A head support mechanism includes a head to write/read information, and a
head support member to support the head. The head support member has
parts delimiting an opening at a portion thereof in which opposing parts
which delimit the opening in a width direction of the head support member
are elastically deformable. Protrusions are formed on edges of the
opening, and piezoelectric elements are mounted on the protrusions to
enable deforming of the head support member in a direction of positioning
of the head.