Provided is an ink jet recording apparatus capable of easily and more reliably performing fixation processing on a recording medium moved after image recording. The ink jet recording apparatus is provided with: an image forming unit (12) that ejects ink; a first conveyance unit (11) that conveys a recording medium (P) on which the ejected ink is to land and relatively moves the same with respect to the image forming unit; a fixation unit (24) that fixes the ink that has landed on the recording medium; a second conveyance unit (21) that conveys the recording medium on which the ink to be fixed has landed and relatively moves the same with respect to the fixation unit; and a first end pressing roller (215) and a second end pressing roller (216) which serve as a floating suppression unit that suppresses, from the ink-landed surface side, floating of the recording medium from a recording medium conveyance surface in the second conveyance unit. The floating suppression unit suppresses the floating of the recording medium in a suppression range that can be changed and set so as not to include a recording width range in which the image forming unit causes the ink to land on the recording medium.