Patent ID: 8116190

Claim:
A recording/reproducing apparatus comprising: a first substrate on which a recording medium is mounted; and a second substrate which faces said first substrate and to which a recording/reproducing head, which performs at least one of information recording and information reproduction on the recording/reproducing medium and protrudes toward the recording medium, is fixed, wherein said first substrate and said second substrate are disposed such that one surface of said first substrate faces another surface of said second substrate substantially parallel to each other, one of said first substrate and said second substrate is relatively displaced in a predetermined direction substantially parallel to the other of said first substrate and said second substrate, with respect to the other of said first substrate and said second substrate, a particulate is placed in a gap between the one surface of said first substrate and the another surface of said second substrate, (i) the particulate is capable of being displaced with displacement of at least one of said first substrate and said second substrate, (ii) the particulate has a substantially circular cross section in a direction that the one of said first substrate and said second substrate is displaced when the one of said first substrate and said second substrate is displaced, said first substrate comprises an uneven portion which protrudes toward said second substrate and whose at least one portion is a stopper for the particulate, and at least one portion of an uneven shape of the stopper is a curve.