Preventing the imaging forming process of an electrostatographic reproduction apparatus having a plurality of imaging modules in tandem relative to a receiver transport belt moveable along a transport path from becoming contaminated with fuser release oil. The apparatus can be connected via the bus interface to a data bus for the communication of the apparatus with at least one further apparatus forming a sensor, an actuator or a control and connected to the data bus. Increasing the reliability gain factor increases the significance of the decision feedback filtering.