To prevent the solidifying of paste in the vicinity of a liquid level by comprising plural pairs of first stirring rollers impregnated in the paste in a container to supply a power collector sheet upwardly and stir the paste and at least one pair of second stirring rollers provided in the vicinity of a side wall of the container to stir a paste liquid level.

A paste is entered up to a liquid level of a stationary operation, the paste is stirred by impregnation stirring rollers 2a, 2b, 3a, 3b, 4a, and 4b, a work P is supplied at the stationary speed while stirring a paste liquid level 9 by liquid level stirring rollers 5a and 5b, and an excess adhered paste is scuffed off from the work P by a doctor blades 6a and 6b. Growth of a solidified paste whose initial points are container side walls 1a and 1b is efficiently inhibited by stirring the liquid level 9 by the liquid level stirring rollers 5a and 5b. In addition, a paste in a fluid state from the slide walls 1a and 1b is always supplied to the work P in a sufficient quantity.