A device, system, and method for solar cell construction and layer transfer are disclosed herein. A plurality of power supply lines is extended between the lamp for generating light and an inverting board for receiving the power source from the outside to supply power to the lamp. If a particular IO is new, the IO may be assigned to a particular data path processor and an context may be created corresponding to the IO and to the processor. Because the sensors employ magnetoresistive sensing elements, high quality voltage signals are produced, allowing accurate time measurements to be calculated. The regulation member is disposed to be opposed to a magnet which is provided within the two adjacent developing rolls. It thus automatically optimizes the priority of the signal routes in accordance with a state change of the signaling network, without requiring operator intervention.