DE1253004B - Process for the galvanic production of layer magnetogram carriers - Google Patents
Process for the galvanic production of layer magnetogram carriersInfo
- Publication number
- DE1253004B DE1253004B DEB68943A DEB0068943A DE1253004B DE 1253004 B DE1253004 B DE 1253004B DE B68943 A DEB68943 A DE B68943A DE B0068943 A DEB0068943 A DE B0068943A DE 1253004 B DE1253004 B DE 1253004B
- Authority
- DE
- Germany
- Prior art keywords
- layer
- electroplating
- gauss
- copper
- bath
- 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.)
- Pending
Links
- 239000000969 carrier Substances 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 230000005291 magnetic effect Effects 0.000 claims description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 238000009713 electroplating Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 150000002739 metals Chemical class 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000003792 electrolyte Substances 0.000 claims description 4
- 230000005294 ferromagnetic effect Effects 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 239000010974 bronze Substances 0.000 claims description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims 6
- 230000006698 induction Effects 0.000 claims 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 3
- 230000005415 magnetization Effects 0.000 claims 3
- UPPLJLAHMKABPR-UHFFFAOYSA-H 2-hydroxypropane-1,2,3-tricarboxylate;nickel(2+) Chemical compound [Ni+2].[Ni+2].[Ni+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O UPPLJLAHMKABPR-UHFFFAOYSA-H 0.000 claims 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims 2
- FERIUCNNQQJTOY-UHFFFAOYSA-M Butyrate Chemical compound CCCC([O-])=O FERIUCNNQQJTOY-UHFFFAOYSA-M 0.000 claims 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Natural products CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 claims 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims 2
- OIDPCXKPHYRNKH-UHFFFAOYSA-J chrome alum Chemical compound [K]OS(=O)(=O)O[Cr]1OS(=O)(=O)O1 OIDPCXKPHYRNKH-UHFFFAOYSA-J 0.000 claims 2
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims 2
- 239000002245 particle Substances 0.000 claims 2
- 229920006267 polyester film Polymers 0.000 claims 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims 1
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 claims 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 235000019270 ammonium chloride Nutrition 0.000 claims 1
- 150000003841 chloride salts Chemical class 0.000 claims 1
- 229920001577 copolymer Polymers 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- -1 ethylenediamine disodium cobalt tetraacetate Chemical compound 0.000 claims 1
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 claims 1
- 239000003446 ligand Substances 0.000 claims 1
- 229940099596 manganese sulfate Drugs 0.000 claims 1
- 239000011702 manganese sulphate Substances 0.000 claims 1
- 235000007079 manganese sulphate Nutrition 0.000 claims 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims 1
- 229910021645 metal ion Inorganic materials 0.000 claims 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims 1
- RBFRVUKIVGOWND-UHFFFAOYSA-L oxygen(2-);vanadium(4+);sulfate Chemical compound [O-2].[V+4].[O-]S([O-])(=O)=O RBFRVUKIVGOWND-UHFFFAOYSA-L 0.000 claims 1
- 229920000728 polyester Polymers 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 239000004332 silver Substances 0.000 claims 1
- 239000011877 solvent mixture Substances 0.000 claims 1
- 230000003068 static effect Effects 0.000 claims 1
- 229940095064 tartrate Drugs 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000011230 binding agent Substances 0.000 description 4
- 239000012255 powdered metal Substances 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Chemical class 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229920002125 Sokalan® Chemical class 0.000 description 1
- 150000001241 acetals Chemical class 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000004584 polyacrylic acid Chemical class 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
- 229920002223 polystyrene Chemical class 0.000 description 1
- 229920001289 polyvinyl ether Chemical class 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000000080 wetting agent 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
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
-
- 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
- G11B5/858—Producing a magnetic layer by electro-plating or electroless plating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Power Engineering (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Thin Magnetic Films (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Electroplating Methods And Accessories (AREA)
Description
DEUTSCHES #l# PATENTAMTGERMAN # l # PATENT OFFICE
DeutscheKI.: 48 a-5/58 DeutscheKI .: 48 a -5/58
Nummer: 1253 004Number: 1253 004
Aktenzeichen: B 68943 VI b/48 aFile number: B 68943 VI b / 48 a
1 253 004 Anmeldetag: 20.September 1962 1 253 004 filing date: September 20, 1962
Auslegetag: 26. Oktober 1967Opening day: October 26, 1967
Es ist bekannt, Schichtmagnetogrammträger, die aus einer Trägerfolie und einer darauf aufgebrachten magnetisierbaren Schicht eines ferromagnetischen Metalls bestehen, dadurch herzustellen, daß man auf eine Trägerfolie aus Kunststoff eine Schicht eines ferromagnetischen Materials, beispielsweise durch Aufdampfen im Hochvakuum bei Drücken von IO-3 bis IO-6 Torr, aufbringt. Es ist auch bekannt, die Trägerfolien dadurch mit einer magnetisierbaren Schicht zu versehen, daß man die feingepulverten Metalle in einem organischen Bindemittel homogen verteilt und diese Metalldispersionen beispielsweise durch Tauchen, Gießen, Aufsprühen oder durch Auftragen mit Walzen auf die Trägerfolie aufbringt.It is known to produce layered magnetogram carriers, which consist of a carrier film and a magnetizable layer of a ferromagnetic metal applied thereon, by placing a layer of a ferromagnetic material on a carrier film made of plastic, for example by vapor deposition in a high vacuum at pressures of IO -3 to IO -6 Torr. It is also known to provide the carrier films with a magnetizable layer by homogeneously distributing the finely powdered metals in an organic binder and applying these metal dispersions to the carrier film, for example by dipping, pouring, spraying or applying with rollers.
