Abstract: A first object of the present invention is to provide a composition that is capable of forming a cured substance having a high magnetic permeability and a low magnetic loss and has excellent hole filling suitability and excellent storage stability. A second object of the present invention is to provide a magnetic particle-containing cured substance formed of the composition. A third object of the present invention is to provide a magnetic particle-introduced substrate and an electronic material that contain the magnetic particle-containing cured substance.

Abstract: An object of the present invention is to provide a composition that is capable of forming a magnetic particle-containing cured substance having a high magnetic permeability and a low magnetic loss, and has excellent embedding suitability. Another object of the present invention is to provide a magnetic particle-containing cured substance and an electronic component. The composition according to an embodiment of the present invention is a composition containing magnetic particles that has an Fe atom content of 70% by mass or more and an epoxy resin, in which the magnetic particles have a peak top in a range of 10 to 30 ?m in a particle size distribution curve showing a volume-based frequency distribution, and a content of the magnetic particles is 70% to 90% by mass with respect to a total solid content in the composition.

Abstract: An object of the present invention is to provide a composition that can form a magnetic particle-containing film having excellent magnetic permeability and excellent acid resistance, and has excellent sedimentation stability. Another object of the present invention is to provide a magnetic particle-containing film that relates to the composition, and an electronic component that includes the magnetic particle-containing film. The composition according to an embodiment of the present invention contains magnetic particles that contain 70% to 90% by mass of Fe atoms and have a crystal structure of Fe, an average particle diameter of 2 to 30 ?m, and an aspect ratio less than 8, and a rheology control agent.

Abstract: An object of the present invention is to provide a composition that can form a magnetic particle-containing film having excellent magnetic isotropy and has excellent temporal stability. Another object of the present invention is to provide a magnetic particle-containing film that relates to the composition, and an electronic component that includes the magnetic particle-containing film. The composition according to an embodiment of the present invention is a composition containing magnetic particles and a rheology control agent, in which a content of the magnetic particles having an aspect ratio less than 8 is 25% by mass or more with respect to a total mass of the magnetic particles, the magnetic particles contain metal atoms, the metal atoms contain one or more kinds of specific atoms selected from the group consisting of Ni atoms and Co atoms, and a content of the specific atoms is 50% by mass or more with respect to a total mass of the metal atoms.

Abstract: A light-shielding composition includes a light-shielding pigment, a resin, a polymerizable compound, which is a low-molecular-weight compound containing an ethylenically unsaturated group, and a polymerization initiator, in which the light-shielding pigment contains an inorganic particle, and an inorganic compound coating the inorganic particle, the inorganic particle contains one or more nitrogen-containing metal compounds selected from the group consisting of zirconium nitride, zirconium oxynitride, vanadium nitride, vanadium oxynitride, niobium nitride, and niobium oxynitride, the inorganic compound contains a silicon atom, and a contained atom number ratio of a total content of metallic atoms, which are selected from the group consisting of a zirconium atom, a vanadium atom, and a niobium atom, to a content of the silicon atom in a surface of the light-shielding pigment, as determined by X-ray photoelectron spectroscopy, is greater than 1.0.

Abstract: A magnetic particle-containing composition contains magnetic particles having a plurality of peak tops in a particle size distribution curve showing a volume-based frequency distribution, a resin, and a solvent.

Abstract: A first object of the present invention is to provide a composition that contains electromagnetic wave absorbing particles and has excellent dispersion stability. A second object of the present invention is to provide a film and a cured film that are formed using the aforementioned composition and a manufacturing method of a cured film. A third object of the present invention is to provide an electronic component including a cured film formed using the aforementioned composition. The composition according to an aspect of the present invention contains electromagnetic wave absorbing particles, a dispersant, and a solvent. The composition absorbs electromagnetic waves in a frequency band of 1 GHz or higher when formed into a film.

Abstract: A photosensitive composition contains a black pigment, a resin, a polymerizable compound, and a photopolymerization initiator, in which the black pigment includes a coated particle which includes a metal-containing particle consisting of a nitride or oxynitride of one or more metals selected from the group consisting of zirconium, vanadium, and niobium, and a metal oxide coating layer consisting of a metal oxide, with which the metal-containing particle is coated.

Abstract: The first object of the present invention is to provide a photosensitive resin composition with which a cured film that exhibits a high magnetic permeability real part ?? and a low magnetic loss tan ? in the high frequency region can be formed. The second object of the present invention is to provide a cured film that is formed by using the photosensitive resin composition and to provide an inductor and an antenna that contain the cured film. The photosensitive resin composition of the present invention contains a resin that has an ethylenic unsaturated group and a graft chain, or a resin that has a compound having an ethylenic unsaturated group and has a graft chain; an iron-containing particle of which an iron atom content is 10% by mass or more; and a polymerization initiator.

Abstract: A curable composition contains a resin containing a curable group, a colorant, a polymerization inhibitor, and a polymerization initiator. A manufacturing method of the curable composition includes a colorant dispersing step of mixing together the resin containing a curable group, the colorant, and the polymerization inhibitor and a mixing step of mixing together the colorant dispersion and the polymerization initiator so as to obtain the curable composition. A cured film is obtained by curing the curable composition. A color filter, a solid-state imaging element, and an infrared sensor have the cured film. A manufacturing method of the cured film includes a curable composition layer-forming step, an exposure step, and a development step.

