FIELD: printing equipment; high-speed jet printing machines. SUBSTANCE: printing ink is discharged due to dynamic change in radius of curvature of printing ink-working medium interface separating zone of temperature action with working medium and printing ink chamber. Interface fully closes passage of nozzle and opens it when it is necessary to fill printing ink chamber. Cooling of zone of temperature action is performed taking into account ambient temperature and atmospheric pressure. EFFECT: facilitated procedure; improved quality of printing; increased temperature range of printing head. 2 cl, 2 dwg
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