Es ist ferner bekannt, Magnetogrammträger dadurch herzustellen, daß man eine metallische magnetische Schicht auf galvanischem Wege auf einen Träger, z. B. nichtmagnetische Bänder und Drähte oder Papier, Gewebe oder andere biegsame Materialien, aufbringt, der vorher durch eine dünne Beschichtung aus Metall oder einen anderen geeigneten Stoff elektrisch leitend gemacht worden ist. Es ist schließlich auch bekannt, auf einen metallischen Träger auf galvanischem Wege eine magnetische metallische Schicht aus Kobalt oder Nickel oder Legierungen dieser Metalle aufzubringen. It is also known to produce magnetogram carriers by using a metallic magnetic Layer by galvanic means on a carrier, z. B. non-magnetic tapes and wires or paper, fabric or other flexible material, applied beforehand through a thin Coating made of metal or another suitable material has been made electrically conductive. Finally, it is also known to galvanically apply a magnetic carrier to a metallic carrier to apply metallic layer made of cobalt or nickel or alloys of these metals.
Es wurde gefunden, daß man Schichtmagnetogrammträger durch Aufbringen einer elektrisch leitenden Schicht auf eine Trägerfolie aus Kunststoff und Überziehen dieser Schicht mit einer weiteren, ein ferromagnetisches Metall enthaltenden Schicht in einem galvanischen Bad bei Stromstärken von 0,01 bis 20 A/dm2 mit verbesserten magnetischen Eigenschaften erhält, wenn man Elektrolyten verwendet, die neben den Verbindungen der VIII. Nebengruppe des Periodischen Systems Verbindungen der Metalle der V., VT. und VII. Nebengruppe des Periodischen Systems enthalten. Diese Verbindungen können in Form ihrer Salze, z. B. Chloride und Sulfate, aber auch als Komplexsalze zugesetzt werden. Sie ergeben bereits in Mengen von 0,1 bis 5 Gewichtsprozent eine deutliche Erhöhung der magnetischen Eigenschaften der galvanisch aufgebrachten Schicht.It has been found that layered magnetogram carriers can be obtained by applying an electrically conductive layer to a plastic carrier film and coating this layer with a further layer containing a ferromagnetic metal in an electroplating bath at currents of 0.01 to 20 A / dm 2 with improved magnetic properties Properties obtained when using electrolytes which, in addition to the compounds of subgroup VIII of the Periodic Table, compounds of the metals of the V., VT. and VII. subgroup of the periodic system. These compounds can be in the form of their salts, e.g. B. chlorides and sulfates, but also as complex salts can be added. Even in amounts of 0.1 to 5 percent by weight, they result in a significant increase in the magnetic properties of the electroplated layer.
Das Aufbringen der elektrisch leitenden Schicht kann in bekannter Weise durch Aufdampfen von
Metallen mit oder ohne Metalloxiden im Hochvakuum erfolgen. Es ist ferner möglich, solche
Schichten auf die Trägerfolie dadurch aufzubringen, daß man die Folie in eine Lösung eines Kupferoder
Silbersalzes eintaucht und diese mit einem Verfahren zur galvanischen Herstellung
von SchichtmagnetogrammträgernThe electrically conductive layer can be applied in a known manner by vapor deposition of metals with or without metal oxides in a high vacuum. It is also possible to apply such layers to the carrier film by immersing the film in a solution of a copper or silver salt and then using a process for galvanic production
of layer magnetogram carriers
Anmelder:Applicant:
Badische Anilin- & Soda-Fabrik
Aktiengesellschaft, Ludwigshafen/RheinAniline & Soda Factory in Baden
Aktiengesellschaft, Ludwigshafen / Rhein
Als Erfinder benannt:Named as inventor:
Dr. Adolf Diebold,Dr. Adolf Diebold,
Dipl.-Ing. Dr. Georg Böhm,Dipl.-Ing. Dr. Georg Boehm,
Franz Kühnel, Ludwigshafen/RheinFranz Kühnel, Ludwigshafen / Rhine
Reduktionsmittel behandelt. Die auf diese Weise auf eine Folie aufgebrachten Schichten zeigen jedoch eine nur geringe Haftfestigkeit. Eine bessere Haftfestigkeit kann dadurch erzielt werden, wenn man die feingepulverten Metalle in einem Bindemittel verteilt und die daraus resultierende Dispersion in bekannter Weise auf die Trägerfolie aufbringt. Als Bindemittel sind z. B. Acetyl- und Nitrocellulosen, chlorierte Polyvinylchloride, Polyvinylacetale, Polystyrole und Polyvinyläther, Polyacrylsäureester, Polyester und Epoxydharze geeignet, die man in organischen Lösungsmitteln zusammen mit Netz- und Dispergiermitteln, Metallpulvern und/oder Metallegierungen z. B. in Schwingmühlen miteinander vermischt. Man kann auch mit wässerigen Kunststoffemulsionen als Bindemittel arbeiten, die zusammen mit darin feinverteilten