Disk drive

A disk drive comprising:

• a first disk rotating mechanism for supporting and rotating a first disk on which data can be recorded and/or reproduced by a first optical beam;
• a first optical head emitting the first optical beam to perform a recording and/or reproducing operation on the first disk;
• a first optical head moving mechanism for moving the first optical head in the substantially radial direction of the first disk;
• a second disk rotating mechanism for supporting and rotating a second disk on which data can be recorded and/or reproduced by a second optical beam;
• a second optical head emitting the second optical beam to perform a recording and/or reproducing operation on the second disk;
• a second optical head moving mechanism for moving the second optical head in the substantially radial direction of the second disk;
• a transport base on which the first disk rotating mechanism, the first optical head, the first optical head moving mechanism, the second disk rotating mechanism, the second optical head, and the second optical head moving mechanism are mounted;
• a disk tray conveyed to a first tray position in which the recording and/or reproducing operation is performed on the first disk, a second tray position in which the recording and/or reproducing operation is performed on the second disk, and a third tray position in which the first disk and the second disk are set onto the disk tray or taken out of the disk tray;
• a first disk tray conveying mechanism for conveying the disk tray in a first direction which is substantially perpendicular to a line connecting a rotation center of the first disk in the first tray position and a rotation center of the second disk in the second tray position and which is substantially parallel to the first disk surface and the second disk surface;
• a second disk tray conveying mechanism for conveying the disk tray in a second direction which is parallel to the line connecting the rotation center of the first disk in the first tray position and the rotation center of the second disk in the second tray position and which is substantially parallel to the first disk surface and the second disk surface;
• a first start-point detection device and a first end-point detection device for detecting whether the disk tray exists in a start-point position and a end-point position of a conveyance path of the disk tray along the first direction or not, respectively;
• and
• a second start-point detection device and a second end-point detection device for detecting whether the disk tray exists in a start-point position and a end-point position of a conveyance path of the disk tray along the second direction or not, respectively.

A disk drive comprising:

• a disk rotating mechanism for supporting and rotating a disk;
• a plurality of optical heads emitting an optical beam to perform a recording and/or reproducing operation on the disk;
• an optical head guiding mechanism for guiding the optical head in a substantially radial direction of the disk;
• a transport unit comprising the disk rotating mechanism, the optical head guiding mechanism, and a transport base on which the disk rotating mechanism and the optical head guiding mechanism are mounted;
• an optical head housing mechanism arranged on the side opposite to the disk rotating mechanism with respect to the optical head guiding mechanism, for housing the plurality of optical heads;
• a disk tray conveyed to a first tray position in which the disk is supported and rotated by the disk rotating mechanism and a second tray position in which the disk is set onto the disk tray or taken out of the disk tray;
• and
• a disk distinction device for distinguishing the kind of the set disk and selecting the optical head for performing the recording and/or reproducing operation on the set disk from the plurality of optical heads when the disk is set on the disk tray,
• wherein the transport unit or the optical head housing mechanism is moved so that the optical head selected by the disk distinction device can be linearly moved from the optical head housing mechanism to the transport unit.