GB1176281A - Electrodeposited Composite Magnetic Tape - Google Patents
Electrodeposited Composite Magnetic TapeInfo
- Publication number
- GB1176281A GB1176281A GB04775/68A GB1477568A GB1176281A GB 1176281 A GB1176281 A GB 1176281A GB 04775/68 A GB04775/68 A GB 04775/68A GB 1477568 A GB1477568 A GB 1477568A GB 1176281 A GB1176281 A GB 1176281A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- magnetic
- nickel
- inches
- alloy
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
-
- 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
- H01F10/06—Thin magnetic films, e.g. of one-domain structure characterised by the coupling or physical contact with connecting or interacting conductors
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Magnetic Record Carriers (AREA)
Abstract
1,176,281. Magnetic structures. AMPEX CORP. 27 March, 1968 [3 April, 1967], No. 14775/68. Heading H1H. [Also in Division C7] A magnetic recording medium is produced by (a) vapour depositing a conductive layer of a non-ferromagnetic material on to a flexible plastics base member, (b) electrolytically depositing on the conductive layer a further layer of the same material, and (c) electrolytically depositing on said further layer a layer of magnetic material. The layers (a) and (b) may be of copper or nickel, the nickel in layer (b) being non-magnetic due to the inclusion of sodium hypophosphite in the bath for the layer, while the layer (c) is of 80 : 20 cobalt-nickel alloy or Co-Ni-Fe alloy and may be of high squareness. The plastics base member may be a cellulose acetate or polyester resin tape and may be coated by vacuum deposition with 1 to 2 Á Á inches of copper or nickel, electroplated with a further 20 to 40 Á inches of the same metal, and finally electroplated with 20 to 40 Á inches of the magnetic alloy.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62813367A | 1967-04-03 | 1967-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1176281A true GB1176281A (en) | 1970-01-01 |
Family
ID=24517615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB04775/68A Expired GB1176281A (en) | 1967-04-03 | 1968-03-27 | Electrodeposited Composite Magnetic Tape |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE712826A (en) |
| DE (1) | DE1299032B (en) |
| FR (1) | FR1559990A (en) |
| GB (1) | GB1176281A (en) |
| NL (1) | NL6803878A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2171944B1 (en) * | 1972-02-16 | 1976-10-29 | Honeywell Bull |
-
1968
- 1968-03-19 NL NL6803878A patent/NL6803878A/xx unknown
- 1968-03-25 FR FR1559990D patent/FR1559990A/fr not_active Expired
- 1968-03-27 GB GB04775/68A patent/GB1176281A/en not_active Expired
- 1968-03-27 BE BE712826D patent/BE712826A/xx unknown
- 1968-04-01 DE DEP1774077.1A patent/DE1299032B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE712826A (en) | 1968-07-31 |
| DE1299032B (en) | 1969-07-10 |
| NL6803878A (en) | 1968-10-04 |
| FR1559990A (en) | 1969-03-14 |
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