US 12,298,710 B2
Toner for developing electrostatic charge image
Yuta Izumiya, Wakayama (JP); and Shogo Nomoto, Wakayama (JP)
Assigned to KAO CORPORATION, Tokyo (JP)
Appl. No. 17/641,771
Filed by KAO CORPORATION, Tokyo (JP)
PCT Filed Sep. 11, 2020, PCT No. PCT/JP2020/034447
§ 371(c)(1), (2) Date Mar. 9, 2022,
PCT Pub. No. WO2021/049607, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 2019-167618 (JP), filed on Sep. 13, 2019.
Prior Publication US 2022/0413408 A1, Dec. 29, 2022
Int. Cl. G03G 9/087 (2006.01); G03G 9/08 (2006.01); G03G 9/09 (2006.01)
CPC G03G 9/08755 (2013.01) [G03G 9/081 (2013.01); G03G 9/08768 (2013.01); G03G 9/08782 (2013.01); G03G 9/0906 (2013.01)] 18 Claims
 
1. A toner for development of electrostatic images, comprising:
a colorant;
a resin composition (P);
a resin composition (W); and
an amorphous polyester-based resin (B),
wherein:
the resin composition (P) is a resin composition formed by subjecting an acid group-containing amorphous polyester-based resin (A) and an amine compound to a condensation reaction,
the resin composition (W) is a resin composition formed by subjecting an alcohol component (W-al), a carboxylic acid component (W-ac), and a hydrocarbon wax comprising at least one functional group selected from the group consisting of a hydroxy group and a carboxy group to a condensation reaction, and
the amorphous polyester-based resin (B) has a softening point that is higher than 120° C. and not higher than 170° C.