US 12,332,599 B2
Toner
Miki Ueda, Tokyo (JP); Takeshi Hashimoto, Ibaraki (JP); Kazuki Murata, Tokyo (JP); Megumi Shino, Chiba (JP); Yukihiro Abe, Chiba (JP); and Hayato Ida, Ibaraki (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on May 18, 2022, as Appl. No. 17/663,935.
Claims priority of application No. 2021-098008 (JP), filed on Jun. 11, 2021; and application No. 2022-077314 (JP), filed on May 10, 2022.
Prior Publication US 2022/0404727 A1, Dec. 22, 2022
Int. Cl. G03G 9/087 (2006.01)
CPC G03G 9/08746 (2013.01) 12 Claims
 
1. A toner, comprising:
a toner particle containing a binder resin and an inorganic fine particle;
the binder resin containing a crystalline resin having a first monomer unit represented by formula (1)

OG Complex Work Unit Chemistry
where RZ1 represents a hydrogen atom or a methyl group, and R1 represents an alkyl group having 18 to 36 carbon atoms;
the inorganic fine particle being at least one member particle selected from the group consisting of a particle containing CaCO3, a particle containing BaSO4, a particle containing Mg3Si4O10(OH)2 and a particle containing Al2Si2O5(OH)4, wherein
the inorganic fine particle is treated with a fatty acid,
a content B of the inorganic fine particle in the toner particle is 1.0 to 15.0 mass %, and
the inorganic fine particle has a BET specific surface area of 4.5 to 25.0 m2/g.