公开(公告)号：US20230408941A1

公开(公告)日：2023-12-21

申请号：US18323690

申请日：2023-05-25

Applicant: Konica Minolta, Inc.

Inventor： Yohei MARUYAMA ,  Kazuhiko NAKAJIMA

IPC: G03G9/093

CPC classification number: G03G9/09385 ,  G03G9/09328

Abstract: An electrophotographic toner of the present invention includes a toner mother particle including a bright pigment and a resin layer coating the bright pigment. The bright pigment includes a bright portion and a coating layer coating the bright portion, and when the average thickness of the coating layer is A nm and the average thickness of the resin layer is B nm, the electrophotographic toner satisfies A+B≤1.600 nm.

公开(公告)号：US20220397838A1

公开(公告)日：2022-12-15

申请号：US17659230

申请日：2022-04-14

Applicant: Konica Minolta, Inc.

Inventor： Junya UEDA ,  Yohei MARUYAMA ,  Shinya OBARA

IPC: G03G9/097 ,  G03G9/087 ,  G03G9/08

Abstract: Provided is an electrostatic latent image developing toner including: toner base particles containing a binder resin and a white pigment; and an external additive, wherein silica particles are contained as the external additive, and the following relational expression (1) is satisfied, Relational expression (1): 0.70≤Wh_Si(B)/Wh_Si(A)≤0.95, in the above relational expression (1), Wh_Si (A) represents an NET intensity of a Si element contained in the white electrostatic latent image developing toner measured by wavelength dispersive X-ray fluorescence spectrometer, and Wh_Si (B) represents an NET intensity of a Si element contained in the white electrostatic latent image developing toner that has been ultrasonically dispersed in water.