Abstract: A continuous printhead drop deflector system includes a gas flow duct including a wall, the wall including a porous member having pores through which liquid can flow and a liquid flow channel, the flow channel being separated from the air flow duct by the porous member, the flow channel includes; a first port for extracting liquid from a first portion of the liquid flow channel; a second port for supplying liquid to a second portion of the liquid flow channel; one or more paths in the liquid channel permitting fluid to flow from the second portion to the first portion; wherein liquid, supplied through the second port to the second portion of the liquid channel and through the one or more paths to the first portion of the liquid channel, contacts and wicks into the porous member before being extracted through the first port.

Abstract: A continuous printhead drop deflector system includes a gas flow duct including a wall, the wall including a porous member having pores through which liquid can flow and a liquid flow channel, the flow channel being separated from the air flow duct by the porous member, the flow channel includes; a first port for extracting liquid from a first portion of the liquid flow channel; a second port for supplying liquid to a second portion of the liquid flow channel; one or more paths in the liquid channel permitting fluid to flow from the second portion to the first portion; wherein liquid, supplied through the second port to the second portion of the liquid channel and through the one or more paths to the first portion of the liquid channel, contacts and wicks into the porous member before being extracted through the first port.

Abstract: A method of printing an image with a continuous inkjet printer system employing a jetting module including a nozzle in fluid communication with a liquid ink source and a catcher including a liquid drop contact face; wherein the liquid ink is an aqueous inkjet black ink comprising a black colorant and at least one surfactant selected to provide a 10-ms dynamic surface tension of less than 54 mN/m. Full color images may be printed by further employing at least second, third and fourth jetting modules and yellow, magenta and cyan inks each also comprising a surfactant selected to provide a 10-ms dynamic surface tension of less than 54 mN/m for each ink. The ink compositions provide for fluid properties on the drop catcher face that minimize printing defects that can occur during drop deflection during the printing of high dynamic range images at high speed.

Abstract: An aqueous inkjet ink set for use in continuous inkjet printing comprising at least one cyan ink, at least one yellow ink, at least one magenta ink, and at least one black ink, wherein each ink of the ink set comprises dispersed pigment particles and at least one surfactant selected to provide a 10-ms dynamic surface tension of less than 54 mN/m for each ink. The invention relates to continuous ink jet printing of aqueous pigmented ink compositions recycled from main ink supply reservoirs, employing a printer with drop ejectors and a drop deflector and non-printing drop catchers capable of returning unprinted ink to the fluid delivery systems following the capture of non-printing drops. The pigmented ink jet ink compositions provide for particularly suitable fluid properties on the drop catcher face that minimize printing defects that can occur during drop deflection during the printing of high dynamic range images at high speed.

Abstract: An aqueous inkjet black ink composition for use in continuous ink jet printing is provided comprising black pigment particles dispersed with a polymeric dispersant or self dispersing pigment particles without the need for a dispersant; and at least one surfactant, wherein the at least one surfactant is selected to provide the ink composition with a 10-ms dynamic surface tension of less than 54 mN/m. The invention relates to continuous ink jet printing of an aqueous pigmented ink composition recycled from a main ink supply reservoir, employing a printer with a drop ejector and a drop deflector and a non-printing drop catcher capable of returning unprinted ink to the fluid delivery system following the capture of non-printing drops. The pigmented ink jet ink compositions provide for particularly suitable fluid properties on the drop catcher face that minimize printing defects that can occur during drop deflection during the printing of high dynamic range images at high speed.

Abstract: A method of printing an image with a continuous inkjet printer system employing a jetting module including a nozzle in fluid communication with a liquid ink source and a catcher including a liquid drop contact face; wherein the liquid ink is an aqueous inkjet black ink comprising a black colorant and at least one surfactant selected to provide a 10-ms dynamic surface tension of less than 54 mN/m. Full color images may be printed by further employing at least second, third and fourth jetting modules and yellow, magenta and cyan inks each also comprising a surfactant selected to provide a 10-ms dynamic surface tension of less than 54 mN/m for each ink. The ink compositions provide for fluid properties on the drop catcher face that minimize printing defects that can occur during drop deflection during the printing of high dynamic range images at high speed.

Abstract: An aqueous inkjet ink set for use in continuous inkjet printing comprising at least one cyan ink, at least one yellow ink, at least one magenta ink, and at least one black ink, wherein each ink of the ink set comprises dispersed pigment particles and at least one surfactant selected to provide a 10-ms dynamic surface tension of less than 54 mN/m for each ink. The invention relates to continuous ink jet printing of aqueous pigmented ink compositions recycled from main ink supply reservoirs, employing a printer with drop ejectors and a drop deflector and non-printing drop catchers capable of returning unprinted ink to the fluid delivery systems following the capture of non-printing drops. The pigmented ink jet ink compositions provide for particularly suitable fluid properties on the drop catcher face that minimize printing defects that can occur during drop deflection during the printing of high dynamic range images at high speed.

Abstract: An aqueous inkjet black ink composition for use in continuous ink jet printing is provided comprising black pigment particles dispersed with a polymeric dispersant or self dispersing pigment particles without the need for a dispersant; and at least one surfactant, wherein the at least one surfactant is selected to provide the ink composition with a 10-ms dynamic surface tension of less than 54 mN/m. The invention relates to continuous ink jet printing of an aqueous pigmented ink composition recycled from a main ink supply reservoir, employing a printer with a drop ejector and a drop deflector and a non-printing drop catcher capable of returning unprinted ink to the fluid delivery system following the capture of non-printing drops. The pigmented ink jet ink compositions provide for particularly suitable fluid properties on the drop catcher face that minimize printing defects that can occur during drop deflection during the printing of high dynamic range images at high speed.

Abstract: A drop generator operable to selectively form a drop having a first size and a drop having a second size from liquid emitted through a nozzle associated with the drop generator. The drop having the first size and the drop having the second size travel along a drop trajectory with the first size being larger than the second size when compared to each other. Each of the drops has a drop velocity. A gas flow deflection system includes a gas flow that is directed at a deflection zone that comprises at least a portion of the drop trajectory. The gas flow in the deflection zone includes a velocity vector having a parallel velocity component and a perpendicular velocity component with the parallel velocity component and the perpendicular velocity component being defined relative to the drop trajectory.

Abstract: A drop generator operable to selectively form a drop having a first size and a drop having a second size from liquid emitted through a nozzle associated with the drop generator. The drop having the first size and the drop having the second size travel along a drop trajectory with the first size being larger than the second size when compared to each other. Each of the drops has a drop velocity. A gas flow deflection system includes a gas flow that is directed at a deflection zone that comprises at least a portion of the drop trajectory. The gas flow in the deflection zone includes a velocity vector having a parallel velocity component and a perpendicular velocity component with the parallel velocity component and the perpendicular velocity component being defined relative to the drop trajectory.