Abstract: The present invention provides an actinic ray-sensitive or radiation-sensitive resin composition which is excellent in LER performance and a collapse suppressing ability. Furthermore, the present invention provides a resist film, a pattern forming method, and a method for manufacturing an electronic device. The actinic ray-sensitive or radiation-sensitive resin composition of an embodiment of the present invention includes a resin having a polarity that increases by the action of an acid; and a compound that generates an acid upon irradiation with actinic rays or radiation, in which the resin has a repeating unit represented by General Formula (B-1).

Abstract: Provided is a toner including toner particles, each toner particle includes: a base particle including a binder resin; and external additive particles, wherein the external additive particles include particles each having an equivalent circle diameter of 10 nm or greater, a volume average particle diameter of the particles each having an equivalent circle diameter of 10 nm or greater is 80 nm or greater but 140 nm or less, and a ratio (circumscribed circle area/particle area) of a circumscribed circle area of the particle having an equivalent circle diameter of 10 nm or greater to a particle area of the particle having an equivalent circle diameter of 10 nm or greater is 1.60 or greater but 2.60 or less.

Abstract: An object of the present invention is to provide an actinic ray-sensitive or radiation-sensitive resin composition with which a pattern thus formed has excellent LER and collapse suppressing ability. Furthermore, another object of the present invention is to provide a resist film, a pattern forming method, a method for manufacturing an electronic device, each using the actinic ray-sensitive or radiation-sensitive resin composition. In addition, still another object of the present invention is to provide a resin which can be used in the actinic ray-sensitive or radiation-sensitive resin composition.

Abstract: A toner including a strontium titanate powdery material as an external additive, the strontium titanate powdery material including Si-containing particles on a surface of the strontium titanate powdery material, the Si-containing particles having a number average circle equivalent diameter of 5 nm or more but 15 nm or less.

Abstract: A toner is provided. The toner comprises a maleic-acid-modified polyolefin having a polypropylene block in a main chain and having a weight average molecular weight of 60,000 or more.

Abstract: The present invention provides an actinic ray-sensitive or radiation-sensitive resin composition that can provide a resist film with excellent sensitivity and a pattern with excellent LER performance, and can suppress pattern collapse during pattern formation. In addition, the present invention also provides a resist film, a pattern forming method, a mask blank with a resist film, a method for producing a photomask, and a method for manufacturing an electronic device, each using the actinic ray-sensitive or radiation-sensitive resin composition.

Abstract: Provided is a method for forming a flying body using optical vortex laser, the method including irradiating an opposite surface of a base to a surface of the base, on which a light-absorbing material is disposed, with an optical vortex laser beam to generate a liquid column or liquid droplet having a diameter smaller than an irradiation diameter of the optical vortex laser beam from the light-absorbing material in an irradiation direction of the optical vortex laser beam.

Abstract: An actinic ray-sensitive or radiation-sensitive resin composition is an actinic ray-sensitive or radiation-sensitive resin composition including a compound that generates an acid upon irradiation with actinic rays or radiation and a resin capable of increasing polarity by the action of an acid, in which the resin includes a repeating unit represented by General Formula (B-1) and at least one halogen atom selected from the group consisting of a fluorine atom and an iodine atom.

Abstract: An actinic ray-sensitive or radiation-sensitive resin composition includes a resin having a group represented by General Formula (1) and a compound that generates an acid upon irradiation with actinic rays or radiation.

Abstract: A toner is provided. The toner includes at least two types of polyester resins and a release agent. When the toner is subjected to a dynamic viscoelasticity measurement at a frequency of 6.28 rad/sec to obtain a temperature-dependent curve of loss tangent (tan ?), and the temperature-dependent curve is differentiated one time with temperature, a resulting curve has a maximum value of 0.07 or more and a minimum value of 0.025 or less within a temperature range of from 85° C. to 110° C. When the toner is subjected to a differential scanning calorimetry (DSC), an endothermic amount measured in a first temperature rising in the DSC is 3.5 J/g or less within a temperature range of from 85° C. to 120° C.

Abstract: A toner comprising a binder resin and a near-infrared light absorbing material is provided. The toner in the form of a pellet has: a chroma C* of 20 or less in the L*C*h color space; a hue angle h of from 50 to 90 degrees in the L*C*h color space; and a spectral reflectance of 5% or less at a wavelength of from 800 to 900 nm.

Abstract: A toner is provided. The toner comprises mother particles and an external additive covering the mother particles. The mother particles comprise a binder resin, and the external additive comprises inorganic particles. The inorganic particles comprise small-size inorganic particles having an equivalent circle diameter of from 30 to 70 nm and large-size inorganic particles having an equivalent circle diameter of from 150 to 200 nm and a circularity of 0.85 or more. The large-size inorganic particles are 20 to 70 in number per 100 ?m2 image area of the toner observed with a field-emission scanning electron microscope.

Abstract: A toner, where a diffraction peak of the toner as measured by X-ray diffraction spectroscopy is present at least in a region where 2? is from 20° through 25°, and a difference between Tg1 and Tg2 is 10° C. or less, where Tg1 is a glass transition temperature of the toner, as observed in a last heating step, when heating and cooling are performed on the toner by means of a differential scanning calorimeter (DSC) under the heating and cooling conditions 1 defined in the specification, and Tg2 is a glass transition temperature of the toner, as observed in a last heating step, when heating and cooling are performed on the toner by means of the differential scanning calorimeter (DSC) under the heating and cooling conditions 2 defined in the specification.

Abstract: A photosensitive composition for EUV light includes a predetermined resin and a photoacid generator, or includes a predetermined resin having a repeating unit having a photoacid generating group, and satisfies Conditions 1 and 2, Condition 1: The A value determined by Formula (1) is 0.14 or more, A=([H]×0.04+[C]×1.0+[N]×2.1+[O]×3.6+[F]×5.6+[S]×1.5+[I]×39.5)/([H]×1+[C]×12+[N]×14+[O]×16+[F]×19+[S]×32+[I]×127)??Formula (1): Condition 2: The concentration of the solid content in the photosensitive composition for EUV light is 2.5% by mass or less.

Abstract: A toner comprising a binder resin and a near-infrared light absorbing material is provided. The toner in the form of a pellet has: a chroma C* of 20 or less in the L*C*h color space; a hue angle h of from 50 to 90 degrees in the L*C*h color space; and a spectral reflectance of 5% or less at a wavelength of from 800 to 900 nm.

Abstract: A toner is provided. The toner comprises mother particles and an external additive covering the mother particles. The mother particles comprise a binder resin, and the external additive comprises inorganic particles. The inorganic particles comprise small-size inorganic particles having an equivalent circle diameter of from 30 to 70 nm and large-size inorganic particles having an equivalent circle diameter of from 150 to 200 nm and a circularity of 0.85 or more. The large-size inorganic particles are 20 to 70 in number per 100 ?m2 image area of the toner observed with a field-emission scanning electron microscope.

Abstract: By a method for producing a resin, a resin containing a repeating unit represented by General Formula (1) and a repeating unit containing a group that decomposes by the action of an acid to generate a polar group is produced, and the method includes a first step of obtaining a resin precursor containing a repeating unit represented by General Formula (2) and the repeating unit containing a group that decomposes by the action of an acid to generate a polar group, and a second step of obtaining the repeating unit represented by General Formula (1) by deprotecting a group represented by —OY in the repeating unit represented by General Formula (2) in the resin precursor with an acid or a base.

Abstract: Provided is an actinic ray-sensitive or radiation-sensitive resin composition including: (A) a resin including a repeating unit (a) represented by Formula (1); (B) a compound that generates an acid by irradiation with actinic rays or radiation; and (C) an organic solvent. A concentration of solid contents of the actinic ray-sensitive or radiation-sensitive resin composition is 4 mass % or less. (in the formula, R11 and R12 each independently represent a hydrogen atom, a halogen atom, or a monovalent organic group. R13 represents a hydrogen atom, a halogen atom, or a monovalent organic group or is a single bond or an alkylene group, and is bonded to L or Ar in the formula to form a ring. L represents a single bond or a divalent linking group. Ar represents an aromatic ring group. n represents an integer of 2 or more.

Abstract: There is provided a resist composition containing a resin. The resin includes a repeating unit (a) having one or more *—OY0 groups substituted for an aromatic ring; and a phenolic hydroxyl group (b) or a partial structure (c) represented by Formula (X). Here, the *—OY0 group is a group that is decomposed due to an action of an acid to generate a phenolic hydroxyl group, and Y0 is a specific protective group. In a case where the repeating unit (a) includes none of the phenolic hydroxyl group (b) and the partial structure (c), the repeating unit (a) is a repeating unit in which the *—OY0 group is decomposed due to an action of an acid to generate two or more phenolic hydroxyl groups.

Abstract: Provided is an actinic ray-sensitive or radiation-sensitive resin composition containing a resin and a compound that generates acid due to irradiation with an actinic ray or radiation. The resin includes a repeating unit (a) represented by Formula (I-1) and a repeating unit (b) having a group in which a protective group including a monocyclic ring leaves due to an action of an acid to generate a polar group. (In the formula, R11 and R12 each independently represent a hydrogen atom or an alkyl group. R13 represents a hydrogen atom or an alkyl group, or is a single bond or an alkylene group, and is bonded to L or Ar in the formula to form a ring. L represents a single bond or a divalent linking group. Ar represents an aromatic ring. n represents an integer of 2 or more.