Magnetic disk

摘要

A magnetic disk 20 includes a disk-like magnetic data recording medium 4 in which data are allowed to be read and written; and a disk case 2 which rotatably incorporates the magnetic data recording medium 4, liners 9 are bonded to faces of the case 2 which are opposed to a magnetic data recording plane 5 of the magnetic data recording medium 4, respectively. The liners attract dust by means of an electrostatic attractive force while supporting front and back sides of the magnetic data recording plane 5.