Abstract: A light-shielding composition includes a light-shielding pigment, a resin, a polymerizable compound, which is a low-molecular-weight compound containing an ethylenically unsaturated group, and a polymerization initiator, in which the light-shielding pigment contains an inorganic particle, and an inorganic compound coating the inorganic particle, the inorganic particle contains one or more nitrogen-containing metal compounds selected from the group consisting of zirconium nitride, zirconium oxynitride, vanadium nitride, vanadium oxynitride, niobium nitride, and niobium oxynitride, the inorganic compound contains a silicon atom, and a contained atom number ratio of a total content of metallic atoms, which are selected from the group consisting of a zirconium atom, a vanadium atom, and a niobium atom, to a content of the silicon atom in a surface of the light-shielding pigment, as determined by X-ray photoelectron spectroscopy, is greater than 1.0.

Abstract: A light-shielding resin composition contains: a light-shielding pigment which is one or more selected from the group consisting of metal nitride-containing particles containing an atom A and metal oxynitride-containing particles containing the atom A; and a resin, in which the light-shielding pigment contains at least one of a nitride or an oxynitride of a transition metal having an electronegativity of 1.22 to 1.80, among transition metals of groups 3 to 7, and the atom A is at least one selected from the group consisting of hafnium and tungsten, and is an atom different from the transition metal.

Abstract: An object of the present invention is to provide a curable composition which has excellent patterning properties and makes it possible to obtain a cured film having excellent light blocking properties. Another object of the present invention is to provide a cured film, a light blocking film, a solid-state imaging element, and a solid-state imaging device. The curable composition contains inorganic particles, a polymerizable compound, and a polymerization initiator, in which the inorganic particles contain metal carbide-containing particles containing a carbide of an element in group 5 of the periodic table, and a content of the metal carbide-containing particles in a total mass of the inorganic particles is equal to or greater than 55% by mass.

Abstract: An object of the present invention is to provide a curable composition which has excellent patterning properties and makes it possible to obtain a cured film having excellent light blocking properties. Another object of the present invention is to provide a cured film, a light blocking film, a solid-state imaging element, and a solid-state imaging device. The curable composition contains inorganic particles, a polymerizable compound, and a polymerization initiator, in which the inorganic particles contain metal carbide-containing particles containing a carbide of an element in group 5 of the periodic table, and a content of the metal carbide-containing particles in a total mass of the inorganic particles is equal to or greater than 55% by mass.

Abstract: A curable composition contains a resin containing a curable group, a colorant, a polymerization inhibitor, and a polymerization initiator. A manufacturing method of the curable composition includes a colorant dispersing step of mixing together the resin containing a curable group, the colorant, and the polymerization inhibitor and a mixing step of mixing together the colorant dispersion and the polymerization initiator so as to obtain the curable composition. A cured film is obtained by curing the curable composition. A color filter, a solid-state imaging element, and an infrared sensor have the cured film. A manufacturing method of the cured film includes a curable composition layer-forming step, an exposure step, and a development step.

Abstract: A magnetic tape cartridge including a reel and a pack of magnetic tape wound onto the reel, the magnetic tape includes an aromatic polyamide support and has a thickness of from 3.5 to 5.5 ?m and a length of 1000 m or more, and a difference in tape thickness produced between an outer and an inner winding of the tape pack after 2-week storage of the cartridge in a dry environment at 60° C. is 60 nm or smaller.

Abstract: A magnetic tape cartridge including a reel and a pack of magnetic tape wound onto the reel, the magnetic tape includes an aromatic polyamide support and has a thickness of from 3.5 to 5.5 ?m and a length of 1000 m or more, and a difference in tape thickness produced between an outer and an inner winding of the tape pack after 2-week storage of the cartridge in a dry environment at 60° C. is 60 nm or smaller.

Abstract: A magnetic recording tape comprising a nonmagnetic support and a magnetic layer containing ferromagnetic powder and a binder, wherein the nonmagnetic support has an intrinsic viscosity of from 0.40 to 0.60 dl/g and a number average molecular weight of from 12,000 to 24,000, and a distance between an apex of a maximum convexity and a valley of a maximum concavity of the nonmagnetic support on a cross section of an edge of the tape made by cutting the tape in a transverse direction is 2 ?m or less in the transverse direction.

Abstract: A magnetic recording medium comprising: a magnetic layer containing ferromagnetic powder and a binder; a nonmagnetic support; and a back coat layer, in this order, wherein the nonmagnetic support contains polyester having an intrinsic viscosity of from 0.40 to 0.60 dl/g and a number average molecular weight of from 12,000 to 24,000, a surface of the magnetic layer on a side not having the nonmagnetic support has a surface roughness Ra of from 1 to 5 nm, and a surface of the back coat layer on a side not having the nonmagnetic support has a surface roughness Ra of from 6 to 20 nm.

Abstract: A magnetic recording medium for being used in a write/read system in which a difference of track width between write track width and read track width is smaller than 10 ?m, which comprises: a magnetic layer containing ferromagnetic powder and a binder; a nonmagnetic support; and a backcoating layer, in this order, at least one of the magnetic layer and the backcoating layer having servo signals for tracking control pre-recorded therein, wherein the nonmagnetic support is a film of a polyester having an intrinsic viscosity of 0.40 to 0.60 dl/g and a number average molecular weight of 12000 to 24000.