Patent ID: 6307828
Filing Date: 2001-10-23
Classification: G11B

Abstract:
A disc recording and/or reproducing apparatus comprising:a housing section for housing a plurality of discs, said housing section having a plurality of trays each for setting a disc thereon, said plurality of trays being movable between a pull-out position outside of the housing section and a housed position within the housing section;a recording and/or reproducing unit for recording and/or reproducing the disc;a movement unit for moving the recording and/or reproducing unit relative to the housing section, said movement unit causing relative movement between the housing section and the recording and/or reproducing unit in an arraying direction of the plurality of trays housed in the housing section, said movement unit having a positioning mechanism for positioning said recording and/or reproducing unit relative to a sole tray housed in said housing section;a pull-out unit for pulling out from said housing section one of the plurality of trays housed within said housing section towards said recording and/or reproducing unit; anda lift mechanism for moving said recording and/or reproducing unit between a lowered position in which the recording and/or reproducing unit is disposed when one of the trays housed in said housing section is pulled from the housing section to the pull-out position by said pull-out unit and an uplifted position for recording and/or reproducing the disc on said tray,wherein said positioning mechanism includes a plurality of engagement bosses provided so as to be substantially flush with one another on the recording and/or reproducing unit and a plurality of engagement recesses provided in register with the plurality of trays housed in said housing section, said engagement bosses engaging with any of the engagement recesses for positioning the recording and/or reproducing unit,wherein said movement unit includes a position detection unit and wherein the movement unit moves the recording and/or reproducing unit relative to the housing section based on a detection result from the position detection unit,wherein said movement unit includes a pair of movement members on one of which said plural engagement recesses are formed and which are moved in a facing relation to each other, and a driving mechanism for driving said movement members, said position detection unit detecting the amount of movement of one of the movement members, andwherein further plural engagement bosses are provided on another lateral side of the recording and/or reproducing unit, said movement unit having plural linear grooves formed in one of the pair of movement members and the main body portion of the apparatus and plural inclined grooves formed in the other of the pair of movement members and the main body portion of the apparatus, said further plural engagement bosses engaging with the linear grooves and said inclined grooves, each of said movement members being moved by said driving mechanism for moving said recording and/or reproducing unit.