Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Shuji Tabuchi

Mamoru Shoji

Yoshihiro Kawasaki

Hidemi Isomura

Norikatsu Yoshida

Yoichi Yamamoto

Kazuya Hisada

Shinichi Maeda

Tomoaki Namekawa

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.

Disk magazine

A disc tray includes a bottom wall including an outer periphery and an inner rib supporter supporting the lowermost disc from below. The bottom wall is thickened from the outer periphery toward the inner rib supporter. The lowermost disc includes a data recording area, an inner rib, and an outer rib. When the lowermost disc is stationary, the outer rib of the lowermost disc and the upper surface of the bottom wall are separated by a gap. When the lowermost disc is inclined in such a manner that part of the outer rib of the lowermost disc comes into contact with the upper surface of the bottom wall, the data recording area of the lowermost disc and the upper surface of the bottom wall are separated by a gap greater than thickness of the outer or inner rib.

Disc tray and tray holder

An information recording medium of the present exemplified embodiment is configured by laminating a substrate having a predetermined thickness and a substrate having a predetermined thickness to each other. A film forming region including a recording region, a clamp region and a rib are formed on one surface of the information recording medium. A film forming region including a recording region, a clamp region and a rib are formed on the other surface of the information recording medium. On both surfaces, the components are formed in the order of the rib, the clamp region and the film forming region toward an outer peripheral side from an inner peripheral side.

Disk-shaped information recording medium, disk cartridge and information recording and reproducing apparatus

Optical disk

The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at an angle greater than or equal to 25 degrees and less than or equal to 35 degrees with respect to the non-inclined surface.

Disk-shaped information recording medium, disk cartridge, and information recording/reproducing apparatus

The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at a predetermined angle to the non-inclined surface and is larger than the non-inclined surface in the thin portion.

Growing community of inventors

Okayama, Japan

Shuji Tabuchi