Print head of an ink jet printer with 2 gutters for recovery, of which one is mobile

A print head of a continuous ink jet printer comprising: a cavity for the circulation of jets, at least one nozzle for producing at least one ink jet or solvent in the cavity, at least one electrode for sorting drops or segments of one or several of the jets intended for printing from drops or segments that are not used for printing, an outlet slot of the cavity, open onto the exterior of the cavity and allowing the exiting of the drops or segments of ink intended for printing, a 1st gutter for recovering drops or segments not intended for printing, a 2nd gutter for recovering drops or segments that are not deflected and not intended for printing, this 2nd gutter being mobile and comprising an input slot and at least one suction channel, a motor, to actuate the 2nd gutter for recovering in movement between a retracted position, in which it does not close off the outlet slot of the cavity, and a closed position, in which its input slot faces the outlet slot of the cavity; a seal between the print head and the 2nd gutter for recovering in the closed position of the latter.