Abstract: Provided are a decorative sheet having stretchability and heat resistance and an in-mold forming method capable of forming in-mold injection formed products having excellent decorative image. A decorative sheet includes an image layer and an image running prevention region in order on a resin sheet, in which the image layer is a cured image of an ink composition containing (a) a polymerizable compound, (b) a polymerization initiator, and (c) a coloring agent; the image running prevention region is a cured layer of a composition for running prevention containing (a) a polymerizable compound, and (b) a polymerization initiator; and the image running prevention region has superior heat resistance to the image layer, and an injection forming method using the decorative sheet.

Abstract: A decorative sheet includes a resin substrate, and an image layer that includes a fixed-ink image formed of an ink composition containing (a) a pigment, (b) polymer particles, (c) a water-soluble organic solvent, and (d) water, on the resin substrate. When a tensile test is performed on the decorative sheet in an atmosphere at 180° C., a stretching rate thereof that is defined as below is 150% or higher. Stretching rate (%)=[(length at the time of breakage?length before stretching)/(length before stretching)]×100.

Abstract: The invention provides an image forming method having at least: applying, onto a recording medium, an ink composition containing at least a water-soluble organic solvent, a pigment, a polymer particle and water; and removing at least a part of the water-soluble organic solvent from the ink composition on the recording medium. The water-soluble organic solvent contains at least a water-soluble organic solvent having a vapor pressure of less than 10 Pa at 20° C., a boiling temperature of less than 260° C., and an SP value of less than 25, at a content of 30 mass % or more with respect to the total water-soluble organic solvent content of the ink composition.

Abstract: The present invention provides an ink set including an ink composition and a maintenance liquid that removes from a head nozzle surface a substance that is derived from the ink composition and that adheres to the head nozzle surface, the ink composition including a pigment coated with a water-insoluble polymer formed by copolymerizing a monomer mixture including a styrene macromer; polymer particles; a water-soluble organic solvent; and water.

Abstract: There is provided an ink set including an aqueous ink composition and a maintenance liquid. The aqueous ink composition includes water; a pigment; resin particles having a minimum film-forming temperature MFT0, which is a minimum film-forming temperature obtained when the resin particles are dispersed in water, of 60° C. or higher; and a water-soluble organic solvent, wherein a minimum film-forming temperature MFT25 of the resin particles, which is a minimum film-forming temperature obtained when the resin particles are mixed with the water-soluble organic solvent in an amount of 25% by mass relative to the solid content of the resin particles, and water, is at least 40° C. lower than MFT0. The maintenance liquid includes an organic solvent and water. There is also provided an image recording method.

Abstract: A decorative sheet includes a resin substrate, and an image layer that includes a fixed-ink image formed of an ink composition containing (a) a pigment, (b) polymer particles, (c) a water-soluble organic solvent, and (d) water, on the resin substrate. When a tensile test is performed on the decorative sheet in an atmosphere at 180° C., a stretching rate thereof that is defined as below is 150% or higher.

Abstract: An ink composition, including: a water-soluble solvent A; a pigment; and water. The water-soluble solvent A contains at least a water-soluble solvent having an SP value of 27.5 or less at an amount of 90 mass % or more and a compound represented by the following Formula (1), wherein the compound represented by Formula (1) is the same as or different from the water-soluble solvent having an SP value of 27.5 or less: wherein, in Formula (1), l, m and n each independently represent an integer of 1 or more, the total of l, m and n is from 3 to 15, and AOs each independently represents an ethyleneoxy group or propyleneoxy group.

Abstract: The ink set for inkjet recording includes: a water-based ink containing pigment particles and 10 to 25 wt % of water-soluble high-boiling-point organic solvent having an SP value of not higher than 30; and a treatment liquid containing a fluidity reducing agent which reduces fluidity of the pigment particles by making contact with the water-based ink, and 10 to 25 wt % of water-soluble high-boiling-point organic solvent having an SP value of not higher than 30.

Abstract: The present invention provides a maintenance liquid for inkjet recording including at least water, an organic solvent, a basic compound and an acidic compound, and having pH of from 6.0 to 8.5.

Abstract: Provided are a decorative sheet having stretchability and heat resistance and an in-mold forming method capable of forming in-mold injection formed products having an excellent decorative image. A decorative sheet includes an image layer and an image running prevention region in order on a resin sheet, in which the image layer is a cured image of an ink composition containing (a) a polymerizable compound, (b) a polymerization initiator, and (c) a coloring agent; the image running prevention region is a cured layer of a composition for running prevention containing (a) a polymerizable compound, and (b) a polymerization initiator; and the image running prevention region has superior heat resistance to the image layer, and an injection forming method using the decorative sheet.

