Abstract: A case consisting of a cover and a case body adapted to mate to form a space for holding a given object has an outside and/or inside layer made wholly or partly of a thermoplastic elastomeric resin. The outside layer is formed of a thermoplastic elastomeric material selected from the group consisting of styrenic, olefinic, esteric, urethanic, polybutadienic, and vinyl chloride type thermoplastic elastomeric materials, and the inside layer is formed of a plastic material selected from the group consisting of polymethyl methacrylate, acrylonitrile-styrene copolymer, polycarbonate, acrylonitrile-butadiene-styrene, polystyrene, polybutylene terephthalate, high-impact polystyrene and the like, or vice versa.

Abstract: A cleaning cassette capable of accomplishing a safe and positive cleaning operation while ensuring smooth and stable running of a cleaning tape. The cleaning cassette includes a tape passing mechanism arranged at a front portion of a casing for ensuring satisfactory traveling of the cleaning tape while reducing contact between the cleaning tape and a head cylinder of a cassette tape deck. The mechanism includes a pair of rollers through which the cleaning tape is passed, a support member for supporting each of the rollers at each of its respective ends such that each roller can rotate and a pair of partitions provided between insertion recesses of the casing.

Abstract: A disc cartridge capable of ensuring its stable and positive operation without damaging a disc while satisfactorily producing a cleaning effect and maintaining adequate contact between the head of a cartridge operating unit and the disc. Each of a pair elastic members respectively mounted on the upper and lower inner surfaces of a casing forcibly presses a sheet-like liner situated between the elastic member and a disc against the disc through a projection portion having a predetermined length formed as part of the elastic member, resulting in the liner contacting the disc with a force at substantially a constant level for a long period of time.

Abstract: A tape cassette including an upper and a lower half housing sections each of which is comprised of an inner housing layer and an outer housing layer formed integrally on the outer surface of the inner layer, the upper and lower half housing sections containing a tape and reels on which the tape is wound or unwound inside the inner housing layers and having guide members located close to the front end of the housing to guide the tape, characterized in that said outer housing layers are molded from a thermoplastic elastomeric material to impart anti-shock or vibration property.

Abstract: A tape cassette capable of ensuring firm joining between different resin layers of a casing and exhibiting a good aesthetic property. The tape cassette includes a casing consisting of upper casing member and lower casing member which are integrally made into a two-layer structure of a primary resin layer and a secondary resin layer integrally formed by two-layer molding. The secondary resin layer is formed with a plurality of penetrations and the primary resin layer is joined to the secondary resin layer in a manner to be fitted in the penetrations, resulting in being integral with the secondary resin layer.

Abstract: Guide members along and with which a magnetic tape runs in sliding contact within a magnetic tape cassette housing are made of a liquid crystal polymer of a totally aromatic polyester filled with a lubricant. The lubricant is carbon fiber, graphite, or molybdenum disulfide.

Abstract: A magnetic tape cassette comprises upper and lower half members for housing hubs with a magnetic tape wound therearound, provided with guide rollers and tape guides for guiding said magnetic tape in the front portion of the tape cassette, and a separate rear member including a portion for preventing erasure by mistake and a portion for detecting the kind of a tape. Provided at the rear edges of said upper and lower half members, and said rear member is coupled to the rear edges of said upper and lower half members by coupling means.

Abstract: A tape cassette has a case with upper and lower halves and an open space at the front thereof. A magnetic tape housed in the case is wound around a pair of reels. A brake is slidably mounted on the inner surface of the lower half of the case to prevent the reels from being rotated. Part of a spring is attached to the brake. The spring has free ends and urges the brake in a direction. A device for positioning the spring includes a partition wall on the inner surface of the lower half of the case which partitions the open case from the inside of the case. An independent abutment member on the partition wall abuts the free ends of the spring.

Abstract: A magnetic tape cassette includes a protective cover pivotally mounted to the front side of a housing wherein the upper and lower front edge corner portions of an elongated main portion of the protective cover is formed with smooth surfaces to prevent the cover from inadvertently pivoting or opening during handling to expose the magnetic tape to contaminants.

Abstract: A disc cartridge capable of preventing a recording surface section of a disc from being contacted with an inner surface of a casing so that the disc may be free from any damage. The disc cartridge includes steps or sheet-like members provided on the inner surface of the casing in a manner to be inwardly projected from the inner surface. The steps or sheet-like members are positioned so as to be engaged with a non-recording surface section of the disc to support the disc thereon, so that a clearance may be defined between the recording surface section of the disc and the inner surface of the casing.

