A developer layer thickness regulating device includes a blade member for regulating a thickness of a layer of a developer on a surface of a developing roller rotatably supported by a developing container for accommodating the developer and includes a supporting member for supporting the blade member. A plurality of mode storage units is so disposed as to correspond to the memory blocks. In use, stormwater can flow from the chamber in an upwards direction through filter units into the outlet housing. At least one recess in the carrier is formed according to the structure thus obtained. The method may also comprise displaying high resolution, real-time images of the subject during a medical procedure based on the registration of the high resolution 4D model to the 4D surface registration points.