公开(公告)号：US20170205723A1

公开(公告)日：2017-07-20

申请号：US15408887

申请日：2017-01-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Takuya KITABATAKE ,  Fusaki FUJIBAYASHI ,  Hiroko ENDO ,  Masahide YAMADA ,  Kensuke KUBO

IPC: G03G9/09 ,  G03G9/087 ,  G03G9/08

CPC classification number: G03G9/0902 ,  G03G9/0804 ,  G03G9/0815 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/0926

Abstract: A toner for developing electrostatic images includes a binder, a colorant, iron, silicon, and sulfur. The colorant includes a phosphor and a non-fluorescent colorant. The phosphor includes either one or both of a nitride and an oxynitride each including an alkaline-earth metal, silicon, and an activator element. A volume average particle diameter of the phosphor is greater than or equal to about 50 nm and less than or equal to about 400 nm. An internal quantum efficiency of the phosphor at an excitation wavelength of 450 nm is greater than or equal to about 60%.