Abstract: A toner comprising a toner particle comprising a binder resin and organosilicon polymer particles on a surface of the toner particle, wherein the binder resin comprising an amorphous resin and a crystalline polyester resin, an absolute value |SPcpes?SPsi| of a difference between an SP value (SPsi) of the organosilicon polymer particles and an SP value (SPcpes) of the crystalline polyester resin is not more than 2.00 (cal/cm3)1/2, and an amount of adsorbed water in the organosilicon polymer particles at a temperature of 30° C. and a humidity of 80% RH is not more than 20 mg/g.

Abstract: A toner is provided, which has a toner particle that contains a binder resin, and organosilicon polymer particle on a surface of the toner particle. A methanol concentration a (vol %) of the organosilicon polymer particle in a wettability test and a methanol concentration b (vol %) of the toner particle in a wettability test satisfy Expression (I) below: |a?b|?25??(I), and an adhesion index of the organosilicon polymer particle on a polycarbonate film, calculated on the basis of Expression (II) below, is not more than 3.5: Adhesion index=area ratio c of the organosilicon polymer particle having migrated to the polycarbonate film/coverage ratio d of the organosilicon polymer particle on the surface of the toner particle×100??(II).

Abstract: A toner comprising a toner particle comprising a binder resin, and an external additive, wherein the toner particle further comprises a monohydric aliphatic alcohol, the monohydric aliphatic alcohol has 8 to 18 carbon atoms, a content ratio of the monohydric aliphatic alcohol extracted from the toner with ethanol is 30 to 300 ppm by mass in the toner, and the external additive comprises at least one selected from the group consisting of hydrotalcite particles and alumina particles.

Abstract: A toner comprising a toner particle comprising a binder resin, wherein the toner particle further comprises: a compound represented by R1—[OCH2CH2]n—OH, where, R1 represents a linear or branched alkyl group having 8 to 22 carbon atoms, and n is an integer of 1 to 3; and at least one polyvalent element selected from the group consisting of magnesium, calcium, aluminum, boron and iron, and a content of the polyvalent element in the toner is 100 mass ppm to 5000 mass ppm.

Abstract: A toner comprising a toner particle comprising a binder resin, wherein the toner particle further comprises a monohydric aliphatic alcohol, and an anionic surfactant having an alkyl group, the binder resin comprises a polyester resin, a carbon number of the monohydric aliphatic alcohol is 8 to 18, a content of the monohydric aliphatic alcohol when extracted from the toner with ethanol is 30 to 300 ppm by mass in the toner, and a value of a ratio (molar ratio) of the monohydric aliphatic alcohol extracted from the toner with ethanol relative to the anionic surfactant having an alkyl group extracted from the toner with methanol is 0.01 to 0.60.

Abstract: 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; 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.

Abstract: Provided is a positive-charging toner having a toner particle that contains a binder resin, the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters having a C18 to C36 alkyl group, the content of the first monomer unit in the polymer A is 5.0 to 60.0 mol % and the content of the second monomer unit is 20.0 to 95.0 mol %, SP11 of the first monomer unit and SP21 of the second monomer unit satisfy 3.00?(SP21?SP11)?25.00, and the work function of the toner is 5.0 to 5.4 V.

Abstract: A toner including a toner particle that contains a binder resin and inorganic fine particles, wherein the binder resin contains a polymer A that includes a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer; the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylate esters having an alkyl group having 18 to 36 carbons; the SP value of the first monomer unit and the SP value of the second monomer unit satisfy a specified relationship; each of the inorganic fine particles contains a substrate containing at least one inorganic element selected from metal elements and metalloid elements, and a coating layer; and the coating layer has a specified structure.

Abstract: A toner is provided, which has a toner particle that contains a binder resin, and organosilicon polymer particle on a surface of the toner particle. A methanol concentration a (vol %) of the organosilicon polymer particle in a wettability test and a methanol concentration b (vol %) of the toner particle in a wettability test satisfy Expression (I) below: |a?b|?25??(I), and an adhesion index of the organosilicon polymer particle on a polycarbonate film, calculated on the basis of Expression (II) below, is not more than 3.

Abstract: A toner comprising a toner particle comprising a binder resin and organosilicon polymer particles on a surface of the toner particle, wherein the binder resin comprising an amorphous resin and a crystalline polyester resin, an absolute value |SPcpes?SPsi| of a difference between an SP value (SPsi) of the organosilicon polymer particles and an SP value (SPcpes) of the crystalline polyester resin is not more than 2.00 (cal/cm3)1/2, and an amount of adsorbed water in the organosilicon polymer particles at a temperature of 30° C. and a humidity of 80% RH is not more than 20 mg/g.

Abstract: A toner comprising a toner particle and an external additive on a surface of the toner particle, wherein the toner particle comprises a core particle containing a binder resin and a shell layer on a surface of the core particle, the shell layer comprises a compound containing nitrogen atoms, the external additive comprises an organosilicon polymer particle, and a difference between the work function Wa of the organosilicon polymer particle and the work function Wb of the toner particle satisfies the following formula (A): 0.00 eV<Wa?Wb?0.

