Abstract: A primer composition to improve ink acceptability of polymeric surfaces. The primer composition includes a first polymeric binder component A having a first polar contribution pc1 less than 20%; and a second component B comprising an inorganic particle B? and/or a second polymeric binder component B?. The polymeric binder component B? has a second polar contribution pc2 equal or higher than 20%. The amounts of A, B? and/or B?, based on the dry weight of the composition, are as such that when present B?/(A+B?+B?) is smaller than 15%. The first polar contribution pc1 and second polar contribution pc2 are determined by using the Owens-Wendt-Rabel-Kaelble method with a 6 gsm dry layer of components A and B respectively.

Abstract: An inkjet printing process and an ink set for forming an image on a substrate by applying a plurality of inkjet inks of the ink set on the substrate. The plurality of inkjet inks include at least a first ink and a second ink, each ink comprising: a pigment and a block copolymer dispersant for dispersing the pigment. The block copolymer dispersant includes a first block and a second block where the second block is formed using at least one monomer M2, which monomer M2 is selected from the group consisting of a methacrylate and an acrylate, and where the monomer M2 is an anchoring monomer for anchoring to the pigment.

Abstract: A digital printing process for inkjet printing on a recording medium using ink including a carrier liquid and a colorant, in particular on a recording medium which is configured not to absorb the carrier liquid or to absorb only a portion of the carrier liquid during the inkjet printing. The process includes the steps of: jetting ink on the recording medium; bringing one or more continuously rotating members in rotational contact with the jetted ink on the recording medium such that a colorant-poor portion of the ink is adsorbed to the one or more rotating members and a colorant-rich portion remains on the recording medium. The colorant-rich portion includes more colorant than said colorant-poor portion. The process further includes continuously removing said colorant-poor portion of the one or more continuously rotating members.

Abstract: A flexographic printing plate includes at least one halftone printing area with a plurality of halftone dots. A halftone dot of said plurality of halftone dots is shaped as a relief area. Said relief area includes a central portion and a surrounding portion. Said central portion has a central dot floor with a first pattern of a plurality of pins protruding upwardly from the central dot floor. Said surrounding portion protrudes upwardly from the central dot floor and has a top side including a second pattern of a plurality of recesses. The first pattern and second pattern are such that the surrounding portion can be distinguished from the central portion.

Abstract: The ink composition comprises pigment particles and a stimulus responsive dispersing agent for dispersing said pigment particles in a protic polar solvent, for instance for inkjet printing, which stimulus responsive dispersing agent comprises an anchoring part for anchoring to said pigment particles, a stimulus responsive part as shown in formula (XXa) or (XXb) and a hydrophilic part for solvent stabilization of the pigment, wherein the stimulus responsive part upon exposure to a stimulus initiates decomposition of the stimulus responsive dispersing agent. The paper with the printed ink can be deinked in an industrial deinking process.

Abstract: Inkjet ink for forming an image on a substrate, the inkjet ink comprising a pigment P, a first block copolymer dispersant D1 for dispersing the pigment P and a second block copolymer dispersant D2 for dispersing the pigment P, and an aqueous carrier; wherein said first block copolymer dispersant D1 is different from said second block copolymer dispersant D2, wherein each block copolymer dispersant D1, D2 comprises an anchoring segment A1, A2 for anchoring to the pigment P, wherein each of the block copolymer dispersant D1, D2 additionally comprises a matrix stabilization segment M for aqueous phase stabilization of the pigment P, wherein the anchoring segment A1 of the first block copolymer dispersant D1 comprises a repeating unit R1 and the anchoring segment A2 of the second block copolymer dispersant D2 comprises a repeating unit R2, wherein the repeating unit R1 is less hydrophobic than the repeating unit R2.

Abstract: A printing apparatus includes a cooling system for cooling a print medium. The cooling system includes a cooling member with a support surface configured for supporting the print medium. The cooling member has a first end and a second end and the support surface extends in a lateral direction between the first end and the second end. The cooling member is provided with supply channels and return channels extending between the first and the second end. A fluid circulation means supplies fluid through the supply channels from the first end to the second end, and back through the return channels from the second end to the first end.

Abstract: Inkjet ink for forming an image on a substrate includes a pigment P, a block copolymer dispersant D for dispersing the pigment P, and an aqueous carrier. The block copolymer dispersant D includes an anchoring segment A for anchoring to the pigment P, where the block copolymer dispersant additionally comprises a matrix stabilization segment M for aqueous phase stabilization of the pigment. The anchoring segment A includes a repeating unit R1 and a repeating unit R2, different from R1, where the repeating unit R1 is less hydrophobic than the repeating unit R2, the repeating unit R1 includes a (poly)alkylene oxide coupled to a terminal group via a direct bond, a —C—O—C— ether bond or a —C—O—(C?O)—N— urethane bond, and the terminal group is selected from an alkyl group, an aryl group and combinations thereof.

Abstract: A method for processing a raster image file, said method comprising the steps: receiving of a raster image file comprising image data for a plurality of pixels, analyzing the image data of the raster image file, determining control data, and optionally at least one new raster image file, based on the analyzed image data, said control data being data for controlling settings of an imaging device so as to change the physical properties of generated imaged features corresponding with one or more of the plurality of pixels; outputting the raster image file and/or the new raster image file, with the control data to an imaging device for imaging a relief precursor.

