Abstract: A method for producing a (meth)acrylic acid amide compound, the method including: adding at least one selected from the group consisting of an amino group-containing compound and a neutralization salt of the amino group-containing compound to a mixture including (meth)acrylic acid halide and an organic solvent immiscible with water to allow the (meth)acrylic acid halide and at least one selected from the group consisting of the amino group-containing compound and the neutralization salt of the amino group-containing compound to react with each other, to produce the (meth)acrylic acid amide compound.

Abstract: Provided is a composition including: an acrylamide compound represented by general formula (1) below; urethane (meth)acrylate having a SI value of 3 or less in a skin sensitization test; and a polymerization initiator having a molecular weight of 800 or greater, where in general formula (1), R1 represents an alkyl group containing 1 through 6 carbon atoms, X represents an alkylene group containing 1 through 6 carbon atoms, and Y represents any one selected from the group consisting of general formula (2) below and general formula (3) below, where in general formula (2), R2 represents an alkyl group containing 1 through 10 carbon atoms, and * represents a binding site with X above, where in general formula (3), R2 represents an alkyl group containing 1 through 10 carbon atoms, and * represents a binding site with X above.

Abstract: An active energy ray curable composition contains an acrylamide compound A1 represented by the following Chemical formula 1 or the following Chemical formula 2; a multi-functional polymerizable compound B1 having an SI value of 3 or less in a skin sensitivity test; a polymerization initiator C1 having no maximum absorption peak in a wavelength range of from 365 to 405 nm; and a hydrogen donor D,

Abstract: Provided is a composition including an acrylamide compound having a molecular weight of 150 or greater but 250 or less (A1), and a monomer having a cyclic structure represented by General Formula (3) below, or General Formula (4) below, or both (A2), where, in General Formulae (3) and (4), L is a single bond or a straight chain or branched alkylene group that has from 1 through 10 carbon atoms and may include an oxygen atom, a nitrogen atom, or a sulfur atom; A is a cyclic structure that has from 2 through 10 carbon atoms and may include an oxygen atom, a nitrogen atom, or a sulfur atom; R6 is a hydrogen atom or a methyl group; and R7 and R8 are each a straight chain or branched alkyl group having from 1 through 10 carbon atoms.

Abstract: A method for producing a (meth)acrylic acid amide compound, the method including: adding at least one selected from the group consisting of an amino group-containing compound and a neutralization salt of the amino group-containing compound to a mixture including (meth)acrylic acid halide and an organic solvent immiscible with water to allow the (meth)acrylic acid halide and at least one selected from the group consisting of the amino group-containing compound and the neutralization salt of the amino group-containing compound to react with each other, to produce the (meth)acrylic acid amide compound.

Abstract: Provided is a composition including: an acrylamide compound (A1) having a molecular weight of 150 or greater but 250 or less; and a multifunctional polymerizable compound (A2), wherein a content of the multifunctional polymerizable compound (A2) is 15% by mass or greater but 35% by mass or less.

Abstract: A nail printer is provided. The nail printer includes a discharger, an irradiator, and an irradiation intensity variator. The discharger is configured to discharge an active energy ray curable composition to a nail by an inkjet method. The irradiator is configured to irradiate the nail with an active energy ray. The irradiation intensity variator is configured to vary an irradiation intensity of the active energy ray radiated from the irradiator.

Abstract: A pigment dispersion composition contains one or more pigments selected from the group consisting of strontium titanate, calcium titanate, and zinc sulfide, a pigment dispersant having an amine value of from 10 to 100 mgKOH/g and a polymerizable compound.

Abstract: Provided is a composition including: an acrylamide compound represented by general formula (1) in 20% by mass or greater but 50% by mass or less; a multifunctional monomer in 40% by mass or greater but 70% by mass or less; and a polymerization initiator, where in general formula (1), R1 represents alkyl group containing 1 through 6 carbon atoms, X represents alkylene group containing 1 through 6 carbon atoms, and Y represents any one selected from the group consisting of general formula (2) below and general formula (3) below, where in general formula (2), R2 represents alkyl group containing 1 through 10 carbon atoms, and * represents binding site with X above, where in general formula (3), R2 represents alkyl group containing 1 through 10 carbon atoms, and * represents binding site with X above.

