An image input section inputs an image of a letter P and stores the same into an image memory. This upper mounting prevents displacement of the processing unit relative to the workpiece due to the forces acting thereon during processing, in particular in the Z-direction. The suspension is formed by active mixing of the active agent and oil. The metal seed paste layer and the adhesion layer are annealed to form a conductive layer in contact with the emitter region of the substrate. Each side ink well is formed between an inclined wall and a side wall. The process of the invention produces an increase in the cetane index and a decrease in the density and T95.