Abstract: A disk cartridge that has high durability with respect to a drop impact is provided. The disk cartridge includes: a disk-like recording medium; a cartridge case that rotatably accommodates the disk-like recording medium and is formed with a first opening that exposes a part of the disk-like recording medium; an inner rotor that is rotatably supported inside the cartridge case and includes a main surface portion formed with a second opening corresponding to the first opening; shutter members that are movable between a closing position at which the first opening is closed and an opening position at which the first opening is opened in accordance with a rotation of the inner rotor; and a buffer mechanism that is formed on the main surface portion of the inner rotor and includes rotary shafts that rotatably support the shutter members and elastic support portions that respectively support the rotary shafts and can be elastically deformed with respect to the main surface portion.

Abstract: Costs are reduced by rationalizing the process while maintaining the sliding performance with respect to a optical disk and a disk table and the reliability is improved. A plate 21 having a slidability film 17, which has heat-resistant, non-adhesive characteristics, on one side thereof is used as a material. A chucking plate is formed by subjecting the plate 21 to predetermined press processing from a side at which the slidability film is not formed, and is attached to a cartridge housing 2 such that a slidability-film-applied surface 8d faces a disk 5.

Abstract: A disk cartridge is provided. The disk cartridge includes a cartridge case including an upper shell having an inner circumferential wall and a lower shell having a first opening for recording and/or playback; an inner rotor rotatably disposed in the cartridge case and having a second opening corresponding to the first opening and an annular portion on the periphery thereof; and shutter members disposed between the inner rotor and the lower shell and rotatably attached to the inner rotor. The shutter members open the first and second openings when the inner rotor rotates so that the second opening agrees with the first opening. The inner circumferential wall of the upper shell is disposed inside the annular portion. The inner rotor has a groove opposite the leading end of the inner circumferential wall inside the annular portion. The groove has a width larger than the thickness of the leading end of the inner circumferential wall.

Abstract: An information recording medium cartridge is provided with a disc, a cartridge casing having the disc accommodated therein, first and second shutters movably mounted to the cartridge casing for opening and closing recording and/or reproducing openings arranged in right and reverse sides thereof. First and second slide members having the first and second shutters are mounted on the shutters. First and second shutter plates are provided with a shutter main body that overlaps the right side or the reverse side of the cartridge casing to open and close the opening and a slide-member mounting portion for mounting the first and second slide portions to the shutter main body at an end. The slide-member mounting portion is provided with an engaging claw, wherein when mounting the first and second slide portions, the engaging claw is engaged with a claw engagement provided to the slide portion.

Abstract: A disk cartridge is provided. The disk cartridge includes a cartridge case including an upper shell having an inner circumferential wall and a lower shell having a first opening for recording and/or playback; an inner rotor rotatably disposed in the cartridge case and having a second opening corresponding to the first opening and an annular portion on the periphery thereof; and shutter members disposed between the inner rotor and the lower shell and rotatably attached to the inner rotor. The shutter members open the first and second openings when the inner rotor rotates so that the second opening agrees with the first opening. The inner circumferential wall of the upper shell is disposed inside the annular portion. The inner rotor has a groove opposite the leading end of the inner circumferential wall inside the annular portion. The groove has a width larger than the thickness of the leading end of the inner circumferential wall.

Abstract: An information recording medium cartridge is provided with a disc, a cartridge casing having the disc accommodated therein, first and second shutters movably mounted to the cartridge casing and for opening and closing recording and/or reproducing openings arranged in right and reverse sides thereof, and first and second slide members having the first and second shutters mounted thereto. First and second shutter plates are provided with a shutter main body which overlaps the right side or the reverse side of the cartridge casing to open and close the opening and a slide-member mounting portion for mounting the first and second slide portions to the shutter main body at an end. The slide-member mounting portion is provided with an engaging claw, wherein when mounting the first and second slide portions, the engaging claw is engaged with a claw engagement provided to the slide portion.

Abstract: A disc cartridge accommodating an optical disc in a cartridge body. The disc cartridge includes a cartridge body formed by mating and joining upper and lower halves mated together. A plurality of fusing portions for mating and fusing the upper and lower halves are provided at positions corresponding to recess portions for accommodating an optical disc. Each fusing portion is provided with a mating projection formed at one of the upper and lower halves and a mating projection formed at the other of the upper and lower halves. A plurality of mating projections formed at either half comprise mating projections having projections for fusing annularly and continuously formed over the entire circumference of the end surfaces to be mated to the mating projections of the other half and mating projections having projections for fusing formed in the form of an arc in one part of the end surfaces.

Abstract: An information recording medium cartridge is provided with a disc, a cartridge casing having the disc accommodated therein, first and second shutters movably mounted to the cartridge casing for opening and closing recording and/or reproducing openings arranged in right and reverse sides thereof. First and second slide members having the first and second shutters are mounted on the shutters. First and second shutter plates are provided with a shutter main body that overlaps the right side or the reverse side of the cartridge casing to open and close the opening and a slide-member mounting portion for mounting the first and second slide portions to the shutter main body at an end. The slide-member mounting portion is provided with an engaging claw, wherein when mounting the first and second slide portions, the engaging claw is engaged with a claw engagement provided to the slide portion.

Abstract: A disc cartridge accommodating an optical disc in a cartridge body. The disc cartridge includes a cartridge body formed by mating and joining upper and lower halves mated together. A plurality of fusing portions for mating and fusing the upper and lower halves are provided at positions corresponding to recess portions for accommodating an optical disc. Each fusing portion is provided with a mating projection formed at one of the upper and lower halves and a mating projection formed at the other of the upper and lower halves. A plurality of mating projections formed at either half comprise mating projections having projections for fusing annularly and continuously formed over the entire circumference of the end surfaces to be mated to the mating projections of the other half and mating projections having projections for fusing formed in the form of an arc in one part of the end surfaces.

