Patent ID: 7428740
Filing Date: 2008-09-23
Classification: G11B

Abstract:
1. A recording medium drive apparatus adapted to use a recording medium cartridge having a case and a recording medium accommodated in said case, said case having a substantially arcuate circumferential surface and a pair of straight side surfaces respectively contiguous to opposite ends of said arcuate circumferential surface, at least one of said side surfaces being formed with an engagement groove at a position near said arcuate circumferential surface, said engagement groove including an engaging portion, said recording medium drive apparatus comprising: a holder for holding said recording medium cartridge inserted, said holder having a pair of side plate portions respectively extending along said side surfaces of said recording medium cartridge; a recording/reproducing system for recording and/or reproducing an information signal on said recording medium; a chassis for mounting said recording/reproducing system; an eject lever supported to one of said side plate portions of said holder so as to be movable in an inserting direction of said recording medium cartridge into said holder and in an ejecting direction of said recording medium cartridge from said holder opposite to said inserting direction, said eject lever having a supported portion supported to said one side plate portion of said holder and an engaging projection projecting from said supported portion toward the other side plate portion of said holder, said engaging projection being inserted into said engagement groove of said recording medium cartridge and engaged with said engaging portion in said engagement groove when said recording medium cartridge is inserted into said holder; and a biasing spring for biasing said eject lever in said ejecting direction.