Patent ID: 6191914
Filing Date: 2001-02-20
Classification: G11B

Abstract:
A drive for receiving a data disk having a rectangular housing, a central drive hub, a read window a predefined distance from the hub toward a forward end of the housing and state perforation zones, at the corners of a rear end of the housing opposite the forward end, and an angled corner at the front end of the housing for indicating orientation, said drive comprising:a cover enclosure having defined therein an insertion slot for the data disk;a hub driver positioned adjacent the insertion slot and arranged to coact with the drive hub of the inserted disk in driving engagement;a read head positionable relative to the hub driver to engage a received disk at the read window;a barrier projection arranged to block full insertion of the disk unless presented with said angled corner; andsensor arms coupled to a cam arranged to be displaced by insertion of the disk to be moved to an active position external of the enclosure to engage the rear end of the disk and produce state signals indicative of the state of the perforation zones.