Abstract: The object of the present invention is to provide an image formation method that can give an image that is excellent in terms of adhesion to a substrate, blocking resistance of a resulting printed material, and molding suitability, in particular vacuum forming properties, and that can suppress post-molding cracking of a molding. Disclosed is an image formation method comprising, in order, Step a: a step of applying Liquid A to a substrate, Step b: a step of irradiating the applied Liquid A with actinic radiation so as to carry out complete curing or semi-curing up to a degree of cure of at least 90%, Step c: a step of applying Liquid B to a cured layer of the completely cured or semi-cured Liquid A, and Step d: a step of completely curing Liquid A and Liquid B.

Abstract: An actinic ray-curable-type inkjet ink composition for 3D printing includes an acrylate monomer A capable of forming a homopolymer having a glass transition temperature of from 25° C. to 120° C.; an acrylate monomer B capable of forming a homopolymer having a glass transition temperature of ?60° or higher and lower than 25° C.; a bifunctional acrylate oligomer C having a weight-average molecular weight of from 2,000 to 20,000; and an acylphosphine oxide compound, in which the mass content of bifunctional or higher-functional acrylate compounds is 15% by mass or less.

Abstract: A radiation curable type ink jet ink set contains a magenta ink which contains C. I. Pigment Red 57:1 in an amount of 2.0% by mass to 4.0% by mass and a yellow ink which contains C. I. Pigment Yellow 185 in an amount of 1.5% by mass to 4.0% by mass. An ink jet recording method includes a jetting step of jetting the yellow ink and/or the magenta ink contained in the radiation curable type ink jet ink set onto a substrate from an ink jet recording head, and a curing step of curing the magenta ink and/or the yellow ink by radiation irradiation.

Abstract: A radiation curable type ink jet ink set contains a magenta ink which contains C. I. Pigment Red 57:1 in an amount of 2.0% by mass to 4.0% by mass and a yellow ink which contains C. I. Pigment Yellow 185 in an amount of 1.5% by mass to 4.0% by mass. An ink jet recording method includes a jetting step of jetting the yellow ink and/or the magenta ink contained in the radiation curable type ink jet ink set onto a substrate from an ink jet recording head, and a curing step of curing the magenta ink and/or the yellow ink by radiation irradiation.

Abstract: To provide a radiation-curable inkjet ink set that has a sufficiently wide color gamut and is excellent in terms of mechanical strength and substrate adhesion of cured ink, and an inkjet recording method employing the ink set. A radiation-curable inkjet ink set comprises a yellow ink comprising C.I. Pigment Yellow 185 at 1.5 to 2.5 mass %, and a magenta ink comprising C.I. Pigment Red 48:4 at 1.5 to 2.5 mass %.

Abstract: An inkjet recording method includes in sequence an application step of applying a transparent ink or an effect pigment ink onto a recording medium, an image formation step of carrying out image formation by discharging an effect pigment ink or a transparent ink onto the recording medium, and a step of curing the transparent ink and the effect pigment ink above the recording medium, the method including or not including, between the application step and the image formation step, a step of curing the transparent ink or the effect pigment ink, and when it does the transparent ink or the effect pigment being cured at a percentage cure of no greater than 85%, the effect pigment ink including an effect pigment, a polymerization initiator, and a polymerizable compound, and the transparent ink including a polymerization initiator and a polymerizable compound but including substantially no pigment.

Abstract: An inkjet ink composition of the present invention that includes (Component A) N-vinylcaprolactam, (Component B) a monofunctional acrylate having an aromatic ring, (Component C) a monofunctional acrylate having an aliphatic hydrocarbon ring, (Component D) a polyether-modified silicone compound having a (meth)acrylate group, (Component E) an acrylic resin having a glass transition temperature (Tg) of 20° C. to 100° C., (Component F) a pigment, and (Component G) a photopolymerization initiator, wherein the total content of Component A to Component C is at least 90 mass % of the total mass of polymerizable compounds, excluding Component D, in the ink composition, and a content of Component E is 1 to 8 mass % relative to the total mass of the ink composition.

Abstract: An inkjet ink composition includes (component A) C.I. Pigment Yellow 180, (component B) a fatty acid amide compound, and (component C) a high molecular weight dispersant. The method of producing an inkjet ink composition includes preliminary mixing (component A) C.I. Pigment Yellow 180 and (component B) a fatty acid amide compound to obtain a mixture, and mixing the mixture and (component C) a high molecular weight dispersant.

Abstract: The object of the present invention is to provide an image formation method that can give an image that is excellent in terms of adhesion to a substrate, blocking resistance of a resulting printed material, and molding suitability, in particular vacuum forming properties, and that can suppress post-molding cracking of a molding. Disclosed is an image formation method comprising, in order, Step a: a step of applying Liquid A to a substrate, Step b: a step of irradiating the applied Liquid A with actinic radiation so as to carry out complete curing or semi-curing up to a degree of cure of at least 90%, Step c: a step of applying Liquid B to a cured layer of the completely cured or semi-cured Liquid A, and Step d: a step of completely curing Liquid A and Liquid B.

Abstract: To provide a radiation-curable inkjet ink set that has a sufficiently wide color gamut and is excellent in terms of mechanical strength and substrate adhesion of cured ink, and an inkjet recording method employing the ink set. A radiation-curable inkjet ink set comprises a yellow ink comprising C.I. Pigment Yellow 185 at 1.5 to 2.5 mass %, and a magenta ink comprising C.I. Pigment Red 48:4 at 1.5 to 2.5 mass %.

