Apparatus for applying dispersions to selected fuel cell electrode plate regions

An apparatus for applying a flowable substance onto a flat surface of a plate-shaped fuel cell comprising:

• a means for supporting the flat surface,
• a means for directing a fine stream and a coarse stream of flowable substance onto a predetermined area of the flat surface, wherein said fine stream applies the flowable substance to at least a portion of the perimeter of the area of the flat surface, and said coarse stream applies additional flowable substance onto the remaining predetermined area of the flat surface, and wherein the fine stream applies the flowable substance at a volumetric rate lower than the volume rate of the coarse stream,
• a means for effecting relative movement between the fine and coarse streams and the flat surface in an advancement direction to position that area of the flat surface to which the flowable substance is to be applied into alignment with the fine and coarse streams to achieve the desired application, and
• a means for controlling said directing means so that said streams are in existence only when the streams are within the predetermined area.