GB2016433B - - Google Patents
Info
- Publication number
- GB2016433B GB2016433B GB7908574A GB7908574A GB2016433B GB 2016433 B GB2016433 B GB 2016433B GB 7908574 A GB7908574 A GB 7908574A GB 7908574 A GB7908574 A GB 7908574A GB 2016433 B GB2016433 B GB 2016433B
- Authority
- GB
- United Kingdom
- 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 - Fee Related
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
- G11B5/706—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
- G11B5/70626—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 containing non-metallic substances
- G11B5/70642—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 containing non-metallic substances iron oxides
- G11B5/70678—Ferrites
- G11B5/70684—Ferro-ferrioxydes
- G11B5/70694—Non-stoechiometric ferro-ferrioxydes, e.g. berthollide
-
- 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
- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53030275A JPS5939814B2 (ja) | 1978-03-16 | 1978-03-16 | 磁気記録媒体の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2016433B true GB2016433B (US06650917-20031118-M00005.png) | |
| GB2016433A GB2016433A (en) | 1979-09-26 |
Family
ID=12299149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7908574A Withdrawn GB2016433A (en) | 1978-03-16 | 1979-03-12 | Magnetic recording medium |
Country Status (5)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677926A (en) * | 1979-11-28 | 1981-06-26 | Tdk Corp | Magnetic recording medium using cobalt adhesion type iron oxide |
| JPS5744223A (en) * | 1980-08-28 | 1982-03-12 | Toyo Ink Mfg Co Ltd | Magnetic recording medium |
| JPS5752106A (en) * | 1980-09-11 | 1982-03-27 | Tdk Corp | Magnetic powder for magnetic recording |
| JPS5928220A (ja) * | 1982-08-04 | 1984-02-14 | Hitachi Ltd | 厚膜形成用磁気記録組成物 |
| JPS5999706A (ja) * | 1982-11-29 | 1984-06-08 | Kanto Denka Kogyo Kk | 磁気記録用強磁性金属粉末の製造方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2100390A1 (de) * | 1970-03-11 | 1971-09-30 | Ampex | Verfahren zur Herstellung von nadel förmigen, metallhaltigen gamma Eisen III Oxid Teilchen |
| JPS5029157B1 (US06650917-20031118-M00005.png) * | 1971-05-27 | 1975-09-20 | ||
| JPS5225959B2 (US06650917-20031118-M00005.png) * | 1972-01-13 | 1977-07-11 | ||
| JPS5321118B2 (US06650917-20031118-M00005.png) * | 1973-03-05 | 1978-06-30 | ||
| US4112184A (en) * | 1975-09-25 | 1978-09-05 | Tdk Electronic Company | Magnetic recording medium and method of preparing |
-
1978
- 1978-03-16 JP JP53030275A patent/JPS5939814B2/ja not_active Expired
-
1979
- 1979-03-12 GB GB7908574A patent/GB2016433A/en not_active Withdrawn
- 1979-03-15 NL NLAANVRAGE7902046,A patent/NL180854C/xx not_active IP Right Cessation
- 1979-03-15 DE DE2910286A patent/DE2910286C2/de not_active Expired
-
1980
- 1980-04-25 US US06/143,895 patent/US4302510A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5939814B2 (ja) | 1984-09-26 |
| US4302510A (en) | 1981-11-24 |
| NL7902046A (nl) | 1979-09-18 |
| JPS54122103A (en) | 1979-09-21 |
| DE2910286C3 (US06650917-20031118-M00005.png) | 1988-12-22 |
| DE2910286A1 (de) | 1979-09-20 |
| GB2016433A (en) | 1979-09-26 |
| NL180854C (nl) | 1987-05-04 |
| DE2910286C2 (de) | 1982-10-21 |
| NL180854B (nl) | 1986-12-01 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950312 |