Pen with locking cap

A pen, comprising:

• a shank formed with a reservoir for storing an application fluid including a solvent being volatile at room temperature, the shank including an applicator tip for applying the application fluid;
• and
• a closure cap fitted onto the shank, the closure cap formed with a cavity for accommodating the applicator tip, the closure cap having an inside surface, the closure cap formed with a storage chamber for storing a sacrificial liquid being volatile at room temperature, and the closure cap formed with a connecting channel fluidly communicating with the storage chamber and the cavity, the cavity of the closure cap defining an opening;
• the shank having a portion projecting into the cavity of the closure cap;
• the closure cap including a sealing element being movable between a closing position in which the sealing element closes the connecting channel and an open position in which the sealing element frees the connecting channel, the sealing element being mounted in an axially displaceable manner in the closure cap;
• the sealing element including a wall segment delimiting the storage chamber from the cavity in a manner leaving free at least one longitudinal portion of the connecting channel, the inside surface of the closure cap and the wall segment defining a gap therebetween forming at least one longitudinal portion of the connecting channel;
• the sealing element including a driver element interacting with the shank portion and being directed toward the opening of the closure cap;
• a closure element closing the gap in the closing position of the sealing element, the closure element being formed on the inside surface of the closure cap;
• and
• wherein in order to move in a direction of the open position and/or in a direction of the closing position, the sealing element is movably coupled to the portion of the shank that projects into the cavity of the closure cap.