Abstract: A disc drive (digital book data playback apparatus) includes a cabinet, a disc insertion part through which a digital book data disc is inserted into the cabinet, the disc insertion part being provided in a surface of the cabinet, and a guide groove formed in a surface of the cabinet, the guide groove having a starting end portion formed at an opening end and a terminating end portion continued to the disc insertion part, the guide groove being capable of receiving an outer peripheral edge of the digital book data disc to be inserted into the disc insertion part until the outer peripheral edge reaches a necessary depth.

Abstract: Provided is a disc loading device and optical disc drive using the same. The disc loading device includes a loading roller for loading a disc in a main frame, an eject lever for discharging the disc out of the main frame, and a main slider operating the eject lever, and moving in a direction by a disc emergency ejection pin inserted from outside of the main frame.

Abstract: There is provided a disk device that prevents entering of foreign matters, and that forms an opening/closing lid using an inclined surface of a front wall so that the disk device has a design according to which the thickness is not noticeable. A front wall 1a of an outer case 1 includes an inclined surface whose front part is inclined downward. An opening portion 1b is provided to the front wall 1a of the outer case 1, and a lid 2 that covers the opening portion 1b while allowing it to be opened or closed is provided. The lid 2 is configured to move, by rotating about a rotation shaft provided in a direction crossing a disk conveyance direction, between a closed lid position 2A in which the lid is flush with the inclined surface such that a disk insertion opening 1c is not exposed to the outside and an open lid position 2B in which the disk insertion opening 1c is exposed to the outside and a disk 200 is guided to the disk insertion opening 1c.

Abstract: A compact disc centering apparatus of a compact disc player includes carrying rollers which are disposed within a compact disc entry on the opposite sides thereof and a compact disc guiding; a pair of detection rods capable of synchronized rotating, which is disposed between a support plate and the compact disc entry. The apparatus also includes a control device and a trigger device, wherein, an engaging portion is disposed on the control device and extends along the direction in which the control device moves, and an engaged portion is disposed on the trigger device and engages with the engaging portion. When the engaged portion is located in the engaging portion, the contact between the engaging portion and the engaged portion makes the trigger device rotate and stop at a position such that the center of the compact disc is coincident with the center of the support plate.

Abstract: A disk loading apparatus includes a disk selecting unit rotatable through a rotating angle which corresponds to a size of an inserted disk, a pair of guide arms that are spaced from the disk selecting unit and are rotated by the disk, a small diameter loading lever that is rotated by one of the guide arms, a large diameter loading lever that is moved by the guide arms, a slide cam unit that is moved by the small diameter loading lever or the large diameter loading lever, and a chuck unit which is disposed between the guide arms and the disk selecting unit and is operated by the slide cam unit to chuck the disk. The small diameter loading lever and the large diameter loading lever are disposed at a same height above the guide arms.

Abstract: There is provided a disk device having a buffer portion capable of relatively moving at least a rack at the beginning of meshing with a drive gear in an opposite direction to a moving direction of a slide cam member moved by conveyance of a disk, when the disk is conveyed to a replayable position by a disk conveyance mechanism and the slide cam member moves so that the drive gear and the rack are meshed with each other.

Abstract: A disc transfer guide apparatus includes a guide plate for transferring a disc by clamping the disc in cooperation with a feed roller and a mount base to which the guide plate is mounted. The guide plate has a pair of plate portions coupled by a coupling portion that can be expandable and shrinkable in an axial direction of the feed roller. Each plate portion has a protruding piece at the outer end and the mount base has a slit engaged with the protruding piece for restraining the guide plate from moving in the axial direction of the feed roller. Each plate portion has inclined protruding threads having a protruding amount from the obverse face gradually increasing from the inner end toward the outer end.

Abstract: A disc loading device includes a loading motor, a loading roller that is driven by the loading motor and that loads and unloads a disc, a gear device provided between the loading motor and the loading roller, the gear device including a plurality of gears, and a power train control device which is configured to control power between the plurality of gears, wherein the power train control device operatively disconnects a power transmission train between the plurality of gears when the disc is unloaded.

