JPS57143729A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57143729A
JPS57143729A JP56028196A JP2819681A JPS57143729A JP S57143729 A JPS57143729 A JP S57143729A JP 56028196 A JP56028196 A JP 56028196A JP 2819681 A JP2819681 A JP 2819681A JP S57143729 A JPS57143729 A JP S57143729A
Authority
JP
Japan
Prior art keywords
thin film
air gap
recording medium
magnetic recording
organic matter
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
JP56028196A
Other languages
English (en)
Other versions
JPH0480450B2 (ja
Inventor
Tatsuji Kitamoto
Ryuji Shirahata
Yasuyuki Yamada
Goro Akashi
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 JP56028196A priority Critical patent/JPS57143729A/ja
Priority to DE19823206746 priority patent/DE3206746A1/de
Priority to US06/352,220 priority patent/US4414271A/en
Priority to GB8205704A priority patent/GB2096018B/en
Publication of JPS57143729A publication Critical patent/JPS57143729A/ja
Publication of JPH0480450B2 publication Critical patent/JPH0480450B2/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/851—Coating a support with a magnetic layer by sputtering
    • 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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • 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
    • G11B5/702—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 the bonding agent
    • 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
    • G11B5/71—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 the lubricant
    • 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
    • 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
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP56028196A 1981-02-27 1981-02-27 Magnetic recording medium Granted JPS57143729A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56028196A JPS57143729A (en) 1981-02-27 1981-02-27 Magnetic recording medium
DE19823206746 DE3206746A1 (de) 1981-02-27 1982-02-25 Magnetischer aufzeichnungstraeger und verfahren zu seiner herstellung
US06/352,220 US4414271A (en) 1981-02-27 1982-02-25 Magnetic recording medium and method of preparation thereof
GB8205704A GB2096018B (en) 1981-02-27 1982-02-26 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56028196A JPS57143729A (en) 1981-02-27 1981-02-27 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57143729A true JPS57143729A (en) 1982-09-06
JPH0480450B2 JPH0480450B2 (ja) 1992-12-18

Family

ID=12241913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56028196A Granted JPS57143729A (en) 1981-02-27 1981-02-27 Magnetic recording medium

Country Status (4)

Country Link
US (1) US4414271A (ja)
JP (1) JPS57143729A (ja)
DE (1) DE3206746A1 (ja)
GB (1) GB2096018B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55125533A (en) * 1979-03-14 1980-09-27 Basf Ag Magnetic recording carrier and method of fabricating same
US4813768A (en) * 1986-11-04 1989-03-21 Toyota Jidosha Kabushiki Kaisha Liquid crystal device having an oblique evaporation film which is protected by a protective layer

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171029A (ja) * 1983-03-18 1984-09-27 Fuji Photo Film Co Ltd 磁気記録媒体
JPS59185022A (ja) * 1983-04-04 1984-10-20 Fuji Photo Film Co Ltd 磁気記録媒体
DE3421442A1 (de) * 1983-06-10 1984-12-13 Nippon Light Metal Co. Ltd., Tokio/Tokyo Verfahren zur herstellung eines magnetischen aufzeichnungsmediums
JPS60127527A (ja) * 1983-12-15 1985-07-08 Saiteku Kk 膜状積重磁気記録媒体およびその製造方法
DE3502852C2 (de) * 1984-02-01 1999-06-24 Tdk Corp Magnetisches Aufzeichnungsmaterial
JPH0719369B2 (ja) * 1984-02-02 1995-03-06 日本ビクター株式会社 磁気記録媒体及びその製造法
CA1235808A (en) * 1984-03-22 1988-04-26 Tetsuo Oka Vertical magnetic recording medium and process for preparation thereof
US4698280A (en) * 1984-09-14 1987-10-06 Konishiroku Photo Industry Co., Ltd. Magnetic recording medium
US4756856A (en) * 1984-12-20 1988-07-12 Polaroid Corporation Method of and apparatus for forming surface of magnetic media
JPS61229236A (ja) * 1985-04-03 1986-10-13 Fuji Photo Film Co Ltd 磁気記録媒体の製造方法
DE3789271T2 (de) * 1986-10-21 1994-07-14 Matsushita Electric Ind Co Ltd Magnetische Eisenoxydfilme und ihre Herstellung.
US4837080A (en) * 1986-11-18 1989-06-06 Matsushita Electric Industrial Co., Ltd. Magnetic recording mediums for high density recording comprising an improved structure of a magnetic layer
US5068152A (en) * 1987-11-26 1991-11-26 Hitachi Maxell, Ltd. Magnetic recording medium
JPH01195720A (ja) * 1988-01-04 1989-08-07 Nec Corp 半導体集積回路
JPH01182920A (ja) * 1988-01-13 1989-07-20 Hitachi Ltd 磁気記録媒体
DE69031250T2 (de) * 1989-06-09 1997-12-04 Matsushita Electric Ind Co Ltd Magnetisches Material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523427A (en) * 1975-06-27 1977-01-11 Ricoh Co Ltd Reflecting mirror's dust-proof device of duplicator's exposure mechani sm
JPS563428A (en) * 1979-06-20 1981-01-14 Fuji Photo Film Co Ltd Magnetic recording medium

