US 12,326,690 B2
Toner and method for producing toner
Kazuki Murata, Tokyo (JP); Takeshi Hashimoto, Ibaraki (JP); Yukihiro Abe, Chiba (JP); Miki Ueda, Tokyo (JP); and Hayato Ida, Ibaraki (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 11, 2022, as Appl. No. 17/654,481.
Claims priority of application No. 2021-045565 (JP), filed on Mar. 19, 2021.
Prior Publication US 2022/0299901 A1, Sep. 22, 2022
Int. Cl. G03G 9/08 (2006.01); G03G 9/087 (2006.01)
CPC G03G 9/0825 (2013.01) [G03G 9/0815 (2013.01); G03G 9/0819 (2013.01); G03G 9/08711 (2013.01); G03G 9/08755 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A toner, comprising:
a toner particle comprising a binder resin;
the binder resin comprising a first resin and a second resin;
the first resin being a crystalline resin;
the second resin being an amorphous resin; and
a matrix-domain structure composed of a matrix comprising the first resin and domains comprising the second resin is present when a cross section of the toner particle is observed with a transmission electron microscope, with an area ratio occupied by the matrix in a total area of the matrix and the domains being 35 to 70 area %, wherein
a ratio [hydrocarbon group index (Ge)]/[hydrocarbon group index (DIA)] after washing the toner with hexane is 1.10 or more,
the hydrocarbon group index (Ge) is a value of A (Ge)/B (Ge) where A (Ge) is a maximum absorption peak intensity in a range of 2800 to 2900 cm−1 corresponding to a stretching vibration of C—H and B (Ge) is a maximum absorption peak intensity in a range of 1500 to 1800 cm−1 corresponding to a stretching vibration of C═O in an FT-IR spectrum obtained by using Ge as an ATR crystal and performing measurements by an ATR method under condition of an infrared light incident angle being 45°, and
the hydrocarbon group index (DIA) is a value of A (DIA)/B (DIA) where A (DIA) is a maximum absorption peak intensity in a range of 2800 to 2900 cm−1 corresponding to the stretching vibration of C—H and B (DIA) is a maximum absorption peak intensity in a range of 1500 to 1800 cm−1 corresponding to the stretching vibration of C═O in an FT-IR spectrum obtained by using diamond as an ATR crystal and performing measurements by the ATR method under condition of the infrared light incident angle being 45°.