An MIS capacitor with low leakage and high capacitance is disclosed. Objective:Endurance of a dust cover 50 mounted on a suspension device wherein a top spring seat 85 is formed to be inclined to an axis of a shock absorber 10 and disposed rotatably about a top seat axis inclined to an axis of a shock absorber 10 is improved. A controlling section conducts finishing processing of each of a first sheaf of paper on which the first image data is copied and a second sheaf of paper on which the second image data is copied based on the sheaf-unit sorting instruction. The other electrode of the capacitor is a transparent conductive film.