Abstract: Toner, including: a toner particle that contains a binder resin and a wax, wherein the binder resin includes an amorphous resin A, and, in dynamic viscoelasticity measurement of the toner, when the temperature at which the loss elastic modulus G? measured at a frequency of 1 Hz becomes 1.00×106 Pa is set as T(1 Hz), when the temperature at which the loss elastic modulus G? measured at a frequency of 20 Hz becomes 1.00×106 Pa is set as T(20 Hz), and when the maximum value of the ratio (tan ?) of the loss elastic modulus G? with respect to the storage elastic modulus G?, measured at a frequency of 20 Hz, in a range of from 60° C. to 90° C. is set as tan ?(P), the toner satisfies T(20 Hz)?T(1 Hz)?7.0° C., 0.80?tan ?(P)?1.90, 60° C.?T(1 Hz)?80° C., and 60° C.?T(20 Hz)?80° C.

Abstract: A toner, including a toner particle that contains a binder resin and a release agent, wherein the binder resin contains a polymer A, the polymer A including a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer different from the first polymerizable monomer; the first polymerizable monomer is selected from (meth)acrylic acid esters having a C18-36 alkyl group; the toner has a first monomer unit content and a second monomer unit content in the polymer A which are within specific ranges, and assuming that an SP value of the first monomer unit is taken as SP11 and an SP value of the second monomer unit is taken as SP21, the formula (1) below is satisfied, and the molecular weight of the release agent is at least 1,000. 3.00?(SP21?SP11)?25.

Abstract: Provided is a toner has a toner particle containing a binder resin and is characterized in that the binder resin contains a polymer A, which is a polymer of a composition containing a first polymerizable monomer, a second polymerizable monomer and a crosslinking agent, the first polymerizable monomer is at least one monomer selected from the group consisting of (meth)acrylic acid esters having an alkyl group with 18 to 36 carbon atoms, the crosslinking agent has two or more polymerizable double bonds, a content of the first polymerizable monomer in the composition is 5.0 to 60.0 mol %, a content of the second polymerizable monomer is 20.0 to 95.0 mol %, and when the SP values of the first polymerizable monomer, the second polymerizable monomer and the crosslinking agent are denoted by SP12, SP22 and SPC2, respectively, the formulae 0.60?(SP22?SP12)?15.00 and SP12<SPC2<(SP22+3.00) are satisfied.

Abstract: Provided is a toner has a toner particle containing a binder resin and is characterized in that the binder resin contains a polymer A, which is a polymer of a composition containing a first polymerizable monomer, a second polymerizable monomer and a crosslinking agent, the first polymerizable monomer is at least one monomer selected from the group consisting of (meth)acrylic acid esters having an alkyl group with 18 to 36 carbon atoms, the crosslinking agent has two or more polymerizable double bonds, a content of the first polymerizable monomer in the composition is 5.0 to 60.0 mol %, a content of the second polymerizable monomer is 20.0 to 95.0 mol %, and when the SP values of the first polymerizable monomer, the second polymerizable monomer and the crosslinking agent are denoted by SP12, SP22 and SPC2, respectively, the formulae 0.60?(SP22?SP12)?15.00 and SP12<SPC2<(SP22+3.00) are satisfied.

Abstract: Toner, including: a toner particle that contains a binder resin and a wax, wherein the binder resin includes an amorphous resin A, and, in dynamic viscoelasticity measurement of the toner, when the temperature at which the loss elastic modulus G? measured at a frequency of 1 Hz becomes 1.00×106Pa is set as T(1 Hz), when the temperature at which the loss elastic modulus G? measured at a frequency of 20 Hz becomes 1.00×106 Pa is set as T(20 Hz), and when the maximum value of the ratio (tan ?) of the loss elastic modulus G? with respect to the storage elastic modulus G?, measured at a frequency of 20 Hz, in a range of from 60° C. to 90° C. is set as tan ?(P), the toner satisfies T(20 Hz)?T(1 Hz)?7.0° C., 0.80?tan ?(P)?1.90, 60° C.?T(1 Hz)?80° C., and 60° C.?T(20 Hz)?80° C.

Abstract: A toner comprising a binder resin and a colorant, wherein the toner has a Martens hardness, as measured at a maximum load condition of 2.0×10?4 N, of from 200 MPa to 1,100 MPa.

