Patent ID: 6353586
Filing Date: 2002-03-05
Classification: G11B

Abstract:
A cartridge accommodating a disk therein, wherein:the cartridge has a rectangular shape having first to fourth corners; at least two mis-insertion protection mechanisms are provided each at a position which is on a side surface section of the cartridge and which is spaced apart from each of the first to fourth corners, the at least two mis-insertion protection mechanisms being provided for preventing the cartridge from being inserted into a cartridge holder in a wrong direction; each of the first to fourth corners is shaped so as to allow for the cartridge to be inserted into the cartridge holder; the side surface section has a first side surface and a second side surface each being formed in a direction which is substantially perpendicular to a surface of the disk and substantially parallel to a direction in which the cartridge is inserted into the cartridge holder; the at least two mis-insertion protection mechanisms comprise a first mis-insertion protection mechanism provided in the first side surface and a second mis-insertion protection mechanism provided in the second side surface; the cartridge holder has a mis-insertion protection member provided within an insertion path along which the cartridge is inserted into the cartridge holder; each of the first to fourth corners is shaped so as to abut the mis-insertion protection member to move the mis-insertion protection member out of the insertion path; and each of the first and second mis-insertion protection mechanisms is shaped so as to engage with the mis-insertion protection member, wherein all of the first to fourth corners have a same rounded shape.