A toner for developing electrostatic charge images in which offset phenomenon and winding phenomenon do not occur in a wide temperature range, even if the binding resin contains the alicyclic olefinic resin, that is, a toner for developing electrostatic charge images which is superior in fixability in a high temperature range, and which is superior in melt contamination resistance, is provided. A resonant feedback circuit is configured to generate an oscillating signal following the starting of operation of the circuit by the resistor starting network. Each safety deposit box or other receptacle includes a door with at least one key lock thereon. Since there are no mechanical linkages, the instant invention is applicable for fabrication from the mini- to the nano-technology realm. The temperature is based on the determined number of oscillations.