Abstract: A disc loading and ejecting structure for a slot-in optical disc drive aims to drive a compact disc into and out of the slot-in optical disc drive to solve the problems of conventional techniques that they are bulky and occupy too much space. The structure includes a driving portion and a guiding portion that are located at two opposite sides of the slot-in optical disc drive. The driving portion includes a roller with the rotation axis parallel with a positioning surface of the compact disc. A first end edge of the compact disc is abutted on the guiding portion and a second end edge is leaned on the roller. The roller can rotate and move reciprocally in parallel with the direction of the rotation axis to drive the compact disc into and out of the slot-in optical disc drive.

Abstract: A magazine detachably installed in a main body of a disc changer is divided into sections by partitions for storing a large number of optical discs. The magazine is provided with a belt set around rollers, which carries the optical disc in contact with the belt. In the disc changer, the belt is rotated by a gear of the roller, which is engaged with an external drive gear for taking the optical disc through rotating movement. Among the optical discs which have been taken, a target optical disc opposite the slit of the disc control plate passes through the slit, and the other optical discs stop while abutting against the disc control plate. The optical disc which has passed through the slit is inserted into disc carriage rollers, and further carried to the drive for recording/reproducing.

Abstract: A disc transfer mechanism includes a feed roller provided between a drive unit incorporated in a drive apparatus main body and an insert slot formed in the apparatus main body; a roller supporting member pivotably supporting the feed roller between a disc transfer position and an evacuated position; a drive cam for pivoting the feed roller between the disc transfer position and the evacuated position; and a driven cam moving in cooperation with pivoting of the feed roller. The drive cam engages with a rotation shaft of the feed roller and moves rectilinearly along one peripheral end of the drive unit, and the driven cam moves rectilinearly along the other peripheral end of the drive unit.

Abstract: A disc transfer guide apparatus includes a guide plate for transferring a disc by clamping the disc in cooperation with a feed roller and a mount base to which the guide plate is mounted. The guide plate has a pair of plate portions coupled by a coupling portion that can be expandable and shrinkable in an axial direction of the feed roller. Each plate portion has a protruding piece at the outer end and the mount base has a slit engaged with the protruding piece for restraining the guide plate from moving in the axial direction of the feed roller. Each plate portion has inclined protruding threads having a protruding amount from the obverse face gradually increasing from the inner end toward the outer end.

Abstract: A disc changer includes a disc cartridge having an insertion hole, a case body into which the disc cartridge is inserted, having first and second shells which can be separated in which a plurality of disc-shaped recording media are storable by being arrayed in the axial direction of the center axis, and a lock lever for locking the shells in a connected state; and a disc holder to hold the inserted disc cartridge, including an unlocking piece which unlocks locking between the shells by being inserted into the insertion hole when the disc cartridge is inserted into the disc holder to press the lock lever, and a restricting lever supported by the unlocking piece, including a restricting portion engaged with the case body when the unlocking piece is inserted into the insertion hole, so that locking between the shells is unlocked, the restricting lever restricting movement in the extracting direction.

Abstract: An optical disk mechanism has a housing with at least one disk entry/exit aperture. A disk guide, such as a plate, is aligned with and guides an optical disk through the disk entry/exit aperture. Two beams rotatably support at least one roller and a drive mechanism. Flexing and biasing the roller towards the disk, the two beams maintain a rotational axis of the roller parallel to the disk and accommodate varying separation between the roller and the disk guide. The two beams are closely spaced and non-coplanar, and may be part of a double-beam mount. The double-beam mount attaches the two beams to the housing and to a frame, which positions the roller near the disk guide and the disk entry/exit aperture. Sliding the disk along the plate or other disk guide, the roller is reversible to drive the disk in or out through the disk entry/exit aperture.

Abstract: A disk storage medium processing apparatus includes an apparatus body having a disk loading/unloading slot, a traverse unit which is disposed in the apparatus body to conduct at least one of recording, deletion, and reproduction of information onto or from a disk, and a clamper supporting device for supporting a clamper which clamps the disk to the traverse unit. A disk conveying device conveys the disk into the apparatus body when a part of the disk is inserted through the disk loading/unloading slot and which ejects a part of the disk through the disk loading/unloading slot from a state that the disk is housed in the apparatus body. The disk conveying device includes a pair of first and second disk conveying arms which are pivotably attached to the apparatus body and holding a periphery of the disk to convey the disk.

