Slim-type recording and reproducing apparatus having positioning structure for positioning a tray therein

An optical recording and reproducing apparatus comprising:

• an outer casing having a tray-receiving compartment and an entrance for access into said compartment, said outer casing further defining a tray moving direction;
• a tray disposed within said outer casing and movable along said tray moving direction between a retracted position, in which said tray is retracted into said outer casing, and an extended position, in which said tray is protruded outwardly from said outer casing via said entrance;
• and
• a positioning structure including:
• a locking member fixed on said outer casing, and
• a support member for immobilizing said locking member with respect to said outer casing in such a manner that said locking member extends upwardly into said outer casing to prevent movement of said tray with respect to the outer casing,
• thereby positioning said tray stationarily at said retracted position,
• wherein, said support member includes an annular base portion surrounding said locking member and first and second rib portions extending from two opposite ends of said annular base portion in said tray moving direction.