-12-09 Tdk Corp Magnetic recording medium
JPS57208637A (en) * 1981-06-19 1982-12-21 Tdk Corp Magnetic recording medium
JPS5914127A (ja) * 1982-07-15 1984-01-25 Hitachi Maxell Ltd 磁気記録媒体

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994027290A1 (fr) 1993-05-14 1994-11-24 Tdk Corporation Support d'enregistrement magnetique
US8603652B2 (en) 2010-03-10 2013-12-10 Fujifilm Corporation Magnetic recording medium

Also Published As

Publication number Publication date
JPS6038725A (ja) 1985-02-28
US4582757A (en) 1986-04-15

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