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671034A (en) * 1950-12-16 1954-03-02 Julian S Steinfeld Method for producing magnetic recording tape
US3144353A (en) * 1963-03-08 1964-08-11 Ampex Polyolefin coated with thermoset coating used in magnetic recording media
NL134708C (ja) * 1963-11-07
US3320090A (en) * 1964-07-30 1967-05-16 Ampex Phenoxy-polyurethane magnetic tape binder
US3342632A (en) * 1964-08-05 1967-09-19 Ibm Magnetic coating
US3342633A (en) * 1964-08-05 1967-09-19 Ibm Magnetic coating
US3329601A (en) * 1964-09-15 1967-07-04 Donald M Mattox Apparatus for coating a cathodically biased substrate from plasma of ionized coatingmaterial
US3404997A (en) * 1965-05-10 1968-10-08 Ampex Magnetic recording media
US3574684A (en) * 1965-05-26 1971-04-13 Memorex Corp Polyurethane magnetic coating composition
FR1511664A (fr) * 1966-12-23 1968-02-02 Commissariat Energie Atomique Couches minces à fort champ coercitif
GB1189041A (en) 1967-02-27 1970-04-22 Memorex Corp A Magnetic Coating Composition, method for preparing a Magnetic Disk and the Disk thus prepared
US3516860A (en) * 1967-08-31 1970-06-23 Singer Co Method of forming a magnetic recording medium
US3700500A (en) * 1967-12-04 1972-10-24 Gen Electric Magnetic films having a predetermined coercivity
GB1244108A (en) * 1968-02-12 1971-08-25 Fuji Photo Film Co Ltd Magnetic recording medium
DE1800523A1 (de) * 1968-10-02 1970-07-02 Ibm Deutschland Verfahren zur Herstellung einer Magnetschicht mit niedriger Magnetostriktion und mit hoher Koerzitivkraft fuer magnetische Aufzeichnungstraeger
DE1907957B2 (de) * 1969-02-18 1977-07-21 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von flexiblen magnetogrammtraegern
US3615911A (en) * 1969-05-16 1971-10-26 Bell Telephone Labor Inc Sputtered magnetic films
US3772174A (en) * 1971-04-21 1973-11-13 Nasa Deposition of alloy films
US3781210A (en) * 1972-05-16 1973-12-25 Memorex Corp Magnetic coating composition
US3781211A (en) * 1972-08-10 1973-12-25 Memorex Corp Magnetic coating composition
US3856579A (en) * 1972-12-04 1974-12-24 Battelle Development Corp Sputtered magnetic materials comprising rare-earth metals and method of preparation
JPS5729769B2 (ja) * 1974-02-15 1982-06-24
GB1599161A (en) * 1976-07-15 1981-09-30 Matsushita Electric Ind Co Ltd Magnetic recording medium and method of making the same
DE2923682C2 (de) * 1978-06-13 1983-11-03 Nippon Electric Co., Ltd., Tokyo Magnetischer Aufzeichnungsträger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523427A (en) * 1975-06-27 1977-01-11 Ricoh Co Ltd Reflecting mirror's dust-proof device of duplicator's exposure mechani sm
JPS563428A (en) * 1979-06-20 1981-01-14 Fuji Photo Film Co Ltd Magnetic recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55125533A (en) * 1979-03-14 1980-09-27 Basf Ag Magnetic recording carrier and method of fabricating same
JPS6318247B2 (ja) * 1979-03-14 1988-04-18 Basf Ag
US4813768A (en) * 1986-11-04 1989-03-21 Toyota Jidosha Kabushiki Kaisha Liquid crystal device having an oblique evaporation film which is protected by a protective layer

Also Published As

Publication number Publication date
GB2096018A (en) 1982-10-13
US4414271A (en) 1983-11-08
DE3206746C2 (ja) 1990-04-12
GB2096018B (en) 1985-04-24
DE3206746A1 (de) 1982-09-16
JPH0480450B2 (ja) 1992-12-18

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