A toner process including a) mixing reagents comprising at least one amorphous resin, an optional crystalline resin, an optional styrene, acrylate or styrene/acrylate, an optional wax, and an optional colorant to form an emulsion comprising a resin particle; b) adding at least one aggregating agent and aggregating said resin particle to form a nascent toner particle; c) optionally, adding one or more resins to form a shell on said nascent toner particle to yield a core-shell particle; d) adding a first chelating agent and a second chelating agent; wherein said first chelating agent and said second chelating agent are different; e) freezing particle growth to form an aggregated toner particle; f) coalescing said aggregated toner particle to form a toner particle; and g) optionally, collecting said toner particle.

A toner for developing electrostatic images, comprising colored resin particles that contain a binder resin, a colorant and a charge control agent, and external additives, wherein the external additives contain at least an external additive A and an external additive B; wherein the external additive A is metal oxide particles charged to the same polarity as a polarity of the colored resin particles, with a specific charge amount per unit surface area and a specific number average particle diameter; wherein the external additive B is resin particles charged to the opposite polarity to the polarity of the colored resin particles, with a specific number average particle diameter; and wherein a content of the external additive A and a content of the external additive B are in specific ranges.

A toner for developing electrostatic images, comprising colored resin particles that contain a binder resin, a colorant and a charge control agent, and external additives, wherein the external additives contain at least an external additive A and an external additive B; wherein the external additive A is metal oxide particles charged to the same polarity as a polarity of the colored resin particles, with a specific charge amount per unit surface area and a specific number average particle diameter; wherein the external additive B is resin particles charged to the opposite polarity to the polarity of the colored resin particles, with a specific number average particle diameter; and wherein a content of the external additive A and a content of the external additive B are in specific ranges.

A toner includes toner particles, wherein the toner particles contain a polymer containing a structural unit derived from an azobenzene derivative having a polymerizable group.

A toner including a toner particle containing a binder resin and an external additive, wherein the external additive contains composite particles of an organosilicon polymer fine particle and a fatty acid metal salt.

Provided is a toner including a toner particle containing a binder resin, and an external additive, wherein the external additive contains an external additive A and an external additive B, the external additive A is an organosilicon polymer fine particle, the number-average particle diameter of primary particles of the organosilicon polymer fine particle is from 30 to 300 nm, the external additive B is a silica fine particle, the number-average particle diameter of primary particles of the silica fine particle is from 100 to 300 nm, the fixing rate of the external additive A to the toner particle according to a water washing method is less than 30%, and the fixing rate of the external additive B to the toner particle according to the washing method is at least 30%.

Toner comprising a toner particle containing binder resin and colorant, wherein fine particles A (organosilicon polymer particles containing an organosilicon polymer) and fine particles B are present at the toner particle surface, the organosilicon polymer has structure in which Si and O are alternately bonded to each other, portion of Si in the organosilicon polymer has R.sup.1SiO.sub.3/2 structure, and content of the fine particles A, proportion for area of peak originating with silicon having the structure, volume resistivity of the fine particles B, total coverage ratio of the toner particle surface by the fine particles A embedded in the toner particle (A1) and the fine particles A not embedded in the toner particle (A2), percentage for area occupied by the fine particles A2, content of the fine particles B in the toner, and percentage for area occupied by the fine particles B embedded in the toner particle are prescribed range.

A toner comprising an organosilicon polymer particle and a toner particle containing a binder resin and a wax, wherein the organosilicon polymer particle contains an organosilicon polymer, a part of silicon atoms in the organosilicon polymer has a T3 unit structure, a ratio of an area of peaks derived from silicon having the T3 unit structure relative to a total area of peaks derived from all silicon element contained in the organosilicon polymer particle is from 0.70 to 1.00 in .sup.29Si-NMR measurement of the organosilicon polymer particle, a plurality of domains of the wax are present in a cross-section of the toner particle, the wax is an ester wax, the average long diameter of the domains of the ester wax is from 0.03 m to 2.00 m, and the SP value SPw of the wax is from 8.59 to 9.01.

Provided is a toner including a toner particle and an external additive, wherein the external additive includes a composite particle including a hydrotalcite particle covered on the surface with an organosilicon polymer fine particle, a coverage ratio of the hydrotalcite particle surface by the organosilicon polymer fine particle is from 1% to 50%, and given A (nm) as the number-average particle diameter of the primary particles of the organosilicon polymer fine particle and B (nm) as the number-average particle diameter of the primary particles of the hydrotalcite particle, the toner satisfies the following formula (I) and formula (II):

A<B(I)

20A350(II).

A toner comprising: a toner particle containing a binder resin; and an external additive, wherein the external additive comprises an external additive A and B; the external additive A has a number-average primary particle diameter of 35 to 300 nm, a dielectric constant .sub.ra of not more than 3.50, and a shape factor SF-1 of not more than 114, and is an organosilicon polymer particle having a particular T3 unit structure; a proportion for an area of a peak originating from silicon having the T3 unit structure with reference to that of all silicon elements is 0.50 to 1.00; the external additive B has a number-average primary particle diameter of from 5 nm to 25 nm and a dielectric constant .sub.rb that satisfies formula (A): 0.50.sub.rb.sub.ra (A); and a coverage ratio by the external additive B for the toner particle surface is 50% to 100%.