Transparent magnetic recording medium

Abstract

There is disclosed a transparent magnetic recording medium having, on a support, at least one magnetic recording layer containing magnetic particles, which medium comprises a first set of protuberances having a height of 0.001 μm or more than 0.001 μm, but less than 0.1 μm, and a density of from 1×102 pieces/100 μm2 to 1×105 pieces/100 μm2, and a second set of protuberances having a height of from 0.1 μm to 0.5 μm, and a density of from 1 piece/100 μm2 to 200 pieces/100 μm2, on a surface that is at the side of said at least one magnetic recording layer provided, wherein the difference of height between the first set of protuberances and the second set of protuberances is 0.1 μm or more but 1.0 μm or less; and said medium contains at least first and second kinds of inorganic particles and/or organic high-molecular particles, each of which has different average primary particle diameters, in at least the magnetic recording layer or an outer layer positioned such that the magnetic recording layer lies between said outer layer and said support, the average primary particle diameter of the first kind of the inorganic particles and/or organic high-molecular particles used to obtain the second set of protuberances being more than 0.4 μm, but 1.5 μm or less. This transparent magnetic recording medium is assuredly capable of recording/reproducing various magnetic information, with little occurrence of magnetic error.

Dependencies are inferred from the claim text.