DE2914659A1 - Magnetisches speichermedium und verfahren zu dessen herstellung - Google Patents
Magnetisches speichermedium und verfahren zu dessen herstellungInfo
- Publication number
- DE2914659A1 DE2914659A1 DE19792914659 DE2914659A DE2914659A1 DE 2914659 A1 DE2914659 A1 DE 2914659A1 DE 19792914659 DE19792914659 DE 19792914659 DE 2914659 A DE2914659 A DE 2914659A DE 2914659 A1 DE2914659 A1 DE 2914659A1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- storage medium
- magnetic storage
- medium according
- pigment
- 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.)
- Withdrawn
Links
- 230000005291 magnetic effect Effects 0.000 title claims description 52
- 238000003860 storage Methods 0.000 title claims description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 8
- 239000000049 pigment Substances 0.000 claims description 34
- 239000006185 dispersion Substances 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 21
- 229920000642 polymer Polymers 0.000 claims description 21
- 239000004814 polyurethane Substances 0.000 claims description 19
- 229920002635 polyurethane Polymers 0.000 claims description 18
- 239000002270 dispersing agent Substances 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 125000000129 anionic group Chemical group 0.000 claims description 7
- 229920000388 Polyphosphate Polymers 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000001205 polyphosphate Substances 0.000 claims description 6
- 235000011176 polyphosphates Nutrition 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 5
- 229920000554 ionomer Polymers 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229920001451 polypropylene glycol Polymers 0.000 claims description 5
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 229920003169 water-soluble polymer Polymers 0.000 claims description 3
- 125000000524 functional group Chemical group 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 2
- 229920002845 Poly(methacrylic acid) Polymers 0.000 claims 1
- 229920002125 Sokalan® Polymers 0.000 claims 1
- 229940005740 hexametaphosphate Drugs 0.000 claims 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 1
- 239000000575 pesticide Substances 0.000 claims 1
- 239000004584 polyacrylic acid Substances 0.000 claims 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims 1
- 238000009827 uniform distribution Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 32
- 238000000576 coating method Methods 0.000 description 16
- 239000011248 coating agent Substances 0.000 description 12
- 229920003009 polyurethane dispersion Polymers 0.000 description 12
- -1 polyethylene Polymers 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- 238000003490 calendering Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000004922 lacquer Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 229920001519 homopolymer Polymers 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 230000019612 pigmentation Effects 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000002966 varnish Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 241001342895 Chorus Species 0.000 description 1
- 229910017135 Fe—O Inorganic materials 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 240000007673 Origanum vulgare Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000036621 balding Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- HAORKNGNJCEJBX-UHFFFAOYSA-N cyprodinil Chemical compound N=1C(C)=CC(C2CC2)=NC=1NC1=CC=CC=C1 HAORKNGNJCEJBX-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000004815 dispersion polymer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 1
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000029219 regulation of pH Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000012791 sliding layer Substances 0.000 description 1
