The fluid medium dispensing device (10) has a chamber (12), a distribution member (30), a dispensing membrane (24, 40, 68, 72), and bristles (36). The chamber (12) is configured to contain a flowable medium (62). The distributor member (30) includes a face (32, 34). The flowable medium is dispensed from the face (32, 34). The dispensing membrane (24, 40, 68, 72) is arranged on the face of the dispensing member for dispensing the flowable medium to at least one surface to be treated. The dispensing membrane has a plurality of unidirectional dispensing outlets (26, 46, 70, 74) operable between (a) a normally closed position and (b) an open position. The bristles (36) extend from the dispensing membrane and come into contact with the surface to be treated. The dispensing membrane responds only to the application of the differential pressure across the dispensing membrane above the threshold and selects the flowable medium through a plurality of unidirectional dispensing outlets open for supply of the fluid medium And (ii) in response to the differential pressure across the dispensing membrane below the threshold, the one-way dispensing outlet returns to the normally closed position to terminate the supply of fluid medium (62).流動性媒体分配装置(10)は、チャンバ(12)、分配部材(30)、分注膜(24,40,68,72)、及び毛(36)を有する。チャンバ(12)は、流動性媒体(62)を包含するように構成される。分配部材(30)は、面(32,34)を含む。流動性媒体は、面(32,34)から分注される。分注膜(24,40,68,72)は、処理対象の少なくとも一つの表面に流動性媒体を分注するために分配部材の面上に配置される。分注膜は、(a)常閉位置と(b)開位置との間で作動可能な複数の一方向式の分注出口(26,46,70,74)を有する。毛(36)は、分注膜から伸び、且つ、処理対象の表面と接触する。分注膜は、(i)閾値以上の分注膜を挟んだ差圧の印加のみに応答し、流動性媒体の供給のために開く複数の一方向式の分注出口を通じて流動性媒体を分注し、且つ、(ii)閾値より小さい分注膜を挟んだ差圧に応答し、一方向式の分注出口は、流動性媒体(62)の供給を終了させる常閉位置に戻る。
