JPH0252414B2 - - Google Patents

Info

Publication number: JPH0252414B2
Authority: JP; Japan
Prior art keywords: magnetic; cobalt; iron oxide; powder; magnetic powder
Prior art date: 1981-09-24
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

Application number

JP56151466A

Other languages

English (en)

Japanese (ja)

Other versions

JPS5852803A (ja

Inventor

Fumio Togawa

Shigeo Aoyama

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Maxell Ltd

Original Assignee

Hitachi Maxell Ltd

Priority date (The priority date 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 date listed.)

1981-09-24

Filing date

1981-09-24

Publication date

1990-11-13

1981-09-24 Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd

1981-09-24 Priority to JP56151466A priority Critical patent/JPS5852803A/ja

1983-03-29 Publication of JPS5852803A publication Critical patent/JPS5852803A/ja

1990-11-13 Publication of JPH0252414B2 publication Critical patent/JPH0252414B2/ja

Status Granted legal-status Critical Current

Links

UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 50
239000010941 cobalt Substances 0.000 claims description 32
229910017052 cobalt Inorganic materials 0.000 claims description 32
239000006247 magnetic powder Substances 0.000 claims description 32
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 29
239000002245 particle Substances 0.000 claims description 13
239000010410 layer Substances 0.000 claims description 11
230000004907 flux Effects 0.000 claims description 9
239000013078 crystal Substances 0.000 claims description 8
239000002344 surface layer Substances 0.000 claims description 3
230000005415 magnetization Effects 0.000 description 13
239000000843 powder Substances 0.000 description 8
229910001566 austenite Inorganic materials 0.000 description 7
YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
239000003973 paint Substances 0.000 description 6
239000007858 starting material Substances 0.000 description 6
239000011230 binding agent Substances 0.000 description 4
150000001868 cobalt Chemical class 0.000 description 4
ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
230000000052 comparative effect Effects 0.000 description 3
239000000203 mixture Substances 0.000 description 3
239000003960 organic solvent Substances 0.000 description 3
229920005989 resin Polymers 0.000 description 3
239000011347 resin Substances 0.000 description 3
239000000758 substrate Substances 0.000 description 3
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 2
WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
239000011248 coating agent Substances 0.000 description 2
238000000576 coating method Methods 0.000 description 2
JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
229920002554 vinyl polymer Polymers 0.000 description 2
SPBDXSGPUHCETR-JFUDTMANSA-N 8883yp2r6d Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1[C@@H](OC)C[C@H](O[C@@H]2C(=C/C[C@@H]3C[C@@H](C[C@@]4(O[C@@H]([C@@H](C)CC4)C(C)C)O3)OC(=O)[C@@H]3C=C(C)[C@@H](O)[C@H]4OC\C([C@@]34O)=C/C=C/[C@@H]2C)/C)O[C@H]1C.C1C[C@H](C)[C@@H]([C@@H](C)CC)O[C@@]21O[C@H](C\C=C(C)\[C@@H](O[C@@H]1O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C1)[C@@H](C)\C=C\C=C/1[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\1)O)C[C@H]4C2 SPBDXSGPUHCETR-JFUDTMANSA-N 0.000 description 1
239000000020 Nitrocellulose Substances 0.000 description 1
229920006311 Urethane elastomer Polymers 0.000 description 1
229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
239000003082 abrasive agent Substances 0.000 description 1
239000000654 additive Substances 0.000 description 1
239000002216 antistatic agent Substances 0.000 description 1
ULBTUVJTXULMLP-UHFFFAOYSA-N butyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCCC ULBTUVJTXULMLP-UHFFFAOYSA-N 0.000 description 1
238000006243 chemical reaction Methods 0.000 description 1
229940044175 cobalt sulfate Drugs 0.000 description 1
229910000361 cobalt sulfate Inorganic materials 0.000 description 1
KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
229920001577 copolymer Polymers 0.000 description 1
230000018044 dehydration Effects 0.000 description 1
238000006297 dehydration reaction Methods 0.000 description 1
230000005347 demagnetization Effects 0.000 description 1
239000002270 dispersing agent Substances 0.000 description 1
238000001035 drying Methods 0.000 description 1
235000003891 ferrous sulphate Nutrition 0.000 description 1
239000011790 ferrous sulphate Substances 0.000 description 1
238000007756 gravure coating Methods 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
239000012948 isocyanate Substances 0.000 description 1
-1 isocyanate compound Chemical class 0.000 description 1
239000000314 lubricant Substances 0.000 description 1
239000000696 magnetic material Substances 0.000 description 1
239000000463 material Substances 0.000 description 1
238000000034 method Methods 0.000 description 1
239000011859 microparticle Substances 0.000 description 1
229920001220 nitrocellulos Polymers 0.000 description 1
239000002985 plastic film Substances 0.000 description 1
229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
229920000728 polyester Polymers 0.000 description 1
229920002635 polyurethane Polymers 0.000 description 1
239000004814 polyurethane Substances 0.000 description 1
229920005749 polyurethane resin Polymers 0.000 description 1
229920006395 saturated elastomer Polymers 0.000 description 1
235000011121 sodium hydroxide Nutrition 0.000 description 1
239000006104 solid solution Substances 0.000 description 1
238000004381 surface treatment Methods 0.000 description 1
YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
238000005406 washing Methods 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/842—Coating a support with a liquid magnetic dispersion
- G11B5/845—Coating a support with a liquid magnetic dispersion in a magnetic field