- 235000019830 sodium polyphosphate Nutrition 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910000859 α-Fe 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
- G11B5/702—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
-
- 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
- G11B5/7013—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 dispersing agent
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/254—Polymeric or resinous material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
- Y10T428/257—Iron oxide or aluminum oxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31609—Particulate metal or metal compound-containing
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792914659 DE2914659A1 (de) | 1979-04-11 | 1979-04-11 | Magnetisches speichermedium und verfahren zu dessen herstellung |
| EP80101707A EP0017834B1 (de) | 1979-04-11 | 1980-03-31 | Magnetisches Speichermedium und Verfahren zu dessen Herstellung |
| DE8080101707T DE3060464D1 (en) | 1979-04-11 | 1980-03-31 | Magnetic recording medium and process for its manufacture |
| JP4631280A JPS55139631A (en) | 1979-04-11 | 1980-04-10 | Magnetic record medium and method of producing same |
| US06/352,208 US4404253A (en) | 1979-04-11 | 1982-02-25 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792914659 DE2914659A1 (de) | 1979-04-11 | 1979-04-11 | Magnetisches speichermedium und verfahren zu dessen herstellung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2914659A1 true DE2914659A1 (de) | 1980-10-23 |
Family
ID=6068065
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19792914659 Withdrawn DE2914659A1 (de) | 1979-04-11 | 1979-04-11 | Magnetisches speichermedium und verfahren zu dessen herstellung |
| DE8080101707T Expired DE3060464D1 (en) | 1979-04-11 | 1980-03-31 | Magnetic recording medium and process for its manufacture |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8080101707T Expired DE3060464D1 (en) | 1979-04-11 | 1980-03-31 | Magnetic recording medium and process for its manufacture |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4404253A (enExample) |
| EP (1) | EP0017834B1 (enExample) |
| JP (1) | JPS55139631A (enExample) |
| DE (2) | DE2914659A1 (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3226011A1 (de) * | 1981-07-13 | 1983-01-20 | Sony Corp., Tokyo | Magnetisches aufzeichnungsmedium |
| WO1993023795A1 (en) * | 1992-05-08 | 1993-11-25 | Micap Technology Corporation | Encapsulated magnetic particles, pigments and carbon black, compositions and methods related thereto |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2920334A1 (de) * | 1979-05-19 | 1980-12-04 | Basf Ag | Magnetische aufzeichnungstraeger |
| DE3064620D1 (en) * | 1979-05-28 | 1983-09-29 | Hitachi Maxell | Magnetic recording medium and process for its preparation |
| JPS5815573A (ja) * | 1981-07-22 | 1983-01-28 | Toyo Ink Mfg Co Ltd | 放射線硬化性磁性塗料および該塗料を用いて得られた磁気記録媒体 |
| JPS5864627A (ja) * | 1981-10-15 | 1983-04-18 | Sony Corp | 磁気記録媒体 |
| US4554214A (en) * | 1982-01-08 | 1985-11-19 | Seikoh Chemicals Co., Ltd. | Casting coating |
| JPS595424A (ja) * | 1982-07-01 | 1984-01-12 | Sony Corp | 磁気記録媒体 |
| JPS595423A (ja) * | 1982-07-01 | 1984-01-12 | Sony Corp | 磁気記録媒体 |
| US4454282A (en) * | 1983-03-21 | 1984-06-12 | International Business Machines Corporation | Water-based chromium dioxide magnetic recording media |
| GB2188641B (en) * | 1983-04-22 | 1988-02-10 | Ici Plc | Article having magnetic properties and production thereof |
| JPS6057527A (ja) * | 1983-09-08 | 1985-04-03 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| JPS6095722A (ja) * | 1983-10-28 | 1985-05-29 | Sony Corp | 磁気記録媒体 |