Abstract: A disc apparatus includes: a playback unit 1 provided with a conveying roller 5 and a disc guide 3 to be vertically movable with respect to an apparatus main body; a moving means for moving downward the conveying roller and the disc guide in amounts of travel which are different from each other to avoid contact of the roller and the guide with a disc 14 with interlocking an operation that the loaded disc 14 is moved downward to be mounted on a turntable 6; and a disc-guide-cum-position-regulating member 102 attached to the apparatus main body corresponding to a disc loading port such that the playback unit is restrained from moving to the disc loading port side.

Abstract: An apparatus and system for recording, playing, handling, and storing a plurality of media disks in a plurality of configurations and a device for moving any disk into and out of a media disk storage mechanism and into or out of a selected media player/recorder on demand, and a controller for directing operation of the device for moving the disks and controlling selection of operation of the media disk storage mechanism.

Abstract: A disc clamping mechanism includes a clamp board, a clamp base, a first supporting unit and a second supporting unit. The clamp board rotatably clamps a disc in cooperation with a turntable to be rotated in a housing. The clamp base rotatably supports the clamp board at a position opposite to the turntable, and is movable so as to move away from or come into contact with the turntable. The first supporting unit comes into contact with a first peripheral edge of the clamp board protruding from the clamp base when the clamp board moves away from the disc according to the movement of the clamp base, to exert pushing force in a direction of the turntable side and pushing force in a direction of the clamp base side against the first peripheral edge. The second supporting unit is provided at the clamp base, and securely supports the second peripheral edge of the clamp board situated at a position opposite to the first peripheral edge when the first peripheral edge is pushed by the first supporting unit.

Abstract: A disk apparatus comprising a chassis outer sheath having a base body 10 and a lid, in which a front surface of the chassis outer sheath is formed with a disk inserting opening 11 into which a disk is directly inserted, a lever which is operated when the disk is inserted or discharged is provided in the chassis outer sheath, the lever is provided at its movable side end with a guide 17, and the disk is guided by the guide 17, wherein the guide 17 comprises a stationary portion 101B fixed to the lever, a movable portion 101C which is displaced with respect to the stationary portion 101B, and an elastic body which biases the movable portion 101C in a direction away from the stationary portion 101B.

Abstract: A disk carrying device including a transporting roller for carrying a disk, a turntable and a clamper for holding the disk, a trigger plate moved by carrying of the disk to a chucking position for changing a transmission route of driving force from the transporting roller to a cam plate, a first biasing means for urging the trigger plate to a position before moving, a guide base for pressing the disk on the transporting roller, an arm roller disposed on an opposite side of the guide base with respect to the transporting roller so as to move the guide base apart from the transporting roller, and a second biasing means disposed between the guide base and the arm roller. The second biasing means is extended when the disk is present between the guide base and the transporting roller and generates urging force pulling the guide base to the transporting roller.

Abstract: A disk playback device is arranged such that a lever member is, when the lever member has the conveyance force of a disk having abutted against a disk-detecting end of the lever member exerted thereon, the lever member is rotated in a carrying direction of the disk against the urging force of an urging member; thereby, a tip portion of the lever means moves a lock member in the direction where the lock by the lock ember is released; a long hole of the lever means is, when the lock member is moved off the tip portion before long, guided by a boss shaft of a clamp member to be moved by the urging force of the urging member; thereby, the disk-detecting end is moved off the disk clamped against the turntable, and also a pin of the clamp member fits in a cutaway groove of an arcuate hole of the lever member to position the lever member.

Abstract: An optical disc reproducing device including rollers configured to carry an optical disc inserted in a slot in an inside direction to a reproduction possible position and to carry the optical disc in an outside direction to a prescribed ejecting position from the reproduction possible position, a plurality of position detecting switches to detect positions of the optical disc in the device, and a carrying control unit configured to control to drive the rollers based on states of the position detecting switches so as to carry the optical disc. The carrying control unit, when the optical disc stops at a position except the reproduction possible position and the ejecting position, drives the rollers to carry the stopped optical disc to the ejecting position, in at least one of cases that a state of any position detecting switch has changed and that any operating key is operated by a user.