Landscapes

Chemical & Material Sciences (AREA)
Dispersion Chemistry (AREA)
Paints Or Removers (AREA)
Magnetic Record Carriers (AREA)
Hard Magnetic Materials (AREA)

JP56151466A 1981-09-24 1981-09-24 磁気記録媒体 Granted JPS5852803A (ja)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
JP56151466A JPS5852803A (ja)	1981-09-24	1981-09-24	磁気記録媒体

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP56151466A JPS5852803A (ja)	1981-09-24	1981-09-24	磁気記録媒体

Publications (2)

Publication Number	Publication Date
JPS5852803A JPS5852803A (ja)	1983-03-29
JPH0252414B2 true JPH0252414B2 (de)	1990-11-13

Family

ID=15519143

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP56151466A Granted JPS5852803A (ja)	1981-09-24	1981-09-24	磁気記録媒体

Country Status (1)

Country	Link
JP (1)	JPS5852803A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0618061B2 (ja) *	1983-03-14	1994-03-09	日立マクセル株式会社	磁気記録媒体
JPS633404U (de) *	1986-06-25	1988-01-11
US4944985A (en) *	1988-04-11	1990-07-31	Leach & Garner	Method for electroless plating of ultrafine or colloidal particles and products produced thereby
JPH02204001A (ja) *	1989-02-02	1990-08-14	Meinan Mach Works Inc	合板及びその製造方法

1981
- 1981-09-24 JP JP56151466A patent/JPS5852803A/ja active Granted

Also Published As

Publication number	Publication date
JPS5852803A (ja)	1983-03-29

Publication	Publication Date	Title
US3573980A (en)	1971-04-06	Method of making magnetic particles and recording tape
US4677024A (en)	1987-06-30	Magnetic recording medium
JPS58139337A (ja)	1983-08-18	磁気記録媒体
US4239637A (en)	1980-12-16	Magnetic material for recording media
US3767464A (en)	1973-10-23	Magnetic recording member and method of producing same
US4444835A (en)	1984-04-24	Magnetic recording medium
US4465735A (en)	1984-08-14	Magnetic recording medium
JPH0219531B2 (de)	1990-05-02
JPH0252414B2 (de)	1990-11-13
US4480004A (en)	1984-10-30	Magnetic recording medium
JPH0719363B2 (ja)	1995-03-06	磁気記録媒体
JPH0618062B2 (ja)	1994-03-09	磁気記録媒体およびその製造方法
JPS6292128A (ja)	1987-04-27	磁気記録媒体
JPH03701B2 (de)	1991-01-08
JPS59129933A (ja)	1984-07-26	磁気記録媒体
JPS5852804A (ja)	1983-03-29	磁気記録媒体
JPH0619829B2 (ja)	1994-03-16	磁気記録媒体
JPS59127224A (ja)	1984-07-23	磁気記録媒体
JPH0628205B2 (ja)	1994-04-13	磁気記録媒体の製造方法
JPS59167854A (ja)	1984-09-21	磁気記録媒体
JPS59129935A (ja)	1984-07-26	磁気記録媒体
JPS59124023A (ja)	1984-07-18	磁気記録媒体
JPS5811085B2 (ja)	1983-03-01	ジキキロクタイ
JPS60115024A (ja)	1985-06-21	磁気記録媒体およびその製造方法
JPS6238531A (ja)	1987-02-19	磁気記録媒体