LOW PROFILE CARTRIDGE FOR DATA STORAGE DISK

Various configurations of cartridges for optical disks, particularly first-surface optical disks, are provided. Among the feature are a shutter having a tab which slides in a slot in the housing as the shutter member moves between a closed position and an open position, the slot being isolated from an interior of the disk so as to protect the disk from debris generated as the shutter member moves between the first and second positions. a slot in an edge of the housing, the slot being covered when the shutter member is in the first position and being uncovered when the shutter member is in the second position, the slot being for providing clearance for a blocking tab in a drawer mechanism so as to allow the cartridge assembly to be fully inserted into the drawer mechanism when the shutter member is in the second position. A reverse-lockout slot is formed in the trailing edge to prevent the cartridge assembly from being fully inserted, trailing-edge first, into a drawer mechanism. A locking arm is mounted in the cartridge assembly and rotatable about a pivot point, the locking arm containing a locking nub for engaging the shutter member so as to prevent the shutter member from being opened. The locking arm further contains a cam surface adjacent the locking nub for engaging the shutter member when the shutter member is being closed, the cam surface being in a concave shape. The locking arm also contains a spring member urging the locking arm such that the locking nub is in position to engage the shutter member and a restraining edge for contacting a opposing surface of the cartridge assembly to prevent damage to the spring member from rotation of the locking arm. The cartridge may contain a spring member arranged so as to bias the shutter member towards the first position, one end of the spring member being hooked to assist in holding the spring member in place. L'invention concerne une pluralité de configurations de cartouches destinées à des disques optiques, et notamment à des disques optiques à surface primaire. Un élément de fermeture est muni d'une languette coulissant dans un intervalle situé dans un compartiment lorsque l'élément de fermeture se déplace entre une position fermée et une position ouverte, cet intervalle étant isolé de l'intérieur du disque de manière à protéger le disque contre les débris produits lorsque ledit élément de fermeture se déplace entre la première et la seconde position. Un intervalle est défini dans le bord dudit comparti