US 12,393,130 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 Sep. 7, 2022, as Appl. No. 17/930,206.
Claims priority of application No. 2021-150501 (JP), filed on Sep. 15, 2021; and application No. 2022-132499 (JP), filed on Aug. 23, 2022.
Prior Publication US 2023/0090596 A1, Mar. 23, 2023
Int. Cl. G03G 5/147 (2006.01); G03G 21/18 (2006.01)
CPC G03G 5/14704 (2013.01) [G03G 5/14708 (2013.01); G03G 5/14734 (2013.01); G03G 5/14786 (2013.01); G03G 21/1814 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electrophotographic photosensitive member comprising a surface protective layer:
the surface protective layer being a polymerized film of a composition comprising (i) a compound having one of an acryloyloxy group or a methacryloyloxy group, (ii) a conductive particle and (iii) an organic salt;
the conductive particle being a titanium oxide particle containing niobium;
the organic salt being formed of at least one organic cation and at least one anion;
the organic cation being selected from the group consisting of imidazolium, pyridinium, pyrrolidinium, piperidinium, a tetraalkylammonium and a tetraalkylphosphonium; and
the anion being selected from the group consisting of an organic anion and an inorganic anion, wherein
a content of the organic salt is 0.1 to 10.0 mass % with respect to a total mass of the conductive particle, and
a content of the niobium in the conductive particle is 2.6 to 10.0 mass % with respect to a total mass of the conductive particle.