JPS6255208B2 - - Google Patents

Info

Publication number
JPS6255208B2
JPS6255208B2 JP58150157A JP15015783A JPS6255208B2 JP S6255208 B2 JPS6255208 B2 JP S6255208B2 JP 58150157 A JP58150157 A JP 58150157A JP 15015783 A JP15015783 A JP 15015783A JP S6255208 B2 JPS6255208 B2 JP S6255208B2
Authority
JP
Japan
Prior art keywords
magnetic
recording medium
powder
magnetic powder
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.)
Expired
Application number
JP58150157A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6069822A (ja
Inventor
Tadashi Ido
Osamu Kubo
Tatsumi Maeda
Masahiro Fukazawa
Tsutomu Nomura
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to JP58150157A priority Critical patent/JPS6069822A/ja
Priority to US06/639,317 priority patent/US4606971A/en
Priority to DE8484109547T priority patent/DE3480749D1/de
Priority to EP84109547A priority patent/EP0137949B1/en
Publication of JPS6069822A publication Critical patent/JPS6069822A/ja
Publication of JPS6255208B2 publication Critical patent/JPS6255208B2/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
    • G11B5/68—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
    • G11B5/714—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 dimension of the magnetic 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
    • 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
    • Y10T428/25—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

Landscapes

  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
JP58150157A 1983-08-19 1983-08-19 磁気記録媒体 Granted JPS6069822A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP58150157A JPS6069822A (ja) 1983-08-19 1983-08-19 磁気記録媒体
US06/639,317 US4606971A (en) 1983-08-19 1984-08-10 Magnetic recording medium
DE8484109547T DE3480749D1 (de) 1983-08-19 1984-08-10 Magnetisches aufzeichnungsmedium.
EP84109547A EP0137949B1 (en) 1983-08-19 1984-08-10 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58150157A JPS6069822A (ja) 1983-08-19 1983-08-19 磁気記録媒体

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP1232715A Division JPH0760514B2 (ja) 1989-09-11 1989-09-11 磁気記録媒体及びその製造方法

Publications (2)

Publication Number Publication Date
JPS6069822A JPS6069822A (ja) 1985-04-20
JPS6255208B2 true JPS6255208B2 (en, 2012) 1987-11-18

Family

ID=15490745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58150157A Granted JPS6069822A (ja) 1983-08-19 1983-08-19 磁気記録媒体

Country Status (4)

Country Link
US (1) US4606971A (en, 2012)
EP (1) EP0137949B1 (en, 2012)
JP (1) JPS6069822A (en, 2012)
DE (1) DE3480749D1 (en, 2012)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719363B2 (ja) * 1984-11-30 1995-03-06 日立マクセル株式会社 磁気記録媒体
US4714654A (en) * 1984-12-20 1987-12-22 Kabushiki Kaisha Toshiba Magnetic recording medium
GB2173811B (en) * 1985-04-05 1988-08-24 Tdk Corp Magnetic recording medium
GB2174710B (en) * 1985-04-22 1989-04-19 Tdk Corp Coating type perpendicular magnetic recording medium for digital recording
JPS61289522A (ja) * 1985-06-17 1986-12-19 Fuji Photo Film Co Ltd 磁気記録媒体
JPH0760512B2 (ja) * 1985-06-26 1995-06-28 富士写真フイルム株式会社 磁気記録媒体
JPH079694B2 (ja) * 1985-07-19 1995-02-01 ティーディーケイ株式会社 磁気記録媒体
JPH07109642B2 (ja) * 1985-07-19 1995-11-22 ティーディーケイ株式会社 磁気記録再生システム
JPH0715744B2 (ja) * 1985-08-13 1995-02-22 日立マクセル株式会社 磁気記録媒体
US4701372A (en) * 1985-09-18 1987-10-20 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
JPH0762881B2 (ja) * 1985-11-22 1995-07-05 ティーディーケイ株式会社 磁気記録再生システム
JPH077499B2 (ja) * 1986-01-29 1995-01-30 ソニー株式会社 磁気記録媒体
JPS62241135A (ja) * 1986-04-14 1987-10-21 Matsushita Electric Ind Co Ltd 磁気記録媒体
US4772522A (en) * 1986-07-21 1988-09-20 Tdk Corporation Magnetic recording medium
JPS6334726A (ja) * 1986-07-28 1988-02-15 Tdk Corp 磁気記録媒体
JPS6326822A (ja) * 1986-07-21 1988-02-04 Tdk Corp 磁気記録媒体
JPH0668828B2 (ja) * 1986-09-05 1994-08-31 富士写真フイルム株式会社 磁気記録媒体
DE3883336T2 (de) * 1987-09-30 1994-01-13 Toshiba Kawasaki Kk Magnetpulver zur magnetischen Registrierung hoher Informationsdichte sowie Magnetträger.
US5378384A (en) * 1991-09-19 1995-01-03 Minnesota Mining And Manufacturing Company Process of making hexagonal magnetic ferrite pigment for high density magnetic recording applications
US5230818A (en) 1991-12-20 1993-07-27 Eastman Kodak Company Coating compositions for master media for anhysteretic recording
JP3106271B2 (ja) * 1993-01-13 2000-11-06 富士写真フイルム株式会社 磁気記録媒体
US5616414A (en) * 1993-12-28 1997-04-01 Imation Corp. Hexagonal magnetic ferrite pigment for high density magnetic recording applications
JP2943909B2 (ja) * 1996-06-17 1999-08-30 富士写真フイルム株式会社 磁気記録媒体
JP2001297423A (ja) * 2000-04-10 2001-10-26 Fuji Photo Film Co Ltd 磁気記録媒体
WO2004001725A1 (en) * 2002-06-21 2003-12-31 Seagate Technology Llc Multilayer magnetic recording media
US20100173101A1 (en) * 2006-08-11 2010-07-08 Northeastern University Method of manufacturing thick-film, low microwave loss, self-biased barium-hexaferrite having perpendicular magnetic anisotropy
US7704614B2 (en) * 2006-10-20 2010-04-27 Seagate Technology Llc Process for fabricating patterned magnetic recording media
JP7077241B2 (ja) 2019-01-11 2022-05-30 富士フイルム株式会社 六方晶ストロンチウムフェライト粉末、磁気記録媒体および磁気記録再生装置

