Electrophotographic photoreceptor, image forming apparatus, and coating liquid for forming photosensitive layer

An electrophotographic photoreceptor which is a positive charging type electrophotographic photoreceptor comprising a conductive support and a photosensitive layer on the conductive support, wherein

• the photosensitive layer comprises a charge generating material, a hole transport material, an electron transport material, and a binder resin in the same layer, and
• a residual potential VL2 at a point at which an exposure amount for forming a latent image is 0.5 μJ/cm2 satisfies V0−VL2≥620 when an initial surface potential V0 is set to +700 V, exposure with monochromatic light of 780 nm is performed and measurement is performed by a dynamic method.

An electrophotographic photoreceptor which is a positive charging type electrophotographic photoreceptor comprising a conductive support and a photosensitive layer on the conductive support, wherein

• the photosensitive layer comprises a charge generating material, a hole transport material, an electron transport material, and a binder resin in the same layer, and
• a residual potential VL3 at a point at which an exposure amount for forming a latent image is 0.8 μJ/cm2 satisfies V0−VL1≥630 when an initial surface potential V0 is set to +700 V, exposure with monochromatic light of 780 nm is performed and measurement is performed by a dynamic method.

An electrophotographic photoreceptor which is a positive charging type electrophotographic photoreceptor comprising a conductive support and a photosensitive layer on the conductive support, wherein

• the photosensitive layer comprises a charge generating material, a hole transport material, an electron transport material, and a binder resin in the same layer, and
• when an initial surface potential V0 is set to +700 V, exposure with monochromatic light of 780 nm is performed and measurement is performed by a dynamic method, a residual potential VL1 at a point at which an exposure amount for forming a latent image is 0.3 μJ/cm2 satisfies V0−VL1≥570, a residual potential VL2 at a point at which an exposure amount for forming a latent image is 0.5 μJ/cm2 satisfies V0−VL2≥600, a residual potential VL3 at a point at which an exposure amount for forming a latent image is 0.8 μJ/cm2 satisfies V0−VL3≥610, a residual potential VL4 at a point at which an exposure amount for forming a latent image is 1.0 μJ/cm2 satisfies V0−VL4≥620, and a residual potential VL5 at a point at which an exposure amount for forming a latent image is 1.5 μJ/cm2 satisfies V0−VL1≥630.