Abstract: Provided is a disk carrying mechanism, in which a guide member (32) is installed on a disk guide block (41) and the disk guide block (41) with the guide member (32) being disposed on an opposite side of a roller (31) with a carrying route therebetween. The guide member (32) is formed as a ridge extending in a direction orthogonal to a direction of a carrying route and inclined from a center part to a peripheral edge part of a disk so that its height can be increased.

Abstract: A main frame supports a receiving-side connector to which a connecting-side connector is connected in movable manner toward inside. A holding unit holds the receiving-side connector that is moved to the inside. A connector biasing unit applies a biasing force toward outside to the receiving-side connector. A hold releasing unit releases a hold by the holding unit, and moves the receiving-side connector to the outside by the biasing force. A pressing-force applying unit applies, when the receiving-side connector is not moved by the biasing force, a pressing force for ejecting the receiving-side connector to the receiving-side connector.

Abstract: Provided is a disk carrying mechanism, in which a guide member (32) is installed on a disk guide block (41) and the disk guide block (41) with the guide member (32) being disposed on an opposite side of a roller (31) with a carrying route therebetween. The guide member (32) is formed as a ridge extending in a direction orthogonal to a direction of a carrying route and inclined from a center part to a peripheral edge part of a disk so that its height can be increased.

Abstract: The present invention is to provide a sample separation instrument used in a sample separation apparatus which includes: holding means for holding a first medium supporter which supports a first medium; and driving means for moving fixing means or the holding means in a direction parallel or perpendicular to a plane whose sides extend in the first direction and in the second directions. The sample separation instrument includes an insulator for storing a second medium which allows a sample separated in the first medium in the first direction to be further separated in the second direction different from the first direction, wherein: the insulator includes a first opening and a second opening each of which defines the second direction in which the second medium is electrified, and the second opening has a shape which allows the first medium containing the separated sample to be attached to the second medium along the first direction.

Abstract: A disc transfer section for transferring an optical disc by guide members and a transfer roller is disposed adjacent to an opening of a casing 110. A detector 500 for detecting the optical disc is disposed adjacent to the opening. When unloading the optical disc, the peripheral edge of the optical disc contacts with slide members so that the slide members are slid, thereby sensor switches SW1 to SW4 are appropriately switched on and off. Based on a time difference between the timings of the on/off switchings, the relation between a movement trajectory of the center of the optical disc and an axis of symmetry that is a straight line indicating a transfer direction at the center of the opening is judged in order to control the drive of a transfer motor according to the movement trajectory. The amount of advancement when the unloading is completed is kept constant.

Abstract: A stepping motor driving system includes: a stepping motor that rotates at a predetermined angle according to a driving pulse signal, a vibration detector that detects vibration to output a vibration signal, and a stepping motor control unit that controls the driving pulse signal, which is applied to the stepping motor, to rotate the stepping motor at the predetermined angle. The driving pulse signal includes a start-up current which is required for rotating the stepping motor at a unit angle and a holding current which maintains a rotational angle of the stepping motor rotated by the start-up current. The stepping motor control unit changes the level of the holding current according to the vibration signal which is outputted from the vibration detector.

Abstract: It is an object of the present invention to provide an improved disc changer adapted to exactly detect whether a magazine storing a plurality of discs has been attached in the disc changer. When a magazine storing a plurality of discs is inserted into the disc changer, a detection arm and a lock arm both serving as moving members are moved by such an insertion. The lock arm, by virtue of the movement of itself, engages into an insertion groove provided on the backside of the inserted magazine and locks the magazine on the disc changer. The detection arm, by virtue of the movement of itself, actuates a lock detection switch. Here, since the detection arm and the lock arm are both urged by an urging spring, it becomes possible to exactly detect the attachment of the magazine by allowing the moving members locking the magazine on the disc changer to actuate the lock detection switch.

Abstract: An urging structure for an output shaft of a drive motor of the invention is configured by a pressing plate 31 which abuts against an end face 24a of an output shaft 24, and an urging spring 36 which urges the pressing plate in the axial direction of the output shaft 24. In the pressing plate 31, a fixing portion 32 in one end is fixed onto a chassis 21 in the vicinity of the output shaft 24, and an abutting portion 34 is disposed on the tip end of a flexible arm portion 33. A spring holding portion 35 with which an end portion of the urging spring 36 that is fixed to a spring boss 37 is to be engaged is disposed on the rear face of the abutting portion 34.

Abstract: An optical pickup 200 is arranged between optical discs 10A and 10B rotatably supported with the recording surfaces 10Aa and 10Ba facing each other, the optical pickup being movable along the recording surfaces 10Aa and 10Ba. A laser beam of two wavelengths emitted from a semiconductor laser 201 is respectively reflected in opposite directions by a polarized beam splitter. The reflected laser beams are respectively condensed on the recording surfaces 10Aa and 10Ba via objective lenses, and the laser beam traveling back along the same optical axis is received and processed. No moving member is required, which enables downsizing.

Abstract: A motor includes: a stator provided with a plurality of coils, a rotor provided rotatably with respect to the stator, a first magnet which is mounted on the rotor and which faces one end of each of the plurality of coils, and a second magnet which is mounted on the rotor and which faces the other end of each of the plurality of coils.

Abstract: A record medium reproduction unit has a main casing, a transfer device, a pair of sensing pins, a sensing device, and a decision device. The transfer device transfers a larger disk record medium and a smaller disk record medium into and out of the main casing. The sensing pins are movable toward and away from each other and each contact an outer edge of the larger disk record medium when the larger disk record medium enters the main casing. The decision device determines which is inserted into the main casing, the larger disk record medium, the smaller disk record medium, or a special form record medium such as a card-shaped CD based on information supplied from the pair of sensing pins.

