Dyeing and printing of materials

Apparatus for applying dyestuff to a moving material to dye the same including means for conveying the material in a predetermined path of travel, a dye jet gun bar having a row of dye-emitting orifices extending across the path of travel, means for supplying dye to the gun bar and orifices to direct the dye in plural streams toward the moving material to be dyed, gaseous fluid discharge means having a row of gaseous fluid discharge orifices positioned on one side of said row of dye-emitting orifices with the discharge axis of each of said gaseous fluid discharge orifices intersecting the discharge axis of a respective dye-emitting orifice for selectively directing streams of gaseous fluid against the streams of dye to deflect the same away from the path of travel of the material, and dye collection and separation means including a dye collection and separation chamber having an elongate opening extending along the gun bar on the opposite side of the dye-emitting orifices from said gaseous fluid discharge orifices for receiving the deflected dye and gaseous fluid therein, said collection and separation means including an elongate wall defining one side of said opening, said wall having a curved surface extending from approximately tangent to the discharge axes of said gaseous fluid discharge orifices adjacent said opening and diverging progressively inwardly of said chamber from said opening and away from said axes of the gaseous fluid discharge orifices to facilitate separation of gaseous fluid from liquid dye being deflected into the said chamber.