| 摘要 |
<p>1531738 Ink drop printers A B DICK CO 31 Oct 1975 [1 Nov 1974] 45403/75 Heading B6F In ink drop printing apparatus, ink is supplied to a nozzle which is vibrated at a predetermined frequency by an electro-mechanical transducer, .the nozzle having a mechanical resonance frequency at least 1À5 times higher than the predetermined frequency. A relatively uniform voltage requirement over a range of operating frequencies is obtained.</p> |
