This is a charging assembly that is useful in marking processes with an electrostatically charged surface. A polymer with relatively high dielectric properties covers the conductor of the electrode for operation of the system at above about 10,000 VDC. A four stage pipeline ADC provides an 8 bit digital output with redundancy and error correction. The DOF range provides a first field of view while the macro range provides a second FOV that is smaller than the first FOV within the DOF range. One surface of the metal sheet is provided with at least one protrusion portion which is of the same size as the semiconductor chip and exposed on a surface, and the semiconductor chip is fixed on the protrusion portion. Comb teeth structure having comb teeth are provided between the fuel gas passage section and manifold and between the oxidizing gas passage section and manifold in a diffusion layer on the membrane electrode assembly, wherein slits spaces formed between the comb teeth are in communication with the diffusion layer.