APPARATUS FOR PRODUCING MAGNETIC RECORDING MEDIUM

摘要

PURPOSE:To produce a medium provided with a thin magnetic film having large saturation magnetization, high hardness and excellent stability by forming a thin iron nitride film by both means for ion implantation and vapor deposition on a support consisting of a nonmagnetic body for supporting a magnetic recording medium. CONSTITUTION:This apparatus has a nitrogen ion implanting device 1 and an evaporator 2 using iron as a member for evaporation and is provided with the implanting end of the device 1 and the member for evaporation of the evaporator 2 so as to face the nonmagnetic support. The support 3 is successive ly let off from a roller 4 and is so transferred as to be taken up by a roller 5. The nitrogen ions from the device 1 are accelerated to collide against the support 3 in the transfer process thus intruding into the surface of the support 3. on the other hard, iron is evaporated from the evaporator 2 and sticks similar ly on a target as the support 3. The nitrogen ions and the evaporating particles of the iron react with each other on the surface of the support 3 where the film of the iron nitride is formed.