| 摘要 |
PURPOSE:To improve the efficiency of vapor-deposition, by forming a magnetic layer on a substrate by a specific vacuum deposition method in the continuous production for a vertically magnetized recording medium. CONSTITUTION:A substrate 1 consisting of high-polymer materials which is fed from a supply roll 3 is wound up around a take-up roll 4 through a cylindrical can 2 which is rotated in the direction of an arrow A, and the steam from a vaporization source (such as Co-Cr alloy) 6 heated and melted by the irradiation of the electron beam is vapor-deposited to the substrate 1 through a slit S formed with masks 5 and 5 to form a vertically magnetized recording medium during this winding. In this vapor-deposition, the incidence angle (the acute angle between the normal direction of the substrate 1 and the incidence direction of the vaporized metal to the substrate 1) of the vaporized metal to the substrate 1 in the initial stage of formation of the magnetic layer (angle phi1) is made smaller than that in the latter stage of formation of the magnetic layer (angle phi2) (i), and the electron beam is irradiated to the vaporization source 6 so that an acceleration direction B faces to a movement direction A of the substrate 1 (ii). |