Abstract: Provided is a composition including an acrylamide compound having a molecular weight of 150 or greater but 250 or less (A1), a polyfunctional polymerizable compound including an alkylene oxide group (A2), and a polyfunctional polymerizable compound (A3) different from the polyfunctional polymerizable compound (A2).

Abstract: Provided is a composition including an acrylamide compound (A1) having a molecular weight of 150 or greater but 250 or less, and a trifunctional or higher polymerizable compound (A2), wherein an amount of the trifunctional or higher polymerizable compound (A2) is 1% by mass or greater but 30% by mass or less relative to a total amount of the composition.

Abstract: An active-energy-ray-curable aqueous composition is provided that contains water, a polymerizable compound that undergoes radical polymerization in response to active energy rays, and a polymerization initiator (C1) that produces radicals in response to active energy rays.

Abstract: Provided is a pigment dispersion composition including: a yellow pigment; a polymerizable compound having a solubility parameter (SP value) of 10.00 or greater; and a pigment dispersant having an amine value of 30 mgKOH/g or greater but 100 mgKOH/g or less, wherein a ratio (B/A) of a content (B) of the pigment dispersant to a content (A) of the yellow pigment is 0.10 or greater but 0.80 or less.

Abstract: An active-energy-ray-curable composition including a pigment, a polymerizable compound, and a pigment-adsorptive component is provided. The pigment is at least one selected from the group consisting of strontium titanate, calcium titanate, zinc sulfide, and zinc oxide. The polymerizable compound contains an acrylamide compound (A1) having a specific ester structure.

Abstract: A composition contains an acrylamide compound A1 having an ester structure and a polymerization initiator B1 having a molecular weight of 800 or more.

Abstract: A curable composition is provided comprising an acrylamide compound represented by the following general formula (1): wherein, X represents a branched alkylene group having 2 to 5 carbon atoms, and Y represents the following general formula (2): wherein, R represents an alkyl group having 1 to 4 carbon atoms, and * represents a binding site with X.

Abstract: A developer storage container includes a container body, and a discharge member, wherein the container body includes a first opening on a downstream side in a conveyance direction in which the developer is conveyed, and includes a first side wall, the first side wall includes on an inner surface a protrusion, the discharge member is provided at the first opening to close the first opening, and includes a discharge port, and includes a suppressor, and includes a second side wall, the suppressor includes a plurality of scooping-up members, each of the plurality of scooping-up members includes a scooping-up surface, and a plurality of second openings connecting to the space is provided on the scooping-up surface of any of the plurality of scooping-up members at respective positions different from each other in the conveyance direction.

Abstract: An active energy ray curable composition contains an acrylamide compound A1 represented by the following Chemical formula 1 or the following Chemical formula 2; a multi-functional polymerizable compound B1 having an SI value of 3 or less in a skin sensitivity test; a polymerization initiator C1 having no maximum absorption peak in a wavelength range of from 365 to 405 nm; and a hydrogen donor D,

Abstract: An image forming apparatus includes an image forming unit for forming an image on a sheet and a sheet conveying unit for conveying the sheet along a conveying path extending in a substantially horizontal direction in a lower portion of the image forming unit. The image forming apparatus includes a recovery container which is provided in front of the image forming unit and above the conveying path, and accommodates the waste toner discharged from the image forming unit. The image forming apparatus includes a waste toner conveying pipe that conveys the waste toner discharged from the image forming unit to the recovery container, without passing through the rear portion and the side portion of the image forming unit.

Abstract: A developer container includes a container main body that stores a developer, has an outlet for discharging the developer to a downstream side in a conveyance direction in which the developer is conveyed, has a sidewall having a circular cross-section perpendicular to the conveyance direction, and has a first ridge that continuously or intermittently continues to the downstream side in a helical form in a certain winding direction and is formed on an inner surface of the sidewall, and a limiter disposed at a downstream end that is an end on the downstream side of the container main body, to secure a space between the limiter and the sidewall, the space extending to an upstream side of the outlet in the conveyance direction and extending from the upstream side to the outlet.