Method for producing diamond-like carbon film and tape driving apparatus.

摘要

A tape driving apparatus having a capstan axle and a pinch roller which presses a magnetic tape to the capstan axle, in which the capstan axle has, as an outermost layer, a diamond-like carbon film having a Knoop hardness of at least 5000 kg/mm<2>, and a density of not larger than 3 g/cm<3>, which has high reliability and good driving performances. <IMAGE>