Patent ID: 7475410

Claim:
A disc recording and/or playback apparatus comprising: a cartridge holder in which there is to be held a first disc cartridge including a body housing a disc-shaped recording medium rotatably therein, having formed therein extending toward a center thereof from one of lateral sides thereof a write and/or read aperture through which the disc-shaped recording medium is partially exposed to outside in a range between inner and outer radii thereof and a shutter member supported movably on the cartridge body to open and close the write and/or read aperture, or a second disc cartridge including a body housing a disc-shaped recording medium rotatably therein, having formed therein extending toward a center thereof from one of lateral sides thereof a write and/or read aperture through which the disc-shaped recording medium is partially exposed to outside in a range between inner and outer radii thereof; a shutter member supporting mechanism to support, by pressing, the shutter member of the first disc cartridge inserted in the cartridge holder to limit movement of the shutter member; a pressing mechanism to press the second disc cartridge inserted in the cartridge holder; and a pressing controlling mechanism provided in connection with the shutter member supporting mechanism and which is to be moved due to displacement of the shutter member supporting mechanism by the first disc cartridge inserted into the cartridge holder to displace the pressing mechanism for removing pressure applied to the first disc cartridge and has the pressing mechanism press the second disc cartridge inserted in the cartridge holder.