Patent ID: 6320722
Filing Date: 2001-11-20
Classification: G11B

Abstract:
A cartridge mis-insertion preventing mechanism, comprising:a cartridge tray into which a cartridge is insertable;a loader plate into which said cartridge tray is insertable;a cartridge locking mechanism for locking said cartridge to said cartridge tray;a loading locking mechanism for preventing said cartridge tray and said loader plate from being inserted into a loader guide plate; anda restricting mechanism for changing said loading locking mechanism from a lock state to an unlock state only when said cartridge has been inserted into said cartridge tray in a correct direction;wherein said cartridge tray and said loader plate are inserted into said loader guide plate along with said cartridge when said cartridge is further inserted after said loading locking mechanism has been changed from the lock state to the unlock state;wherein before said cartridge is inserted into said cartridge tray, said cartridge locking mechanism is in an unlock state;wherein when said cartridge tray and said loader plate along with said cartridge have been inserted into said loader guide plate, said cartridge locking mechanism is changed from the unlock state to a lock state; andwherein before said cartridge is inserted into said cartridge tray, said loading locking mechanism is in the lock state.