US 12,405,546 B2
Toner
Shohei Kototani, Shizuoka (JP); Takashi Kenmoku, Shizuoka (JP); Noritaka Toyoizumi, Shizuoka (JP); Yoshiaki Shiotari, Shizuoka (JP); and Mayumi Inoue, Shizuoka (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 15, 2021, as Appl. No. 17/502,771.
Claims priority of application No. 2020-178438 (JP), filed on Oct. 23, 2020.
Prior Publication US 2022/0128918 A1, Apr. 28, 2022
Int. Cl. G03G 9/08 (2006.01); G03G 9/087 (2006.01); G03G 9/097 (2006.01)
CPC G03G 9/09775 (2013.01) [G03G 9/0819 (2013.01); G03G 9/0823 (2013.01); G03G 9/08711 (2013.01); G03G 9/08755 (2013.01)] 13 Claims
 
1. A toner comprising a toner particle comprising a binder resin,
wherein the toner particle comprises a condensation product of an organosilicon compound,
in time-of-flight secondary ion mass spectrometry TOF-SIMS of the toner particle,
a normalized intensity of silicon ions (m/z 28) derived from the condensation product of the organosilicon compound, which is given by Expression (I) below, is from 7.00×10−4 to 3.00×10−2;
Silicon ion normalized intensity(m/z 28)={ion intensity(m/z 28) of silicon ions}/{total ion intensity of m/z from 0.5 to 1850}  (I),
a normalized intensity of silicon ions (m/z 28) by time-of-flight secondary ion mass spectrometry after sputtering the toner particle by an Ar gas cluster ion beam Ar-GCIB under condition (A) below is 6.99×10−4 or lower;
(A) acceleration voltage: 5 kV, current: 6.5 nA, raster size: 600×600 μm, irradiation time: 5 sec/cycle, sputtering time: 250 sec,
the toner comprises a fine particle on the surface of the toner particle, and
the fine particle has at least one selected from the group consisting of fine particle of a polyhydric acid metal salt, which is a reaction product of a compound comprising at least one of Ti and Al elements and a polyhydric acid, a strontium titanate fine particle, a titanium oxide fine particle and an aluminum oxide fine particle.