In a rendering apparatus for bitmapping object data into bitmap image data in accordance with a process list to generate rendering data, a plurality of addresses to the process list is designated. Accordingly, the printing job is performed by adjusting color information regardless of whether an emulator of the image forming device supports a color adjustment function, increasing the efficiency of the printing operation. For ions of the same mass to charge ratio, the difference between the lengths of flight time of the ions flying the loop orbit N turns and of the ions flying the loop orbit N+1 turns depends on the speed of the ions, so that the difference depends on the mass to charge ratio of the ions. The clamp allows the connecting body to slidingly engage with the third rod. The small image is superimposed on the image corresponding to the predetermined function.