An ink jet recording apparatus, which records with deposition of ink droplets to a recording medium by use of ink jet recording means, comprises a platen (19) for supporting a recording medium (7) in a position facing ink jet recording means, a plurality of carrier roller pairs (10) for nipping and carrying the recording medium to the position of ink deposition the recording medium using the ink jet recording means and extrusions (17) on the platen extended in the carrying direction of the recording medium with respect to the platen, at the same time, being arranged in a plurality in the direction intersecting the carrying direction of the recording medium to support the reverse side of recording medium. Here, the carrier roller pairs are positioned on each of the extended lines of the extrusions on the upstream side of the carrying direction of the recording medium. With the structure thus arranged, the floating of a recording medium from the platen can be suppressed so as to allow the gap to be formed narrower between the recording medium and recording means, hence making it possible to perform recording in higher quality.