Patent ID: 8012645

Claim:
A separator of a fuel cell which is formed so as to circulate a reactant gas or cooling water, comprising: streaked fluid channels formed of adjacent convex and concave portions formed on the surface of the separator; and a distribution channel which distributes, to these fluid channels, a fluid to be introduced toward the fluid channels, wherein: a position of a terminal end of at least one of the convex portions and a position of a terminal end of at least one of the concave portions constituting the fluid channels are displaced in a streak direction of the fluid channel and have different phases, the terminal end of each of the concave portions is positioned closer to the distribution channel than the terminal end of each of the convex portions, the distribution channel is provided with a plurality of press-molded protrusions, and the plurality of protrusions are disposed on a metal plate, and the separator has a structure of such a type that front and back surfaces are integrated, and is made of a metal.