SHUTTER OPENING MECHANISM FOR RECORDING MEDIUM CARTRIDGE

摘要

PROBLEM TO BE SOLVED: To prevent the groove of a recording medium cartridge from being scratched by a shutter opening member. SOLUTION: The shutter opening member 48 in a tongue shape, which enters the groove 3a installed in the recording medium cartridge and presses a shutter 6 to an opening position as the recording medium cartridge 2 is inserted into a prescribed position is arranged. Projections 48b and 48b whose surfaces have curve faces and which protrude at least from one side of the main face of the shutter opening member are installed in the shutter opening member.