The present invention describes a method, system and apparatus for optimizing a flow of thermal fluid through one in a multitude of local reservoirs which may have local heating capability and which shares a common water heating source. A tolerable path loss for signal links between the base station and a mobile station located within the base station’s cell, is initially determined. A watermark is inserted into the adjusted image and at least one derived image of larger or smaller size is produced. This minimizes the contact pressure between the preceding paper leaf and the succeeding paper leaf, thus achieving smooth feeding of the paper leaves.