| 摘要 |
<p>Air bubbles entrapped within the cells (72) of an engraved applicator roller (58) are displaced from the cells by wiping the engraved surface (60) of applicator roller with the bristles of a brush (106). As the engraved applicator roller (58) rotates in contact with the liquid coating material in the doctor blade reservoir (82), the bristles of the brush (106) puncture the entrapped air bubbles and sweep the entrapped air away from the cells. The elongated brush (106), which extends from one end of the doctor blade head (88) to the other, blocks the transfer of dispersed air bubbles from the liquid material in the upper reservoir chamber (102B) above the brush to the lower reservoir chamber (102A) below the brush where the cells are being filled with the liquid coating material. <IMAGE></p> |
