| 摘要 |
PURPOSE:To obviate hydrolysis by metal ions and to allow stable magneto clamping over a long period of time by incorporating a magnetic material into a polyolefin resin which is inert to metal ions, etc., and forming a hub. CONSTITUTION:The hub 6 consisting of a resin compsn. formed by incorporating the magnetic material into the polyolefin resin is fixed to a disk substrate 2 to form a substrate 1 for information recording of a magneto clamping system having the hub 6 which can be attracted to the magnet for clamping provided to a turn table. The information recording substrate 1 for information recording produced in such a manner is attracted to the magnet of the turn table by the magnetic material such as metal powder incorporated into the hub 6 and is thereby clamped and mounted to the hub. The deterioration of the hub 6 by the hydrolysis is obviated in this way and the magnet clamping is executed over a long period of time. |
