| 摘要 |
<p>The present invention provides a fluid applicator head (10, 101) in which fluid is to be ejected through a plurality of nozzle orifices (17, 109) notably by means of pressure pulses or by means of valve means (16, 104) which control the flow of fluid through the nozzle orifices, which applicator head can be flushed out by passing a flushing fluid through the nozzle orifices, characterised in that the applicator head is adapted to be moved from a first, operative position at which it can apply droplets of a fluid to a substrate opposed to the nozzle orifices, to a second, flushing position at which the nozzle orifices engage with a flushing member (13, 120) incorporating fluid flow conduits (51, 52, 53, 121, 122), whereby flushing fluid can be caused to flow through the nozzle orifices (17, 109) or through conduits (20, 21, 22, 108) associated therewith. The invention also provides a method for applying a fluid in droplet form to a substrate which comprises using an applicator of the invention and moving the applicator head from its operative position to its flushing position and passing a flushing fluid through the nozzle orifices when it is desired to flush out the applicator head.</p> |
