Disk cartridge having a single closing energizer for closing two independently opened shutters

A disk cartridge which rotatably accommodates a disk-like recording medium therein and is installed in a disk drive apparatus to be used, comprising:

• a flat case having a plane shape;
• a head opening formed between a center portion of said case and a first side along an insert direction of said case into the disk drive apparatus on one main surface of said case;
• a first shutter provided in the case slidably along said first side of said case for opening and closing said head opening;
• a sliding direction regulator formed in said case along said first side for regulating a sliding direction of said first shutter;
• a first slider formed integrally with said first shutter for guiding the first shutter to slide on said first sliding direction regulator;
• an electronic circuit including a semiconductor element which is accommodated in said case excepting an area for accommodating said disk-like recording medium;
• a terminal insert hole formed on the main surface of said case between a side of said disk cartridge at an end of said disk cartridge first inserted into the disk drive apparatus and said head opening in an area excepting a first area where said head opening is formed, a second area accommodating said disk-like recording medium, and a third area where said first shutter is located when said first shutter is opened;
• an outer connection terminal formed facing said terminal insert hole for electrically connecting said disk drive apparatus and a terminal of said electronic circuit;
• a second shutter separated from said first shutter and slidably provided in the case along said first side of said case for opening and closing said terminal insert hole;
• a second slider formed integrally with said second shutter for guiding said second shutter to slide on said sliding direction regulator;
• and
• an energizer for energizing said first shutter in a closing direction;
• wherein said second shutter is opened independently of said first shutter, is held in a position that does not cover the head opening in the opened state, and is energized in the closing direction through said first shutter as a result of said energizer energizing said first shutter in the closing direction.