JPS57205824A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS57205824A JPS57205824A JP8879181A JP8879181A JPS57205824A JP S57205824 A JPS57205824 A JP S57205824A JP 8879181 A JP8879181 A JP 8879181A JP 8879181 A JP8879181 A JP 8879181A JP S57205824 A JPS57205824 A JP S57205824A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- magnetic recording
- base material
- fine particles
- titanium oxide
- 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
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
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/708—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by addition of non-magnetic particles to the layer
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To provide a light transmission preventing function which scarcely causes drop-out and a color noise, by making a base material film contain fine particles of titanium oxide. CONSTITUTION:In a film of the base material of a magnetic recording medium such as a polyester film, 1-6wt% titanium oxide is blended in the form of fine particles whose mean particle diameter is 1mu or preferably <=0.3mu.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8879181A JPS57205824A (en) | 1981-06-11 | 1981-06-11 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8879181A JPS57205824A (en) | 1981-06-11 | 1981-06-11 | Magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57205824A true JPS57205824A (en) | 1982-12-17 |
JPS6223367B2 JPS6223367B2 (en) | 1987-05-22 |
Family
ID=13952661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8879181A Granted JPS57205824A (en) | 1981-06-11 | 1981-06-11 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57205824A (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5254428A (en) * | 1975-10-23 | 1977-05-02 | Ici Ltd | Image forming photosensitive material |
JPS53136982A (en) * | 1977-05-06 | 1978-11-29 | Teijin Ltd | Polyester resin composition |
JPS54148832A (en) * | 1978-05-15 | 1979-11-21 | Teijin Ltd | Delustered polyester thin film and its production |
JPS5630438U (en) * | 1979-08-08 | 1981-03-24 | ||
JPS5683841A (en) * | 1979-12-11 | 1981-07-08 | Toray Ind Inc | Base film for magnetic recording |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5294637A (en) * | 1976-02-05 | 1977-08-09 | Howa Mach Ltd | Waterproof window |
-
1981
- 1981-06-11 JP JP8879181A patent/JPS57205824A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5254428A (en) * | 1975-10-23 | 1977-05-02 | Ici Ltd | Image forming photosensitive material |
JPS53136982A (en) * | 1977-05-06 | 1978-11-29 | Teijin Ltd | Polyester resin composition |
JPS54148832A (en) * | 1978-05-15 | 1979-11-21 | Teijin Ltd | Delustered polyester thin film and its production |
JPS5630438U (en) * | 1979-08-08 | 1981-03-24 | ||
JPS5683841A (en) * | 1979-12-11 | 1981-07-08 | Toray Ind Inc | Base film for magnetic recording |
Also Published As
Publication number | Publication date |
---|---|
JPS6223367B2 (en) | 1987-05-22 |
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