| 摘要 |
PURPOSE:To attain high density recording of multiplex information without mutual interference by superposing plural tracks with different azimuth angles. CONSTITUTION:The azimuth angle of a 1st track 4 is inclined from its tangen tial direction by 45 deg. as shown by slashes. Then a 2nd track 6 is superposed to the 1st track 4 so as to be slightly shifted. The azimuth angle of the 2nd track 6 is shifted from that of the 1st track 4 by about 90 deg.. Thereby, magnetic grains arranged in parallel with respective azimuth angles record individual static image information in the superposed part between the 1st and 2nd tracks 4, 6, so that these magnetic grains coexist with each other without strong inter- ference. |