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023166A (en) * 1956-08-18 1962-02-27 Philips Corp Magnetic record carrier
JPS5854487B2 (ja) * 1977-08-29 1983-12-05 戸田工業株式会社 磁気記録材料用針状磁性酸化鉄粒子粉末の製造法
JPS5437927A (en) * 1977-08-31 1979-03-20 Matsushita Electric Works Ltd Liquid fuel burner
JPS6050323B2 (ja) * 1978-12-22 1985-11-08 株式会社東芝 高密度記録体
DE2904491A1 (de) * 1979-02-07 1980-08-21 Bayer Ag Plaettchenfoermige eisenoxidpigmente und verfahren zu deren herstellung sowie deren verwendung
JPS5667904A (en) * 1979-11-08 1981-06-08 Toshiba Corp Preparation method of megnetic powder for high density magnetic recording
JPS6012973B2 (ja) * 1980-05-08 1985-04-04 株式会社東芝 Ｂａ−フエライト粉末の製造方法
JPS6015577B2 (ja) * 1980-05-27 1985-04-20 株式会社東芝 磁気記録用磁性粉の製造方法
JPS57150130A (en) * 1981-03-12 1982-09-16 Fuji Photo Film Co Ltd Magnetic recording medium
JPS57195329A (en) * 1981-05-26 1982-12-01 Fuji Photo Film Co Ltd Magnetic recording medium
JPS586525A (ja) * 1981-07-02 1983-01-14 Toshiba Corp 磁気記録媒体
JPS586526A (ja) * 1981-07-02 1983-01-14 Toshiba Corp 磁気記録媒体
JPS5856302A (ja) * 1981-09-30 1983-04-04 Toshiba Corp 高密度磁気記録用磁性粉の製造方法
JPS5880136A (ja) * 1981-11-02 1983-05-14 Fuji Photo Film Co Ltd 磁気記録材料の製造方法
SE8106726L (sv) * 1981-11-12 1983-05-13 Bengtsson Sigurd W Snorlas
JPS58203625A (ja) * 1982-05-24 1983-11-28 Toshiba Corp 磁気記録媒体
JPS5996532A (ja) * 1982-11-25 1984-06-04 Fuji Photo Film Co Ltd 磁気記録体

Also Published As

Publication number Publication date
US4606971A (en) 1986-08-19
DE3480749D1 (de) 1990-01-18
EP0137949A2 (en) 1985-04-24
EP0137949B1 (en) 1989-12-13
EP0137949A3 (en) 1987-08-26
JPS6069822A (ja) 1985-04-20

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