Toner

A toner, comprising:

• a toner particle comprising a binder resin and a wax;
• the toner particle having a toner core particle comprising an organosilicon compound segment, and having a protrusion on a surface of the toner core particle;
• and
• the protrusion comprising an organosilicon polymer, wherein
• I/W≤0.050 and E1 is 1.00 to 3.90 GPa where in a horizontal image obtained in cross-sectional observation of the toner particle with a transmission electron microscope by drawing a line along a circumference of the surface of the toner core particle and converting based on the line along the circumference, W (nm) is the length of a reference line defined by a line segment connecting both ends of an interface between the toner core particle and the protrusion, I (nm) is a maximum penetration depth defined by a maximum length of the protrusion in the toner core particle direction from the reference line in the normal direction of the reference line, and E1 is a Young's modulus of the protrusion calculated by Hertz's contact theory, and
• a normalized intensity A is 8.00×10−4 to 4.00×10−2 and a normalized intensity B is 7.99×10−4 or less, where normalized intensity A is a normalized intensity of silicon ions defined by (ionic intensity of silicon ion (m/z=28))/(total ionic intensity at m/z=0.5 to 1850) obtained by measuring the toner core particle with a time-of-flight secondary ion mass spectrometer, and normalized intensity B is a normalized intensity of silicon ions when the toner core particle is sputtered with an argon gas cluster ion beam for 250 sec under conditions of 5 kV acceleration voltage, 6.5 nA current, 600 μm2 raster size and 5 sec/cycle irradiation time.