Abstract: An apparatus for double-sided high-speed printing on a continuous sheet of printable material having a first guide, a second guide, a third guide, and a fourth guide providing a first print area between the first and second guides for printing on a first side of the material and a second print area between the third and fourth guides for printing on a second side of the material. A first plurality of print heads print in the first print area and a second plurality of print heads print in the second print area. The first and second plurality of print heads all fire in a same direction. Bends in the material provided by the guides permit a compact arrangement that eliminates flutter of the material in the print areas.

Abstract: An apparatus adapted to house page-wide arrays (PWAs) of print heads in a printing apparatus comprises a plurality of support structures each housing a PWA. Each PWA comprises a linear array of print nozzles in a lateral direction. The structures are stacked in a vertical array and are each attached to a wall structure at a closed lateral end of the structure. Opposite the closed end, each structure has an open end for lateral insertion and removal of the corresponding PWA. Between the open and closed ends, each structure has an opening in a front face through which the array of nozzles in the corresponding PWA may operate while housed in the structure. An adjustable protrusion extends within each structure from the closed end, whereby the lateral position of the corresponding PWA may be fixed relative to the closed end of the structure and the wall structure.

Abstract: An apparatus and method distributing data for high-speed digital printing on a printable material, includes a printer processor for receiving preflighted image data in a vector-oriented page description language, separating the color image data into a plurality of monochrome image data sets, and distributing the monochrome image data sets to respective print heads. Each print head raster image processes the monochrome images into bitmap images for printing on the printable material. A computational complexity of ripping the monochrome image data sets is reduced by preflighting, and distributed over the plurality of print heads to enable high speed printing.

Abstract: The invention relates to an apparatus for generating proofs of print signatures composed of first and second flats printed on opposite sides of a sheet comprises first and second digital printing units; a feeder mechanism for feeding a substrate having opposite sides to the first printing unit; a first input for feeding to the first printing unit digital data representative of an image of the first flat to imprint one side of the substrate with the image of the first flat; a marker for providing the substrate with a registration mark at a predetermined location on the substrate; a conveyor for conveying the imprinted substrate from the first printing unit to the second printing unit and feeding same thereto; and a mark sensor for detecting the location of the registration mark on the substrate and causing actuation of the second printing unit.

Abstract: The invention relates to a method of generating proofs of print signatures composed of first and second flats printed on opposite sides of a sheet.