Toner
Provided is a toner containing a toner particle comprising a binder resin and an organosilicon polymer, wherein the organosilicon polymer contains an organosilicon polymer particle, the organosilicon polymer particle has a structure represented by the following formula (1): R 1 —SiO 3/2 (1) in formula (1), R 1 is a C 1-4 alkyl group, and in cross-sectional observation of the toner particle by transmission electron microscopy, the organosilicon polymer particle is present in a region extending up to 80% of the distance A from the centroid out of the total distance A from the centroid of the toner particle cross-section to the contour of the cross-section, and the particle diameter of the organosilicon polymer particle is from 10 nm to 200 nm.
1. A toner, comprising:
a toner particle that contains a binder resin and an organosilicon polymer;
the organosilicon polymer comprising an organosilicon polymer particle having a particle diameter of 10-200 nm, the organosilicon polymer particle having a structure represented by formula (1)
R 1 —SiO 3/2 (1)
where R 1 is a C 14 alkyl group, wherein
a ratio of a peak area of the structure represented by formula (1) to a total peak area of the organosilicon polymer in 29 Si-NMR measurement of a tetrahydrofuran-insoluble component of the toner particle is 0.60 to 0.90,
the organosilicon polymer particle is contained in the tetrahydrofuran-insoluble component, and
the organosilicon polymer particle is present in a region extending up to 80% of distance A from the centroid of the toner particle cross-section in cross-sectional observation of the toner particle by transmission electron microscopy, where A is the distance from the centroid to the cross-section contour.
2. The toner according to claim 1 , wherein the content of the organosilicon polymer is 0.05 to 5.00 mass % of the toner particle.
3. The toner according to claim 1 , wherein |SPb−SPs|≤1.0 when SPb is the SP value of the binder resin and SPs is the SP value of the organosilicon polymer particle.
4. The toner according to claim 1 , wherein the toner particle comprises the organosilicon polymer on the toner particle surface.
5. The toner according to claim 1 , wherein the toner particle comprises an organosilicon polymer having a structure represented by formula (1) on its surface.
6. The toner according to claim 1 , wherein the content of the organosilicon polymer particle is 0.05 to 1.50 mass % of the toner particle.
7. The toner according to claim 1 , wherein R 1 is a C 1-2 alkyl group.