JPH0473216B2 - - Google Patents

Info

Publication number
JPH0473216B2
JPH0473216B2 JP59028135A JP2813584A JPH0473216B2 JP H0473216 B2 JPH0473216 B2 JP H0473216B2 JP 59028135 A JP59028135 A JP 59028135A JP 2813584 A JP2813584 A JP 2813584A JP H0473216 B2 JPH0473216 B2 JP H0473216B2
Authority
JP
Japan
Prior art keywords
magnetic
back layer
layer
magnetic layer
light transmittance
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
JP59028135A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60173719A (ja
Inventor
Takahito Myoshi
Masaaki Fujama
Toshimitsu Okutsu
Kenichi Masuyama
Katsuo Nasu
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 JP59028135A priority Critical patent/JPS60173719A/ja
Priority to US06/702,550 priority patent/US4678697A/en
Publication of JPS60173719A publication Critical patent/JPS60173719A/ja
Publication of JPH0473216B2 publication Critical patent/JPH0473216B2/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
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • 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
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
JP59028135A 1984-02-17 1984-02-17 磁気記録媒体 Granted JPS60173719A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59028135A JPS60173719A (ja) 1984-02-17 1984-02-17 磁気記録媒体
US06/702,550 US4678697A (en) 1984-02-17 1985-02-19 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59028135A JPS60173719A (ja) 1984-02-17 1984-02-17 磁気記録媒体

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP7332723A Division JP2844179B2 (ja) 1995-11-27 1995-11-27 磁気記録テープ
JP7332724A Division JPH08212535A (ja) 1995-11-27 1995-11-27 磁気記録テープ

Publications (2)

Publication Number Publication Date
JPS60173719A JPS60173719A (ja) 1985-09-07
JPH0473216B2 true JPH0473216B2 (en]) 1992-11-20

Family

ID=12240323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59028135A Granted JPS60173719A (ja) 1984-02-17 1984-02-17 磁気記録媒体

Country Status (2)

Country Link
US (1) US4678697A (en])
JP (1) JPS60173719A (en])

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62125527A (ja) * 1985-11-27 1987-06-06 Teijin Ltd 磁気記録媒体
JPS62132214A (ja) * 1985-12-03 1987-06-15 Teijin Ltd 磁気記録媒体
JPH0673173B2 (ja) * 1985-12-25 1994-09-14 帝人株式会社 磁気記録媒体
JPS62231421A (ja) * 1986-03-31 1987-10-12 Konika Corp 磁気記録媒体
JPH02101628A (ja) * 1988-10-11 1990-04-13 Fuji Photo Film Co Ltd 磁気記録媒体
EP0373563A3 (en) * 1988-12-12 1991-09-18 Konica Corporation Magnetic recording medium
JPH08212535A (ja) * 1995-11-27 1996-08-20 Fuji Photo Film Co Ltd 磁気記録テープ
JP2844179B2 (ja) * 1995-11-27 1999-01-06 富士写真フイルム株式会社 磁気記録テープ

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5823647B2 (ja) * 1975-06-09 1983-05-17 富士写真フイルム株式会社 磁気記録体の製法
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
JPS6055889B2 (ja) * 1979-07-26 1985-12-07 日立マクセル株式会社 磁気デイスク
JPS5687232A (en) * 1979-12-14 1981-07-15 Hitachi Maxell Ltd Magnetic tape
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
JPS595429A (ja) * 1982-06-30 1984-01-12 Hitachi Maxell Ltd 磁気記録媒体
JPS5916139A (ja) * 1982-07-20 1984-01-27 Victor Co Of Japan Ltd 磁気記録媒体
JPS5922230A (ja) * 1982-07-29 1984-02-04 Victor Co Of Japan Ltd 磁気記録媒体
JPS5928242A (ja) * 1982-08-09 1984-02-14 Hitachi Maxell Ltd 磁気記録媒体
JPH0654536B2 (ja) * 1983-02-04 1994-07-20 富士写真フイルム株式会社 磁気記録媒体
US4562117A (en) * 1983-05-26 1985-12-31 Konishiroku Photo Industry Co., Ltd. Magnetic recording medium and a process of fabricating such magnetic recording medium

Also Published As

Publication number Publication date
JPS60173719A (ja) 1985-09-07
US4678697A (en) 1987-07-07

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