| JPS6142733A (ja) * | 1984-08-07 | 1986-03-01 | Konishiroku Photo Ind Co Ltd | 磁気記録媒体 |
| JPS61113125A (ja) * | 1984-11-06 | 1986-05-31 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| JPS62501661A (ja) * | 1985-02-06 | 1987-07-02 | メモレックス・コ−ポレ−ション | 水性熱硬化性磁気被覆組成物および製造方法 |
| JPH0715738B2 (ja) * | 1985-02-27 | 1995-02-22 | 花王株式会社 | 磁気記録媒体 |
| EP0193084B1 (en) * | 1985-03-01 | 1988-04-20 | Sumitomo Bayer Urethane Co.Ltd: | Magnetic recording medium, a process for preparing a magnetic recording medium and a binder composition therefor |
| US4668415A (en) * | 1986-02-12 | 1987-05-26 | E. I. Du Pont De Nemours And Company | Facilitation of orientation of thermotropic polymers in a magnetic field |
| NL8600421A (nl) * | 1986-02-20 | 1987-09-16 | Pd Magnetics Bv | Magnetisch registratie-element. |
| JPH0743818B2 (ja) * | 1986-05-07 | 1995-05-15 | 松下電器産業株式会社 | 磁気記録媒体 |
| JPH0785305B2 (ja) * | 1986-08-05 | 1995-09-13 | 富士写真フイルム株式会社 | 磁気記録媒体 |
| DE3629606A1 (de) * | 1986-08-30 | 1988-03-03 | Agfa Gevaert Ag | Verfahren zur herstellung von magnetischen aufzeichnungstraegern |
| US5188891A (en) * | 1987-12-25 | 1993-02-23 | Diafoil Company, Limited | Magnetic recording medium comprising a polyester film substrate, a magnetic coating and a specified back coat layer |
| US5064720A (en) * | 1988-08-25 | 1991-11-12 | Konica Corporation | Magnetic recording medium containing a polyurethane binder resin having a betaine group in the form of an intermolecular salt |
| JPH02302929A (ja) * | 1989-05-17 | 1990-12-14 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| US5371166A (en) * | 1993-12-22 | 1994-12-06 | The B. F. Goodrich Company | Polyurethane composition for use as a dispersing binder |
| EP0681288B1 (en) * | 1994-04-18 | 2003-06-11 | Eastman Kodak Company | Photographic elemet with a transparent magnetic film |
| US5531913A (en) * | 1995-03-10 | 1996-07-02 | Eastman Kodak Company | Haze-free transparent film-forming aqueous coating compositions for magnetic recording layers |
| US5707791A (en) * | 1995-01-18 | 1998-01-13 | Konica Corporation | Silver halide photographic light-sensitive material |
| JPH08259859A (ja) * | 1995-03-24 | 1996-10-08 | Dainippon Ink & Chem Inc | 磁性塗料組成物及びその製造方法 |
| US6051060A (en) * | 1997-12-04 | 2000-04-18 | Marconi Data Systems, Inc. | Method of making pigment with increased hydrophilic properties |
| DE19811791A1 (de) * | 1998-03-18 | 1999-09-23 | Borchers Gmbh | Wäßrige Dispersionen mit einer speziellen Dispergiermittelkombination |
| US6342561B1 (en) * | 1999-11-17 | 2002-01-29 | 3M Innovative Properties Company | Organic particulate-filled adhesive |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1096053B (de) * | 1958-10-17 | 1960-12-29 | Basf Ag | Verfahren zur Herstellung von Tontraegern |
| US3023123A (en) | 1958-12-02 | 1962-02-27 | Burroughs Corp | Forming stripes of magnetic material |
| FR1499121A (enExample) | 1964-12-08 | 1968-01-12 | ||
| CH1524468D (enExample) * | 1967-10-13 | 1900-01-01 | ||
| US3725285A (en) * | 1970-06-24 | 1973-04-03 | Ibm | Magnetic coating compositions |
| US4000336A (en) * | 1971-12-16 | 1976-12-28 | Badische Anilin- & Soda-Fabrik Aktiengesellschaft | Production of magnetic recording media |
| DE2250382C3 (de) | 1972-10-13 | 1978-03-30 | Agfa-Gevaert Ag, 5090 Leverkusen | Magnetisches Speichermedium |
| JPS5716640B2 (enExample) | 1973-06-30 | 1982-04-06 | ||
| JPS50102630A (enExample) | 1974-01-17 | 1975-08-14 | ||
| DD116248A1 (enExample) | 1974-11-08 | 1975-11-12 | ||
| DE2457972C3 (de) * | 1974-12-07 | 1980-07-31 | Akzo Gmbh, 5600 Wuppertal | Anionische Polyurethane |
| JPS5180998A (enExample) * | 1975-01-14 | 1976-07-15 | Fuji Photo Film Co Ltd | |
| JPS5816246B2 (ja) * | 1975-12-17 | 1983-03-30 | 日立マクセル株式会社 | ジキキロクタイ |
