Abstract: A heat-sensitive positive-working lithographic printing plate precursor comprising (1) a support having a hydrophilic surface or which is provided with a hydrophilic layer, (2) a heat-sensitive coating, comprising an underlayer on said support and thereon an upperlayer, an IR absorbing agent in at least one of said underlayer and upperlayer, a phenolic resin in said upperlayer, and a first polymer in said underlayer, characterised in that said first polymer is an alkaline soluble polymer comprising a first sulfonamide containing monomeric unit having a specified structure according to formula I or formula II and a second amide containing monomeric unit having a specified structure according to formula III. The printing plates show an improved chemical resistance of the coating and a reduced undercutting of the image forming parts of the coating.

Abstract: A radiation curable composition comprising a curable compound, a photo-initiator and a co-initiator, characterized in that said co-initiator is a oligomer or polymer having a repeating unit, said repeating unit comprising at least two tertiary amines, and said polymer being prepared by the polycondensation of di- or oligofunctional Michael acceptors with mono- or oligofunctional aliphatic primary amines or with di- or oligofunctional aliphatic secondary amines or with a mixture thereof.

Abstract: A radiation curable composition comprising a curable compound, a photo-initiator and a co-initiator characterized in that said co-initiator is represented by Formula (I), wherein MA is the residue of a mono- or oligofunctional Michael acceptor; L is a divalent linking group positioning the two tertiary amines in a 1-3 to 1-10 position, with the proviso that both amines are aliphatic; R1, R2 and R3 independently represent an optionally substituted alkyl group, an optionally substituted alkenyl group, an optionally substituted alkynyl group or an optionally substituted (hetero) alkaryl group; any two of R1, R2 and R3 may represent the necessary atoms to form a ring; any two of R1, R2 and R3 may represent the necessary atoms to form a ring with any of the atoms of the linking group L; n is an integer ranging from 1 to 6.

Abstract: A heat-sensitive negative-working lithographic printing plate precursor comprising: a support having a hydrophilic surface or which is provided with a hydrophilic layer; and an image-recording layer comprising hydrophobic thermoplastic polymer particles, an infrared light absorbing dye and a dye; wherein said dye has a specified structure and a most bathochromic light absorption peak between 451 nm and 750 nm.

Abstract: A method for manufacturing a pigmented ink includes the steps of a) preparing a pigment dispersion in a dispersing installation; b) charging the dispersing installation with a washing liquid; c) discharging the washing liquid from the dispersing installation; and d) adding the discharged washing liquid to the pigment dispersion.

Abstract: A non-aqueous pigment dispersion including a diketopyrrolo-pyrrole pigment, a polymeric dispersant, and a dispersion synergist in a dispersion medium wherein the dispersion synergist is a quinacridone derivative containing at least one acidic group or a salt thereof.

Abstract: A non-aqueous pigment dispersion includes a diketopyrrolo-pyrrole pigment, a polymeric dispersant, and a dispersion synergist in a dispersion medium wherein the dispersion synergist is a quinacridone derivative containing at least one acid group or a salt thereof.

Abstract: A non-aqueous inkjet ink includes a quinacridone pigment and a dispersion synergist wherein the quinacridone pigment is a mixed crystal including a dimethyl substituted quinacridone and a monomethyl substituted quinacridone and the dispersion synergist includes at least one acid group.

Abstract: A 3D-inkjet printing method includes the steps of a) providing two or more fluids having a different composition to an inkjet printer; b) mixing the two or more fluids in a controlled amount; c) jetting the mixture of the two or more fluids with the inkjet printer onto a support; d) at least partially curing the jetted mixture by actinic radiation or electron beam; and e) repeating steps b) to d) in order to build a 3D-relief on the support. The method is capable of printing 3D-objects with inkjet fluid sets in an inkjet printer.

Abstract: A radiation curable composition comprising a curable compound, a photo-initiator and a co-initiator, wherein said co-initiator has a structure according to Formula I A-L-B ??Formula I wherein A represents a structural moiety comprising an aromatic tertiary amine; B represents a structural moiety comprising at least one aliphatic tertiary amine; L represents a divalent linking group positioning the nitrogen atom of the aromatic amine of the structural moiety A and the nitrogen of at least one aliphatic amine of the structural moiety B in a 1-3 to 1-23 position; with the proviso that at least one aromatic and at least one aliphatic amine each have at least one alfa-hydrogen.

Abstract: The present invention relates to an improved process for wet-on-wet ink-jet printing. This invention provides a progressive dot printing ink-jet process comprising the steps of applying a first ink drop to a substrate and subsequently applying a second ink drop on to the first ink drop without intermediate solidification of the first ink drop. The first and second ink drops have a different viscosity, surface tension or curing speed. Further ink drops may be applied sequentially to the combined first and second ink drops without intermediate solidification of the first and subsequent ink drops.

