A rotary microactuator-based head-gimbal assembly design controls the
unwanted deflection of a flexure in a data storage device and eliminates
hinge deformation. The head-gimbal assembly maintains the co-planarity of
the hinged islands in the microactuator under the applied load acting on
the flexure and two associated hinged islands. The dimple post is placed
at the dimple loading region of the flexure tongue and has the same
height as adhesive dams on paddles secured to the hinged islands. The
dimple post is formed by branching one of the existing conductive traces
covered by a photoresist layer to the dimple loading region on flexure
tongue. In an alternative embodiment, the dimple post is secured to the
dimple loading region of the flexure tongue by means of adhesives with a
variety of viscosity and elastic moduli.