The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2026
Filed:
Sep. 08, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Kunihiko Sekido, Shizuoka, JP;
Shuhei Iwasaki, Kanagawa, JP;
Tatsuya Ohsawa, Shizuoka, JP;
Naoyuki Matsumoto, Fukui, JP;
Atsushi Okuda, Kanagawa, JP;
Tsutomu Nishida, Shizuoka, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
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.