Patent ID: 6081281
Filing Date: 2000-06-27
Classification: B41J

Abstract:
Apparatus for reproducing a predetermined pattern on a medium comprising in combinationa source of colored ink,a primary source of compressed air, anda spray head, said spray head comprising:a housing having an inner ink chamber in flow communication with said source of ink,an outer air chamber in flow communication with said source of air and surrounding said inner ink chamber,a spray nozzle having an outside diameter and an internal longitudinal bore connected to said inner ink chamber and extending forward of said housing,a spray shield having an outer surface adjacent said medium and an inner surface positioned adjacent to and spaced from said housing and having a transverse opening therethrough in alignment with said nozzle, andan auxiliary air supply having a pressure significantly less than the pressure of the air from said primary source of compressed air, said auxiliary air supply being in flow communication with the space between said shield and said housing thereby to force clean air through the space and out through said spray shield opening.