| 摘要 |
PURPOSE:To obtain a thin metallic film type magnetic recording medium having a coefft. of friction which is hardly affected by speed, superior traveling stability and favorable enveloping characteristics, by forming a part contributing to traveling on the surface of a magnetic layer with gathered fine protrusions of a specified average diameter produced by diagonal vapor deposition in an oxygen atmosphere. CONSTITUTION:A magnetic layer is formed on a nonmagnetic substrate made of a polyester film, a polyimide type film such as a polyester imide film or a polyimide film, an aromatic polyamide film or the like. A part contributing to traveling on the surface of the magnetic layer is formed with gathered fine protrusions of 20-300Angstrom average diameter produced by diagonal vapor deposition in an oxygen atmosphere. The resulting magnetic recording medium has a coefft. of friction which is hardly affected by speed, high traveling stability and favorable enveloping characteristics, and the head cleaning effect of the gathered fine protrusions can be expected. |