Abstract: An inkjet printing apparatus for printing on a substrate, such as a flexible packaging material, includes at least three inkjet heads including a first inkjet head, a second inkjet head, and at least one further inkjet head. At least one drying unit includes a first drying unit arranged opposite a first drying location which is located between the first and second inkjet location, the first drying unit being configured for physically removing liquid from ink applied by the first inkjet head. At least a first drum and a second drum, where the first and second inkjet locations as well as the first drying location are located on an outer surface of the first drum; and the at least one further inkjet location is located on an outer surface of the second drum.

Abstract: A digital printing process for printing an image (I) including a white area (W) and/or a coloured area (C) on a packaging material includes selecting a packaging material with a substantially white side, and preparing print data to be sent to a printing means taking into account that the side of the packaging material is substantially white. The print data represents one or more first image areas (A1) representing the image (I), and one or more second image areas (A2) representing a packaging look (L), to be printed on the substantially white side of the packaging material, outside the one or more first image areas (A1) where the image (I) is to be located. The method further includes printing by the printing means on the substantially white side of the packaging material using the print data.

Abstract: A method for printing a plurality of scan lines with one or more inkjet heads includes receiving at least one scanline; creating, from pixels of said at least one scanline, a plurality of bundles of a predetermined size comprising first bundles and consecutive bundles, said first and consecutive bundles comprising pixels for which nozzles of the one or more inkjet heads have to be fired within a first time period and within a consecutive time period, respectively; and storing said plurality of bundles in a first memory. The method includes transferring said plurality of bundles from first memory to second memory; and repeating until all said pixels are available in the second memory as the first bundles. Nozzles of the one or more inkjet heads are fired in accordance with the first bundles within the first time period and steps repeated for consecutive bundles and associated respective consecutive time periods.

Abstract: An inkjet printing process and an ink set for forming an image on a substrate by applying a plurality of inkjet inks of the ink set on the substrate. The plurality of inkjet inks include at least a first ink and a second ink, each ink comprising: a pigment and a block copolymer dispersant for dispersing the pigment. The block copolymer dispersant includes a first block and a second block where the second block is formed using at least one monomer M2, which monomer M2 is selected from the group consisting of a methacrylate and an acrylate, and where the monomer M2 is an anchoring monomer for anchoring to the pigment.

Abstract: A method for printing at least a first and a later print job includes receiving a first print job containing first image data of one or more first images to be printed in a printable area and a later print job containing later image data associated with a colour, determining a first sub-area of said printable area where no image of the first images is to be printed, using the first image data; printing the one or more first images in the printable area and at least one first control patch in the first sub-area, using for said at least one first control patch at least one colour representative for the colour associated with the later image data, measuring the colour of the printed at least one first control patch, and using the measured colour of the at least one first control patch for controlling the later print job.

Abstract: A digital printing process for printing an image (I) including a white area (W) and/or a coloured area (C) on a packaging material includes selecting a packaging material with a substantially white side, and preparing print data to be sent to a printing means taking into account that the side of the packaging material is substantially white. The print data represents one or more first image areas (A1) representing the image (I), and one or more second image areas (A2) representing a packaging look (L), to be printed on the substantially white side of the packaging material, outside the one or more first image areas (A1) where the image (I) is to be located. The method further includes printing by the printing means on the substantially white side of the packaging material using the print data.

Abstract: A metal compound includes a metal and at least two aromatic hydroxycarboxylic acid structures. Each aromatic hydroxycarboxylic acid structure includes an aromatic moiety having a hydroxyl substituent and a carboxylic acid substituent, which cooperatively bond the aromatic moiety to the metal via at least one of ionic bond, covalent bond and coordinate bond. Each aromatic hydroxycarboxylic acid structure is bonded to a polymer segment.

Abstract: A printing apparatus includes a heat transfer system for transferring heat away from or to a print medium moving in a movement direction through the printing apparatus. The heat transfer system includes a heat transfer member with a rotatable support surface configured for supporting the print medium. The heat transfer member is provided with at least one channel. The support surface is rotatable around an axis in order to move the print medium in the movement direction. A fluid circulation means is configured for supplying a fluid through said at least one channel. The at least one channel is configured such that, in operation, when fluid is supplied through said at least one channel, torque is generated in a fluido-mechanical manner around said axis, contributing to a rotational movement of the support surface of the heat transfer member.

Abstract: A method for fixing and treating a flexible plate on a drum includes: providing a flexible plate comprising a support layer made of a first material and at least one additional layer made of a second material which is different from the first material, wherein one or more thin film side wings are connected to one or more sides of the flexible plate. The one or more thin film side wings have a thickness which is at least 5 times smaller than the thickness of the flexible plate. The method further includes positioning the flexible plate on the drum such that the lower face of each thin film side wing of the flexible plate covers at least one vacuum suction opening, and performing a treatment on at least one layer of the flexible plate while rotating the drum.

Abstract: A punching station for arranging one or more penetration elements in or through an edge portion of a relief plate precursor or for arranging one or more perforations in the edge portion. The punching station includes a punching means comprising one or more penetration elements or perforating elements, the punching means configured for arranging the one or more penetration elements or perforating elements through or in an edge portion of the relief plate precursor. An abutment means is aligned with the punching means and configured for forming an abutment for the edge of the relief plate precursor. A detection means is configured to detect at two or more locations along the abutment means whether the edge portion of the relief plate precursor is correctly positioned against the abutment means. A signalling means is configured to communicate a signal in function of the detection by the detection means.

Abstract: A printing method in which a primer composition, which includes at least one pigment aggregating agent, is applied to a coated substrate prior to an ink-jet printing step. The ink-jet printing step is performed using inkjet droplets having x ?m drop diameter, printed in a print resolution on the coated substrate that corresponds to a rectangular unit cell having cell dimensions of y ?m by z ?m, where a ratio of x/y is >0.60.