Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

An electrophotographic apparatus comprising an electrophotographic photosensitive member, a charging means, an exposure means, a developing means, and a transferring means,

• wherein the exposure means is for irradiating the electrophotographic photosensitive member with light having a wavelength of 380 to 450 nm as exposure light,
• wherein the electrophotographic photosensitive member comprises a support, a charge generation layer provided on the support, and a charge transport layer provided on the charge generation layer,
• wherein the charge transport layer is a surface layer of the electrophotographic photosensitive member, and contains a binder resin and a charge transport material,
• wherein the charge transport material consists of a triarylamine compound,
• wherein the binder resin consists of an aliphatic dicarboxylic acid polyester resin having repeating structural units consisting of repeating structural units each represented by formula (1):
• where R11 to R18 are each independently a hydrogen atom, a methyl group, an ethyl group or a phenyl group, X11 is a butylene group, a pentylene group, a hexylene group, a heptylene group or an octylene group, and Y11 is a single bond, an oxygen atom, a sulfur atom or a divalent group having a structure represented by formula (2):
• where R21 and R22 are each independently a methyl group, an ethyl group, a propyl group or a trifluoromethyl group, or R21 and R22 are bonded together to form a cyclohexylidene group, and
• wherein the aliphatic dicarboxylic acid polyester resin has a weight average molecular weight of 80,000 or more.