Information recording disc player having receiving parts for receiving a plurality of disc cartridges

An information recording disc player for playing an information recording disc, said information recording disc player comprising:

• a main player body;
• a first receiving part in said main player body for receiving a first disc cartridge which can accommodate a plurality of information recording discs each put on a tray;
• a second receiving part in said main player body for receiving a second disc cartridge which can only accommodate a single information recording disc put on a tray, said first and second receiving parts being arranged so that the information recording discs accommodated within said first and second disc cartridges are arranged coaxially when said first and second disc cartridges are in said first and second receiving parts, respectively, said first and second receiving parts being open at first and second predetermined openings of a front panel of the main player body, respectively:
• means for ejecting said first disc cartridge from said first receiving part through said first predetermined opening of the front panel of the main player body;
• means for moving said second disc cartridge through said second predetermined opening of the front panel of the main player body between a disc receive/eject position, where said single information recording disc can be set into and removed from said second disc cartridge, and a loaded position within said second receiving part;
• a disc playing unit in said main player body for playing an information recording disc;
• and
• a mechanism for selectively loading an information recording disc on said disc playing unit from either one of said first and second disc cartridges in said first and second receiving parts and for unloading the information recording disc from said disc playing unit into the disc cartridge from which the information recording disc was originally loaded,
• said mechanism comprising a first mechanism for moving said disc playing unit in a first direction so that said disc playing unit confronts one information recording disc accomodated within one of said first and second disc cartridges in said first and second receiving parts, and a second mechanism including a slider for extracting said one information recording disc together with the tray from said one disc cartridge to be loaded on said disc playing unit and for inserting said one information recording disc together wit the tray unloaded from said disc playing unit into said one disc cartridge, said slider moving in a second direction perpendicular to said first direction, said second mechanism being mounted on said disc playing unit to be moved together with said disc playing unit by said first mechanism.