US 11,726,414 B2
Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
Kunihiko Sekido, Shizuoka (JP); and Masashi Nishi, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Apr. 6, 2021, as Appl. No. 17/223,795.
Claims priority of application No. 2020-071958 (JP), filed on Apr. 13, 2020.
Prior Publication US 2021/0318628 A1, Oct. 14, 2021
Int. Cl. G03G 5/043 (2006.01); G03G 5/10 (2006.01); G03G 8/00 (2006.01)
CPC G03G 5/0436 (2013.01) [G03G 5/102 (2013.01); G03G 8/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An electrophotographic photosensitive member, comprising:
a support, a conductive layer, a photosensitive layer and a protective layer in this order;
the protective layer comprising a binding resin and a metal oxide particle;
the metal oxide particle comprising a core bearing a coating layer;
the core comprising titanium oxide; and
the coating layer comprising titanium oxide and niobium, wherein
an abundance ratio of niobium based on a total mass of the coating layer is higher than an abundance ratio of niobium based on a total mass of the core.