Abstract: A color pigment containing, based upon the total weight of the pigment, at least 70.0 weight % of a first compound COP according to Formula (I): wherein one of R1 and R2 is hydrogen and the other one of R1 and R2 represents —COOR4; R4 and R5 represent methyl; R3 is selected from the group consisting of: with C* representing the point of attachment of R3 to the nitrogen in Formula (I); and having a pigment surface including between 2.0 and 30.0 weight %, based upon the total weight of the pigment of a second compound according to Formula (I), wherein —R1, R2?, R3, R4 and R5 have the same meaning as above with the exception that at least one of R4 and R5 represents hydrogen. Also, methods of preparation of the pigment and non-aqueous pigment dispersions.

Abstract: A non-aqueous pigment dispersion includes a diketopyrrolo-pyrrole pigment, a polymeric dispersant, and a dispersion synergist in a non-aqueous dispersion medium wherein the dispersion synergist is a diketopyrrolo-pyrrole derivative according to Formula (I): wherein R1, R2, and R3, are independently selected from the group consisting of hydrogen, a halogen atom, a methyl group, an ethyl group, an tert.-butyl group, a phenyl group, a cyano group, and an acid group; R4-, R5, and R6 are independently selected from the group consisting of hydrogen, a halogen atom, a methyl group, an ethyl group, an tert.-butyl group, a phenyl group, and a cyano group; and wherein one of R7 and R8 is a group including two acid functions while the other one of R7 and R8 represents hydrogen.

Abstract: A non-aqueous inkjet ink include a pigment and a mixture of at least two polyalkyleneglycol dialkylethers represented by Formula (I): wherein, R1 and R2 are each independently selected from an alkyl group having 1 to 4 carbon atoms; Y represents an ethylene group or a propylene group; wherein n is an integer selected from 4 to 20 for a first polyalkyleneglycol dialkylether; and n is an integer selected from 5 to 20 for a second polyalkyleneglycol dialkylether. A method for preparing a non-aqueous inkjet ink is also provided.

Abstract: A method for obtaining a first representation of a digital image by means of a first output device and a second representation of the digital image by means of a second output device, wherein the first output device has a first, device dependent, colorant space and the second output device has a second, device dependent, colorant space, the method including (a) determining a transformation for transforming a set of colorant values of a pixel of the digital image from the first to the second colorant space; (b) selecting a particular set of colorant values in the first colorant space; and (c) modifying the transformation for the particular set of colorant values.

Abstract: A method for making a dot for dot proof for a printing device, such as a press, on another device, such as a proofer, the method including (a) inputting, at pixel level, binary or pseudo-binary data indicating at a given pixel screened colorant values of the printing device; (b) inputting contone colorant values of the printing device indicating a color in a neighborhood of the given pixel; (c) outputting colorant values for the other device at the given pixel, based on the input contone colorant values and on the input binary or pseudo-binary data, such that a color match is obtained with a given color behavior of the printing device.

Abstract: A job control system for a document processing system wherein a number of tasks is performed in a workflow includes a user interface to define or change parameters. The job control system includes an identifier to identify and mark dependencies of one or more intermediate and/or final results to parameters. This enables a verifier, also part of the job control system, to verify, during execution of the job, a change in parameter and to determine whether or not an intermediate and/or final result obtained before the change in parameter is still useable despite the occurred change in parameter. The job control system furthermore includes a memory for storing the usable intermediate and/or final results. This enables, in case a parameter is changed, to use those results that are still useable, thus saving time.

Abstract: A method and apparatus for creating a print file for printing a 3-D print using a 3-D printing system is described, the 3-D print comprising a plurality of 3-D structures printed on a substrate, each 3-D print structure having a height with respect to the substrate. A two-dimensional source image is input comprising a plurality of image pixel areas. A filtered image is obtained by applying a topographic operator to the source image to generate for every image pixel a representation of a pixel height profile, the pixel height profile corresponding to cross-sections through a 3-D print structure which is to be formed by 3-D printing. Thereby definitions of a plurality of image layers are generated from the filtered image for printing using the 3-D printing system. The print file is output based on the plurality of image layers.

Abstract: A quinacridone derivative according to Formula (I): wherein R1 and R2 are each independently selected from the group consisting of hydrogen, alkyl, and halogen. Also, methods for preparing non-aqueous pigment dispersions and inkjet inks including a pigment and the quinacridone derivative of Formula (I).

Abstract: A pigment dispersion includes a color pigment represented by formula (I): wherein R1 to R10 are independently selected from the group consisting of hydrogen, a halogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group, —CF3, —COOH, —COOCH3, —SO2NH—C6H5, —CONH—C6H5, —CONH—C6H5—CONH2, and —CONH2; and a polymeric dispersant, having via a linking group covalently linked to its polymeric backbone, at least one pending chromophore group which has a molecular weight smaller than 95% of the molecular weight of said color pigment. The pigment dispersion can be advantageously used in inkjet inks.