NOVELTY - A separator (20) comprises metal base material (21), and conductive resin layers which covers surface of the base material. At least one portion of surface of the base material consists of portion of conductive resin layer (22) (A) and additional portion which consists of electroconductivity or insulating resin layer (23) (B). The conductive resin layer (A) and electroconductivity or insulating resin layer (B) are arranged in parallel with respect to the surface direction of the surface of the metallic substrate.    USE - Separator is used for fuel cell such as solid polymer electrolyte fuel cell, direct methanol fuel cell, phosphoric acid type fuel cell, molten carbonate type fuel cell, solid oxide type fuel cell, alkali type fuel cell used as electric power supply for portable electric equipments, fixed type electric power generation warm water feeder for cogeneration and electric vehicles.    ADVANTAGE - The separator has high mechanical strength, corrosion resistance, electroconductivity, large industrial value, reduced thickness, and is manufactured economically and simply.    DETAILED DESCRIPTION - A separator comprises metal base material, and conductive resin layers which covers surface of the base material. At least one portion of the surface of base material consists of portion of conductive resin layer (A) and additional portion of electroconductivity or insulating resin layer (B). The conductive resin layer (A) and electroconductivity or insulating resin layer (B) are arranged in parallel with respect to the surface direction of the surface of the metallic substrate. The conductive resin layer (A) comprises conductive resin containing noble metal type particles as electroconductive filler. The electroconductivity or insulating resin layer (B) comprises conductive resin containing carbon type material as electroconductive filler. An INDEPENDENT CLAIM is included for manufacture of separator.    DESCRIPTION OF DRAWING(S) - The drawing shows cross-sectional view of principal portion of separator.    Separator (20)    Metal separator base material (21)    Conductive resin layers (22,23)