Fujifilm Corporation

Ryuji Abe

Kazuaki Oguma

A method of pumping an agglomerative liquid includes providing a diaphragm pump defined herein and pumping the agglomerative liquid using the diaphragm pump, the diaphragm has an annular thickened portion in the peripheral portion thereof as defined herein, the pump head has at least one channel communicating the inner peripheral edge of the clamping surface and the pump chamber, the diaphragm is reciprocally movable in opposite directions perpendicular to the diaphragm plane to increase and decrease the volume of the pump chamber so as to pump the liquid, the thickened portion of the diaphragm, the holding member, and the pump head are configured to satisfy the relation A&#x3c;B as defined herein, and the reciprocal movement of the diaphragm is from the flat state toward the pump chamber side and from the flat state toward the side opposite to the pump chamber side.

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Tokyo, Japan

Ryuji Abe