MANUFACTURING METHOD OF COLOR SELECTION MECHANISM BODY

PROBLEM TO BE SOLVED: To provide a manufacturing method of a color selection mechanism body in which wrinkles are not be generated on an electrode element body after a blackening processing, and to prevent an AG swinging. SOLUTION: In the manufacturing method of the color selection mechanism body including a washing process washing a frame formed by welding two or more members which consist of metal material with each other, a seam- welding process seam-welding the electrode element body with the frame after welding small metallic parts to the washed frame, and a blackening process blackening the united frame and the electrode element body, an annealing process having the same heat schedule with the blacking process, before the seam- welding process after the welding of the small metallic parts.