Image forming apparatus, process cartridge, and cartridge set

A process cartridge disposed detachably in a main body of an image forming apparatus, wherein

• the process cartridge comprises
• an electrophotographic photosensitive member, and
• a developing device that has a toner and supplies the toner onto the electrophotographic photosensitive member,
• the electrophotographic photosensitive member comprises a surface layer comprising a binder resin (A),
• the binder resin (A) comprises a structure represented by formula (1) below:
• where, each R11 independently represents a hydrogen atom or a methyl group,
• the toner comprises a toner particle,
• the toner particle comprises a binder resin (B) and a wax, and
• the wax comprises a diester compound represented by formula (2) below:
• where, R1 represents an alkylene group having 1 to 3 carbons and R2 and R3 each independently represent an alkyl group having 11 to 25 carbons.

A cartridge set comprising a first cartridge and a second cartridge that are disposed detachably in a main body of an image forming apparatus, wherein

• the first cartridge has an electrophotographic photosensitive member,
• the second cartridge has a toner container that accommodates a toner for forming a toner image on a surface of the electrophotographic photosensitive member by developing an electrostatic latent image formed on the surface of the electrophotographic photosensitive member,
• the electrophotographic photosensitive member comprises a surface layer comprising a binder resin (A),
• the binder resin (A) comprises a structure represented by formula (1) below:
• where, each R11 independently represents a hydrogen atom or a methyl group,
• the toner comprises a toner particle,
• the toner particle comprises a binder resin (B) and a wax, and
• the wax comprises a diester compound represented by formula (2) below:
• where, R1 represents an alkylene group having 1 to 3 carbons and R2 and R3 each independently represent an alkyl group having 11 to 25 carbons.