| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a magnetic recording medium in which a picture being identifiable from a surface of a magnetic recording reading side and having good aging stability is obtained, and since difference in level is not caused at a picture forming part while a picture is formed, output variation caused by difference in level is not caused. <P>SOLUTION: This magnetic recording medium has a picture formed by a picture forming reagent in a layered body formed by a plurality of layers including a basic layer and a magnetic recording layer, the picture can be recognized from a surface of the direction opposite to the basic layer of the layered body, the picture forming reagent is distributed in the film thickness direction and has a region having concentration gradient gradually decreasing toward the direction of the magnetic recording reading side from the center portion of the magnetic recording layer in the region of the reading side from the center portion of the magnetic recording layer in the layered body. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
