Abstract: A heat sink includes: a container having a cavity inside and a first surface and a second surface opposite the first surface; a working fluid encapsulated in the cavity; and a steam flow path in the cavity where the working fluid in a gas phase flows, the first surface having a flat part and a protruding part projecting from the flat part in an external direction, causing the container to have a flat portion and a protruding portion projecting from the flat portion in the external direction, an inner space of the protruding portion of the container being in communication with an inner space of the flat portion, causing the cavity to be formed, and a first heat radiating fin being provided on an exterior of the flat part of the first surface and a second heat radiating fin being provided on an exterior of the second surface.

Abstract: Provided is a semiconductor device, comprising: a semiconductor substrate having an upper surface, a lower surface, and a center position equidistant from the upper surface and the lower surface in a depth direction of the semiconductor substrate. An N-type region with an N-type conductivity is provided in the semiconductor substrate such that the N-type region includes the center position of the semiconductor substrate. The N-type region includes an acceptor with a concentration that is a lower concentration than a carrier concentration, and is 0.001 times or more of a carrier concentration at the center position of the semiconductor substrate.

Abstract: The present invention is an apparatus and method to remove delay fluctuations generated on a plurality of networks. A reception apparatus 22 receives ATM cells transmitted through a network 4-1 and a network 4-2, converting the cells into a transport stream. At that time, the reception apparatus 22 expresses a PCR packet's timing of arrival at the reception apparatus 22 by a count value obtained as a result of counting the number of clock pulses (clock pulses Nr) synchronous with a network clock signal of the network 4-2. The reception apparatus 22 also computes a new PCR value W on the basis of the count value and the phase-difference information used as synchronization information. The reception apparatus 22 then computes a new PCR value X on the basis of an original PCR value E recorded from the beginning on the encoding side and the PCR value W, newly recording the PCR value X.

Abstract: A pair of reels of a magnetic cassette tape and a pair of reel supports of a magnetic tape drive comprise a conductive material as an antistatic treatment. Further, a head substrate and a projection substrate of a head drum comprise a conductive material having a resistance of 1×1010 &OHgr; or less and are connected to a metal base so as to be at the ground potential via the metal base and a rotating drum. These antistatic treatments allow static electricity charged on a magnetic tape to be discharged to the head substrate and the protection substrate without flowing to a magneto-resistive (MR) element, thereby preventing the electrostatic discharge breakdown of the MR element.

Abstract: A head substrate and a projection substrate of a head drum comprise a conductive material having a resistance of 1×1010&OHgr; or less and are connected to a metal base so as to be at the ground potential via the metal base and a rotating drum. These antistatic treatments allow static electricity charged on a magnetic tape to be discharged to the head substrate and the protection substrate without flowing to a magneto-resistive (MR) element, thereby preventing the electrostatic discharge breakdown of the MR element.

Abstract: reception apparatus 22 receives ATM cells transmitted through a network 4-1 and a network 4-2, converting the cells into a transport stream. At that time, the reception apparatus 22 expresses a PCR packet's timing of arrival at the reception apparatus 22 by a count value obtained as a result of counting the number of clock (clock pulses Nr) synchronous with a network clock signal of the network 4-2. The reception apparatus 22 also computes a new PCR value W on the basis of the count value and the phase-difference information used as synchronization information. The reception apparatus 22 then computes a new PCR value X on the basis of an original PCR value E recorded from the beginning on the encoding side and the PCR value W, newly recording the PCR value X.

Abstract: A main cartridge body unit is to be reduced in size and thickness to reliably protect a disc-shaped recording medium. To this end, a disc cartridge includes a disc-shaped recording medium 5, a main cartridge body unit 6 including an upper plate 21 and a lower plate 22, both of a metal material, forming a plate pair, and an intermediate frame 23, sandwiched between the upper and lower plates 21, 22, and an upper liner sheet 101 and a lower liner sheet 110, forming a set of liner sheets, bonded to inner surfaces of the upper and lower plates 21, 22 for protecting the disc-shaped recording medium 5. The disc-shaped recording medium 5 is accommodated in the main cartridge body unit 6.