Abstract: A stepping motor driving system includes: a stepping motor that rotates at a predetermined angle according to a driving pulse signal, a vibration detector that detects vibration to output a vibration signal, and a stepping motor control unit that controls the driving pulse signal, which is applied to the stepping motor, to rotate the stepping motor at the predetermined angle. The driving pulse signal includes a start-up current which is required for rotating the stepping motor at a unit angle and a holding current which maintains a rotational angle of the stepping motor rotated by the start-up current. The stepping motor control unit changes the level of the holding current according to the vibration signal which is outputted from the vibration detector.

Abstract: A playback mechanism of a recording medium is provided, by which a period of time required until information recorded in the recording medium is read out after the recording medium is inserted in an instrument body can be shortened and the size of the playback mechanism can be reduced. The mechanism includes an instrument body, conveying unit having a roller arm and disc guide, clamp playback unit having a locking pin, and locking member. The clamp playback unit is movable relatively to the instrument body. The locking member locks the locking pin to fix the clamp playback unit. The locking member releases the locking of the locking pin to make the clamp playback unit movable relatively to the instrument body. When the clamp playback unit clamps a CD, the roller arm and disc guide part from the CD, thereby the locking by the locking member is gradually released.

Abstract: It is an object of the present invention to provide an improved disc changer allowing correct attachment of a magazine into a magazine holder. In the disc changer of the invention, a plurality of restriction members are provided in the magazine holder which receives a magazine for arranging and storing a plurality of discs, located on the magazine holder's one surface facing the upper surface of the magazine received therein. Therefore, these restriction members can get into contact with the upper surface of the magazine being inserted into the magazine holder in an upwardly inclined state, thereby restricting the insertion direction of the magazine. In this way, the magazine with its insertion direction being restricted, can be attached into the magazine holder in a correct manner, without bringing about any undesired effect caused by both the drawing means and the disc storing position within the magazine on the positioning or the like in the disc arranging direction.

Abstract: It is an object of the present invention to provide an improved disc changer adapted to exactly detect whether a magazine storing a plurality of discs has been attached in the disc changer. When a magazine storing a plurality of discs is inserted into the disc changer, a detection arm and a lock arm both serving as moving members are moved by such an insertion. The lock arm, by virtue of the movement of itself, engages into an insertion groove provided on the backside of the inserted magazine and locks the magazine on the disc changer. The detection arm, by virtue of the movement of itself, actuates a lock detection switch. Here, since the detection arm and the lock arm are both urged by an urging spring, it becomes possible to exactly detect the attachment of the magazine by allowing the moving members locking the magazine on the disc changer to actuate the lock detection switch.

Abstract: An urging structure for an output shaft of a drive motor of the invention is configured by a pressing plate 31 which abuts against an end face 24a of an output shaft 24, and an urging spring 36 which urges the pressing plate in the axial direction of the output shaft 24. In the pressing plate 31, a fixing portion 32 in one end is fixed onto a chassis 21 in the vicinity of the output shaft 24, and an abutting portion 34 is disposed on the tip end of a flexible arm portion 33. A spring holding portion 35 with which an end portion of the urging spring 36 that is fixed to a spring boss 37 is to be engaged is disposed on the rear face of the abutting portion 34.

Abstract: A playback mechanism of a recording medium is provided, by which a period of time required until information recorded in the recording medium is read out after the recording medium is inserted in an instrument body can be shortened and the size of the playback mechanism can be reduced. The mechanism includes an instrument body, conveying unit having a roller arm and disc guide, clamp playback unit having a locking pin, and locking member. The clamp playback unit is movable relatively to the instrument body. The locking member locks the locking pin to fix the clamp playback unit. The locking member releases the locking of the locking pin to make the clamp playback unit movable relatively to the instrument body. When the clamp playback unit clamps a CD, the roller arm and disc guide part from the CD, thereby the locking by the locking member is gradually released.

Abstract: A positional displacement compensating mechanism and a recording medium playback device which can compensate a positional displacement between two members to be movable freely mutually are provided. A recording medium playback device has a clamping playback unit 5. The clamping playback unit 5 has a carriage chassis 45, a clamping arm 46, a positioning member 61, a CD sensing member 62 and a torsion spring 63. The carriage chassis 45 and the clamping arm 46 can move freely close or apart mutually. The positioning member 61 is located between the carriage chassis 45 and the clamping arm 46. The CD sensing member 62 is supported to move one end 62a rotatably by the clamping arm 46. The other end 62b of the CD sensing member 62 is engaged with the positioning member 61. The CD sensing member 62 has a supporting portion 69.

Abstract: A combination gear having a gear slipping-off preventing structure with an easier combining operation is provided, which includes: a first gear having a shaft hole; a second gear, having a shaft hole, to coaxially couple with the first gear so as to constitute the combination gear; and a shaft to be inserted into the shaft holes of the respective first and second gears, wherein either one of the first and second gears is provided with a coupling male-portion having a securing projection and the other of the first and second gears is provided with a coupling female-portion having a securing recess so that the first and second gears combine together by coupling the coupling male-portion with the coupling female-portion with an engagement between the securing projection and the securing recess. And, a relief portion to permit a relief of an end portion of the securing projection on coupling the coupling male-portion with the coupling female-portion is also provided inside the securing recess.

Abstract: A feeding screw is rotatably mounted on a chassis of a recording medium reproducing device. A half nut having a semicircular sectional shape is mounted on an optical pickup carriage. The half nut has at least one thread which comprises a thick central portion to be engaged with the feeding screw and thin both side portions not to be engaged with the feeding screw. The optical pickup carriage is fed by a rotation of the feeding screw, being engaged with the half nut.