| 摘要 |
A liquid stream is caused to jet from a nozzle. A small or large drop waveform applied to a drop forming mechanism causes the liquid stream to break up into a small or large volume drop, respectively. The small drop waveform includes a pulse having a width wS, and a period x, where x≈1/fR, where fR is the Rayleigh frequency of the liquid. The large drop waveform includes a period Nx, with the large volume drop being N times the small volume drop. The large drop waveform includes a first pulse having a pulse width wL1, where wL1>=wS, and a second pulse occurring within a period of (fR/fC)x of an initial pulse of a subsequent small or large drop waveform, where fC is the cut off frequency of the liquid. The second pulse includes a pulse width wL2, where wL2<wS. |
