JPS57158013A - Magnetic recording body - Google Patents
Magnetic recording bodyInfo
- Publication number
- JPS57158013A JPS57158013A JP56042966A JP4296681A JPS57158013A JP S57158013 A JPS57158013 A JP S57158013A JP 56042966 A JP56042966 A JP 56042966A JP 4296681 A JP4296681 A JP 4296681A JP S57158013 A JPS57158013 A JP S57158013A
- Authority
- JP
- Japan
- Prior art keywords
- film
- plated layer
- alloy
- alloy plated
- film thickness
- 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
- 230000001681 protective effect Effects 0.000 abstract 3
- 239000000758 substrate Substances 0.000 abstract 3
- 229910000531 Co alloy Inorganic materials 0.000 abstract 2
- 229910000990 Ni alloy Inorganic materials 0.000 abstract 2
- 238000007772 electroless plating Methods 0.000 abstract 2
- 238000007747 plating Methods 0.000 abstract 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910018104 Ni-P Inorganic materials 0.000 abstract 1
- 229910018536 Ni—P Inorganic materials 0.000 abstract 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- 229910001096 P alloy Inorganic materials 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000005415 magnetization Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229920000642 polymer Polymers 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
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To form a recording medium suitable for vertical recording by an electroless plating method provides superior mass-producibility, by forming a specific Co-alloy plated layer on a metallic substrate with an Ni-alloy plated layer, and then providing a protective film on it. CONSTITUTION:On a metallic substrate, a Co-alloy plated layer whose easy magnetization axis is oriented mainly at right angles to the film surface is formed with an Ni-alloy plated layer interposed, and on it, a protective film is formed. For example, on an Al alloy plate whose surface is flattened and smoothed, an Ni-P plated film having 30mum film thickness is formed by using an electroless plating liquid, and both the surfaces are finished into specular surfaces. After a Co-Mn-P alloy film (having about 1mum film thickness) is formed on the surface of the substrate with prescribed plating bath composition and under plating conditions, an alcohol solution of tetrahydroxycyanogen is applied over rotation and then baked to be set, thus forming a protective film consisting essentially of a silicate polymer which has 0.1mum film thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56042966A JPS57158013A (en) | 1981-03-24 | 1981-03-24 | Magnetic recording body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56042966A JPS57158013A (en) | 1981-03-24 | 1981-03-24 | Magnetic recording body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57158013A true JPS57158013A (en) | 1982-09-29 |
| JPH0323975B2 JPH0323975B2 (en) | 1991-04-02 |
Family
ID=12650773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56042966A Granted JPS57158013A (en) | 1981-03-24 | 1981-03-24 | Magnetic recording body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57158013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008135171A (en) * | 2007-12-28 | 2008-06-12 | Showa Denko Kk | Method of manufacturing aluminum substrate for magnetic disk |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4929445A (en) * | 1972-07-20 | 1974-03-15 | ||
| JPS4942305A (en) * | 1972-04-14 | 1974-04-20 | ||
| JPS52134706A (en) * | 1976-05-06 | 1977-11-11 | Univ Tohoku | Vertical magnetic recorder reproducer and system therefor |
-
1981
- 1981-03-24 JP JP56042966A patent/JPS57158013A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4942305A (en) * | 1972-04-14 | 1974-04-20 | ||
| JPS4929445A (en) * | 1972-07-20 | 1974-03-15 | ||
| JPS52134706A (en) * | 1976-05-06 | 1977-11-11 | Univ Tohoku | Vertical magnetic recorder reproducer and system therefor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008135171A (en) * | 2007-12-28 | 2008-06-12 | Showa Denko Kk | Method of manufacturing aluminum substrate for magnetic disk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0323975B2 (en) | 1991-04-02 |
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