Recording medium peeling device, image forming device and adjustment method

A recording medium peeling device includes: a circularly moving section that has a moving surface circulating along a circulation course; and a pressing section that presses a recording medium passing through a pressing position in the circulation course, against the moving surface at the pressing position. The recording medium peeling device further includes: a peeling member that is disposed downstream from the pressing position in the circularly moving, is apart from the moving surface, is provided along the moving surface, extends in a direction crossing a direction of the circularly moving, and peels the recording medium after passing through the pressing position from the moving surface; and a protruding member that is disposed downstream from the peeling member in a direction in which the recording medium after being peeled by the peeling member proceeds, protrudes from the peeling member side to the recording medium side, and slopes downstream.