Disclosed is a technique for reducing the leak current by reducing contamination of metal composing a polymetal gate of a MISFET. A shock body is disposed around a portion of the shock rod, the shock body defining a first fluid chamber therein and being slidable along the longitudinal axis. The first conductive layer includes a plurality of conductive islands and holes. The controllable media feeder is controlled to feed media items when the thickness sensor has determined that the thickness of the selected number of media items is at the controllable media feeder. Because the heat extracting light emitting elements transfer the heat from the light source to the illuminated area there is no requirement for disturbing or penetrating the ceiling barrier to a heat sink on the plenum side of the ceiling. The outlet pipe has a plurality of inner diameters each having an inner surface.