Abstract: A disk cartridge includes a plate made of a metallic substance held on a counter chucking side of a flange formed in a center portion of a disk. The magnetic plate is housed inside a disk cartridge and has a height set at a dimension greater than the shortest axial dimension between a portion of the cartridge casing opposite the counter chucking surface of the flange and the facing surface of the disk.

Abstract: A recording and/or reproducing apparatus for recording and/or reproducing information signals with the use of a tape cassette is provided with a pair of reel shafts, each having an engaging member mounted with a bias towards the end of the supporting shaft, and a tape cassette transfer mechanism adapted for shifting the tape cassette inserted by way of the cassette inserting opening in a first direction normal to the reel shafts and guiding or loading the tape cassette for inserting and engaging the reel shafts with a pair of tape reels within the tape cassette.

Abstract: In a disk cartridge for charging therein a plurality of disks so that the disks are stacked therein, slide tabs for removing a desired disk are slidably provided along disk discharge and charge directions, and click engaging portions for temporarily locking the slide tabs at a predetermined positions along a sliding direction are offset by a predetermined amount along the sliding direction between the stages so as not to be aligned vertically along disk storage stages, thereby reducing a load of a drive mechanism for aligning the slide tabs at the side of the apparatus body.

Abstract: A disc player fitted for automatic change of discs comprises a disc pack receiving table for receiving and holding a disc pack containing a plurality of discs, a disc rotating device for rotating a disc taken out from the disc pack and loaded thereon, and a movable chassis operative to move up and down in relation to the disc pack receiving table and provided with a mechanical arrangement comprising a sliding lever for actuating a sliding member provided in the disc pack to take a selected disc out of the disc pack, a motor for rotating selectively in the clockwise and counterclockwise directions, a driving roller for being rotated with the rotatory driving force produced by the motor to carry the selected disc taken out from the disc pack to the disc rotating device, and a driving mechanism actuated with the rotatory driving force produced by the motor for driving the sliding lever in the manner for taking a disc out of the disc pack when the motor rotates in one of the clockwise and counterclockwise directi