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: 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 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: 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: 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: 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: The polymeric dispersant is a copolymer obtainable by copolymerizing at least a first monomer chosen from a maleimide compound and maleic anhydride, and a second monomer being an ethylenically unsaturated monomer and in case of maleic anhydride, conversion of resulting maleic anhydride units to N-substituted maleimide units, wherein the first monomer comprises a first substituent having a substantially non-polar chain and wherein the second monomer comprises a second, more polar substituent. In one embodiment of the copolymerisation method, first and second monomers are used with copolymerisation parameters r1, r2, such that r1 and r2?0.5. This results in an at least moderately alternating copolymer. The conversion of maleic anhydride units to maleimide may be partial, for instance at least 10%. The polymeric dispersant can be used in an ink dispersion further comprising colorant particles and an aqueous and/or alcoholic carrier liquid.

Abstract: A digital printing apparatus using liquid toner comprising carrier liquid, a dispersing agent and imaging particles, the apparatus comprising: an imaging member adapted to sustain a pattern of electric charge forming a latent image on its surface; a development member arranged to receive a quantity of liquid toner; and to develop said latent image by transferring a portion of said quantity of liquid toner onto said imaging member in accordance with said pattern; a melting unit arranged downstream of the imaging member and configured to melt imaging particles of a transferred part of the portion of liquid toner, said part being transferred from the imaging member, wherein there is provided a dispersing capacity modification unit downstream of the imaging member, said dispersing capacity modification unit being configured for reducing the dispersing capacity of the dispersing agent in the transferred part of the portion of liquid toner.

Abstract: A liquid toner dispersion provided with marking particles comprising a pigment and a polyester based resin. The dispersion includes a nonpolar organic solvent and a hyperdispersant including a graft copolymer provided with an anchor group including an amine-functionalized polymer onto which at least one stabilizing group is grafted. The stabilizing group includes a hydroxylated fatty acid oligomer. The amine-functionalized polymer has a weight-average molecular weight of less than 1000 g/mol.

Abstract: A liquid toner dispersion provided with marking particles comprising a pigment and a polyester based resin, the dispersion comprising a nonpolar organic carrier liquid and a hyperdispersant comprising a graft copolymer provided with an anchor group comprising an amine-functionalized polymer onto which at least one stabilizing group is grafted, wherein a first stabilizing group and a second stabilizing group are coupled to the anchor group, wherein the first stabilizing group is a polyolefin and the second stabilizing group is hydroxylated fatty acid compound.

Abstract: A digital printing apparatus using liquid toner comprising carrier liquid, a dispersing agent and imaging particles, the apparatus comprising: an imaging member adapted to sustain a pattern of electric charge forming a latent image on its surface; a development member arranged to receive a quantity of liquid toner; and to develop said latent image by transferring a portion of said quantity of liquid toner onto said imaging member in accordance with said pattern; a melting unit arranged downstream of the imaging member and configured to melt imaging particles of a transferred part of the portion of liquid toner, said part being transferred from the imaging member, wherein there is provided a dispersing capacity modification unit downstream of the imaging member, said dispersing capacity modification unit being configured for reducing the dispersing capacity of the dispersing agent in the transferred part of the portion of liquid toner.

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: The liquid toner dispersion comprises marking particles to which dispersing agent is bound for dispersing the marking particles in a substantially non-polar carrier liquid. The dispersing agent is of a hyper-dispersant type comprising an anchor group for binding to a marking particle and stabilizing groups coupled to the anchor group for stabilizing said marking particle in the carrier liquid. The dispersion further comprises a spacer agent that comprises a polar head group and a substantially non-polar tail, and that acts as a spacer of the marking particles.

Abstract: A liquid toner dispersion provided with marking particles comprising a pigment and a polyester based resin, the dispersion comprising a nonpolar organic carrier liquid and a hyperdispersant comprising a graft copolymer provided with an anchor group comprising an amine-functionalized polymer onto which at least one stabilizing group is grafted, wherein a first stabilizing group and a second stabilizing group are coupled to the anchor group, wherein the first stabilizing group is a polyolefin and the second stabilizing group is hydroxylated fatty acid compound.

Abstract: A liquid toner dispersion provided with marking particles comprising a pigment and a polyester based resin. The dispersion includes a nonpolar organic solvent and a hyperdispersant including a graft copolymer provided with an anchor group including an amine-functionalised polymer onto which at least one stabilising group is grafted. The stabilising group includes a hydroxylated fatty acid oligomer. The amine-functionalised polymer has a weight-average molecular weight of less than 1000 g/mol.