Abstract: A disc cartridge and a casing therefore capable of carrying out insertion and removal of a disc with respect to the casing without separating a shutter from the disc cartridge and adversely affecting the disc, with simple operation. The casing includes a casing body constituted by an upper cover member and a lower cover member joined together to form an inner space therein which is adapted to rotatably receive therein a disc having a non-recording section formed at its outer periphery and be separable at rear ends thereof from each other. The casing also includes a pair of guides arranged on both side of a rear portion of an interior of the casing body so as to be opposite to each other. The guides permit insertion and removal of the disc with respect to the casing body to be safely accomplished along the guides through the opened rear end of the casing. The disc cartridge uses such a casing.

Abstract: A casing for a magnetic tape cassette capable of constantly actuating a slider with high reliability for a long period of time, even under conditions of high temperature. The casing includes a casing body having an upper casing member and a lower casing member joined together, and a tapping boss of high rigidity arranged therein, with a slider being slidably mounted on the lower casing member so as to cover at least a part of a bottom and sides of the lower casing member. The casing also includes a torsion spring arranged in the casing body to act on the slider, the torsion spring having a coil-like portion supported on a supporting member mounted on the lower casing member, and an end of the torsopm spring engaged with the slider. The other end of the torsion spring is securely held in an engagement portion formed at the tapping boss.

Abstract: A disc cartridge capable of holding a disc in a casing in a state of floating in a space in the casting to keep it in noncontact with the casing when the disc cartridge is not used. The disc cartridge includes an actuator arranged in a casing receiving a disc therein to releasable lock a shutter for a window and a disc receiver arranged in the casing and operatively connected to the actuator to selectively receive therein a part of a peripheral portion of the disc. The actuator is arranged to be slidable in a longitudinal direction of the disc cartridge to cause the disc receiver to be approachably moved with respect to the disc, so that the disc receiver may be engaged with the disc to rearwardly force the disc while keeping the disc in noncontact with the casing when the shutter is actuated to close the window and disengaged from the disc when the shutter is actuated to open the window.

Abstract: A disc cartridge capable of preventing a recording surface section of a disc from being contacted by a casing and placing the disc at a proper position in the casing without damaging and polluting, to thereby ensure the safe and smooth operation of the disc in the casing. The disc cartridge includes a pair of disc receivers each of which is formed therein with a recess for receiving a peripheral portion of the disc. The recess has an end surface contacting an outer periphery of the disc, which is formed into a substantially sideways V-shape of which an apex is positioned at substantially a center of the end surface to position the outer periphery of the disc at the center of the end surface.

Abstract: A disc cartridge capable of preventing a recording surface section of a disc from being contacted directly by a casing to keep the disc housed in the casing at a safe state. The disc cartridge includes a pair of disc receivers each of which has a receiver body arranged so as to be approachable to the disc and formed into a sideways U-shape so as to define therein a recess for selectively receiving therein a part of a peripheral portion of the disc.

Abstract: A disc cartridge capable of effectively preventing a shutter from being opened even when any unexpected shock is suddenly applied to the disc cartridge during non-use of the disc cartridge. The disc cartridge includes a connection mechanism for operatively connecting to disc receivers, actuators for releasably locking the shutter. The connection mechanism is constituted by a guide groove provided in the actuator and formed into a substantially sideways U-shape, and a guide pin provided on the disc receiver and movably fitter within the guide groove. The guide pin is spaced from two surfaces of the guide groove opposite to the guide pin, in the actuating direction of the actuator. Also, the disc cartridge includes a substantially V-shaped spring for constantly positioning the guide pin within the guide groove and forcing the disc receiver to return to its original position to keep the guide pin apart from the opposite surfaces of the guide groove.

Abstract: A disc cartridge capable of providing a casing with torsional rigidity sufficient to ensure safety of a disc and smooth operation of a shutter. In the disc cartridge, an upper cover plate and a lower cover plate constituting a casing are formed at each of peripheral end walls thereof with projections and recesses engaged with one another, so that the cover plates may be joined together through the projections and recesses to form the casing which exhibits torsional rigidity sufficient to prevent deformation of the casing.

Abstract: A disc cartridge capable of readily accomplishing centering of a disc. The disc cartridge includes a casing which has a front end through which the disc cartridge is inserted into a disc player and a rear end which is opposite to the front end. At least the rear end is provided on an inner end surface thereof with an elastic means which acts to force the disc toward the front end to correctly position the disc in the casing when the disc cartridge is charged in a disc player.

Abstract: A disc cartridge capable for ensuring smooth movement of a disc receiver for a long period of time with high reliability. The disc cartridge includes a pivot pin on which a disc receiver is supported so as to be pivotally movable about the pivot pin and which is mounted on a lower inner surface of a casing to inwardly project therefrom. The pivot pin cooperates with a bearing mounted on an upper inner surface of the casing to constantly form a gap in a thickness direction of the casing in the casing which has a distance sufficient to ensure smooth pivotal movement of the disc receiver about the pivot pin in the casing.