A packaging storage container used for accommodating a sheet-like object includes a container bottom portion, a container cover portion, a ridge member and a tray. The container bottom portion and the container cover portion are hinged to the ridge member, and form a sealed container body with the ridge member. The tray is configured to hold the sheet-like object; the ridge member is provided with a pair of articulated shaft-receiving bases, the tray is connected to a pair of articulated shaft-receiving bases through an articulated shaft provided on the tray, an inner space for self-adaptive rotation and shock absorption of the articulated shaft is formed in the articulated shaft-receiving base, the articulated shaft is provided with a pair of flange portions, the longitudinal length of the articulated shaft between the pair of flange portions is configured to be accommodated in the inner space.

A packaging storage container used for accommodating a sheet-like object includes a container bottom portion, a container cover portion, a ridge member and a tray. The container bottom portion and the container cover portion are hinged to the ridge member, and form a sealed container body with the ridge member. The tray is configured to hold the sheet-like object; the ridge member is provided with a pair of articulated shaft-receiving bases, the tray is connected to a pair of articulated shaft-receiving bases through an articulated shaft provided on the tray, an inner space for self-adaptive rotation and shock absorption of the articulated shaft is formed in the articulated shaft-receiving base, the articulated shaft is provided with a pair of flange portions, the longitudinal length of the articulated shaft between the pair of flange portions is configured to be accommodated in the inner space.

Product packaging for electronic media discs including a tray component with hub portions arranged on one or more opposing surfaces of the tray for storage of a plurality of discs. Each tray component includes one or more tab portions for quick and easy assembly and disassembly with other trays such that any number of trays may be interconnected together providing customizable product packing.

A disk magazine according to the present disclosure is a disk magazine equipped with a resin-made disk tray that houses a plurality of disks in a stacked state and a tray holder that houses the disk tray. An opening is provided on one side surface of the tray holder so that the disk tray can be inserted into and extracted from the opening. A sliding member is mounted to a front wall of the disk tray so as to protrude more upward than a top surface of the disk tray. The front wall serves as a side where the disk tray is inserted into the opening. The sliding member is constituted of a resin material different from a resin material that constitutes the disk tray.

A disk magazine according to the present disclosure is a disk magazine equipped with a resin-made disk tray that houses a plurality of disks in a stacked state and a tray holder that houses the disk tray. An opening is provided on one side surface of the tray holder so that the disk tray can be inserted into and extracted from the opening. A sliding member is mounted to a front wall of the disk tray so as to protrude more upward than a top surface of the disk tray. The front wall serves as a side where the disk tray is inserted into the opening. The sliding member is constituted of a resin material different from a resin material that constitutes the disk tray.

Product packaging for electronic media discs comprising a tray component with hub portions arranged on one or more opposing surfaces of the tray for storage of a plurality of discs. Each tray component includes one or more tab portions for quick and easy assembly and disassembly with other trays such that any number of trays may be interconnected together providing customizable product packing.

A magnetic disk device according to one embodiment includes a base, five or more magnetic disks in the base, a head actuator, and a spindle motor. The base has a bottom wall having a second thickness and a side wall. The spindle motor includes a sleeve with a first hole, fixed to the bottom wall, a shaft inserted in the first hole rotatably, and a hub rotatable integrally with the shaft. The hub includes a first part, a second part extending from a lowermost surface of the first part in a first direction being from the magnetic disks toward the bottom wall, and a third part having a first thickness and extending from a lowermost surface of the second part in a second direction orthogonal to the first direction. A value obtained by dividing the second thickness by the first thickness is greater than or equal to 1.89.

A magnetic disk device according to one embodiment includes a base, five or more magnetic disks in the base, a head actuator, and a spindle motor. The base has a bottom wall having a second thickness and a side wall. The spindle motor includes a sleeve with a first hole, fixed to the bottom wall, a shaft inserted in the first hole rotatably, and a hub rotatable integrally with the shaft. The hub includes a first part, a second part extending from a lowermost surface of the first part in a first direction being from the magnetic disks toward the bottom wall, and a third part having a first thickness and extending from a lowermost surface of the second part in a second direction orthogonal to the first direction. A value obtained by dividing the second thickness by the first thickness is greater than or equal to 1.89.