摘要 |
PROBLEM TO BE SOLVED: To prevent coating defects due to bubbles generated from below a cylindrical body when the outer surface of the cylindrical body is dip-coated with a coating matter while opening its one end. SOLUTION: In this method, when a cylindrical body 1 whose upper end is closed and whose lower end is opened is vertically dipped into the coating material to coat the outer surface thereof with it, float 3 whose outer diameter is smaller than the inside diameter of the cylindrical body 1 and which is provided with an oscillation preventive member 4 on the side face thereof is floated on the surface of the coating material, and with the lower end of the cylindrical body 1 pressing the oscillation preventive member 4 of the float 3, the cylindrical body 1 is dipped into the coating material so that the float 3 enter the inside of the cylindrical body 1 to coat it with it. As the cylindrical body 1 used in this dip-coating method, a base body for a photoreptor drum or a base body for a developing sleeve is exemplified. |