Abstract: A toner comprising: a toner particle that comprises a core particle comprising a binder resin, and a shell layer comprising a thermoplastic resin on a surface of the core particle; and organosilicon polymer particles on a surface of the toner particle, wherein a peak top molecular weight of the thermoplastic resin, according to measurement by gel permeation chromatography, is 30000 to 500000, a number-average primary particle diameter of the organosilicon polymer particles is 10 nm to 500 nm, and an absolute value of a difference (?SP) between an SP value (SPSi) of the organosilicon polymer particles and an SP value (SPSh) of the thermoplastic resin present in the shell layer is not more than 2.30.

Abstract: A toner comprising a toner particle including a binder resin and a colorant and an external additive, wherein the external additive contains an external additive A having a Feret diameter of 60 to 200 nm, the external additive A is inorganic fine particles or organic-inorganic composite fine particles, adhesion index of the external additive A to the toner is 0.00 to 3.00, and penetration depth b and protrusion height c satisfy Relational expressions (1) and (2) below, where b (nm) denotes penetration depth of the external additive A, at a portion of the external additive A penetrating into the toner particle interior from the surface thereof, and c (nm) denotes a protrusion height of the external additive A at that portion, in an observation of an image resulting from image processing of a cross section of the toner using TEM; 60?b+c?200??(1), 0.15?b/(b+c)?0.30??(2).

Abstract: A toner comprising a toner particle containing a resin component, wherein the resin component contains an amorphous polyester and a crystalline polyester, and in depth profile measurement of secondary ions on the toner particle surface by TOF-SIMS, given Ia(t) as the intensity of secondary ions derived from the amorphous polyester, Ic(t) as the intensity of secondary ions derived from the crystalline polyester, and I(t) as the total detected intensity of secondary ions derived from resin contained in the toner particle at a depth of t (nm) from the toner particle surface, the following formulae are satisfied within the range of 0?t?10: Ia(t)>Ic(t)>0.0000 (Ia(t)+Ic(t))/I(t)?0.80 and there is only one point of intersection between the depth profile curve of Ia(t) and Ic(t) within the range of 10?t?30.

Abstract: A toner including a toner particle that contains a binder resin and inorganic fine particles, wherein the binder resin contains a polymer A that includes a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer; the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylate esters having an alkyl group having 18 to 36 carbons; the SP value of the first monomer unit and the SP value of the second monomer unit satisfy a specified relationship; each of the inorganic fine particles contains a substrate containing at least one inorganic element selected from metal elements and metalloid elements, and a coating layer; and the coating layer has a specified structure.

Abstract: A toner comprising a toner particle containing a resin component, wherein the resin component contains an amorphous polyester and a crystalline polyester, and in depth profile measurement of secondary ions on the toner particle surface by TOF-SIMS, given Ia(t) as the intensity of secondary ions derived from the amorphous polyester, Ic(t) as the intensity of secondary ions derived from the crystalline polyester, and I(t) as the total detected intensity of secondary ions derived from resin contained in the toner particle at a depth oft (nm) from the toner particle surface, the following formulae are satisfied within the range of 0?t?10: Ia(t)>Ic(t)>0.0000 (Ia(t)+Ic(t))/I(t)?0.80 and there is only one point of intersection between the depth profile curve of Ia(t) and Ic(t) within the range of 10?t?30.

Abstract: Provided is a positive-charging toner having a toner particle that contains a binder resin, the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters having a C18 to C36 alkyl group, the content of the first monomer unit in the polymer A is 5.0 to 60.0 mol % and the content of the second monomer unit is 20.0 to 95.0 mol %, SP11 of the first monomer unit and SP21 of the second monomer unit satisfy 3.00?(SP21?SP11)?25.00, and the work function of the toner is 5.0 to 5.4 V.

Abstract: Provided is a positive-charging toner having a toner particle that contains a binder resin, the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters having a C18 to C36 alkyl group, the content of the first monomer unit in the polymer A is 5.0 to 60.0 mol % and the content of the second monomer unit is 20.0 to 95.0 mol %, SP11 of the first monomer unit and SP21 of the second monomer unit satisfy 3.00?(SP21?SP11)?25.00, and the work function of the toner is 5.0 to 5.4 V.

Abstract: A toner comprising a toner particle including a binder resin and a colorant and an external additive, wherein the external additive contains an external additive A having a Feret diameter of 60 to 200 nm, the external additive A is inorganic fine particles or organic-inorganic composite fine particles, adhesion index of the external additive A to the toner is 0.00 to 3.00, and penetration depth b and protrusion height c satisfy Relational expressions (1) and (2) below, where b (nm) denotes penetration depth of the external additive A, at a portion of the external additive A penetrating into the toner particle interior from the surface thereof, and c (nm) denotes a protrusion height of the external additive A at that portion, in an observation of an image resulting from image processing of a cross section of the toner using TEM; 60?b+c?200??(1), 0.15?b/(b+c)?0.30??(2).

Abstract: Provided is a positive-charging toner having a toner particle that contains a binder resin, the binder resin contains a polymer A having a first monomer unit derived from a first polymerizable monomer, and a second monomer unit derived from a second polymerizable monomer, the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylic acid esters having a C18 to C36 alkyl group, the content of the first monomer unit in the polymer A is 5.0 to 60.0 mol % and the content of the second monomer unit is 20.0 to 95.0 mol %, SP11 of the first monomer unit and SP21 of the second monomer unit satisfy 3.00?(SP21?SP11)?25.00, and the work function of the toner is 5.0 to 5.4 V.