A radiation curable inkjet ink set comprising a cyan inkjet ink containing a beta-copper phthalocyanine pigment and a polymerizable composition; a magenta inkjet ink containing a magenta or red pigment and a polymerizable composition; a yellow inkjet ink containing a yellow pigment and a polymerizable composition; and a black inkjet ink containing a carbon black pigment and a polymerizable composition; wherein the polymerizable compositions of the cyan, magenta, yellow and black inkjet inks include on average: a) 20.0 to 40.0 wt % of phenoxyethyl acrylate; b) 23.0 to 32.0 wt % of isobornyl acrylate; c) 1.0 to 14.4 wt % of monomer selected from the group consisting of 4-acryloylmorpholine and a monomer according to Formula (I), wherein X represents C or O, n represents 1, 2 or 3 and m represents 0 or 1; and d) up to 14.0 wt % of a multifunctional monomer or oligomer; wherein all weight percentages (wt %) are based upon the total weight of the inkjet ink; and wherein 0, 1 or 2 of the cyan, magenta, yellow and black inkjet inks deviate in a range a) to d) and this deviation is no more than 1.0 wt %.

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A resin particle dispersion containing core/shell-type resin particles and water is described. A shell portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylic acid ester containing a hydrocarbon group having from 4 to 8 carbon atoms. A core portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylamide-based monomer whose solubility parameter lies within the range of from 17.0 to 21.0 (J/cm.sup.3).sup.0.5 in an amount of not less than 5% by mass, and a glass transition temperature of the core portion resin is not higher than 50° C. An acid value of the core/shell-type resin particles is from 50 to 100 mgKOH/g. A process for producing the resin particle dispersion and a printing method using the resin particle dispersion is also described.

A resin particle dispersion containing core/shell-type resin particles and water is described. A shell portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylic acid ester containing a hydrocarbon group having from 4 to 8 carbon atoms. A core portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylamide-based monomer whose solubility parameter lies within the range of from 17.0 to 21.0 (J/cm.sup.3).sup.0.5 in an amount of not less than 5% by mass, and a glass transition temperature of the core portion resin is not higher than 50° C. An acid value of the core/shell-type resin particles is from 50 to 100 mgKOH/g. A process for producing the resin particle dispersion and a printing method using the resin particle dispersion is also described.

Provided is an aqueous in ink with which the granularity of an ink coating caused in printing on a less-ink-absorbent or non-ink-absorbent recording medium is reduced while sufficient image fastness is achieved even printing on an ink-absorbent recording medium. The present invention relates to an ague-gas ink composition for use in an inkjet recording method. The aqueous ink composition contains an aqueous medium, a pigment, and a dye, and a combination of the pigment and the dye is a predetermined combination.

Provided is an aqueous in ink with which the granularity of an ink coating caused in printing on a less-ink-absorbent or non-ink-absorbent recording medium is reduced while sufficient image fastness is achieved even printing on an ink-absorbent recording medium. The present invention relates to an ague-gas ink composition for use in an inkjet recording method. The aqueous ink composition contains an aqueous medium, a pigment, and a dye, and a combination of the pigment and the dye is a predetermined combination.

Provided is an aqueous inkjet ink with which sufficient setting properties and image fastness are achieved even in printing on a less-ink-absorbent or non-ink-absorbent recording medium. An aqueous ink composition for use in an inkjet recording method includes a color material, an aqueous medium, a binder resin, and a wax. The binder resin includes an acid-modified polypropylene resin. The wax includes an oxidized polyethylene wax.

Provided is an aqueous inkjet ink with which sufficient setting properties and image fastness are achieved even in printing on a less-ink-absorbent or non-ink-absorbent recording medium. An aqueous ink composition for use in an inkjet recording method includes a color material, an aqueous medium, a binder resin, and a wax. The binder resin includes an acid-modified polypropylene resin. The wax includes an oxidized polyethylene wax.

The present disclosure describes three-dimensional printing with scent agents. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent comprising water and a radiation absorber, wherein the radiation absorber absorbs radiation energy and converts the radiation energy to heat; and a scent agent comprising a scented compound dissolved in an aqueous liquid vehicle that includes water and organic co-solvent, wherein the organic co-solvent includes an aliphatic polyol, an esterified aliphatic polyol, or a combination thereof.

The present disclosure describes three-dimensional printing with scent agents. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent comprising water and a radiation absorber, wherein the radiation absorber absorbs radiation energy and converts the radiation energy to heat; and a scent agent comprising a scented compound dissolved in an aqueous liquid vehicle that includes water and organic co-solvent, wherein the organic co-solvent includes an aliphatic polyol, an esterified aliphatic polyol, or a combination thereof.

A three-dimensional (3D) printed object is described. The 3D printed object comprises a polymer. A surface of the 3D printed object comprises the polymer 5 and a UV absorbing colorant. The surface has a surface area roughness Sa (arithmetical mean height) of ≤5.0 μm. A method for preparing a three dimensional (3D) printed object having a smooth surface is also described.