JPS54143118A - Production of magnetic disk - Google Patents
Production of magnetic diskInfo
- Publication number
- JPS54143118A JPS54143118A JP4981678A JP4981678A JPS54143118A JP S54143118 A JPS54143118 A JP S54143118A JP 4981678 A JP4981678 A JP 4981678A JP 4981678 A JP4981678 A JP 4981678A JP S54143118 A JPS54143118 A JP S54143118A
- Authority
- JP
- Japan
- Prior art keywords
- pigment
- foreign substance
- magnetic disk
- dispersed
- error
- 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
Abstract
PURPOSE: To eliminate the drawbacks due to the foreign substance in a coated film and to provide an error-free disk for high density recording purpose by filtering the undissolved resin before a pigment is dispersed.
CONSTITUTION: An binder additive containing no pigment and a solvent are filtered separately with the use of filters having smaller meshes than the diameters of the pigment and then are mixed with the pigment and dispersed. After the pigment is sufficiently dispersed, the filtration is performed with the use of a filter having a mesh equal to or larger than the diameter of the pigment, and then the application is performed to an aluminum substrate to form a magnetic layer. Then, the setting and characteristic checking operations are performed to provide a magnetic disk. Thus, there is no foreign substance larger than the pigment in the magnetic paint so that the drawback due to the foreign substance in the coated layer thereby to provide an error-free magnetic disk for the high density recording purpose.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4981678A JPS582419B2 (en) | 1978-04-28 | 1978-04-28 | Magnetic disk manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4981678A JPS582419B2 (en) | 1978-04-28 | 1978-04-28 | Magnetic disk manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54143118A true JPS54143118A (en) | 1979-11-08 |
JPS582419B2 JPS582419B2 (en) | 1983-01-17 |
Family
ID=12841634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4981678A Expired JPS582419B2 (en) | 1978-04-28 | 1978-04-28 | Magnetic disk manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS582419B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995015556A1 (en) * | 1993-12-01 | 1995-06-08 | Tdk Corporation | Production method of magnetic recording medium |
-
1978
- 1978-04-28 JP JP4981678A patent/JPS582419B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995015556A1 (en) * | 1993-12-01 | 1995-06-08 | Tdk Corporation | Production method of magnetic recording medium |
US5510140A (en) * | 1993-12-01 | 1996-04-23 | Tdk Corporation | Method for preparing magnetic recording medium |
EP1246172A1 (en) * | 1993-12-01 | 2002-10-02 | TDK Corporation | Method for preparing magnetic recording medium |
EP1246170A1 (en) * | 1993-12-01 | 2002-10-02 | TDK Corporation | Method for preparing magnetic recording medium |
EP1246171A1 (en) * | 1993-12-01 | 2002-10-02 | TDK Corporation | Method for preparing magnetic recording medium |
Also Published As
Publication number | Publication date |
---|---|
JPS582419B2 (en) | 1983-01-17 |
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