Abstract: The ink set of this invention comprises at least two inks, one of which contains a pH sensitive polymer and pigment colorant with dispersant. A second ink is provided which comprises incompatible inorganic or organic salts or has an appropriate pH. The polymer precipitates onto a medium upon contact with the second ink, thereby providing improved bleed control.

Abstract: A borderless inkjet printer includes a hollow open end platen having a block of ink absorbent material disposed there within and exposed to a plurality of inkjet cartridges. A front set and a rear set of upstanding cockle ribs extend upwardly from the platen a sufficient distance to substantially prevent either a leading edge and a trailing edge of a sheet of print medium travel across a print zone within the printer from making contact with the absorbent material. A print engine having at least one print head travels in a rectilinear path above the print zone to eject ink droplets onto edge portions of the print medium to provide a borderless print image thereon.

Abstract: A flow conditioning system includes a flow randomizing section for receiving an input fluid stream and for increasing the uniformity of the streamwise velocity components of the input fluid stream while randomizing the non-streamwise velocity components, so as to provide a randomized fluid stream; a flow expansion section for receiving the randomized fluid stream and damping the non-streamwise velocity components therein, so as to provide a damped fluid stream; and a flow straightening section for receiving the damped fluid stream and for dividing the damped fluid stream into multiple, parallel output substreams so as to provide a laminar flow profile in an output fluid stream.