Provided are a coloring resin composition including a resin, a coloring material, and an organic solvent, in which the resin includes a resin A including a repeating unit (A) represented by Formula (a), where, in Formula (a), L.sup.a1 represents a trivalent group, Ar.sup.a1 represents an aromatic hydrocarbon group having a substituent, the substituent is a group having a structure in which a bonding portion with the aromatic hydrocarbon group is an ester bond or an amide bond, in the ester bond, an atom on a side different from an oxygen atom in the ester bond is on a side of the bonding portion with the aromatic hydrocarbon group, and in the amide bond, an atom on a side different from a nitrogen atom in the amide bond is on a side of the bonding portion with the aromatic hydrocarbon group; a film formed of the coloring resin composition; a color filter; a solid-state imaging element; and an image display device.

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Provided are a coloring composition including a colorant and a resin, in which the colorant includes a pigment A having a structure represented by Formula (X1), and the resin includes at least one selected from a polyimide resin, a polyimide precursor, a polybenzoxazole resin, a polybenzoxazole precursor, or a polysiloxane resin; a film obtained from the coloring composition; and an optical filter, a solid-state imaging element, and an image display device including the film.

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A curable resin composition for a lens, including a coloring agent A having a maximal absorption at a wavelength of 520 to 620 nm, in which a wavelength dispersion WD of a cured product of the composition, which is calculated by the following expression (X), is 2.0×10.sup.−5 or more; a cured product formed of the curable resin composition for a lens; a diffractive optical element; and a multilayer diffractive optical element.

WD=(nC−n(1129))/(1129−656)  Expression (X)

In the expression, nC represents a refractive index at a wavelength of 656 nm and n(1129) represents a refractive index at a wavelength of 1129 nm.

A method of producing an organic pigment composition including at least organic pigment microparticles, wherein a diffuse reflectance of the organic pigment microparticles is controlled for the purpose of improving a luminance of a color filter. The luminance of the color filter is controlled to be high, by controlling a ratio of an area of the diffuse reflectance in a target wavelength range to a total area of the diffuse reflectance in the entire measurement wavelength range in a diffuse reflection spectrum of the organic pigment microparticles in the wavelength range of 380 to 780 nm, to be high. The luminance of the color filter is controlled to be high, by coating at least a part of the surface of the organic pigment microparticles with an oxide.

It is an object of the present invention to provide a negative resist composition that is useful for producing a color filter with a high transmittance of light at a wavelength of 440 nm. A negative resist composition of the present invention comprises a colorant and a resin, wherein the colorant contains a xanthene dye, and a cured film formed from the negative resist composition exhibits a spectrum that satisfies the following condition 1: [condition 1] a maximum absorption wavelength is present in a wavelength range of 500 to 580 nm, and based on a transmittance at the maximum absorption wavelength being 5%, a transmittance at a wavelength of 440 nm is 80% or more and a transmittance at a wavelength of 620 nm is 80% or more.

An infrared-absorbing composition includes particles of an infrared-absorbing coloring agent and a solvent, in which the particles in the infrared-absorbing composition have two or more maximal absorption wavelengths exhibited in a wavelength range of 650 to 1500 nm, and in the range, in a case where an absorbance at a maximal absorption wavelength existing on a second shortest wavelength side is set to 1, an absorbance at a maximal absorption wavelength existing on a shortest wavelength side is 0.6 to 2.0.

An object of the present invention is to provide a colored resin composition, which is useful in production of a color filter suitable for an organic EL display device, excellent in low temperature curability, and also excellent in red color reproducibility. The present invention relates to the colored resin composition containing a colorant, a resin, a polymerizable compound, and a polymerization initiator, wherein the colorant is composed of only pigments, and the pigments include C.I. Pigment Violet 29, a red pigment and a yellow pigment.

An electrostatic charge image developing toner includes a toner particle that contains a silicon phthalocyanine dye and a zirconium oxide particle.

A composition comprising: (a) a leuco composition; and (b) a stabilizing amount of an antioxidant composition. The antioxidant composition comprises at least one sterically hindered phenol and at least one substituted diarylamine, and the mole ratio of the hindered phenol to the substituted diarylamine is greater than 1:1. In another embodiment, a composition comprises (a) a leuco composition and (b) an antioxidant composition; and optionally (c) a solvent composition. The combined mass of the leuco compounds and antioxidants present in the composition is 10% or more of the total mass of the composition, and (b) the molar ratio of antioxidants present in the composition to leuco compounds present in the composition is greater than 1:1.

An electrolytic dye reduction method comprises preparing a catholyte by dispersing a dye in a leucodye comprising electrolyte. In a preferred method the leucodye like leucoindigo is the sole dispersing aid.