Plating device and plating method

A plating method for performing prescribed plating on a belt-shaped or linear treatment object moving in the longitudinal direction while causing the treatment object to come in contact with a plating device, comprising:

• providing a continuous groove narrower than the width of said treatment object to the portion of said plating device with which said treatment object comes in contact, and feeding a prescribed plating solution from the side of said plating device to a tunnel-shaped space formed by said plating device, said treatment object, and said groove;
• and
• passing an electric current between said plating device and said treatment object and performing prescribed plating on the portion at which said treatment object comes in contact with said plating solution, while a portion of said plating solution flows in the direction in which said treatment object travels through said tunnel-shaped space, and the other portion of said plating solution flows in the opposite direction from the direction in which said treatment object travels through said tunnel-shaped space.

A plating method comprising:

• winding a belt-shaped or linear workpiece transported in the longitudinal direction with a prescribed arc of contact range onto the external periphery of a rotor that has the peripheral wall of an annular opening and is rotatably disposed via a prescribed gap on the external periphery of a fixed drum in which a counter electrode is exposed on the external peripheral surface;
• and
• feeding a plating solution from a plating solution feeding channel formed in the position on the external periphery of said fixed drum that corresponds to the angle position of said prescribed arc of contact range to a tunnel-shaped space along the external periphery of the fixed drum enclosed by the workpiece wound onto the external periphery of said rotor, the peripheral wall of the annular opening formed in said rotor, and the external periphery of said fixed drum, passing an electric current between said counter electrode and said workpiece while discharging the plating solution from both ends of said tunnel-shaped space in which said workpiece and the rotor move away from each other, and performing prescribed plating on said workpiece.