| 摘要 |
PURPOSE:To improve the light shielding property and electromagnetic transducing characteristic of the titled medium by setting the light transmittance in specified wavelength to a fixed value in the magnetic layer, the coating layer, and the whole medium. CONSTITUTION:The light transmittance in 900nm wavelength is controlled to >=2% in the magnetic layer, the light transmittance in 900nm wavelength is adjusted to 1-5% in the coating layer consisting of carbon black and an org. binder, and further the light transmittance in 900mn wavelength is regulated to <=0.05% in the whole medium having the magnetic layer and the coating layer. Consequently, a high-quality recording medium having excellent light shielding property and electromagnetic transducing characteristic can be obtained.
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