Method of manufacturing magnetic recording medium

摘要

When manufacturing a magnetic recording medium, depositing material in a crucible is heated to evaporate, and the vapor particles of the deposition material is continuously deposited on a continuous substrate material running along the peripheral surface of a cylindrical cooling can between a position where the vapor particles impinge upon the substrate material at a large angle and a position where the vapor particles impinge upon the substrate material at a small angle. The distance r( theta min) between the substrate material and the depositing material in the crucible when the vapor particles impinge upon the substrate material at a minimum incidence angle and the distance r( theta max) between the substrate material and the depositing material in the crucible when the vapor particles impinge upon the substrate material at a maximum incidence angle satisfy the formula 0.25