摘要 |
A plurality of gravure rolls are rotated while being allowed to abut against a surface of a moving electrode hoop, thereby applying a coating fluid serving as a precursor of porous layers onto a plurality of linear mixture layers. In this way, a plurality of linear porous layers are formed on the associated linear mixture layers formed on the surface of the electrode hoop. In this case, the location at which each gravure roll abuts against the surface of the electrode hoop is controlled according to variations in the lateral location of associated one of the mixture layers independently of the other gravure rolls.
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