Patent ID: 9304414
Filing Date: 2016-04-05
CPC Classification: G03G

Claim Text:
1. A method for producing an electrophotographic photosensitive member comprising a support, a charge generating layer formed on the support, and a charge transporting layer formed on the charge generating layer, the method comprising: dissolving (α) and (β) with solvents of (γ) and (δ) to prepare a charge-transporting-layer coating liquid; the (α) being a charge transporting substance, the (β) being at least one resin selected from the group consisting of the (γ) being an aromatic hydrocarbon solvent which is at least one selected from the group consisting of toluene, xylene and mesitylene, and the (δ) being a compound having a boiling point under 1 atmosphere higher than that of the (γ), forming a coat for the charge transporting layer using the charge-transporting-layer coating liquid, and drying the coat to form the charge transporting layer, wherein the charge transporting layer is a surface layer, the charge-transporting-layer coating liquid is free of any polyester resins having a siloxane structure at the end thereof and any polycarbonate resins having a siloxane structure at the end thereof; and the (α), the (γ) and the (δ) satisfy the following expression: wherein, X(g) represents the solubility of the (α) in 100 g of the (γ) in an environment at 23° C. under 1 atmosphere, and Y(g) represents the solubility of the (α) in 100 g of the (δ) in an environment at 23° C. under 1 atmosphere; wherein, R X R X Y wherein, R R X wherein the content of the (γ) is higher than the content of the (δ) in the charge-transporting-layer coating liquid.