Magnetic disc plack loading mechanism with shutter opening and closing mechanism

Claim 1

A magnetic disc pack loading mechanism for positioning a magnetic disc pack in a recording or reproducing position by moving a pack holder containing said magnetic disc pack therein in the same direction with the insertion direction of said magnetic disc pack and thereafter moving said pack holder in the longitudinal direction of a rotary drive shaft perpendicular to said magnetic disc pack insertion direction, said magnetic disc pack loading mechanism comprising: a slide plate movable together with said pack holder only in said rotary drive shaft direction when said magnetic disc pack is positioned; a shutter opening member provided in said slide plate and adapted such that, with a portion thereof being projected into an area for insertion of said magnetic disc pack within said pack holder, it can remove the locking of a shutter provided in said magnetic disc pack, and it can open fully said shutter of said magnetic disc pack stored in said pack holder when said pack holder is moved up to the extreme end of advancement thereof in said magnetic disc pack insertion direction; and, a shutter closing member provided with a claw engageable with a bore formed in the side face of said shutter and arranged in said slide plate such that said claw is disposed in a predetermined position with respect to said shutter opening member, said claw being able to resiliently project into said magnetic disc pack insertion area within said pack holder.