MetaIIpulvera auf die Folien aufgebracht und zu einem Film getrocknet werden. Man kann aber auch auf Kunststoffolien einen Klebstoff in Form der wässerigen Emulsion oder auch in organischen Lösungsmitteln gelöst aufbringen und die feingepulverten Metalle auf die noch feuchte Schicht aufsprühen.Treated reducing agent. However, the layers applied to a film in this way show only a low bond strength. Better adhesive strength can be achieved if the finely powdered metals are distributed in a binder and the resulting dispersion applies in a known manner to the carrier film. As binders, for. B. acetyl and nitrocelluloses, chlorinated polyvinyl chlorides, polyvinyl acetals, polystyrenes and polyvinyl ethers, polyacrylic acid esters, Polyester and epoxy resins are suitable, which can be used together with in organic solvents Wetting and dispersing agents, metal powders and / or metal alloys e.g. B. in vibrating mills with each other mixed. You can also work with aqueous plastic emulsions as binders, which together with metal powder finely distributed therein, applied to the foils and dried to form a film will. But you can also use an adhesive in the form of an aqueous emulsion on plastic films Or apply dissolved in organic solvents and apply the finely powdered metals to the still Spray on a damp layer.
Als elektrisch leitendes Material können z. B. Graphit, Kupfer, Bronze, Aluminium- oder Silberpulver eingesetzt werden. Mit besonderem Vorteil lassen sich auch ferromagnetische Metalle, z. B. Eisen, Nickel oder Kobalt, oder Gemische aus diesen Metallen und ihre Legierungen verwenden. Mit solchen Metallen beschichtete Trägerfolien stellen an sich schon brauchbare Magnetogrammträger dar, jedoch werden ihre magnetischen Eigenschaften durch die anschließende Galvanisierung noch erheblich verbessert.As an electrically conductive material, for. B. graphite, copper, bronze, aluminum or silver powder can be used. Ferromagnetic metals, e.g. B. Use iron, nickel or cobalt, or mixtures of these metals and their alloys. Carrier foils coated with such metals represent useful magnetogram carriers However, their magnetic properties are enhanced by the subsequent electroplating still vastly improved.
709 679/455709 679/455
Claims (2)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB68943A DE1253004B (en) | 1962-09-20 | 1962-09-20 | Process for the galvanic production of layer magnetogram carriers |
GB36687/63A GB997898A (en) | 1962-09-20 | 1963-09-18 | Production of magnetic tape |
FR948210A FR1372107A (en) | 1962-09-20 | 1963-09-20 | Process for the production of active layer magnetogram carriers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB68943A DE1253004B (en) | 1962-09-20 | 1962-09-20 | Process for the galvanic production of layer magnetogram carriers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1253004B true DE1253004B (en) | 1967-10-26 |
Family
ID=6976096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB68943A Pending DE1253004B (en) | 1962-09-20 | 1962-09-20 | Process for the galvanic production of layer magnetogram carriers |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1253004B (en) |
GB (1) | GB997898A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3704211A (en) * | 1971-05-19 | 1972-11-28 | Ibm | Process for electroplating magnetic films for high density recording |
US4191617A (en) * | 1979-03-30 | 1980-03-04 | The International Nickel Company, Inc. | Process for electroplating directly plateable plastic with cobalt alloy strike and article thereof |
US4195117A (en) * | 1979-03-09 | 1980-03-25 | The International Nickel Company, Inc. | Process for electroplating directly plateable plastic with nickel-iron alloy strike and article thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2619454A (en) * | 1945-08-30 | 1952-11-25 | Brush Dev Co | Method of manufacturing a magnetic recording medium by electrodeposition |
DE1091354B (en) * | 1957-01-22 | 1960-10-20 | Ncr Co | Method for producing a tape-shaped magnetogram carrier |
-
1962
- 1962-09-20 DE DEB68943A patent/DE1253004B/en active Pending
-
1963
- 1963-09-18 GB GB36687/63A patent/GB997898A/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2619454A (en) * | 1945-08-30 | 1952-11-25 | Brush Dev Co | Method of manufacturing a magnetic recording medium by electrodeposition |
DE1091354B (en) * | 1957-01-22 | 1960-10-20 | Ncr Co | Method for producing a tape-shaped magnetogram carrier |
Also Published As
Publication number | Publication date |
---|---|
GB997898A (en) | 1965-07-14 |
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