DE3628874A1 - Magnetpulver fuer eine magnetische aufzeichnung hoher dichte und magnetisches aufzeichnungsmedium unter verwendung des magnetpulvers - Google Patents
Magnetpulver fuer eine magnetische aufzeichnung hoher dichte und magnetisches aufzeichnungsmedium unter verwendung des magnetpulversInfo
- Publication number
- DE3628874A1 DE3628874A1 DE19863628874 DE3628874A DE3628874A1 DE 3628874 A1 DE3628874 A1 DE 3628874A1 DE 19863628874 DE19863628874 DE 19863628874 DE 3628874 A DE3628874 A DE 3628874A DE 3628874 A1 DE3628874 A1 DE 3628874A1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- range
- magnetic recording
- recording medium
- magnetic powder
- 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
- 239000006247 magnetic powder Substances 0.000 title claims abstract description 30
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 229910052787 antimony Inorganic materials 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 229910052732 germanium Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 229910052715 tantalum Inorganic materials 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 229910020517 Co—Ti Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229910052712 strontium Inorganic materials 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 229910052788 barium Inorganic materials 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052745 lead Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 23
- 238000006467 substitution reaction Methods 0.000 description 18
- 239000000463 material Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 11
- 230000005415 magnetization Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052718 tin Inorganic materials 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 239000006249 magnetic particle Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 150000002500 ions Chemical group 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- 229910020810 Sn-Co Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 229910018757 Sn—Co Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- WETINTNJFLGREW-UHFFFAOYSA-N calcium;iron;tetrahydrate Chemical compound O.O.O.O.[Ca].[Fe].[Fe] WETINTNJFLGREW-UHFFFAOYSA-N 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(II) oxide Inorganic materials [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XMNVMZIXNKZAJB-UHFFFAOYSA-N iron(3+);lead(2+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Fe+3].[Fe+3].[Pb+2].[Pb+2] XMNVMZIXNKZAJB-UHFFFAOYSA-N 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910001432 tin ion Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002023 wood Substances 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
-
- 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
Landscapes
- Magnetic Record Carriers (AREA)
- Compounds Of Iron (AREA)
- Paints Or Removers (AREA)
- Hard Magnetic Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60190113A JP2509558B2 (ja) | 1985-08-29 | 1985-08-29 | 高密度磁気記録用磁性粉およびそれを用いた磁気記録用媒体 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3628874A1 true DE3628874A1 (de) | 1987-03-05 |
| DE3628874C2 DE3628874C2 (enrdf_load_stackoverflow) | 1989-10-12 |
Family
ID=16252595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19863628874 Granted DE3628874A1 (de) | 1985-08-29 | 1986-08-26 | Magnetpulver fuer eine magnetische aufzeichnung hoher dichte und magnetisches aufzeichnungsmedium unter verwendung des magnetpulvers |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2509558B2 (enrdf_load_stackoverflow) |
| KR (1) | KR900004750B1 (enrdf_load_stackoverflow) |
| DE (1) | DE3628874A1 (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3729497A1 (de) * | 1986-09-05 | 1988-03-10 | Nippon Zeon Co | Magnetisches pulver fuer magnetische aufzeichnungen |
| EP0526661A4 (en) * | 1991-02-27 | 1993-08-11 | Kabushiki Kaisha Toshiba | Magnetic powder for magnetic recording and magnetic recording medium made thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06104574B2 (ja) * | 1985-11-21 | 1994-12-21 | 日本ゼオン株式会社 | 塗布膜タイプの磁気記録用磁性粉 |
| JP3095047B2 (ja) * | 1993-01-28 | 2000-10-03 | 戸田工業株式会社 | 磁気カード用マグネトプランバイト型フェライト粒子粉末及びその製造法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4341648A (en) * | 1979-11-08 | 1982-07-27 | Tokyo Shibaura Denki Kabushiki Kaisha | Method for manufacturing magnetic powder for high density magnetic recording |
| DE3443049A1 (de) * | 1983-11-26 | 1985-06-05 | Ricoh Co., Ltd., Tokio/Tokyo | Eine magnetische metalloxydsubstanz und eine daraus bestehende magnetische schicht sowie deren verwendung |
-
1985
- 1985-08-29 JP JP60190113A patent/JP2509558B2/ja not_active Expired - Lifetime
-
1986
- 1986-08-26 DE DE19863628874 patent/DE3628874A1/de active Granted
- 1986-08-29 KR KR1019860007201A patent/KR900004750B1/ko not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4341648A (en) * | 1979-11-08 | 1982-07-27 | Tokyo Shibaura Denki Kabushiki Kaisha | Method for manufacturing magnetic powder for high density magnetic recording |
| DE3443049A1 (de) * | 1983-11-26 | 1985-06-05 | Ricoh Co., Ltd., Tokio/Tokyo | Eine magnetische metalloxydsubstanz und eine daraus bestehende magnetische schicht sowie deren verwendung |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3729497A1 (de) * | 1986-09-05 | 1988-03-10 | Nippon Zeon Co | Magnetisches pulver fuer magnetische aufzeichnungen |
| EP0526661A4 (en) * | 1991-02-27 | 1993-08-11 | Kabushiki Kaisha Toshiba | Magnetic powder for magnetic recording and magnetic recording medium made thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2509558B2 (ja) | 1996-06-19 |
| DE3628874C2 (enrdf_load_stackoverflow) | 1989-10-12 |
| KR900004750B1 (ko) | 1990-07-05 |
| KR870002554A (ko) | 1987-03-31 |
| JPS6251026A (ja) | 1987-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |