Medium processing apparatus and image forming system incorporating same

A medium processing apparatus comprising:

• a liquid applier to apply liquid onto a medium;
• a crimper to crimp and bind multiple media including the medium with the liquid applied by the liquid applier;
• and
• a mover to move the liquid applier,
• wherein the liquid applier includes:
• a liquid storage to store liquid;
• a liquid supply member having:
• a first end immersed in the liquid stored in the liquid storage;
• and
• a second end opposite to the first end;
• a liquid application member attached to the second end of the liquid supply member, the liquid application member to contact the medium to apply the liquid onto the medium;
• a liquid supply facilitator to increase a contact area between the liquid supply member and the liquid stored in the liquid storage, in response to a movement of the liquid applier from an application position to a separation position, and
• the mover moves the liquid applier between:
• the application position at which the liquid application member contacts the medium to apply the liquid to the medium;
• and
• the separation position at which the liquid application member is separated from the medium.