| 摘要 |
<p>Elapsed time from turn-on of a fluid light valve to the time when the initial, turbulent fluid has settled to a quiescent condition on which a noise free image may be inscribed by an electron beam is reduced by expanding vertical sweep size of the roaster, expanding horizontal sweep size of the raster, or reducing electron beam current. These operations, which may be controlled individually or in combination during the turn-on period, sweep out excess fluid from the raster area to ensure that fluid depth is adjusted to less than critical depth over the entire desired raster area ? as to establish a smooth and uniform fluid surface by the time the turn-on sequence has been completed.</p> |