Abstract: A main cartridge body unit for housing a disc-shaped recording medium which can be reduced in size and thickness. To this end, the main cartridge body unit 6 includes a flexible magnetic disc 5, an upper plate 21 of a metal material and a lower plate 22 of a metal material, forming a plate pair, and an intermediate frame 23 sandwiched between the upper and lower plates 21, 22. A flexible magnetic disc 5 is housed in the inside of the main cartridge body unit 6. The main cartridge body unit 6 includes recording and/or reproducing apertures 24, 25 for exposing portions of the recording area of the flexible magnetic disc 5 to outside across the inner and outer rims of the disc. The main cartridge body unit 6 also includes a shutter member 61 for opening/closing the recording and/or reproducing apertures 24, 25.

Abstract: In a disc cartridge, a shutter slidably attached on a shell can be prevented from being projected from a front end surface of the shell by means of a spring force exerted by a spring. The shutter (5) includes first and second shutter plate portions (5a and 5b) overlapped on upper and lower surfaces (3a and 3b) of the shell (3) and a linkage plate portion (5c) overlapped on the front end surface (3c) of the shell (3). First and second slide guide projections (39 and 40) are installed on the second shutter plate portion (5b) and are inserted into first and second slide guide grooves (37 and 38) formed along the front end surface (3c) of the shell (3).

Abstract: A main cartridge body unit reduced in size and thickness. To this end, the main cartridge body unit includes a disc-shaped recording medium 5, a main cartridge body unit 6 including an upper plate 21 and a lower plate 22, both of a metal material, forming a plate pair, and an intermediate frame 23, recording and/or reproducing apertures 24, 25 formed in the main cartridge body unit 6 for exposing a portion of a recording area of the disc-shaped recording medium 5 to outside across the inner and outer rims of the disc-shaped recording medium, and a shutter member 61 provided for linear movement within the inside of the main cartridge body unit 6 for opening/closing the recording and/or reproducing aperture. The intermediate frame 23 is sandwiched between the upper and lower plates 21, 22. The disc-shaped recording medium is housed in the main cartridge body unit 6.

Abstract: An anti-static measure is taken against tape guide parts of a magnetic tape cassette by forming the tape guide parts of a conductive material and so on. An antistatic measure against a lid, an upper shell, a transparent window and a lower shell is taken by coating at least either of inside and outside of each of the lid, the upper shell, the transparent window and the lower shell with an anti-static film. A magnetic layer of a magnetic tape has a thickness of from 10 nm or more to 100 nm or less, and also contains oxygen in an amount of from 20 atm % or more to 30 atm % or less in a whole magnetic layer. An information recording surface of the magnetic tape has also a surface resistance of from 103&OHgr;/inch2 or more to 1012&OHgr;/inch2 or less.

Abstract: A pair of reels of a magnetic cassette tape and a pair of reel supports of a magnetic tape drive comprise a conductive material as an antistatic treatment. Further, a head substrate and a projection substrate of a head drum comprise a conductive material having a resistance of 1×1010 &OHgr; or less and are connected to a metal base so as to be at the ground potential via the metal base and a rotating drum. These antistatic treatments allow static electricity charged on a magnetic tape to be discharged to the head substrate and the protection substrate without flowing to a magneto-resistive (MR) element, thereby preventing the electrostatic discharge breakdown of the MR element.

Abstract: A disc cartridge for housing a magnetic disc of an increased recording capacity includes recording/reproducing apertures formed in the main cartridge body portion for exposing a portion of a signal recording area of the disc-shaped recording medium to outside across the inner and outer rims of the disc-shaped recording medium. The disc cartridge also includes a shutter member having shutter portions for opening/closing the recording/reproducing apertures and supporting portions provided on both sides of the direction of movement of the shutter portions and supported for movement by the main cartridge body portion and movement guide portions provided on both sides along the width-wise direction of the recording/reproducing apertures which is parallel to the movement direction of the shutter member. The supporting portions are engaged with the movement guide portion for movement.

