System for unloading a memory cartridge

An apparatus in combination with a memory cartridge and having a main body defining therein a path of travel of said memory cartridge in at least an insertion direction and a discharge direction, said apparatus further including a device for unloading said memory cartridge, said device for unloading said memory cartridge comprising:

• a cartridge engagement member arranged within said main body and movable in said insertion direction and discharge direction of said memory cartridge, said engagement member including an engagement portion operative to engage said memory cartridge at least when said cartridge engagement member is moved in said cartridge discharge direction;
• a first lever rotatably disposed in said apparatus main body by means of a first fulcrum, said first lever comprising one end portion serving as a point of action for engaging with said cartridge engagement member and an other end portion serving as a point on which a force is applied, said first fulcrum being disposed at a position where a first leverage can be obtained;
• a second lever rotatably disposed in said apparatus main body by means of a second fulcrum, said second lever comprising one end portion serving as a point of action for engaging with said cartridge engagement member and an other end portion serving as a point on which a force is applied, said second fulcrum being disposed at a position where a second lever can be obtained, said second leverage being less than said first leverage;
• and
• an eject member slidingly disposed in said apparatus main body and being freely movable in said cartridge insertion direction and discharge direction, said eject member being operative to engage with said other end portion of said first lever and said other end portion of said second lever, said eject member being operative to move said cartridge engagement member in the cartridge discharge direction through said first lever when it moves said cartridge engagement member initially within a predetermined range, and also to move said cartridge engagement member in the cartridge discharge direction through said second lever when it moves said cartridge engagement member beyond said predetermined range.