| 摘要 |
PURPOSE:To enhance the wear resistance and running stability, by forming a ferromagnetic thin film on a plastic film having granular, wrinkly or vermicular protrusions contg. fine particles allowed to locally exist therein on the surface. CONSTITUTION:Granular, wrinkly or vermicular protrusions 2, 2' having 50- 300Angstrom height and about 0.1-10mum intervals and contg. fine particles 3, 3' having 0.01-0.2mum diameter allowed to locally exist therein are formed on a substrate film 1, 1', and a ferromagnetic thin film 4, 4' is laid on the surfaces of the protrusions 2, 2' by vacuum deposition or other means. |
