JPS5771524A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS5771524A JPS5771524A JP55148020A JP14802080A JPS5771524A JP S5771524 A JPS5771524 A JP S5771524A JP 55148020 A JP55148020 A JP 55148020A JP 14802080 A JP14802080 A JP 14802080A JP S5771524 A JPS5771524 A JP S5771524A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- layer
- alloy
- contg
- magnetic recording
- 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
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910000990 Ni alloy Inorganic materials 0.000 abstract 1
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 abstract 1
- 229910001096 P alloy Inorganic materials 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 238000007772 electroless plating Methods 0.000 abstract 1
- 238000009713 electroplating Methods 0.000 abstract 1
- -1 hypophosphite ions Chemical class 0.000 abstract 1
- 229910001004 magnetic alloy Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000007769 metal material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 229910001453 nickel ion Inorganic materials 0.000 abstract 1
- 238000007747 plating Methods 0.000 abstract 1
- 229920000728 polyester Polymers 0.000 abstract 1
- 229910052702 rhenium Inorganic materials 0.000 abstract 1
- 229910052703 rhodium Inorganic materials 0.000 abstract 1
- 229910052707 ruthenium Inorganic materials 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
Landscapes
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To provide a magnetic recording medium having a protecting layer of superior mechanical strength, adhesive strength to a magnetic recording layer, surface smoothness, etc. by forming a magnetic metallic layer, and the protecting layer consisting of a non-magnetic Ni-base alloy contg. a specific amt. of P on a base material successively. CONSTITUTION:A conductive layer 2 consisting of a non-magnetic metal of copper or the like, an underlying metallic layer 3 consisting of a non-magnetic metallic material such as nickel alloy, and a magnetic metallic layer 4 consisting of a magnetic alloy of Ni-Co-P alloy, etc. are formed successively on a base material 1 consisting of polyester or the like by an electroless plating or the like. Thence, a protecting layer 5 consisting of a non-magnetic Ni-base alloy contg. 1-15wt% P and more preferably further contg. hardness improving elements of >=one kind selected from Mo, W, Re, Ru and Rh at an amt. up to 20wt% is formed on the layer 4 by an electroplating method using a plating bath contg. bivalent nickel ions and hypophosphite ions or the like, whereby the intended magnetic recording medium is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55148020A JPS5771524A (en) | 1980-10-22 | 1980-10-22 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55148020A JPS5771524A (en) | 1980-10-22 | 1980-10-22 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5771524A true JPS5771524A (en) | 1982-05-04 |
Family
ID=15443304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55148020A Pending JPS5771524A (en) | 1980-10-22 | 1980-10-22 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5771524A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4724188A (en) * | 1984-06-07 | 1988-02-09 | C. Uyemura and Co. | Magnetic recording medium |
| US4735853A (en) * | 1985-05-15 | 1988-04-05 | Hitachi, Ltd. | Magnetic recording medium having an amorphous, nonmagnetic nickel-tungston-phosphorus underlayer |
-
1980
- 1980-10-22 JP JP55148020A patent/JPS5771524A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4724188A (en) * | 1984-06-07 | 1988-02-09 | C. Uyemura and Co. | Magnetic recording medium |
| US4735853A (en) * | 1985-05-15 | 1988-04-05 | Hitachi, Ltd. | Magnetic recording medium having an amorphous, nonmagnetic nickel-tungston-phosphorus underlayer |
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