Tdk Corporation

Kabushiki Kaisha Toshiba

Tdk Electronics Ag

Masaru Ikebe

Haruo Shiba

Yukio Miyazaki

Morimasa Sasaki

Masatoshi Okamura

Kenji Hashizume

Takateru Satoh

Kimio Tanaka

Motohiko Shima

Toshihiko Ishida

Akio Momoi

Hiroshi Kaneda

Katsumi Suzuki

Kouichi Suzuki

Kunihiro Ueda

James Yurchenco

Hiroki Suzuki

Noboru Uemura

Robert Stancel

Takashi Koshiyouji

Blaise Bertrand

Kenkichi Akaoka

Hisao Katoh

Shinichi Satoh

Mitsuo Watanabe

Hideshisa Hashimoto

Satoru Kurokawa

Kimitoshi Itou

Peter Reinhardt

A clamping plate capable of reliably clamping a disk-shaped medium. In the clamping plate, at an imaginary intersecting portion between an imaginary extended surface of a rear surface of an outer peripheral portion of a main body and an imaginary extended surface of a rear surface of an inner peripheral wall of the main body, an annular groove recessed from the imaginary extended surfaces in the directions of the thicknesses of the outer peripheral portion and the inner peripheral wall is formed along an imaginary cross line of the imaginary extended surfaces.

Clamping plate, cartridge case, information medium, mold, and method of manufacturing clamping plate

A disc cartridge includes a cartridge main body composed of a lower shell, in which a first opening that enables disc access for a disc-like recording medium in a housed state is formed, and an upper shell, a disc tray that is rotatably provided inside the cartridge main body and formed so that the recording medium can be mounted thereon, and a single shutter member disposed between the lower shell and the disc tray. A second opening, which enables disc access for the recording medium when the second opening overlaps the first opening in a thickness direction of the disc cartridge, is formed in the disc tray. The disc tray closes part of the first opening in a restricted state where the disc access is restricted, and is capable of opening the part of the first opening in a disc access state by being rotated inside the cartridge main body and causing the shutter member to slide. The shutter member closes another part of the first opening in the restricted state so as to close the first opening in concert with the disc tray, and in the disc access state the shutter member is caused to slide by the disc tray so as to be capable of opening the other part of the first opening.

Disc cartridge

In a disc cartridge for an optical disc and the like, to increase stiffness in an opening for a record and reproduction mechanism. A disc cartridgehas an upper shell, a center frame, and a lower shellclamped to one another. A center frame openingand a lower shell openingexpose a recording surface of a recording medium contained between the center frameand the upper shelldownwardly, and a reinforcing memberintegrally couples the ends of the center frame openingand a lower shell reinforcing memberintegrally couples the ends of the lower shell opening

The disk storage case is composed of a circular setting portion for setting the disk-like member such as a compact disk thereon, a disk holding portion for holding the disk-like member vertically and annularly arranged at a center of a setting face of the setting portion, and a through hole provided at inner side of the annular holding portion. The disk storage case has a simple structure and a lightweight. A plurality of disk storage cases storing the compact disks and others can compactly be stacked and packaged, and by insertion of the cylindrical rod into the through hole and by packing with film, it may easily be packaged without tilting, and the package of a plurality of the disk storage cases can be produced simply and effectively.

Stackable compact disk case

A cartridge accommodates a recording medium etc, and includes an opening and a shutter for opening and closing the opening. The shutter surface is formed with a hole with which an external drive member engages for driving the shutter. An inner side peripheral surface of the hole, upon which at least the drive member impinges when opening and closing the opening, is constructed of a bending portion continuous from the shutter surface. The bending portion can be worked as a continuous surface by punching out a prepared hole so as to leave a portion corresponding to the bending portion and thereafter bending it. A resinous protection layer having a thickness more than 12 &mgr;m is provided on the shutter surface upon which the drive member impinges when engaging with the hole.

Cartridge and manufacturing method thereof

A disk cartridge has a casing composed of upper and lower casings which are adapted to rotatably receive therein a disk-like medium a shutter attached to the casing so as to open and shut openings for driving shaft insertion holes and magnetic head insertion holes formed in the upper and lower casings a disk-like medium taking-out port formed in the casing and a cover member for opening and closing the disk-like medium taking-out port wherein the cover member is disposed in the casing at a position opposing the shutter a disk-like medium placing portion is provided by forming tongue-like projections in the cover member to support the disk-like member from its lower surface side; the cover member is so arranged as to slide between the upper and lower casings whereby the disk-like member can be taken out by simply drawing the cover member from the disk-like medium taking-out port or the disk-like medium can be placed by simply inserting it, and operability in exchanging the disk-like medium can be done extremely well. The lower casing is so constructed that a recessed face portion for receiving the tongue-like projections formed in the cover member is formed in an inner face which opposes the disk-like medium whereby the strength of the casing can be well maintained; easy taking-out and insertion of the disk-like medium are permissible, and good operability of exchanging the disk-like medium is obtainable.

Disk cartridge

A disc cartridge capable of enhancing operability of both a cover and an erasure preventing plug while ensuring smooth removal of a disc shaped medium therefrom. An upper casing member and a lower casing member are formed with cutouts, respectively, and the cover is provided with projections fitted in the cutouts of the upper casing member and lower casing member, respectively. The cutouts of the upper casing member and lower casing member and the projections of the cover cooperate with each other to provide an operation hole for the erasure preventing plug and a detection hole therefor, respectively.

