Disc player that loads both compact disc and mini-disc

A disc player comprising:

• a base plate having a bottom and side walls extending upward from opposite sides of said bottom, and having a compact disc spindle assembly and a cartridge encased mini-disc spindle assembly disposed on said bottom and spaced from each other, and a pickup device respectively on said bottom;
• a compact disc tray connected with said base plate in a horizontally and vertically movable state so that the compact disc can be loaded on the compact disc spindle assembly;
• a moving plate which moves horizontally by a driving apparatus for transferring said compact disc tray;
• a cartridge encased mini-disc tray connected with said compact disc tray in a horizontally and vertically movable state so that the cartridge encased mini-disc can be loaded on the cartridge encased mini-disc spindle assembly, the cartridge encased mini-disc tray being provided with a rack gear formed along the side wall of said cartridge encased mini-disc tray and at least one guide projection projected upward on a lower surface of the compact disc tray;
• and
• a cartridge encased mini-disc tray conveying device provided between said compact disc tray and said cartridge encased mini-disc tray, in which said cartridge encased mini-disc tray is provided in the compact disc tray, the cartridge encased mini-disc tray conveying device being provided with:
• a rack plate having at least one guide hole elongated along a cartridge encased mini-disc tray carrying direction, the rack plate being deposited on the lower surface of the compact disc tray with the guide projection inserted into the corresponding guide hole;
• a spring of which one end is connected to a rear end of the rack plate and the other end of the spring is connected to a rear portion of the compact disc tray so that the rack plate can resiliently move against compact disc tray;
• and
• a transfer gear having a first gear and a second gear in which the first gear engages with the rack gear formed on the side wall of rack plate and the second gear engages with the rack gear formed on the side wall of the cartridge encased mini-disc tray, the first gear and the second gear are integrally formed with each other, and a diameter of the second gear is larger than that of the first gear,
• such that the cartridge encased mini-disc tray is transferred at a higher speed than a transfer speed of the compact disc tray in a loading or unloading operation.