Abstract: Disclosed herein is a recording medium drive system including: a casing provided in a front face thereof with a slot through which to insert and discharge a recording medium having a principal surface and an opposite surface; and a sheet-formed member provided so as to close the slot and having a loop-formed deflected part which, while being deformed, is capable of making contact with at least one of the principal surface and the opposite surface of the recording medium at the times of insertion and discharge of the recording medium.

Abstract: To provide an optical disc device in which an identification and a disc ejection control processing for an optical disc with a high transmitting property and an 8-cm optical disc attached to an adapter can be effected easily and positively. There are provided a body capable of receiving an optical disc therein, an insertion/ejection port capable of insertion and ejection of the optical disc relative to the interior of the body, and rollers which are provided within the body, and rotate, while holding the optical disc therebetween, so as to convey the optical disc into the interior of the body. A mechanical detector, having a contact element for contact with at least one of obverse and reverse surfaces of the optical disc to detect the optical disc, is provided within the body so that an identification and a disc ejection control processing for optical discs can be effected easily and positively.

Abstract: A light receiving device generates photocurrent that corresponds to the quantity of incident light. A capacitor is arranged with one terminal set to a fixed electric potential, and is charged using the photocurrent. A comparator compares the voltage that occurs between both terminals of the capacitor with a predetermined threshold voltage, and generates a judgment signal that corresponds to the comparison result. An initialization switch initializes the voltage that occurs both terminals of the capacitor. A judgment unit acquires, as data which indicates the quantity of light, the level of the judgment signal at a timing after the passage of a predetermined judgment period of time from the commencement of charging of the capacitor using the photocurrent.

Abstract: A disc device is disposed to include contact parts which are relatively and respectively disposed in a roller base member and a slider member in such a way that a movement of the roller base member which receives the spring force of a pushing member to move a conveying roller to a disk conveying position causes a backward movement force to be applied to the slider member after engagement between a rack and a driving gear is released and a driving action of a cam part on the conveying roller is released while the slider member retracts to a disc insertion standby position.

Abstract: A disc device includes a conveying roller and a disc guide which are disposed in such a way as to be able to move upwardly and downwardly with respect to a main unit thereof, and a moving unit for downwardly moving said conveying roller and said disc guide by different amounts of travel respectively in synchronization with a downward movement of an inserted disc and placement of the disc on a turntable.

Abstract: A disk-storing disk may include multiple supporting members for supporting disks and being stacked in the axial direction; a supporting member selecting mechanism for moving a supporting member to a selecting position; a driving unit having a rotational driving unit for clamping and rotating a disk held by the supporting member at the selecting position; a transporting mechanism for transporting a disk inserted from an insertion opening of the casing to the selected supporting member at the selecting position; and a restriction guide member having a restriction face and being turnably supported between a guiding attitude and a non-acting attitude; wherein, when a disk is transported toward a supporting member at the selecting position by the transporting mechanism, the restriction guide member turns to the guide attitude, and when the supporting member is moved by the supporting member selecting mechanism, the restriction guide member turns to the non-acting attitude.

Abstract: A disk loading mechanism comprises a frame and a roller mounted on a carrier. The carrier is pivotable with respect to the frame to bias the roller onto the disk. It would be advantageous to provide a disk loading mechanism in which the forces exerted on a disk to be inserted in or ejected from a drive unit by a roller providing a movement of the disk are equal for the inserting and ejecting operations. To better address one or more of these concerns it is suggested to provide a disk loading mechanism comprising reduction gears which do not transmit any other than rotational forces onto the roller. Any other forces are accommodated for by the carrier and compensate each other such that they do not have any influence on the biasing of the carrier towards the disk.

Abstract: A transport unit 41 includes a holding section 41A that holds a disc 11 and a transport section 41B that transports the disc 11. Since the disc 11 is held by the holding section 41A when the disc 11 is transported, the disc 11 is prevented from being disengaged from the transport section 41B, so that a transport distance of the disc 11 can be lengthened.

