An apparatus and method for generating a delayed clock signal is provided. Such also serves as a storage tray for several sheets of paper to allow automatic feeding from a vertical stack. The stiffener includes a support portion that corresponds to an end portion between the securing portions. During the operation of the ventilator, gas flow in a corresponding amount serves as a bias flow in the breathing circuit to assist breathing by the patient. A transducer receives an energy wave that has traversed the medium and generates an energy wave signal. The electronic devices include a semiconductor chip disposed with its rear side on a chip island.