Abstract: An inkjet recording liquid includes: water; at least one colorant; and a water-soluble organic solvent having an SP (solubility parameter) value of 27.5 or less at a content of 70 mass % or more with respect to the total amount of water-soluble organic solvent, wherein the water-soluble organic solvent having an SP value of 27.5 or less includes at least one water-soluble organic solvent having a molecular weight of from 240 to 1400 and represented by the following Formula (1) at a content of 70 mass % or more with respect to the amount of the water-soluble organic solvent having an SP value of 27.5 or less. R-An-OH ??Formula (1) In Formula (1), R represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a group derived from a sugar alcohol having 3 to 12 carbon atoms; each A independently represents an ethyleneoxy group or a propyleneoxy group; and n represents an integer of from 3 to 24.

Abstract: The invention provides an ink set having at least: a magenta ink containing at least a pigment; and a cyan ink containing at least a pigment. A ratio of M/C, in which M is the concentration of the pigment in the magenta ink, and C is the concentration of the pigment in the cyan ink, is 1.6 or more. A ratio of S2/S1, in which S2 is the solid content of an ink that has the largest solid content among the inks included in the ink set, and S1 is the solid content of an ink that has the smallest solid content among the inks included in the ink set, is 1.2 or less. The invention further provides an image forming method having applying the inks of the ink set onto a recording medium.

Abstract: The present invention provides an image forming method including jetting an ink composition containing a pigment, a volatile water-soluble organic solvent, polymer particles and water, from a heated nozzle plate of an inkjet head onto a recording medium; and applying a maintenance liquid on a nozzle surface of the nozzle plate after jetting.

Abstract: The ink set for inkjet recording includes: a water-based ink containing pigment particles and 10 to 25 wt % of water-soluble high-boiling-point organic solvent having an SP value of not higher than 30; and a treatment liquid containing a fluidity reducing agent which reduces fluidity of the pigment particles by making contact with the water-based ink, and 10 to 25 wt % of water-soluble high-boiling-point organic solvent having an SP value of not higher than 30.

Abstract: The ink set for inkjet recording includes: a water-based ink containing pigment particles and 10 to 25 wt % of water-soluble high-boiling-point organic solvent having an SP value of not higher than 30; and a treatment liquid containing a fluidity reducing agent which reduces fluidity of the pigment particles by making contact with the water-based ink, and 10 to 25 wt % of water-soluble high-boiling-point organic solvent having an SP value of not higher than 30.

Abstract: The invention provides an image forming method including at least: applying, onto a recording medium, an ink composition containing at least a water-soluble solvent, a pigment, a polymer particle and water; and removing at least a part of the volatile solvent from the ink composition on the recording medium. Herein, the water-soluble solvent contains at least a volatile water-soluble solvent having an SP value of 27.5 or more at an amount of 30 mass % thereof.

Abstract: A liquid ejection head has: a nozzle plate having a nozzle surface in which at least one nozzle for ejecting droplets of a liquid are formed; an anti-drying liquid supply port which supplies an anti-drying liquid to the nozzle surface of the nozzle plate; a flow channel portion which is formed in the nozzle surface and through which the anti-drying liquid supplied to the nozzle surface from the anti-drying liquid supply port flows; and an anti-drying liquid discharge port which suctions and discharges the anti-drying liquid flowing through the flow channel portion on the nozzle surface, from the nozzle surface, wherein, while the anti-drying liquid flows through the flow channel portion, the anti-drying liquid evaporates to increase humidity.

Abstract: An ink composition includes a colorant represented by the following formula (I); water; a guanidine-based compound; and a colorless water-soluble planar compound having more than ten delocalized ?-electrons within one molecule: wherein Pc represents a (k+l+m+n)-valent phthalocyanine nucleus represented by the following formula (II); wherein the symbols in the formulae (I) and (II) are defined in the specification.

Abstract: An ink composition includes a colorant represented by the following formula (I); water; a guanidine-based compound; and a colorless water-soluble planar compound having more than ten delocalized ?-electrons within one molecule: wherein the symbols in the formula (I) are defined in the specification.

Abstract: An ink composition includes a colorant represented by the following formula (I); water; a guanidine-based compound; and a colorless water-soluble planar compound having more than ten delocalized ?-electrons within one molecule: wherein the symbols in the formula (I) are defined in the specification.