MAGNETIC RECORDER

PURPOSE:To obtain a magnetic recorder which is hard for a disk-shaped recording medium to be damaged and excellent in durability by providing a folding part to fold a cutting part to a jacket inner wall side at an aperture part formed at a liner in accordance with the aperture for writing and reading. CONSTITUTION:A magnetic disk 12 fits the cylinder part of a hub 13 into a circular hole 19 in a jacket composed of an aperture 18 for writing and reading through liners 14 and 15 and a lower half 20 equipped with the circular hole 19 at the center and accommodated turnably. The liners 14 and 15 are constituted in a single body, folded at the part of apertures 16 and 18 for writing and reading and arranged so as to sandwich the disk 12 in the upper and lower directions. Penetrating holes 14a and 15a to idly insert the hub 13 are formed at the liners 14 and 15, cutting-in is formed to match to the shape of the apertures 16 and 18 at the position corresponding to the apertures 16 and 18, both sides of the cutting part are folded to the side opposite to the disk 12 and folding parts 14c and 15c are formed.