A method of producing a print having a matte finish on a receiver having a surface type includes depositing toner with a viscosity of less than about 10 kpoise in a selected pattern on a receiver. The predetermined engine operating conditions are set for resulting in a substantially zero flow of the post-injected hydrocarbon to an EGR circuit for the specific design of the engine in operation. A retainer is moveable relative to the case from a retaining position to a disengaged position. In a further development, a value, correlating with the blood density, is determined by a measuring device for the change in relative blood volume or hematocrit. Therefore, the complicated power management performed by computer hardware and operation system can be simplified.