Medium processing apparatus and image forming system

A medium processing apparatus comprising:

• a liquid applier configured to apply a liquid to a medium;
• and
• a post-processing device configured to perform post-processing on media including the medium to which the liquid is applied by the liquid applier,
• wherein the liquid applier includes
• a stacker configured to mount the medium on the stacker;
• and
• a liquid application member opposite to the stacker such that the medium is between the liquid application member and the stacker based on the medium being mounted on the stacker, the liquid application member containing the liquid to be applied to the medium, and
• the liquid application member is configured to moves between
• contact position where the liquid application member is in contact with the medium to apply the liquid onto the medium;
• a separation position where the liquid application member is separated from the medium;
• and
• a first medium receiving position disposed-between the contact position and the separation position.