NOVELTY - Production of separator (1) of fuel cell, comprises setting separator substrate (11) in electrodeposition coating device, and forming sealed electrodeposition chamber by using electrodeposition coating device and separator substrate; and performing electrodeposition coating on separator substrate in electrodeposition chamber. The first step includes arranging separator substrate such that portion of separator substrate is located in the chamber.    USE - For producing a separator of a fuel cell (claimed).    ADVANTAGE - The electrodeposition coating can be efficiently performed with a simple production process and at low cost.    DETAILED DESCRIPTION - Production of separator of fuel cell, comprises setting a separator substrate in an electrodeposition coating device (2), and forming a sealed electrodeposition chamber (31) by using the electrodeposition coating device and the separator substrate; and performing electrodeposition coating on the separator substrate in the electrodeposition chamber. The first step includes arranging the separator substrate such that a portion of the separator substrate is located in the electrodeposition chamber, and the other portion of the separator substrate is located outside the electrodeposition chamber. INDEPENDENT CLAIMS are also included for:    (A) an electrodeposition coating device, comprising a first frame body (21) and a second frame body (22) that sandwich a first object on which electrodeposition coating is performed, thus forming, along with the first object, an electrodeposition chamber that stores an electrodeposition solution, where the first frame body and the second frame body form the sealed electrodeposition chamber while a portion of the first object is located in the electrodeposition chamber and the other portion of the first object is located outside the electrodeposition chamber; and    (B) an electrodeposition coating method, comprising setting an object in an electrodeposition coating device such that a portion of the object is located in an electrodeposition chamber of the electrodeposition coating device and the other portion of the object is located outside the electrodeposition chamber, thus forming the sealed electrodeposition chamber by using the electrodeposition coating device and the object; and performing electrodeposition coating on the object in the electrodeposition chamber.    DESCRIPTION OF DRAWING(S) - The figures are cross-sectional view and plan view showing an electrodeposition coating device.    Separator (1)    Electrodeposition coating device (2)    Separator substrate (11)    Center portion (12)    First frame body (21)    Second frame body (22)    Electrodeposition chamber (31)