FIELD: printing systems. SUBSTANCE: apparatus for ejection of liquid matter includes ejection position with electrode. Electric potential is applied to ejection-position electrode in order to provide electric field in said position. Then liquid is fed to ejection position. Liquid contains matter in the form of particles subjected to ejection in ejection position. Second electrode is placed near ejection position. Voltage of ejection position may be controlled in such a way that to decrease head sensitivity to influence of outer electric fields. EFFECT: improved design. 12 cl, 7 dwg
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