Patent ID: 6296996
Filing Date: 2001-10-02
Classification: G03C,G11B

Abstract:
A transparent magnetic recording medium having, on a support, at least one magnetic recording layer containing magnetic particles,which medium comprisesa first set of protuberances having a height of 0.001 .mu.m or more than 0.001 .mu.m, but less than 0.1 .mu.m, and a density of from 1.times.10.sup.2 pieces/100 .mu.m.sup.2 to 1.times.10.sup.5 pieces/100 .mu.m.sup.2, anda second set of protuberances having a height of from 0.1 .mu.m to 0.5 .mu.m, and a density of from 1 piece/100 .mu.m.sup.2 to 200 pieces/100 .mu.m.sup.2,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 .mu.m or more but 1.0 .mu.m or less; andsaid medium containsat 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 .mu.m, but 1.5 .mu.m or less.