Printhead for an inkjet printer, in particular coating print media

Abstract

Printhead for an inkjet printer, wherein the printhead comprises at least one ink supply channel and at least one nozzle with a nozzle channel and an inflow opening, wherein ink from the ink supply channel can be pressed through the inflow opening into the nozzle channel and ejected therefrom, wherein the nozzle is arranged in a stationary manner on a sidewall of the ink supply channel and the at least one nozzle is assigned a plunger having a plunger front face located in the ink supply channel opposite and spaced from the inflow opening, wherein the printhead comprises first means for moving the plunger front face in the ink supply channel between a reversal point (U1) minimally spaced from the inflow opening of the nozzle and a reversal point (U2) maximally spaced from the inflow opening of the nozzle, the first means limiting the movement of the plunger front face to a movement between the reversal points (U1, U2), and second means for applying a negative pressure to the ink in the ink supply channel relative to ambient air pressure, wherein at least one set of said nozzles is provided comprising the one nozzle, wherein a single plunger is assigned to all nozzles of the one set of nozzles.

Dependencies are inferred from the claim text.