Method for super calendering magnetic recording elements

摘要

In a method for super calendering a magnetic recording element comprising a non-magnetic flexible support having provided thereon a magnetic layer mainly composed of ferromagnetic powders and a binder using a super calendering roll assembly having a metal roll in contact with the magnetic layer side and an elastic roll in contact with the support side opposite the metal roll, which comprises pressing the surface of the magnetic layer to thereby super calender the same, at least the surface area of the elastic roll comprises a polyamide resin having a Shore hardness D of at least about 70 and having a linear expansion coefficient of at least about 8 x 10-5/ DEG C.