Patent ID: 7095593

Claim:
An apparatus comprising: a head; a head support device including (i) a support arm, with said head at one end of said support arm, (ii) an elastic member near another end of said support arm, and (iii) a first base arm, with an end of said elastic member being fixed to said first base arm, and one of said support arm and said first base arm having a rotation supporting point; a head slider on which said head is mounted, with said head slider being disposed at said one end of said support arm via a flexure; and a balancer at said another end of said support arm such that said rotation supporting point is between said balancer and said head slider, wherein said head slider has a length Ls in a direction of air flow from an air inflow end of said head slider to an air outflow end of said head slider and exhibits an immovable point when said head slider is rotated in a direction of pitch, such that when an external impact force is applied to said head slider, with a distance from an action point of a load, that activates said head slider toward the recording medium, to the immovable point being Lo, 0.5<Lo/Ls<2.