JPS5687232A - Magnetic tape - Google Patents
Magnetic tapeInfo
- Publication number
- JPS5687232A JPS5687232A JP16297379A JP16297379A JPS5687232A JP S5687232 A JPS5687232 A JP S5687232A JP 16297379 A JP16297379 A JP 16297379A JP 16297379 A JP16297379 A JP 16297379A JP S5687232 A JPS5687232 A JP S5687232A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic layer
- sufficiently
- magnetic
- black
- light
- 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To improve magnetic characteristics while decreasing light transmissivity sufficiently, by containing a black or blue pigment or dye in a base film, on which a magnetic layer is formed by being applied.
CONSTITUTION: In a base film on which a magnetic layer is formed by being applied, 12.5W20.0wt% black or blue pigment or dye superior in shielding effect against light of about 9,000Å in wavelength in contained. Consequently, light of about 9,000Å in wavelength detected by a sensor for detecting a magnetic tape terminal can effectively be occluded to decrease the light transmissivity sufficiently and the addition of the balck pigment, such as carbon black, to be contained in the magnetic layer can be reduced sufficiently in amount and also omitted, so that the magnetic characteristics can be improved with excellent smoothness of the magnetic layer surface.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16297379A JPS5687232A (en) | 1979-12-14 | 1979-12-14 | Magnetic tape |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16297379A JPS5687232A (en) | 1979-12-14 | 1979-12-14 | Magnetic tape |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5687232A true JPS5687232A (en) | 1981-07-15 |
Family
ID=15764791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16297379A Pending JPS5687232A (en) | 1979-12-14 | 1979-12-14 | Magnetic tape |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5687232A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60173719A (en) * | 1984-02-17 | 1985-09-07 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPS61237622A (en) * | 1985-04-16 | 1986-10-22 | Teijin Ltd | Polyester film |
-
1979
- 1979-12-14 JP JP16297379A patent/JPS5687232A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60173719A (en) * | 1984-02-17 | 1985-09-07 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPH0473216B2 (en) * | 1984-02-17 | 1992-11-20 | Fuji Photo Film Co Ltd | |
JPS61237622A (en) * | 1985-04-16 | 1986-10-22 | Teijin Ltd | Polyester film |
JPH0358581B2 (en) * | 1985-04-16 | 1991-09-05 | Teijin Ltd |
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