US 12,248,274 B2
Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
Motoya Yamada, Chiba (JP); Koji Takahashi, Chiba (JP); and Masayuki Shinozuka, Ibaraki (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 18, 2022, as Appl. No. 17/651,637.
Claims priority of application No. 2021-031219 (JP), filed on Feb. 26, 2021.
Prior Publication US 2022/0276578 A1, Sep. 1, 2022
Int. Cl. G03G 5/10 (2006.01); G03G 21/18 (2006.01)
CPC G03G 5/102 (2013.01) [G03G 21/1814 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An electrophotographic photosensitive member, comprising:
a support having a cylindrical shape and comprising at least one of aluminum or an aluminum alloy; and
a photosensitive layer formed on the support, wherein
B/A≤1.0 when A (μm2) is an area at a maximum frequency calculated from an area distribution curve of aluminum crystal grains of a surface of the support and B (μm2) is a half-width of a highest peak in the area distribution curve.