The electrophotographic photosensitive member has: a cylindrical support; a charge generating layer formed on the cylindrical support; and a charge transport layer formed on the charge generating layer, the charge generating layer contains a hydroxygallium phthalocyanine crystal having a particular CuKα characteristic X-ray diffraction peak, a titanyl phthalocyanine crystal having a particular CuKα characteristic X-ray diffraction peak or a chlorogallium phthalocyanine crystal having a particular spectral absorption spectrum as a charge generating material, and in the charge generating layer, with respect to the film thickness of the charge generating layer, when a region from the central position of an image forming area to the end position of the image forming area is divided in the axial direction of the cylindrical support into five equal regions and the average film thickness of the charge generating layer in each region satisfies a specific condition.

A pigment composition for a green filter includes a green pigment consisting of a halogenated zinc phthalocyanine, wherein as spectral transmission characteristics of a dispersion containing only the green pigment as a pigment, the transmittance at 400 nm is 1% or less; the transmittance at 450 nm is 25% or less; the transmittance at 600 nm is 30% or less; the transmittance at 650 nm is 0.3% or less; the transmittance at the peak wavelength is 80% or more; the half value width of the peak wavelength is 120 nm or less; the transmittance at 750 nm is 1% or less; and the transmittance at 800 nm is 20% or less. The pigment composition for a green filter has low transmittance in the blue range, low transmittance in the near infrared range, and high transmittance in the green range by only a green pigment.

The electrophotographic photosensitive member has: a cylindrical support; a charge generating layer formed on the cylindrical support; and a charge transport layer formed on the charge generating layer, the charge generating layer contains a hydroxygallium phthalocyanine crystal having a particular CuK characteristic X-ray diffraction peak, a titanyl phthalocyanine crystal having a particular CuK characteristic X-ray diffraction peak or a chlorogallium phthalocyanine crystal having a particular spectral absorption spectrum as a charge generating material, and in the charge generating layer, with respect to the film thickness of the charge generating layer, when a region from the central position of an image forming area to the end position of the image forming area is divided in the axial direction of the cylindrical support into five equal regions and the average film thickness of the charge generating layer in each region satisfies a specific condition.

A colorant for plastic containing a halogenated phthalocyanine pigment (A) that satisfies conditions (1) to (4) below: (1) the average number of halogen substitutions is at least 2.0 but not more than 7.0, (2) the halogen distribution width is at least 5, (3) the amount of aluminum phthalocyanine and halogenated aluminum phthalocyanine is not more than 1.0% by mass, and (4) the central element is at least one element selected from the group consisting of hydrogen, manganese, iron, cobalt, zinc, nickel and copper. As a result, a colorant for plastic can be shown that can color a resin without changing the mechanical or chemical properties of the resin, and in particular can produce a plastic molded article having essentially no migration, extremely low discoloration due to heat, and no deformation such as warping and distortion.

A pigment composition for a green filter includes a green pigment consisting of a halogenated zinc phthalocyanine, wherein as spectral transmission characteristics of a dispersion containing only the green pigment as a pigment, the transmittance at 400 nm is 1% or less; the transmittance at 450 nm is 25% or less; the transmittance at 600 nm is 30% or less; the transmittance at 650 nm is 0.3% or less; the transmittance at the peak wavelength is 80% or more; the half value width of the peak wavelength is 120 nm or less; the transmittance at 750 nm is 1% or less; and the transmittance at 800 nm is 20% or less. The pigment composition for a green filter has low transmittance in the blue range, low transmittance in the near infrared range, and high transmittance in the green range by only a green pigment.

Provided is an organic pigment composition for color filters, which can be used preferably for a color filter that allows to produce a liquid crystal display device which has excellent heat resistance, a brighter display screen, and accordingly higher brightness; a method for producing the same; and a color filter which includes the organic pigment composition for color filters. The color filter has higher heat resistance by using the organic pigment composition for color filters which includes a phthalocyanine pigment and a pigment derivative in which the ratio of a multi-substituted phthalimide alkyl group to the whole amount of the pigment derivative is limited.

Provided is a colored resin composition which can be applied as a color filter of a solid-state imaging device capable of performing high-level imaging by not only spectrally splitting light in a visible region into three colors but also spectrally splitting infrared rays. The colored resin composition includes a colorant (A), a solvent (B), and a binder resin (C), and has a maximum transmittance in a specific wavelength region in a wavelength range of 400 to 900 nm. The colorant (A) includes a colorant having specific light absorbing characteristics and a near-infrared absorbing compound.

Provided is an organic pigment composition for color filters, which can be used preferably for a color filter that allows to produce a liquid crystal display device which has excellent heat resistance, a brighter display screen, and accordingly higher brightness; a method for producing the same; and a color filter which includes the organic pigment composition for color filters. The color filter has higher heat resistance by using the organic pigment composition for color filters which includes a phthalocyanine pigment and a pigment derivative in which the ratio of a multi-substituted phthalimide alkyl group to the whole amount of the pigment derivative is limited.

The present invention provides: an electrophotographic photosensitive member which reduces image defects due to ghosting not only under a normal temperature and normal humidity environment but also even under a low temperature and low humidity environment; and a novel phthalocyanine crystal. The electrophotographic photosensitive member of the present invention comprises a photosensitive layer which comprises a phthalocyanine crystal in which a N,N-dimethylformamide is contained. The content of the N,N-dimethylformamide is 0.1% by mass or more and 1.5% by mass or less based on the phthalocyanine crystal.

An object is to provide phthalocyanine pigment compositions that have good transparency, gloss, and suitability in the initial viscosity after production as well as outstanding storage stability when used in liquid ink. A copper phthalocyanine pigment composition containing copper phthalocyanine, a rosin compound, copper phthalocyanine sulfonic acid or its salt, and an aliphatic amine with the calcium content of the pigment composition being 200 ppm or less has good transparency, gloss, and suitability in the initial viscosity after production as well as outstanding storage stability when used in liquid ink.