JPH059846B2 - - Google Patents
Info
- Publication number
- JPH059846B2 JPH059846B2 JP56153294A JP15329481A JPH059846B2 JP H059846 B2 JPH059846 B2 JP H059846B2 JP 56153294 A JP56153294 A JP 56153294A JP 15329481 A JP15329481 A JP 15329481A JP H059846 B2 JPH059846 B2 JP H059846B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- powder
- magnetic powder
- wear
- head
- 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 - Lifetime
Links
- 230000005291 magnetic effect Effects 0.000 claims description 34
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 26
- 239000006247 magnetic powder Substances 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 11
- 229920000728 polyester Polymers 0.000 claims description 6
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 claims description 4
- 229920005749 polyurethane resin Polymers 0.000 claims description 4
- 239000000843 powder Substances 0.000 description 10
- 208000035874 Excoriation Diseases 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000012758 reinforcing additive Substances 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229910000859 α-Fe Inorganic materials 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
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 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
- 238000004140 cleaning Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-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
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229920001568 phenolic resin 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
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire 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 JPS5856227A (ja) | 1983-04-02 |
| JPH059846B2 true JPH059846B2 (pt) | 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 (pt) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294686A2 (de) * | 1987-06-06 | 1988-12-14 | BASF Aktiengesellschaft | Verfahren zur Herstellung von Iminokohlensäurediarylestern |
Families Citing this family (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 |
| JP2700719B2 (ja) * | 1991-01-10 | 1998-01-21 | 富士写真フイルム株式会社 | 磁気記録媒体及びその製造方法 |
-
1981
- 1981-09-28 JP JP56153294A patent/JPS5856227A/ja active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294686A2 (de) * | 1987-06-06 | 1988-12-14 | BASF Aktiengesellschaft | Verfahren zur Herstellung von Iminokohlensäurediarylestern |
| EP0294686A3 (en) * | 1987-06-06 | 1990-03-21 | Basf Aktiengesellschaft | Process for the preparation of diaryliminocarbonates |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5856227A (ja) | 1983-04-02 |
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