US 12,468,255 B2
Electrophotographic photosensitive member, process cartridge, and image forming apparatus
Yuko Iwashita, Osaka (JP); Jun Azuma, Osaka (JP); Keiji Maruo, Osaka (JP); Kazuaki Ezure, Osaka (JP); Yuichi Yoshida, Osaka (JP); Kazutaka Sugimoto, Osaka (JP); Yasuhiro Oishi, Osaka (JP); and Kazunari Hamasaki, Osaka (JP)
Assigned to KYOCERA Document Solutions Inc., Osaka (JP)
Filed by KYOCERA Document Solutions Inc., Osaka (JP)
Filed on Apr. 16, 2024, as Appl. No. 18/636,961.
Claims priority of application No. 2023-067705 (JP), filed on Apr. 18, 2023.
Prior Publication US 2024/0353792 A1, Oct. 24, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G03G 21/18 (2006.01); G03G 5/14 (2006.01); G03G 7/00 (2006.01); G03G 15/095 (2006.01)
CPC G03G 21/1814 (2013.01) [G03G 5/142 (2013.01); G03G 7/0053 (2013.01); G03G 15/095 (2013.01); G03G 2215/00957 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electrophotographic photosensitive member comprising:
a conductive substrate;
an intermediate layer provided on the conductive substrate; and
a photosensitive layer provided on the intermediate layer, wherein
the intermediate layer contains a specific polyamide resin and specific inorganic particles,
the specific inorganic particles each include a metal oxide particle and a surface treatment layer covering at least a part of a surface of the metal oxide particle,
the surface treatment layers contain a component derived from an organic siloxane compound and at least one of aluminum oxide and silica,
the specific polyamide resin includes a first repeating unit derived from an aliphatic dicarboxylic acid with a carbon number of at least 8 and no greater than 20 and a second repeating unit derived from a diamine compound with a cycloalkane structure, and
a total percentage content of the first repeating unit and the second repeating unit to all repeating units included in the specific polyamide resin is at least 80% by mol.