Abstract: An optical disk transport device for optical disk playing device comprises: a delivery roll and an optical disk guiding device located at the optical disk insertion inlet; a pair of detection bars provided with detection parts contacting the periphery of the optical disk inserted from the optical disk insertion inlet, and the detection bars being capable of freely rotating around respective rotary pivots; a linkage plate for controlling the pair of detection bars to move together; an elastic part making the detection bars to rotate according to the direction that makes the detection parts to contact the periphery of the optical disk; and an optical disk baffle for stopping the transport of the small diameter optical disk as the center of the small diameter optical disk passing the center of the plummer; the detection parts of the pair of detection bars are located between the delivery roll and the plummer.

Abstract: An optical disk loading final position detection device comprises: an optical disk guiding device and a delivery roll located at the optical disk insertion inlet; a pair of detection bars provided with detection parts contacting the periphery of the optical disk of big diameter or small diameter inserted from the optical disk insertion inlet, and the detection bars being capable of freely rotating around respective rotary pivots; a support part, one end of the support part being rotatablely fixed to the upper base plate near the detection part of one detection bar, the middle of the support part being provided with an assorted part interacting with the detection bar; and a trigger bar, the middle of the trigger bar being rotatablely fixed to the free end of the support part, one end of the trigger bar being provided with a contact part for contacting the periphery of an optical disk, and the other end being connected to a control part.

Abstract: In a storage medium carrying mechanism of a storage medium reproducing apparatus, a pressing member paired with a carrying roller is swingably attached, the pressing member forms a shut-off portion in a front side, shafts extend externally from both ends of the pressing member, and arms extend downward in the vicinities of both the ends. An urging means is interposed between the pressing member and a frame to press a large-diameter storage medium inserted from a storage medium insert port to a carrying roller side by the pressing member at all times while a pressing means is disposed to press both the arms against an urging force of the urging means and swings the pressing member through both the arms so that the storage medium insert port is temporarily closed.

Abstract: A disk loading device includes a driving roller (6) that rotates, and a disk guide (8) that holds an optical disk (3) between the driving roller (6) and the disk guide (8). The disk guide (8) includes a pressing portion (8a, 8b, 8c and 8d) disposed in opposition to the driving roller (6), a swinging shaft (8e, 8f) supported by a shaft receiving portion (11a, 11b), and a spring (10a, 10b) that urges the disk guide (8) toward the driving roller (6). The shaft receiving portion (11a, 11b) supports the swinging shaft (8e, 8f) so that an inclination of the disk guide (8) with respect to the rotation axis of the driving roller (6) is changeable.

Abstract: It is an object of the present invention to provide a slot-in type disk apparatus which can be reduced in thickness by precisely guiding a moving position of a disk when the disk is inserted and discharged. The slot-in type disk apparatus in which a base body 10 and a lid constitute a chassis sheath, a disk-insertion opening 11 into which a disk is directly inserted is formed in a front surface of the chassis sheath, a traverse base 30 is disposed on the side of a front surface of the base body 10, a spindle motor held by the traverse base 30 is disposed at a central portion of the base body 10, the traverse base 30 is provided with a traverse base cover 30A, a discharge lever 100 can move in a portion on the traverse base cover 30A, and a movable-side end of the discharge lever 100 is provided with a guide which holds a disk, and a height of the discharge lever 100 with respect to the traverse base cover 30A is set by contact between the discharge lever 100 and the turntable 31B.

Abstract: An optical disk transport device for optical disk player comprises a carrying roller, an optical disk guiding part located above the carrying roller, an elastic part for pressing the carrying roller towards the optical disk guiding part, and a motor for driving the carrying roller to rotate. The roll body of the carrying roller is of a bipyramidal structure with the diameter gradually decreasing from the two ends to the middle. The positions on the optical disk guiding part opposite to each pyramid of the carrying roller are provided with at least one rotatable driven roller. The rotating axes of each driven roller are located in the plane which is the rotating axis of the carrying roller located in and is vertical to the roof of the optical disk playing device, or are parallel to the plane. The ends adjacent to the middle of the carrying roller of each driven roller slant upwards, so as to make the driven rollers only contact the outer margin of the optical disk when the optical disk is inserted.

