JPS547075B2 - - Google Patents
Info
- Publication number
- JPS547075B2 JPS547075B2 JP5667373A JP5667373A JPS547075B2 JP S547075 B2 JPS547075 B2 JP S547075B2 JP 5667373 A JP5667373 A JP 5667373A JP 5667373 A JP5667373 A JP 5667373A JP S547075 B2 JPS547075 B2 JP S547075B2
- Authority
- JP
- Japan
- 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
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
- G11B5/712—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 surface treatment or coating of magnetic particles
-
- 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
- G11B5/706—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 composition of the magnetic material
- G11B5/70605—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 composition of the magnetic material metals or alloys
- G11B5/70615—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 composition of the magnetic material metals or alloys containing Fe metal or alloys
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Powder Metallurgy (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00255260A US3837912A (en) | 1972-05-22 | 1972-05-22 | Environmentally stable iron-based magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4941899A JPS4941899A (US20050075337A1-20050407-C00081.png) | 1974-04-19 |
| JPS547075B2 true JPS547075B2 (US20050075337A1-20050407-C00081.png) | 1979-04-03 |
Family
ID=22967541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5667373A Expired JPS547075B2 (US20050075337A1-20050407-C00081.png) | 1972-05-22 | 1973-05-21 |
Country Status (10)
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929658A (en) * | 1972-11-02 | 1975-12-30 | Du Pont | Magnetic recording compositions and elements of low abrasiveness and process for making them |
| CA1003707A (en) * | 1973-01-02 | 1977-01-18 | Duane G. Heikkinen | Fine-metal-particle-based magnetic recording medium of improved environmental stability |
| JPS59962B2 (ja) * | 1973-08-15 | 1984-01-10 | 富士写真フイルム株式会社 | ジキキロクバイタイヨウフンマツジセイザイリヨウ オヨビ セイゾウホウホウ |
| US3909240A (en) * | 1973-09-28 | 1975-09-30 | Graham Magnetics Inc | Method of producing acicular metal crystals |
| JPS5079800A (US20050075337A1-20050407-C00081.png) * | 1973-11-20 | 1975-06-28 | ||
| JPS5950722B2 (ja) * | 1975-12-08 | 1984-12-10 | ティーディーケイ株式会社 | キヨウジセイキンゾクアルイハゴウキンリユウシノトクセイレツカボウシホウホウ |
| JPS5272498A (en) * | 1975-12-12 | 1977-06-16 | Tdk Corp | Metal or alloy magnetic powder |
| DE2646348C2 (de) * | 1976-10-14 | 1986-08-28 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von nadelförmigen, ferromagnetischen, im wesentlichen aus Eisen bestehenden Metallteilchen und deren Verwendung zur Herstellung von magnetischen Aufzeichnungsträgern |
| DE2815712A1 (de) * | 1978-04-12 | 1979-10-25 | Bayer Ag | Eisenoxide zur magnetischen signalaufzeichnung und verfahren zu deren herstellung |
| US4382982A (en) * | 1979-12-07 | 1983-05-10 | Ici Australia Limited | Process for protecting magnetic particles with chromium oxide |
| DE3026696A1 (de) * | 1980-07-15 | 1982-02-18 | Basf Ag, 6700 Ludwigshafen | Ferromagnetische, im wesentlichen aus eisen bestehende metallteilchen mit einem oberflaechenueberzug, verfahren zu deren herstellung sowie ihre verwendung zur herstellung von magnetischen aufzeichnungstraegern |
| US4659627A (en) * | 1984-10-17 | 1987-04-21 | Memorex Corporation | Magnetic recording medium with lubricant |
| US4822637A (en) * | 1984-10-17 | 1989-04-18 | Memorex Corporation | Fabrication of magnetic recording medium with lubricant |
| US4686146A (en) * | 1986-02-18 | 1987-08-11 | Memorex Corporation | Radiation-cured recording composition with bi-part lube |
| SE0100236D0 (sv) | 2001-01-26 | 2001-01-26 | Hoeganaes Ab | Compressed soft magnetic materials |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3157532A (en) * | 1956-03-14 | 1964-11-17 | Onera (Off Nat Aerospatiale) | Methods of treating metallic powders |
| US3567525A (en) * | 1968-06-25 | 1971-03-02 | Du Pont | Heat treated ferromagnetic particles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2809731A (en) * | 1950-11-16 | 1957-10-15 | Vickers Inc | Magnetic particle coupling device with nickel-coated iron particles |
| GB761451A (en) * | 1953-06-26 | 1956-11-14 | Gen Electric | Improvements in or relating to magnetic recording media |
| FR1328501A (fr) * | 1962-04-19 | 1963-05-31 | Thomson Houston Comp Francaise | Revêtement métallisant de ferrites et dispositifs à ferrite utilisant ce revêtement |
| NL130686C (US20050075337A1-20050407-C00081.png) * | 1964-05-25 | |||
| US3632512A (en) * | 1969-02-17 | 1972-01-04 | Eastman Kodak Co | Method of preparing magnetically responsive carrier particles |
-
1972
- 1972-05-22 US US00255260A patent/US3837912A/en not_active Expired - Lifetime
-
1973
- 1973-04-27 CA CA169,727A patent/CA1011187A/en not_active Expired
- 1973-05-11 NL NL7306604A patent/NL7306604A/xx unknown
- 1973-05-21 IT IT50104/73A patent/IT988197B/it active
- 1973-05-21 JP JP5667373A patent/JPS547075B2/ja not_active Expired
- 1973-05-21 GB GB2422873A patent/GB1430676A/en not_active Expired
- 1973-05-21 BR BR3735/73A patent/BR7303735D0/pt unknown
- 1973-05-21 FR FR7318306A patent/FR2185828B1/fr not_active Expired
- 1973-05-21 AU AU55943/73A patent/AU450743B2/en not_active Expired
- 1973-05-21 AT AT440673A patent/AT355826B/de not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3157532A (en) * | 1956-03-14 | 1964-11-17 | Onera (Off Nat Aerospatiale) | Methods of treating metallic powders |
| US3567525A (en) * | 1968-06-25 | 1971-03-02 | Du Pont | Heat treated ferromagnetic particles |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1430676A (en) | 1976-03-31 |
| AT355826B (de) | 1980-03-25 |
| FR2185828B1 (US20050075337A1-20050407-C00081.png) | 1976-09-17 |
| JPS4941899A (US20050075337A1-20050407-C00081.png) | 1974-04-19 |
| FR2185828A1 (US20050075337A1-20050407-C00081.png) | 1974-01-04 |
| CA1011187A (en) | 1977-05-31 |
| AU5594373A (en) | 1974-07-18 |
| US3837912A (en) | 1974-09-24 |
| DE2326261B2 (de) | 1976-06-10 |
| IT988197B (it) | 1975-04-10 |
| BR7303735D0 (pt) | 1974-07-25 |
| NL7306604A (US20050075337A1-20050407-C00081.png) | 1973-11-26 |
| ATA440673A (de) | 1979-08-15 |
| DE2326261A1 (de) | 1973-11-29 |
| AU450743B2 (en) | 1974-07-18 |
