PLATE-TYPE COMPONENT FOR A FUEL CELL STACK, METHOD FOR POSITIONING SAME AND FUEL CELL STACK

The invention relates to a plate-type component, in particular a separator plate, cathode end plate, anode end plate, half-shell of a separator-, cathode-end-, or anode-end plate or frame for holding a membrane electrode assembly, for a fuel cell stack, wherein a surface of the plate-type component has at least three adjacent regions, forming at least parts of a position marking, and respective neighbouring ones of the at least three adjacent regions are designed in such a way that, when viewing the surface along a predefined direction, the respective neighbouring regions have different average reflectivities at least in the visible region.