Abstract: A disk carrying device including a transporting roller for carrying a disk, a turntable and a clamper for holding the disk, a trigger plate moved by carrying of the disk to a chucking position for changing a transmission route of driving force from the transporting roller to a cam plate, a first biasing means for urging the trigger plate to a position before moving, a guide base for pressing the disk on the transporting roller, an arm roller disposed on an opposite side of the guide base with respect to the transporting roller so as to move the guide base apart from the transporting roller, and a second biasing means disposed between the guide base and the arm roller. The second biasing means is extended when the disk is present between the guide base and the transporting roller and generates urging force pulling the guide base to the transporting roller.

Abstract: To provide an optical disc device in which an identification and a disc ejection control processing for an optical disc with a high transmitting property and an 8-cm optical disc attached to an adapter can be effected easily and positively. There are provided a body capable of receiving an optical disc therein, an insertion/ejection port capable of insertion and ejection of the optical disc relative to the interior of the body, and rollers which are provided within the body, and rotate, while holding the optical disc therebetween, so as to convey the optical disc into the interior of the body. A mechanical detector, having a contact element for contact with at least one of obverse and reverse surfaces of the optical disc to detect the optical disc, is provided within the body so that an identification and a disc ejection control processing for optical discs can be effected easily and positively.

Abstract: A device for storing optical discs is disclosed. The device includes a housing, a carousel arranged in the housing for movement relative to the housing, the carousel having a plurality of storage compartments each for storing a disc, an opening in the housing through which a disc can pass, drive means for driving the carousel relative to the housing to align each of the storage compartments and a disc stored in that storage compartment in registry with the opening, and an ejection system to eject a disc from a storage compartment and through the opening in said housing. The ejection system is powered by a motor and a clutch system, and control means is provided to cause said carousel to rotate and to cause the ejection system to operate as instructed by a user.

Abstract: A disk recording and/or reproducing apparatus in which a disk-shaped recording medium such as an optical disk is able to be transported between a disk loading portion for recording and/or reproducing information and a disk entrance and exit slot into and from which the disk-shaped recording medium is inserted and ejected. The disk recording and/or reproducing apparatus includes a pair of transport rollers which can hold the disk-shaped recording medium in the diametrical direction and a drive means for rotating a first transport roller of the pair of transport rollers and wherein a second transport roller of the pair of transport rollers is fixed and the drive means rotates the first transport roller to rotate the disk-shaped recording medium by rotation force so that the disk-shaped recording medium is transported between a disk loading portion for recording and/or reproducing information and a disk entrance and exit slot.

Abstract: A structure on a base plate is simplified, and the thickness of the structure on the base plate is reduced. A disk transfer mechanism includes a housing having a disk slot. A disk is inserted from the disk slot between a base plate and a top panel of the housing. A disk transfer mechanism has a motor and a rotation transmitting assembly for transmitting rotation of the motor to the transfer rollers. The disk transfer mechanism rotates the transfer rollers to transfer the disk onto a disk table. The rotation transmitting assembly includes a base-plate rotation transmitter disposed on the base plate and a top panel rotation transmitter disposed on the top panel. Thus, the components of the rotation transmitting assembly are distributed on the base plate and the top panel.

Abstract: A disc conveying apparatus includes a first conveyor unit having a plurality of rollers which are arranged along a conveying path of a disc-shaped recording medium with gaps therebetween, which move in a direction away from the conveying path and rotate individually, and which convey the disc-shaped recording medium by successively rolling on a peripheral surface of the disc-shaped recording medium to pass the disc-shaped recording medium from one to another, a second conveyor unit which faces the first conveyor unit across the disc-shaped recording medium being conveyed, which is oriented along the conveying path, and which retains the disc-shaped recording medium between the first conveyor unit and the second conveyor unit, and a control unit which detects the position of the disc-shaped recording medium and controls the rotation of the rollers on the basis of the movement of the rollers in the direction away from the conveying path.

Abstract: A disk drive device equipped with a disk transfer mechanism for loading a disk into and out of a play position that does not increase the complexity of the overall structure and the size of the housing. The device comprises a tray for supporting a disk within the housing, first and second transfer rollers carried by arms, that are resiliently urged against the peripheral edge of the disk, and spaced from each other along a side of the tray to apply a rotational force to a side peripheral edge of the disk, and fixed guide members for supporting the other side peripheral edge of the disk that is inserted from the slot.

