An image processing apparatus includes a first image editing unit, an informing unit, a job supplying unit, and a second image editing unit. The valve stem is provided with an orifice, an openingclosing seal inserted between a top of the main housing and the mounting cap to selectively openclose the orifice of the valve stem. At least a portion of the substantially square wave signal is also applied to a plurality of second filters, where each of the second plurality of filters is adapted to pass a range of frequencies adjacent an odd harmonic component of the fundamental frequency and produce a second filtered signal. The electronic latch is in communication with the gesture sensitive surface, and is configured to latch the top cover and the base together. There is provided a clock supply circuit having a filter removing from a first clock signal pulses having a shorter pulse width than a threshold value and passing pulses having a longer pulse width than the threshold value to thereby output a second clock signal; and a divider dividing the second clock signal to thereby output a third clock signal.