Transfer device and image forming apparatus for switching a transfer roller between pressed and separated states

A transfer device comprising:

• a transfer drum that rotates in conjunction with a fixing roller;
• a transfer belt that transfers an image onto a medium while rotating along with the transfer drum in a state where the medium is nipped between the transfer belt and the transfer drum;
• a pressing member that is disposed in a space enclosed by the transfer belt;
• and
• a switching unit that moves the pressing member and switches between a pressed state in which the transfer belt is pressed against the transfer drum and a separated state in which the transfer belt is separated from the transfer drum, wherein the switching unit includes a holder portion, a cam portion, and a swing shaft, the holder portion pivoting about the swing shaft based on a movement of the cam portion, wherein
• the switching unit switches, as the separated state, between a first separated state and a second separated state in which the transfer belt is separated from the transfer drum by a distance larger than a distance between the transfer belt and the transfer drum in the first separated state.