A method for the reduction of caking of excess liquid developer dispersion that remains present on the surface of a member after transfer of liquid developer dispersion from one member to another member in a digital printing apparatus, comprising the step of adding a dispersing composition to the excess liquid developer dispersion, wherein the dispersing composition comprises a dispersing agent. The invention is characterized by the fact that the reaction vessel receiving element is divided into several segments. The first distance may be determined using a depth sensor. The elevating mechanism includes a threaded rod and a nut which engages a pivoting link. The recess is sized and shaped to fit over the head portion of the screw.