Patent ID: 6046976
Filing Date: 2000-04-04
Classification: G11B

Abstract:
A disk cartridge in which a recording disk is stored in a space formed by fastening an upper half and a lower half, said upper half having a groove portion and a rib portion, said groove portion extended from a front end to a central portion direction to oppose a mis-insertion preventing protrusion formed on at least one side surface of said lower half,wherein an engagement concave portion is formed on the inner surface of said groove portion engaged with and held by a holding member within said disk drive when said disk cartridge is loaded onto said disk drive; and furtherwherein a lower edge of said rib portion corresponds to the surface of said groove portion, such that the thickness of said rib portion is less than the thickness of said upper half, said groove portion being substantially perpendicular to a side surface of said rib portion.