Abstract: A toner, including a toner particle that contains a binder resin and a release agent, wherein the binder resin contains a polymer A, the polymer A including a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer different from the first polymerizable monomer; the first polymerizable monomer is selected from (meth)acrylic acid esters having a C18-36 alkyl group; the toner has a first monomer unit content and a second monomer unit content in the polymer A which are within specific ranges, and assuming that an SP value of the first monomer unit is taken as SP11 and an SP value of the second monomer unit is taken as SP21, the formula (1) below is satisfied, and the molecular weight of the release agent is at least 1,000. 3.00?(SP21?SP11)?25.

Abstract: Provided is a toner has a toner particle containing a binder resin and is characterized in that the binder resin contains a polymer A, which is a polymer of a composition containing a first polymerizable monomer, a second polymerizable monomer and a crosslinking agent, the first polymerizable monomer is at least one monomer selected from the group consisting of (meth)acrylic acid esters having an alkyl group with 18 to 36 carbon atoms, the crosslinking agent has two or more polymerizable double bonds, a content of the first polymerizable monomer in the composition is 5.0 to 60.0 mol %, a content of the second polymerizable monomer is 20.0 to 95.0 mol %, and when the SP values of the first polymerizable monomer, the second polymerizable monomer and the crosslinking agent are denoted by SP12, SP22 and SPC2, respectively, the formulae 0.60?(SP22?SP12)?15.00 and SP12<SPC2<(SP22+3.00) are satisfied.

Abstract: The toner has a toner particle in which a toner core containing a binder resin is coated with a shell layer, wherein the binder resin contains a polymer A that has a first monomer unit and a second monomer unit; the first unit is derived from (meth)acrylate ester having an alkyl group having 18 to 36 carbon atoms; the content of the first monomer unit in the polymer is 5.0 to 60.0 mol %; the content of the second monomer unit is 20.0 to 95.0 mol %; the following formula (1) is satisfied when the SP value of the first unit is denoted by SP11 and the SP value of the second unit is denoted by SP21; and the toner core is coated with a highly uniform shell over at least 90% of the circumference of the toner cross section; 3.00?(SP21?SP11)?25.00??(1).

Abstract: Provided is a toner containing a colorant and a binder resin, wherein, in a wettability test of the toner with respect to a methanol/water mixed solvent, the methanol concentration when the transmittance of light at a wavelength of 780 nm is 50% is at least 5.0 volume % and not more than 30.0 volume %, and the interparticle force measured by rupturing a consolidation of the toner formed by compression of the toner with a load of 78.5 N is at least 1.0 nN and not more than 25.0 nN.

Abstract: Provided is a toner having: a toner particle including a binder resin and a wax A, wherein the binder resin includes at least 50% by mass of a styrene acrylic copolymer in the binder resin, the melting point of the wax A is from 60.0° C. to 100.0° C., the wax A is compatible at 100° C. in an amount of at least 15.0 parts by mass with 100 parts by mass of a styrene-butyl acrylate copolymer, in DSC of the toner, where a peak temperature of a maximum exothermic peak derived from the wax A when cooling from 150° C. to 0° C. is performed at 1.0° C./min is denoted by Tc(1), and a peak temperature of a maximum exothermic peak derived from the wax A when cooling from 150° C. to 0° C. is performed at 20.0° C./min is denoted by Tc(20), 0.0° C.?Tc(1)-Tc(20)?7.0° C. is satisfied.

Abstract: A toner comprising a toner particle that contains a binder resin and a release agent, wherein the toner particle has a surface layer that contains an organosilicon polymer and the luminance histogram of a backscattered electron image of the toner particle has two peak values P1 and P2 and a minimum value V between P1 and P2, P2 originates from the organosilicon polymer, and the luminance giving P1 and P2 are in specific ranges, percentages for P1 and P2 are each at least 0.50%, and using the luminance Bl at V as a reference point, specific relationships are satisfied by A1, AV, and A2, where A1 is the total number of pixels at luminance from 0 to (Bl?30 ), AV is the total number of pixels at luminance from (Bl?29 ) to (Bl+29 ), and A2 is the total number of pixels at luminance from (Bl+30 ) to 255.

Abstract: A toner comprising: a toner particle that contains a binder resin and a wax, wherein the binder resin contains a styrene-acrylic copolymer, the content of the styrene-acrylic copolymer in the binder resin is at least 50 mass %, the wax contains a wax A, at least 15.0 mass parts of the wax A compatibilizes at 100° C. with 100 mass parts of a specific styrene—butyl acrylate copolymer, and in a cross section of the toner particle observed using a scanning transmission electron microscope, domains of the wax are present, the average number of the domains is from 20 to 2,000, and using r1 for the average major diameter of the domains and r2 for the average minor diameter of the domains, r1 is from 0.03 ?m to 1.00 ?m, and the ratio of r1 to r2 is from 1.0 to 3.0.

