SEALED TYPE HARD DISK DEVICE

PURPOSE:To obtain the device using a hard disk container which prevents moisture in an atmosphere from entering and hold its internal pressure nearly constant by providing a sealed type container with a pressure requlating part which varies in capacity as pressure varies. CONSTITUTION:The sealed type container 1 which contains a disk 2, a magnetic disk 3, etc., and is filled with gaseous nitrogen, etc., is provided with the pressure requlating part 4 which varies in capacity according to pressure variation with temperature. This constitution prevents the moisture in the atmosphere from entering the container to hold the internal pressure nearly constant, and the hard disk device using the sealed hard disk 2 container which never deforms and is free from the flotation variation, etc., of the head 3.