| 摘要 |
<p>A printing press liquid circulation system including an anti-foaming device, the system being of the type wherein flow of liquid from a fountain pan (12) to a reservoir (22) is induced or suctioned through a return conduit (14) by connecting the return conduit to a suction inlet of an aspirator (15). In order to reduce or eliminate the tendency of the aspirator (15) to draw or suction air through the return conduit (14) and, thus reduce or eliminate foaming in the system, the suction pressure in the return conduit is controlled to eliminate the suctioning of air through the return conduit. </p> |