Abstract: A toner comprising a binder resin and a colorant, wherein the toner has a Martens hardness, as measured at a maximum load condition of 2.0×10?4 N, of from 200 MPa to 1,100 MPa.

Abstract: An image forming apparatus includes an image bearing member, a developing device, and an intermediate transfer member. The developing device includes a toner container containing a toner. The intermediate transfer member is charged to 3.0 nC/g or less in terms of absolute value at the surface thereof. The toner particles include a surface layer, and the brightness histogram of the toner particles has two local maximums P1 and P2 and a local minimum V between P1 and P2. P2 is derived from an organosilicon polymer. P1 lies in a brightness range of 20 to 70, and P2 lies in a brightness range of 130 to 230. The number of pixels of P1 and the number of pixels of P2 are each 0.50% or more relative to the total number of pixels. The total numbers of pixels A1, AV, and A2 each in a specific brightness range satisfy specific relationships.

Abstract: A toner comprising a binder resin and a colorant, wherein the toner has a Martens hardness, as measured at a maximum load condition of 2.0×10?4 N, of from 200 MPa to 1,100 MPa.

Abstract: A toner comprising: a toner particle that contains a binder resin and a wax, wherein the binder resin contains a styrene-acrylic copolymer, the content of the styrene-acrylic copolymer in the binder resin is at least 50 mass %, the wax contains a wax A, at least 15.0 mass parts of the wax A compatibilizes at 100° C. with 100 mass parts of a specific styrene—butyl acrylate copolymer, and in a cross section of the toner particle observed using a scanning transmission electron microscope, domains of the wax are present, the average number of the domains is from 20 to 2,000, and using r1 for the average major diameter of the domains and r2 for the average minor diameter of the domains, r1 is from 0.03 ?m to 1.00 ?m, and the ratio of r1 to r2 is from 1.0 to 3.0.

Abstract: Provided is a toner having: a toner particle including a binder resin and a wax A, wherein the binder resin includes at least 50% by mass of a styrene acrylic copolymer in the binder resin, the melting point of the wax A is from 60.0° C. to 100.0° C., the wax A is compatible at 100° C. in an amount of at least 15.0 parts by mass with 100 parts by mass of a styrene-butyl acrylate copolymer, in DSC of the toner, where a peak temperature of a maximum exothermic peak derived from the wax A when cooling from 150° C. to 0° C. is performed at 1.0° C./min is denoted by Tc(1), and a peak temperature of a maximum exothermic peak derived from the wax A when cooling from 150° C. to 0° C. is performed at 20.0° C./min is denoted by Tc(20), 0.0° C.?Tc(1)-Tc(20)?7.0° C. is satisfied.

Abstract: An image forming apparatus includes an image bearing member, a developing device, and an intermediate transfer member. The developing device includes a toner container containing a toner. The intermediate transfer member is charged to 3.0 nC/g or less in terms of absolute value at the surface thereof. The toner particles include a surface layer, and the brightness histogram of the toner particles has two local maximums P1 and P2 and a local minimum between P1 and P2. P2 is derived from the organosilicon polymer. P1 lies in a brightness range of 20 to 70, and P2 lies in a brightness range of 130 to 230. The number of pixels of P1 and the number of pixels of P2 are each 0.50% or more relative to the total number of pixels. The total numbers of pixels A1, AV, and A2 each in a specific brightness range satisfy specific relationships.

Abstract: A toner comprising a toner particle that contains a binder resin and a release agent, wherein the toner particle has a surface layer that contains an organosilicon polymer and the luminance histogram of a backscattered electron image of the toner particle has two peak values P1 and P2 and a minimum value V between P1 and P2, P2 originates from the organosilicon polymer, and the luminance giving P1 and P2 are in specific ranges, percentages for P1 and P2 are each at least 0.50%, and using the luminance Bl at V as a reference point, specific relationships are satisfied by A1, AV, and A2, where A1 is the total number of pixels at luminance from 0 to (Bl?30), AV is the total number of pixels at luminance from (Bl?29) to (Bl+29), and A2 is the total number of pixels at luminance from (Bl+30) to 255.