JPS57143737A - Manufacture of magnetic recording medium - Google Patents
Manufacture of magnetic recording mediumInfo
- Publication number
- JPS57143737A JPS57143737A JP56029741A JP2974181A JPS57143737A JP S57143737 A JPS57143737 A JP S57143737A JP 56029741 A JP56029741 A JP 56029741A JP 2974181 A JP2974181 A JP 2974181A JP S57143737 A JPS57143737 A JP S57143737A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- painting material
- solvent
- dried
- drying
- 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 abstract 6
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- 238000010422 painting Methods 0.000 abstract 3
- 238000001035 drying Methods 0.000 abstract 2
- 239000012948 isocyanate Substances 0.000 abstract 2
- 239000013557 residual solvent Substances 0.000 abstract 2
- 239000000020 Nitrocellulose Substances 0.000 abstract 1
- 125000002723 alicyclic group Chemical group 0.000 abstract 1
- 125000003118 aryl group Chemical group 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000002270 dispersing agent Substances 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 150000002513 isocyanates Chemical class 0.000 abstract 1
- 238000006396 nitration reaction Methods 0.000 abstract 1
- 229920001220 nitrocellulos Polymers 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- 229920005862 polyol Polymers 0.000 abstract 1
- 150000003077 polyols Chemical class 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 230000003449 preventive effect Effects 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 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
-
- 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
- G11B5/702—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 bonding agent
- G11B5/7021—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 bonding agent containing a polyurethane or a polyisocyanate
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56029741A JPS57143737A (en) | 1981-03-02 | 1981-03-02 | Manufacture of magnetic recording medium |
| US06/353,791 US4391851A (en) | 1981-03-02 | 1982-03-02 | Process for producing a magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56029741A JPS57143737A (en) | 1981-03-02 | 1981-03-02 | Manufacture of magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57143737A true JPS57143737A (en) | 1982-09-06 |
| JPH0123856B2 JPH0123856B2 (enExample) | 1989-05-09 |
Family
ID=12284521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56029741A Granted JPS57143737A (en) | 1981-03-02 | 1981-03-02 | Manufacture of magnetic recording medium |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4391851A (enExample) |
| JP (1) | JPS57143737A (enExample) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121529A (ja) * | 1983-12-05 | 1985-06-29 | Konishiroku Photo Ind Co Ltd | 磁気記録媒体の製造方法 |
| JPS61175928A (ja) * | 1985-01-29 | 1986-08-07 | Fuji Photo Film Co Ltd | 磁気記録媒体の製造方法 |
| JPS6278719A (ja) * | 1985-08-30 | 1987-04-11 | Konishiroku Photo Ind Co Ltd | 磁気記録媒体の製造装置 |
| JPH0194532A (ja) * | 1987-10-06 | 1989-04-13 | Fuji Photo Film Co Ltd | 磁気記録媒体の製造方法 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2639647B1 (fr) * | 1988-10-18 | 1990-09-21 | Kodak Pathe | Milieu d'enregistrement magnetique |
| FR2638016A1 (fr) * | 1988-10-18 | 1990-04-20 | Kodak Pathe | Procede de traitement de surface de couches magnetiques |
| FR2638000B1 (fr) * | 1988-10-18 | 1990-12-14 | Kodak Pathe | Carte a memoire magnetique a grande capacite et procede de fabrication |
| FR2638001B1 (fr) * | 1988-10-18 | 1990-12-07 | Kodak Pathe | Carte magnetique a haute densite dont l'une des faces est susceptible de recevoir une image thermographique |
| US5158802A (en) * | 1988-10-20 | 1992-10-27 | Fuji Photo Film Co., Ltd. | Process for producing a magnetic recording material |
| WO1996006430A1 (en) * | 1994-08-22 | 1996-02-29 | Minnesota Mining And Manufacturing Company | Differential-speed gravure coating of magnetizable layers in the manufacture of magnetic recording media |
| US5447747A (en) * | 1994-08-22 | 1995-09-05 | Minnesota Mining And Manufacturing Company | Method and apparatus for smoothing gravure coatings in the manufacture of magnetic recording tape |
| AU2739700A (en) * | 1999-02-12 | 2000-08-29 | Trid Store Ip, L.L.C. | Optical recording medium for fluorescent worm discs |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5468328A (en) * | 1977-11-10 | 1979-06-01 | Tokyo Electric Co Ltd | Double printing system for dot printer |
-
1981
- 1981-03-02 JP JP56029741A patent/JPS57143737A/ja active Granted
-
1982
- 1982-03-02 US US06/353,791 patent/US4391851A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121529A (ja) * | 1983-12-05 | 1985-06-29 | Konishiroku Photo Ind Co Ltd | 磁気記録媒体の製造方法 |
| JPS61175928A (ja) * | 1985-01-29 | 1986-08-07 | Fuji Photo Film Co Ltd | 磁気記録媒体の製造方法 |
| JPS6278719A (ja) * | 1985-08-30 | 1987-04-11 | Konishiroku Photo Ind Co Ltd | 磁気記録媒体の製造装置 |
| JPH0194532A (ja) * | 1987-10-06 | 1989-04-13 | Fuji Photo Film Co Ltd | 磁気記録媒体の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US4391851A (en) | 1983-07-05 |
| JPH0123856B2 (enExample) | 1989-05-09 |
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