Abstract: A disc cartridge mounted for movement on a main cartridge body unit housing a magnetic disc, in which the disc cartridge has a shutter member of a U-shaped cross-section for opening/closing a recording/reproducing aperture provided in the main cartridge body unit. The shutter member is provided with first and second guide pieces engaging in the movement guide groove provided in the main cartridge body unit. On a lateral side of the main cartridge body unit 4, there are formed first and second inclined guide portions for guiding in the movement guide groove the first and second pieces provided in the shutter member. One of the first and second guide pieces is of a height larger than the other guide piece so that, when the shutter member is mounted on the main cartridge body unit, the guide pieces are prevented from being abutted against the lateral side of the main cartridge body unit to suppress generation of chips from the main cartridge body unit.

Abstract: A center core for a disc-shaped recording medium. The center core comprises a flange section for supporting the disc-shaped recording medium. A generally cylindrical section having a bottom wall is formed integral with and located radially inward of the flange section. A plurality of supportable standard sections are formed at the bottom wall of the cylindrical section by making a press working on the bottom wall of the cylindrical section in a manner to project toward the lower surface side of the center core. The supportable standard sections define a supportable surface through which the center core is placed on a turn table of a disc drive device.

Abstract: A disc cartridge holding a flexible magnetic disc with a recording capacity exceeding 100 MB. The disc cartridge includes a main cartridge body portion holding a disc-shaped recording medium of an increased capacity, first and second positioning reference holes formed at left and right corners in the lower surface of the main cartridge body portion encircled by the front wall section in the direction of insertion of the main cartridge body portion into a disc drive device, left and right sidewall sections extending perpendicular to the front wall section and the outer rim of the disc-shaped recording medium housed in the main cartridge body portion.

Abstract: A disk cartridge comprising a center core at the central portion thereof with which it is chucked onto a rotary drive, a disk to be mounted onto the rotary drive and rotated at a rotation speed of at least 3,000 rpm, and a cartridge body for rotatably accommodating the disk. The cartridge body has a center opening in the central part of its lower surface through which the center core of the disk is exposed outside, a pair of recording/reproducing openings in opposing positions of the upper and lower surfaces of the cartridge body through which at least a part of the signal recording area of the disk is exposed outside in a radial direction, and a partition wall formed between the upper and lower surfaces of the cartridge body to enclose the almost entire outer periphery of the disk.

Abstract: A disc cartridge housing a magnetic disc includes an engagement projection formed in the vicinity of a corner of one of the upper and lower cartridge halves so that the distal end of the engagement projection is engaged with the other cartridge half, an insertion hole formed in the other cartridge half so as to be passed through by the engagement projection of the one of the upper and lower cartridge halves and an abutment protuberantly formed around the engagement projection for compressing against the rim portion of the insertion hole formed in the other cartridge half. The engagement projection protruded from the insertion hole has its distal end heated and swollen out by a non-vibration type heating system to form a retainer to unify the upper and lower cartridge halves to complete a main cartridge body portion.

Abstract: A cartridge holder is shown which comprises a back portion which has at an inner surface a plurality of cartridge gripping parts by which one sides of cartridges are gripped, a pair of lid portions which are pivotally connected to opposed sides of the back portion through respective major hinge portions; catching and caught portions which are provided at free ends of the lid portions and lock the lid portions when the lid portions are pivoted toward their closed position; and a plurality of extra hinge portions which are defined by the back portion. By roundly flexing the back portion at the major hinge portions, the cartridge gripping parts, that is, the cartridges gripped by these cartridge gripping parts are opened like a fan. Thus, upper ends of the cartridges are separated thereby facilitating handling of the upper ends of the cartridges by the fingers of a user.

Abstract: A disc cartridge includes a shell for storage of a recording medium taken in the form of a disc having a center core formed at the center thereof. The disc has signal recording portions formed around the center core on the opposite surfaces thereof. The shell has opposite inner surfaces facing to each other to define a disc receipt space containing the disc supported for rotation therein between the inner surfaces. The shell has a chucking hole through which the center core of the disc is exposed and read-write windows through which the respective signal recording portions are exposed. A shutter is mounted for sliding movement on the shell to open and close the read-write windows. A pair of slippery films are formed on the respective inner surfaces.