A disk storage case comprising a main body and a cover body. The main body stores a disk-shaped medium therein and includes a bottom wall having a plurality of hold projections, side walls including extension portions extended therefrom, a front surface wall, and a back surface wall. The cover body includes a top wall, a pair of mutually opposing side walls, and a back surface wall, and the end portions of the pair of side walls of the cover body on the back surface wall side thereof is capable of being pivotally mounted on the extension portions to thereby mount the cover body on the main body in such a manner that the cover body can be opened and closed. The height of the back surface wall of the cover body is set substantially equal to the thickness of the disk storage case when the cover body is closed.

Disk storage case

A tape cartridge includes a pair of hubs and a casing. The respective hubs include respective drums for winding a tape-shaped medium thereon and respective cylinders with respective driving shaft insertion bores for accepting respective driving shafts of a recording/reproducing device. The hubs are rotatably supported in the a casing having upper and lower halves. The casing has driving shaft insertion holes formed therein so as to accept the respective driving shafts. The cartridge includes a slider for slidably covering the respective driving shaft insertion holes and a hub brake engageable with the respective hubs. The respective hubs have teeth provided on respective upper portions thereof so as to be engageable with the hub brake. Recesses are formed between the respective drums and the respective inner cylinders so as to have respective upper ends thereof opened. The respective drums have respective outer peripheral surfaces between adjoining teeth conformed to inner peripheral surfaces of the respective recesses. The respective teeth have a portion extending into the respective recesses.

Tape cartridge

A disc cartridge of a three-piece structure capable of being kept from being caught in an information recording/reproducing apparatus during loading/unloading thereof with respect to the apparatus. The disc cartridge includes an upper plate, a lower plate, and a center frame arranged between the upper plate and the lower plate, which are joined to each other to form a casing in which a disc-like medium is received. The upper plate defines the whole upper surface region of the disc cartridge, whereas the lower plate defines the whole lower surface region of the disc cartridge. The disc cartridge also includes an engaged structure in which an engagement structure of the information recording/reproducing apparatus is engagedly fitted. The engaged structure is constituted by only the lower plate.

Disc cartridge having reference holes

A disc cartridge capable of ensuring smooth sliding of a shutter on a casing while keeping a connection plate of the shutter from being abutted against or in contact with the casing, leading to a safe and increased-in-reliability sliding operation of the shutter. A lower plate of the shutter is provided with a holding pawl and a lower casing member is formed on an outer surface thereof with a slide groove, in which the holding pawl is slidably fitted. A side surface of the lower casing member on which the connection plate of the shutter is slid is outwardly projected beyond a side surface of an upper casing member on which the connection plate is likewise slid. Alternatively, the shutter is so formed that a bending angle between the lower plate and the connection plate is larger than that between an upper plate and the connection plate.

Disc cartridge and shutter

A disk storage case comprising a main body and a cover body. The main body is for storing a disk-shaped medium therein and includes a bottom wall. The cover body is mounted on the main body in such a manner that it can be freely opened and closed. The bottom wall of the main body includes hold projections and guide projections. The hold projections are integrally formed in the center portion of the bottom wall of the main body so as to be engageable with a center hole formed in the disk-shaped medium to thereby be able to hold the disk-shaped medium. The hold projections are arranged in an annular manner. The guide projections are respectively provided between the hold projections. Further, the guide projections are integrally formed in the bottom wall of the main body and higher than the hold projections. A slit is formed and surrounding a part of a root portion of each hold projection to thereby allow the hold projection to be deformed elastically.

Disk storage case and disk tray

A cartridge comprises a case consisting of upper and lower shells joined and containing a medium, a shutter which slides astride over one edge portion of the case to open or close a slot formed in the case to expose the medium partly, and a locking member which keeps the shutter in the closing position immovably. The locking member is normally, except when unlocked, exposed partly in a recess for the access of an unlocking member, so that a push of the exposed portion of the locking member disengages it from a projection formed on the inner side of the outer edge of the shutter. Confining structure is provided for confining the position of the exposed portion of the locking member always to the inside of the line extended from the end face of the shutter is provided between the exposed portion and the interior surface of the case.

Disk Cartridge

A disc cartridge capable of improving an appearance of a casing and quality thereof and a molding die capable of providing such an improved disc cartridge. A casing is provided at a peripheral portion thereof other than a disc receiving section opposite to a disc-like medium with a two-layer section constructed of a non-transparent resin layer and a transparent resin layer laminated on each other in a direction of thickness of the casing. A molding die including a fixed part and a movable part is so constructed that a slide mold for molding a transparent resin section and the transparent resin layer of the two-layer section is arranged in the fixed part.

Disc cartridge integrally formed of transparent and non-transparent resin, and molding die therefor

A disk cartridge is constituted by a case for holding a disklike medium therein, a slidable shutter, and a coil spring. The case has an upper case and a lower case coupled together. The upper case and the lower case is provided with a hole for inserting a record-playback head and a hole for inserting a driving shaft. The slidable shutter is substantially U-shaped in cross section, and exposes and blocks up the openings. The shutter is formed of a left-side shutter and a right-side shutter. The coil spring is stretched between retaining portions provided to the sliders of the respective left- and right-side shutters in order to urge the left- and right-side shutters in the direction of bringing both shutters close to each other. The left- and right-side shutters are abutted each other to block up the opening by the urging force of the coil spring. The left- and right-side shutters are slid in the direction of parting both shutters from each other against the tensile strength of the coil spring in order to expose the openings.

Growing community of inventors

Saku, Japan

Masaru Ikebe