Patent ID: 9229342
Filing Date: 2016-01-05
CPC Classification: G03G

Claim Text:
1. An cylindrical 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; wherein a surface layer of the electrophotographic photosensitive member comprises the following (α), (β) and a charge transporting substance: (α) a siloxane-modified resin having a structural unit represented by any one of the following formulae (A), (B), (C) and (D); (β) at least one compound selected from the group consisting of cyclohexanol, benzyl alcohol, methyl benzoate, benzyl acetate, ethyl 3-ethoxypropionate, acetophenone, and methyl salicate; wherein the (β) content ranges from 0.0001% to 2.0% by mass of the total mass of the surface layer, wherein, in the formula (A), Y X n represents 0 or 1, W wherein, in the formulae (W1) and (W2), R a represents the number of repetitions of a structure in parentheses, b and c each independently represents the number of repetitions of a structure in parentheses, the average of a in the siloxane-modified resin having a structural unit represented by the formula (A) ranges from 10 to 150, the average of b+c therein ranges from 10 to 150, wherein, in the formula (B), X R n represents 0 or 1, V wherein, in the formulae (V1) and (V2), R d represents an integer from 2 to 10, e represents the number of repetitions of a structure in parentheses, f and g each independently represents the number of repetitions of a structure in parentheses, the average of e in the siloxane-modified resin having a structural unit represented by the formula (B) ranges from 10 to 150, the average of f+g therein ranges from 10 to 150, wherein, in the formula (C), X n represents 0 or 1, h, i, and j each independently represents the number of repetitions of a structure in parentheses, the average of h in the siloxane-modified resin having a structural unit represented by the formula (C) and the average of i therein each independently ranges from 1 to 10, and the average of j therein ranges from 20 to 200, wherein, in the formula (D), X n represents 0 or 1, and k represents the number of repetitions of a structure in parentheses, and the average of k in the siloxane-modified resin having a structural unit represented by the formula (D) ranges from 20 to 200.