Abstract: An inkjet ink composition includes (component A) C.I. Pigment Yellow 180, (component B) a fatty acid amide compound, and (component C) a high molecular weight dispersant. The method of producing an inkjet ink composition includes preliminary mixing (component A) C.I. Pigment Yellow 180 and (component B) a fatty acid amide compound to obtain a mixture, and mixing the mixture and (component C) a high molecular weight dispersant.

Abstract: An inkjet recording method includes in sequence a application step of applying a transparent ink or an effect pigment ink onto a recording medium, a image formation step of carrying out image formation by discharging an effect pigment ink or a transparent ink onto the recording medium, and a step of curing the transparent ink and the effect pigment ink above the recording medium, the method comprising or not comprising, between the application step and the image formation step, a step of curing the transparent ink or the effect pigment ink, and when it does the transparent ink or the effect pigment being cured at a percentage cure of no greater than 85%, the effect pigment ink comprising an effect pigment, a polymerization initiator, and a polymerizable compound, and the transparent ink comprising a polymerization initiator and a polymerizable compound but comprising substantially no pigment.

Abstract: An ink composition comprising: (A) an isoindoline-based pigment; (B) a polymeric dispersant; (C) an alkylammonium salt of a sulfonated derivative of a disazo-based yellow colorant; (D) a polymerizable compound; and (E) a polymerization initiator.

Abstract: A photocurable composition is provided that includes a compound represented by Formula (I) below, in Formula (I), X denotes O, S, or NRa, n1 denotes 0 or 1, and R1 to R14 and Ra independently denote a hydrogen atom, a halogen atom, or a monovalent substituent, at least one of R1 to R14 and Ra not being a hydrogen atom). There is also provided an inkjet recording method that includes (a1) a step of discharging the photocurable composition onto a recording medium and (b1) a step of curing the photocurable composition by irradiating the discharged photocurable composition with light.

Abstract: An ink set for inkjet recording is provided that includes at least a colored liquid comprising at least a radically polymerizable compound, a photopolymerization initiator, and a colorant and an undercoat liquid comprising at least a radically polymerizable compound and a photopolymerization initiator, the undercoat liquid comprising a sensitizer represented by Formula (I) below. In Formula (I) above, X denotes O, S, or NR, n denotes 0 or 1, R denotes a hydrogen atom, an alkyl group, or an acyl group, and R1, R2, R3, R4, R5, R6, R7, and R8 independently denote a hydrogen atom or a monovalent substituent. There is also provided an inkjet recording method employing the ink set for inkjet recording, the method including a step of applying the undercoat liquid on top of a recording medium, a step of semi-curing the undercoat liquid, and a step of carrying out image formation by discharging the colored liquid on top of the semi-cured undercoat liquid.

Abstract: A photocurable composition is provided that includes a polymerizable compound, a photopolymerization initiator that is an acylphosphine oxide and/or an alpha-aminoacetophenone, a compound represented by Formula (I) below, and an amine compound. There are also provided a photocurable ink, a process for producing a photocured material, and an inkjet recording method.

Abstract: The invention provides an ink composition including (i) a sensitizing dye having a polymerizable group as a substituent, (ii) a polymerization initiator and (iii) a polymerizable compound having an ethylenically unsaturated bond. The invention also provides an inkjet recording method and a polymerizable compound useful as a sensitizing dye. The sensitizing dye (i) is represented by Formula (I) or (II) below. In the formulae, X represents O, S, NRa, or NRb, n1 and n2 each represent 0 or 1, Ra, Rb, and R1 to R18 each represent a hydrogen atom or a monovalent substituent, and one polymerizable group is present in the molecule.

Abstract: An ink composition is provided that includes compound A represented by Formula (I) below, compound B represented by Formula (II) below, and a polymerizable compound, wherein, in Formula (I), X denotes O, S, or NRa, n1 denotes 0 or 1, Ra, R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 independently denote a hydrogen atom or a monovalent substituent, and two of R1, R2, R3, R4, R5, R6, R7, and R8 that are adjacent may be linked to each other to form a ring, and in Formula (II), X denotes O, S, or NRb, n2 denotes 0 or 1, Rb, R11, R12, R13, R14, R15, R16, R17, and R18 independently denote a hydrogen atom or a monovalent substituent, and two of R11, R12, R13, and R14 that are adjacent may be linked to each other to form a ring. There is also provided an inkjet recording method comprising (a) a step of discharging the ink composition onto a recording medium, and (b) a step of curing the ink composition by irradiating the discharged ink composition with actinic radiation.

Abstract: An ink set for inkjet recording is provided that includes at least a colored liquid composition having at least a radically polymerizable compound, a photopolymerization initiator, and a colorant, and an undercoat liquid composition having at least a radically polymerizable compound and a photopolymerization initiator, the colored liquid composition having as the photopolymerization initiator at least one type of ?-aminoacetophenone compound, and the undercoat liquid composition having as the photopolymerization initiator at least one type of compound selected from the group consisting of an acylphosphine oxide compound, an ?-hydroxyacetophenone compound, and an oxime ester compound.

Abstract: An active-energy ray curable ink-jet recording apparatus includes: an active-energy ray irradiation source; a plurality of full-line ink-jet heads which eject a liquid functional material that is curable by an active-energy ray, onto a recording medium which is scanned and transported; and a head controller for controlling the heads to form an image on the recording medium, wherein the plurality of full-line ink-jet heads include at least a black head and a yellow head on an extreme downstream side in a direction of transporting the recording medium.