| JPS5274310A (en) * | 1975-12-17 | 1977-06-22 | Hitachi Maxell | Magnetic recording material |
| JPS5816245B2 (ja) * | 1975-12-17 | 1983-03-30 | 日立マクセル株式会社 | ジキキロクタイ |
| US4152485A (en) * | 1977-08-05 | 1979-05-01 | Toyo Boseki Kabushiki Kaisha | Magnetic recording medium |
| US4263188A (en) * | 1979-05-23 | 1981-04-21 | Verbatim Corporation | Aqueous coating composition and method |
-
1979
- 1979-04-11 DE DE19792914659 patent/DE2914659A1/de not_active Withdrawn
-
1980
- 1980-03-31 EP EP80101707A patent/EP0017834B1/de not_active Expired
- 1980-03-31 DE DE8080101707T patent/DE3060464D1/de not_active Expired
- 1980-04-10 JP JP4631280A patent/JPS55139631A/ja active Granted
-
1982
- 1982-02-25 US US06/352,208 patent/US4404253A/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3226011A1 (de) * | 1981-07-13 | 1983-01-20 | Sony Corp., Tokyo | Magnetisches aufzeichnungsmedium |
| WO1993023795A1 (en) * | 1992-05-08 | 1993-11-25 | Micap Technology Corporation | Encapsulated magnetic particles, pigments and carbon black, compositions and methods related thereto |
| US5543219A (en) * | 1992-05-08 | 1996-08-06 | A.B. Dick Company | Encapsulated magnetic particles pigments and carbon black, compositions and methods related thereto |
| US6187439B1 (en) | 1992-05-08 | 2001-02-13 | Marconi Data Systems Inc. | Encapsulated magnetic pigments, processes for their preparation and their uses |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0232687B2 (enExample) | 1990-07-23 |
| JPS55139631A (en) | 1980-10-31 |
| US4404253A (en) | 1983-09-13 |
| EP0017834A1 (de) | 1980-10-29 |
| EP0017834B1 (de) | 1982-05-26 |
| DE3060464D1 (en) | 1982-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0017834B1 (de) | Magnetisches Speichermedium und Verfahren zu dessen Herstellung | |
| DE2702526C2 (de) | Elektrostatographisches Ein-Komponenten-Entwicklerpulver und Verfahren zu dessen Herstellung | |
| DE3109765C2 (de) | Verfahren zur Herstellung eines magnetischen Aufzeichnungsträgers | |
| DE3328595C2 (enExample) | ||
| DE2916403A1 (de) | Nadelfoermiges magnetisches eisenoxid und verfahren zu seiner herstellung | |
| DE3138278C2 (enExample) | ||
| EP0570846B1 (de) | Flexible magnetische Aufzeichnungsträger mit Rückschicht | |
| EP0695794B1 (de) | Pigmentkonzentrat und dessen Verwendung | |
| EP0392360B1 (de) | Verfahren zur Herstellung von magnetischen Aufzeichnungsträgern | |
| DE2556267A1 (de) | Elektrischleitende waessrige ueberzugsmasse und damit ueberzogenes paier | |
| DE2262478A1 (de) | Papier zur elektrostatischen bilderzeugung und verfahren zur herstellung desselben | |
| DE3007218C2 (enExample) | ||
| DE2108595B2 (de) | Verfahren zur herstellung eines magnettonbandlackes und dessen verwendung | |
| DE1955699A1 (de) | Magnetisches Aufzeichnungsmedium | |
| DE3017652A1 (de) | Verfahren zur herstellung von magnetpulver | |
| EP0104378B1 (de) | Verfahren zur Herstellung von magnetischen Aufzeichnungsträgern | |
| DE4028202A1 (de) | Transferfolie mit magnetschichten | |
| DE69836481T2 (de) | Magnetaufzeichnungsträger | |
| DE2526793A1 (de) | Zusammensetzung und verfahren zum ueberziehen von magnetbaendern | |
| DE3432016A1 (de) | Verfahren zur herstellung von magnetischen aufzeichnungstraegern | |
| DE2714393C3 (de) | Folien aus regenerierter Cellulose mit verbesserter Aufrollbarkeit und Verfahren zu ihrer Herstellung | |
| EP0099536B1 (de) | Magnetischer Aufzeichnungsträger | |
| EP0374820B1 (de) | Magnetische Aufzeichnungsträger | |
| DE1447985C3 (de) | Verfahren zur Herstellung von Magnetogrammträgern | |
| DE2364878A1 (de) | Schichtmagnetogrammtraeger mit rueckseitenbeschichtung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8130 | Withdrawal |