公开(公告)号：US20240118633A1

公开(公告)日：2024-04-11

申请号：US18463725

申请日：2023-09-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： TATSUYA OHSAWA ,  KUNIHIKO SEKIDO ,  SHUHEI IWASAKI ,  NAOYUKI MATSUMOTO

IPC: G03G5/047 ,  G03G5/06 ,  G03G21/18

CPC classification number: G03G5/047 ,  G03G5/06144 ,  G03G5/06145 ,  G03G5/0696 ,  G03G21/1814

Abstract: An electrophotographic photosensitive member including: a support, a charge generating layer, and a charge transporting layer in this order, wherein the charge transporting layer contains: a compound represented by the formula (A-1), and at least one selected from the group consisting of a compound represented by the formula (A-2) and a compound represented by the formula (A-3).

公开(公告)号：US20240118655A1

公开(公告)日：2024-04-11

申请号：US18463501

申请日：2023-09-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： KUNIHIKO SEKIDO ,  SHUHEI IWASAKI ,  TATSUYA OHSAWA ,  NAOYUKI MATSUMOTO ,  ATSUSHI OKUDA ,  TSUTOMU NISHIDA

IPC: G03G21/18 ,  G03G5/06

CPC classification number: G03G21/1814 ,  G03G5/06145

Abstract: An object of the present disclosure is to provide an electrophotographic photosensitive member with suppressed positive ghosts, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. The present disclosure provides an electrophotographic photosensitive member having a support and a photosensitive layer on the support; the photosensitive layer comprises (α) a compound represented by the formula (1), and (β) at least one selected from the group consisting of a compound represented by the formula (2) and a compound represented by the formula (3), wherein a content of the (β) with respect to a content of the (α) is 50 to 850 mass ppm in the photosensitive layer.

公开(公告)号：US20240111224A1

公开(公告)日：2024-04-04

申请号：US18463749

申请日：2023-09-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： SHUHEI IWASAKI ,  KUNIHIKO SEKIDO ,  TATSUYA OHSAWA ,  NAOYUKI MATSUMOTO

IPC: G03G5/047 ,  G03G5/06 ,  G03G21/18

CPC classification number: G03G5/047 ,  G03G5/06144 ,  G03G5/06145 ,  G03G5/0696 ,  G03G21/1814

Abstract: An object of the present disclosure is to provide an electrophotographic photosensitive member which can suppress the potential fluctuation due to repeated use even with the electrophotographic apparatus of high printing process speed. The present disclosure provides an electrophotographic photosensitive member comprising: a support, a charge generating layer, and a charge transporting layer in this order, wherein the charge transporting layer comprises: (α) a compound represented by the formula (C-1), and (β) at least one selected from the group consisting of a compound represented by the following formula (C-2) and a compound represented by the formula (C-3), wherein a content of the (β) in the charge transporting layer with respect to a total mass of the charge transporting layer is 250 to 610 mass ppm.