a method and apparatus for delivering solvent free marking material to a receiver is provided . a printhead includes a discharge device having an inlet and an outlet with a portion of the discharge device defining a delivery path . an actuating mechanism is moveably positioned along the delivery path . a material selection device has an inlet and an outlet with the outlet of the material selection device being connected in fluid communication to the inlet of the discharge device . the inlet of the material selection device is adapted to be connected to a pressurized source of a thermodynamically stable mixture of a fluid and a marking material , wherein the fluid is in a gaseous state at a location beyond the outlet of the discharge device .