Platen and printer

A platen configured to be mounted on a printer configured to eject ink onto a medium, the platen being configured to define a contact surface which is a medium placement surface when the platen is mounted on the printer, the platen comprising:

• a first member having a first surface;
• and
• a second member having a second surface,
• wherein the first member comprises a plate having the first surface,
• wherein a state of the platen is switchable between:
• a first state in which the contact surface is formed by the first surface and the second surface such that a size of the contact surface is a first area;
• and
• a second state in which the contact surface is formed by the first surface such that a size of the contact surface is a second area smaller than the first area,
• wherein in the first state, the first surface and the second surface form the contact surface inside an outer edge of the plate in a direction in which the first surface extends, and
• wherein in the second state, the first surface forms the contact surface inside the outer edge of the plate and the second surface does not form the contact surface.