Print head for an ink jet printer

A print head (1) for an ink jet printer, the print head (1) comprising at least one ink supply channel (2) and at least one nozzle (3) with a nozzle channel and inflow opening (5), ink being pressed through the inflow opening (5) from the ink supply channel (2) into the nozzle channel and ejected from the latter, the nozzle (3) being arranged in a stationary manner on a side wall (4) of the ink supply channel (2) and a ram (6) is assigned to the at least one nozzle (3) with a ram end face (9) in the ink supply channel (2) which ram end face is spaced apart opposite the inflow opening (5), the print head (1) comprising first means for moving the ram end face (9) in the ink supply channel (2) between a reversal point (U1) that has a minimum distance from the inflow opening (5) of the nozzle (3) and a reversal point (U2) that has a maximum distance from the inflow opening (5) of the nozzle (3), wherein the first means delimit the movement of the ram end face (9) to a movement between the reversal points (U1,U2) and second means are provided for pressurizing the ink in the ink supply channel (2) with a negative pressure relative to the environmental air pressure.