Abstract: A disk cartridge in which a disk is loaded is formed with composite synthetic resin including at least two types of thermoplastic resin, an anti-static polymer, and an inorganic filler, heat-deforming temperatures of at least two types of the thermoplastic resin mutually differing. The disk cartridge is provided by a method comprising the steps of mixing at least two types of thermoplastic resin to provide a mixture, heat-deforming temperatures of at least two types of the thermoplastic resin mutually differing, mixing an inorganic filler with a mixture of at least two types of the thermoplastic resin, mixing an anti-static polymer with the mixture of at least two types of the thermoplastic resin including the inorganic filler to provide a composite synthetic resin, injection molding the composite synthetic resin to provide component parts of the disk cartridge, and assembling the component parts to form the disk cartridge with the disk loaded therein.

Abstract: An information recording medium cartridge with a disc, a cartridge casing having the disc accommodated therein, and a shutter slidably mounted to the cartridge casing. The shutter has a first shutter plate for opening and closing a recording and/or reproducing opening of the cartridge casing and a second shutter plate for opening and closing the recording and/or reproducing opening on another side. The first and second shutter plates are independently movable between first and second positions for closing and opening the recording and/or reproducing openings.

Abstract: A disc cartridge accommodating an optical disc in a cartridge body. This disc cartridge is provided with a cartridge body formed by mating and joining a pair of upper and lower halves formed at the circumferential edges with rising circumferential walls which are mated to each other to constitute the circumferential side walls and, at the same time, formed at facing inner surfaces with walls for forming the accommodating portion which are mated to each other to constitute the disc accommodating portion in which the optical disc is accommodated. This cartridge body is provided with openings for recording and reproduction and a shutter member for opening and closing these openings. On the two sides of the cartridge body on the lower half from the front side toward the middle toward the back side are provided recess portions for preventing erroneous loading. A plurality of fusing portions for mating and fusing the upper and lower halves are provided at positions corresponding to these recess portions.

Abstract: A disc cartridge accommodating an optical disc in a cartridge body. The disc cartridge includes a cartridge body formed by mating and joining upper and lower halves mated together. A plurality of fusing portions for mating and fusing the upper and lower halves are provided at positions corresponding to recess portions for accommodating an optical disc. Each fusing portion is provided with a mating projection formed at one of the upper and lower halves and a mating projection formed at the other of the upper and lower halves. A plurality of mating projections formed at either half comprise mating projections having projections for fusing annularly and continuously formed over the entire circumference of the end surfaces to be mated to the mating projections of the other half and mating projections having projections for fusing formed in the form of an arc in one part of the end surfaces.

Abstract: A disc cartridge accommodating an optical disc in a cartridge body. The disc cartridge includes a cartridge body formed by mating and joining upper and lower halves mated together. A plurality of fusing portions for mating and fusing the upper and lower halves are provided at positions corresponding to recess portions for accommodating an optical disc. Each fusing portion is provided with a mating projection formed at one of the upper and lower halves and a mating projection formed at the other of the upper and lower halves. A plurality of mating projections formed at either half comprise mating projections having projections for fusing annularly and continuously formed over the entire circumference of the end surfaces to be mated to the mating projections of the other half and mating projections having projections for fusing formed in the form of an arc in one part of the end surfaces.

Abstract: An information recording medium cartridge is provided with a disc, a cartridge casing having the disc accommodated therein, first and second shutters movably mounted to the cartridge casing and for opening and closing recording and/or reproducing openings arranged in right and reverse sides thereof, and first and second slide members having the first and second shutters mounted thereto.

Abstract: An information recording medium cartridge is provide with a disc, a cartridge casing having the disc accommodated therein, a shutter slidably mounted to the cartridge casing and for opening and closing recording and/or reproducing openings arranged in right and reverse sides of the cartridge casing, and a slide member for mounting the shutter to the cartridge casing.

Abstract: A container casing exchangeably holding an optical disc that can be loaded on a disc drive device as it holds an optical disc. The container casing includes a casing main member having a disc housing section for holding the disc-shaped recording medium towards its major surface, an aperture for recording and/or reproducing the disc-shaped recording medium held in the disc housing section and a center opening for rotationally driving the disc-shaped recording medium held in the disc housing section. The casing main member rotatably carries a cover member for opening/closing the disc housing section and an opening/closure controlling members. These opening/closure controlling members are moved between the first position engaging with the cover member and the second position disengaged from the cover member to control the opening/closure of the cover member to enable opening/closure of the cover member to enable exchange of the optical disc while assuring the positively closed state of the disc housing section.

Abstract: Disclosed is disc medium accommodating case for conveying a large number of disc media, in which the embedding structure for the column for stacking the disc media and the case bottom plate member is improved, whereby a sturdy case is provided which is free from deformation or breakage during handling, transportation, etc.

Abstract: A case for accommodating a disc cartridge includes a main body or cartridge accommodating part, a cartridge support arranged in the main body and including steps with increasing heights in due order, and partition plates arranged in the main body and corresponding to the steps of the cartridge support. Right and left sides of the disc cartridge inserted in the main body are held between side faces of the cartridge support and between the partition plates.

Abstract: An accommodating case adapted for accommodating a disc cartridge therewithin. This accommodating case includes a bottom plate on which the disc cartridge is mounted, and a pair of side walls provided in a manner opposite to each other on the both sides of the bottom plate, and comprises a case body in which at least the upper surface side and the front side are opened, and a cover body adapted so that the base end portion side is rotatably supported at the back side of the case body, and fitted between a pair of side walls to close the range or portion at least from the upper surface side toward the front side of the case body.