JPS5856227A - 磁気記録媒体 - Google Patents
磁気記録媒体Info
- Publication number
- JPS5856227A JPS5856227A JP56153294A JP15329481A JPS5856227A JP S5856227 A JPS5856227 A JP S5856227A JP 56153294 A JP56153294 A JP 56153294A JP 15329481 A JP15329481 A JP 15329481A JP S5856227 A JPS5856227 A JP S5856227A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- powder
- al2o3
- recording medium
- particle size
- 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
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 47
- 239000000843 powder Substances 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims 1
- 239000006247 magnetic powder Substances 0.000 abstract description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 4
- 229910052593 corundum Inorganic materials 0.000 abstract 4
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 229910003465 moissanite Inorganic materials 0.000 abstract 1
- 229910052594 sapphire Inorganic materials 0.000 abstract 1
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910003145 α-Fe2O3 Inorganic materials 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- -1 cobalt modified iron oxide Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000012758 reinforcing additive Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910020630 Co Ni Inorganic materials 0.000 description 1
- 229910020637 Co-Cu Inorganic materials 0.000 description 1
- 229910002440 Co–Ni Inorganic materials 0.000 description 1
- 229910017112 Fe—C Inorganic materials 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 235000009754 Vitis X bourquina Nutrition 0.000 description 1
- 235000012333 Vitis X labruscana Nutrition 0.000 description 1
- 235000014787 Vitis vinifera Nutrition 0.000 description 1
- 240000006365 Vitis vinifera Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000009700 powder processing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
- 229910006297 γ-Fe2O3 Inorganic materials 0.000 description 1
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
- G11B5/708—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 addition of non-magnetic particles to the layer
- G11B5/7085—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 addition of non-magnetic particles to the layer non-magnetic abrasive particles
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56153294A JPS5856227A (ja) | 1981-09-28 | 1981-09-28 | 磁気記録媒体 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56153294A JPS5856227A (ja) | 1981-09-28 | 1981-09-28 | 磁気記録媒体 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5856227A true JPS5856227A (ja) | 1983-04-02 |
| JPH059846B2 JPH059846B2 (enrdf_load_stackoverflow) | 1993-02-08 |
Family
ID=15559323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56153294A Granted JPS5856227A (ja) | 1981-09-28 | 1981-09-28 | 磁気記録媒体 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5856227A (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55100666A (en) * | 1979-01-26 | 1980-07-31 | Matsushita Electric Ind Co Ltd | Manufacturing method of battery |
| JPH04241224A (ja) * | 1991-01-10 | 1992-08-28 | Fuji Photo Film Co Ltd | 磁気記録媒体及びその製造方法 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3719015A1 (de) * | 1987-06-06 | 1988-12-15 | Basf Ag | Verfahren zur herstellung von iminokohlensaeurediarylestern |
-
1981
- 1981-09-28 JP JP56153294A patent/JPS5856227A/ja active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55100666A (en) * | 1979-01-26 | 1980-07-31 | Matsushita Electric Ind Co Ltd | Manufacturing method of battery |
| JPH04241224A (ja) * | 1991-01-10 | 1992-08-28 | Fuji Photo Film Co Ltd | 磁気記録媒体及びその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH059846B2 (enrdf_load_stackoverflow) | 1993-02-08 |
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