Removable disk storage apparatus and device for accessing the recording medium supported therein

A disk apparatus comprising:

• a chassis;
• loading means provided on said chassis for detachably loading a disk cartridge in which a recording medium is rotatably accommodated;
• rotating means for rotating said recording medium in said loaded disk cartridge;
• head means for accessing said rotating recording medium;
• head moving means supported by a rotating and supporting member provided on said chassis, said head moving means comprising:
• a bent portion;
• a first straight portion projected from said bent portion in a first direction and supported at an end thereof by said rotating and supporting member;
• a second straight portion projected from said bent portion in a second direction, wherein said head means is mounted proximate an end portion of said second straight portion;
• step portions provided on upper and lower sides, respectively, of the other end of said first straight portion;
• two mount plates fixed at base end portions thereof on said respective step portions and forming said bent portion;
• and
• two suspensions whose base end portions are fixed on respective insides of the other end portions of said two mount plates, wherein said two suspensions form said second straight portion;
• drive means for rotating said head moving means through said rotating and supporting member to move said head means to a desired position on said recording medium in said disk cartridge;
• cam means;
• cam drive means for driving said cam means;
• contact means provided at said head moving means and brought in contact with said cam means;
• biasing means for biasing said head moving means in a direction in which said head moving means is inserted into said disk cartridge;
• an eject arm rotatably supported by said chassis for ejecting said disk cartridge from a cartridge holder;
• engagement means provided in said eject arm and engaged with said cam means, wherein said cam means engaged with said engagement means is driven by said cam drive means, thereby said eject arm is moved;
• ramp means inserted between said two suspensions for temporarily extending an interval therebetween;
• and
• guide means provided on said chassis for guiding said ramp means to a predetermined position, wherein said guide means has two guide shafts provided on said chassis in parallel to each other which are slidably moved through two apertures of said ramp means to thereby guide said ramp means.