DE2841426B2 - - Google Patents
Info
- Publication number
- DE2841426B2 DE2841426B2 DE2841426A DE2841426A DE2841426B2 DE 2841426 B2 DE2841426 B2 DE 2841426B2 DE 2841426 A DE2841426 A DE 2841426A DE 2841426 A DE2841426 A DE 2841426A DE 2841426 B2 DE2841426 B2 DE 2841426B2
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- layer
- carrier
- pairs
- magnets
- 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 claims description 96
- 238000000034 method Methods 0.000 claims description 35
- 239000000843 powder Substances 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 230000005294 ferromagnetic effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 55
- 239000002245 particle Substances 0.000 description 24
- 239000000758 substrate Substances 0.000 description 19
- 239000006247 magnetic powder Substances 0.000 description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 239000006249 magnetic particle Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- 229910001004 magnetic alloy Inorganic materials 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage 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
-
- 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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11334877A JPS5447606A (en) | 1977-09-22 | 1977-09-22 | Production of magnetic recording media |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2841426A1 DE2841426A1 (de) | 1979-03-29 |
| DE2841426B2 true DE2841426B2 (https=) | 1980-11-20 |
| DE2841426C3 DE2841426C3 (de) | 1981-11-12 |
Family
ID=14609966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2841426A Expired DE2841426C3 (de) | 1977-09-22 | 1978-09-22 | Verfahren zur Herstellung eines magnetischen Aufzeichnungsmediums |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4189508A (https=) |
| JP (1) | JPS5447606A (https=) |
| DE (1) | DE2841426C3 (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3600076A1 (de) * | 1985-01-09 | 1986-07-10 | Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa | Verfahren und vorrichtung zum herstellen eines magnetischen aufzeichnungstraegers |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2912708A1 (de) * | 1979-03-30 | 1980-10-09 | Basf Ag | Datenspeichersystem und magnetscheiben dafuer |
| JPS56117336A (en) * | 1980-02-19 | 1981-09-14 | Sony Corp | Manufacture of magnetic recording medium |
| JPS59124039A (ja) * | 1982-12-29 | 1984-07-18 | Fuji Photo Film Co Ltd | 磁気記録媒体の製法 |
| JPS59223939A (ja) * | 1983-06-02 | 1984-12-15 | Victor Co Of Japan Ltd | 円盤状磁気記録媒体の配向処理装置 |
| JPS61187125A (ja) * | 1985-02-14 | 1986-08-20 | Hitachi Ltd | 磁気デイスクの磁場配向方法 |
| DE3523396A1 (de) * | 1985-06-29 | 1987-01-08 | Agfa Gevaert Ag | Verfahren zur herstellung eines magnetischen aufzeichnungsmaterials |
| JPS6280827A (ja) * | 1985-10-04 | 1987-04-14 | Hitachi Ltd | 磁気デイスク |
| US4824708A (en) * | 1985-11-11 | 1989-04-25 | Canon Kabushiki Kaisha | Process for producing magnetic recording medium |
| US5034243A (en) * | 1988-11-04 | 1991-07-23 | Hitachi, Ltd. | Method for magnetic orientation of magnetic recording medium using Meissner effect of high Tc superconductor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2444971A1 (de) * | 1974-09-20 | 1976-04-01 | Bayer Ag | Vorrichtung zur herstellung von magnetbaendern mit verbesserter ausrichtung |
-
1977
- 1977-09-22 JP JP11334877A patent/JPS5447606A/ja active Granted
-
1978
- 1978-09-18 US US05/943,123 patent/US4189508A/en not_active Expired - Lifetime
- 1978-09-22 DE DE2841426A patent/DE2841426C3/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3600076A1 (de) * | 1985-01-09 | 1986-07-10 | Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa | Verfahren und vorrichtung zum herstellen eines magnetischen aufzeichnungstraegers |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2841426A1 (de) | 1979-03-29 |
| US4189508A (en) | 1980-02-19 |
| JPS5645210B2 (https=) | 1981-10-24 |
| DE2841426C3 (de) | 1981-11-12 |
| JPS5447606A (en) | 1979-04-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8328 | Change in the person/name/address of the agent |
Free format text: STREHL, P., DIPL.-ING. DIPL.-WIRTSCH.-ING. SCHUEBEL-HOPF, U., DIPL.-CHEM. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN |