A toner for developing an electrostatic charge image contains toner particles including first toner particles and second toner particles, the first toner particles having a brightness of less than 90 and the second toner particles having a brightness of 90 or more. The second toner particles constitute 0.1% by number or more and 10% by number or less of the toner particles, and, in the size distribution of the second toner particles, toner particles having a diameter equal to or smaller than the number-average diameter Dn of the toner particles constitute 70% by number or more.

A toner for developing an electrostatic charge image contains toner particles containing an amorphous resin and a crystalline resin. The ratio Qs1/Qf1 is 1.1 or more and 2.0 or less, where Qf1 is the total area of all endothermic peaks detected during the first temperature rise when the toner particles are analyzed by differential scanning calorimetry after one-day storage under 50° C. conditions, and Qs1 is the total area of all endothermic peaks detected during the first temperature rise when classified toner particles are analyzed by differential scanning calorimetry after one-day storage under 50° C. conditions. The classified toner particles are a fraction of the toner particles in which toner particles having a diameter equal to or larger than the volume-average diameter D50v of the toner particles constitute 10% by number or less.

A toner for developing an electrostatic charge image contains toner particles that contain binder resins including an amorphous resin and a crystalline resin and also contain an oligomer. The molecular weight distribution curve of the toner measured by gel permeation chromatography has its highest peak in a range of molecular weights from 5000 to 50000 and a peak or shoulder in a range of molecular weights from 500 to 5000. In a cross-sectional observation of the toner particles, domains of the crystalline resin have an average length of major axis of 100 nm or more and 1000 nm or less.

An electrostatic image developing toner includes a toner particle including a binder resin and a release agent. When a cross section of the toner particle is observed, the toner particle satisfies conditions (A) and (B) below: Condition (A): plural domains of the release agent, the domains having a diameter equal to 10% or more and 35% or less of the maximum diameter of the toner particle, are present in the toner particle; and Condition (B): the average of the distances between the centers of gravity of the domains of the release agent is 35% or more and 60% or less of the maximum diameter of the toner particle.

A carrier for developing an electrostatic image includes a magnetic particle and a resin layer with which the magnetic particle is coated and which contains silica particles having an average particle diameter of 50 nm or more and 200 nm or less. In the carrier, a silicon element ratio Si1 in a region in which a distance from a surface of the resin layer in a direction toward an inside is 0.1 μm or more and 0.2 μm or less and a silicon element ratio Si2 in a region in which a distance from a surface of the magnetic particle in a direction toward the surface of the resin layer is 0.0 μm or more and 0.1 μm or less satisfy formula 1-1 and formula 2-1 below.

0.005≤Si1≤2  Formula 1-1

1≤Si1/Si2≤1000  Formula 2-1

An electrostatic image developing toner includes a toner particle including a binder resin and a release agent. When a cross section of the toner particle is observed, the toner particle satisfies a condition (A1) below: Condition (A1): the toner particle includes one or more domains of the release agent, the one or more domains having a diameter equal to 8% or more and 30% or less of the maximum diameter of the toner particle, the one or more domains having a geometric center at a depth of R/2 or less below the surface of the toner particle, where R represents the distance between the geometric center of the toner particle and the surface of the toner particle, the one or more domains being entirely included in an inside portion of the toner particle which extends below a depth of 50 nm from the surface of the toner particle.

An electrostatic image developing toner set includes a brilliant toner having brilliant toner particles that include a binder resin and a brilliant pigment, and a color toner having color toner particles that include a binder resin and a colorant other than the brilliant pigment. The binder resin included in the brilliant toner particles and the binder resin included in the color toner particles are incompatible with each other.

A toner comprising a toner particle comprising a binder resin, wherein the toner particle further comprises a compound represented by a following formula (1) and a pigment having a quinacridone structure;

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where, in the formula (1), R represents a linear or branched alkyl group having 4 to 22 carbon atoms, and n is an integer of 1 to 4.

A toner manufacturing method includes a first step of filtering toner particles obtained by a wet manufacturing method, a second step of squeezing the toner particles and making water pass through the toner particles, and a third step of squeezing the toner particles and ventilating compressed air through the toner particles, in which Condition (1) and Condition (2) are satisfied,

Condition (1): a temperature T of the water passing through the toner particles in the second step satisfies “10° C.≤T≤35° C.”; and

Condition (2): a squeezing pressure P1 in the second step and a squeezing pressure P2 in the third step satisfy “0.2 MPa≤P1<P2≤0.8 MPa”.

Provided is a compound which is fluidized by light irradiation and is less colored. The compound is a compound represented by the following general formula (1), which is fluidized by light irradiation:

R.sub.1—CH═N—R.sub.2  General Formula (1)

wherein R.sub.1 is a substituted or unsubstituted cyclic hydrocarbon group or a substituted or unsubstituted heterocyclic group; and R.sub.2 is a substituted or unsubstituted heterocyclic group containing a nitrogen atom bonded to the nitrogen atom in the general formula (1).