Abstract: An object of the present invention is to provide a disk-loading roller which consistently loads and ejects a disk without a considerable decrease in conveying force, even when the roller is employed in the presence of a very large amount of dust or over a very long period of time. The disk-loading roller is for loading a disk with the roller abutting a peripheral portion of the disk, and the roller has such an outer surface that the outer diameter of the roller varies in an axial direction and is formed from a rubber molded elastic product, wherein the roller has a rough outer surface having a peak count RPc of 2 to 30 per 700 ?m, a maximum valley depth Rv of 35 to 80 ?m, and an arithmetic mean roughness Ra of 2.5 to 5.5 ?m, wherein these values are mean values as determined through measurement of the rough outer surface in a ×400 vision field.

Abstract: A disc conveying apparatus includes a first conveyor unit having a plurality of rollers which are arranged along a conveying path of a disc-shaped recording medium with gaps therebetween, which move in a direction away from the conveying path and rotate individually, and which convey the disc-shaped recording medium by successively rolling on a peripheral surface of the disc-shaped recording medium to pass the disc-shaped recording medium from one to another, a second conveyor unit which faces the first conveyor unit across the disc-shaped recording medium being conveyed, which is oriented along the conveying path, and which retains the disc-shaped recording medium between the first conveyor unit and the second conveyor unit, and a control unit which detects the position of the disc-shaped recording medium and controls the rotation of the rollers on the basis of the movement of the rollers in the direction away from the conveying path.

Abstract: A loading and unloading module for optical disk drives includes a track plate, a moving plate, a guiding plate, a guiding arm and three rollers for three-point anchoring to achieve the functions of retrieving a disc, conveying the disc and ejecting the disc to substitute for conventional tray loading type or leaf-actuation loading type designs. The optical module is prevented from being scraped or damaged, and space utilization is improved. It also is adaptable for handling different sizes of discs.

Abstract: An apparatus for loading a disk in a disk player. The apparatus includes a main chassis on which a transferring roller for transferring the disk to the inside of the player is mounted; a power transferring unit for transferring power of a driving motor to the transferring roller; and a slider mounted on the main chassis, for being moved back and forth along a loading direction of the disk, and which is selectively connected to the power transferring unit, for being driven back and forth. The apparatus further includes an interworking mechanism for guiding the disk into a chucking position, and which is moved and pushed by the disk going forward upon entrance of the disk, to move the slider to connect with the power transferring unit; and a sub-chassis for cooperating with the slider to move back and forth in a direction perpendicular to the loading direction, and to cooperate with the interworking mechanism to isolate the interworking mechanism from the disk positioned on the chucking position.

Abstract: The present invention relates to a disk recording and/or reproducing apparatus in which a disk-like recording medium such as an optical disk is transported between a disk loading portion provided for recording and/or reproducing information and a disk unloading portion for inserting and ejecting the disk-like recording medium. The disk recording and/or reproducing apparatus includes a pair of transport members for holding a disk-like recording medium in its diametrical direction, a drive means for driving a first transport member of the pair of transport members and giving rotation force to rotate and move the disk-like recording medium held between the pair of transport members and a space adjusting mechanism capable of adjusting a space by making the pair of transport members become close to or away from each other in response to the size of the disk-like recording medium.

Abstract: On a loading block LB, there are provided a wire 1 having spring properties and two rollers (disk pressing sections) 2 made of rubber that are capable of rotating about this wire 1 as their rotary shaft. One end of the wire 1 is coupled with a cam hole 4a provided in a large-diameter gear (rotary member) 4 of the loading block LB through a linking plate (operating member) 3 and a coupling pin 3a provided on this linking plate 3, so that the rollers 2 are subjected to drive control between a pressing position and a release position by the operation of this cam hole 4a. During disk feeding or clamping action, the disk D can be pressed against the disk holder DH by pressing the rollers 2 against the disk D.

Abstract: A connecting member connects a pair of holder plates toward the end of the holder plates at the recessed end in the direction in which the disk is inserted. By forming the holding member holding disks using three pieces, there is less deformation causes by high temperatures compared to integrally formed units. Also, since this connecting member only serves to connect the pair of holder plates, a thin rod-shaped connecting bar can be used. This allows the clearance between the disks held toward the back of the device and the rear panel to be minimized, thus contributing to a reduced depth dimension for the device.