FR1222514A - Agent d'enregistrement magnétique et son procédé de fabrication - Google Patents
Agent d'enregistrement magnétique et son procédé de fabricationInfo
- Publication number
- FR1222514A FR1222514A FR780887A FR780887A FR1222514A FR 1222514 A FR1222514 A FR 1222514A FR 780887 A FR780887 A FR 780887A FR 780887 A FR780887 A FR 780887A FR 1222514 A FR1222514 A FR 1222514A
- Authority
- FR
- France
- Prior art keywords
- manufacturing process
- magnetic recording
- recording agent
- agent
- magnetic
- 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
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
- G11B5/70689—Magnetite
-
- 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
- G11B5/7023—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 containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1222514XA | 1957-12-19 | 1957-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1222514A true FR1222514A (fr) | 1960-06-10 |
Family
ID=22401592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR780887A Expired FR1222514A (fr) | 1957-12-19 | 1958-12-05 | Agent d'enregistrement magnétique et son procédé de fabrication |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1222514A (fr) |
-
1958
- 1958-12-05 FR FR780887A patent/FR1222514A/fr not_active Expired
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