Patent ID: 8669030

Claim:
A photoreceptor comprising: an electroconductive substrate; a photosensitive layer which is located overlying the electroconductive substrate and which is not radically crosslinked; and an outermost layer which is located overlying the photosensitive layer and which includes a radically crosslinked material, wherein the radically crosslinked material comprises units of formula (I): wherein each of Ar 1 , Ar 2 and Ar 3 represents a substituted or unsubstituted arylene group, X 2 represents an oxygen atom or a sulfur atom, and n is 0 or 1, wherein the units of formula (I) are incorporated in the radically crosslinked material by crosslinking a radically polymerizable compound having a unit of formula (I) and a radically polymerizable functional group, wherein the radically polymerizable compound is a compound selected from the group consisting of compounds of formulae (J), (K), and (L): wherein each of Ar 1 , Ar 2 and Ar 3 represents a substituted or unsubstituted arylene group, each of R 201 and R 202 represents a hydrogen atom or a methyl group, each of R 205 and R 206 represents a linear or a branched alkylene group, a 1-ketohexylene group, or a phenylene group, X 2 represents an oxygen atom or a sulfur atom, each of i and j is 0 or an integer of from 1 to 4, and n is 0 or 1; wherein each of Ar 1 , Ar 2 and Ar 3 represents a substituted or unsubstituted arylene group, each of R 201 , R 202 , R 203 and R 204 represents a hydrogen atom or a methyl group, X 2 represents an oxygen atom or a sulfur atom, and n is 0 or 1; wherein each of Ar 1 , Ar 2 and Ar 3 represents a substituted or unsubstituted arylene group, each of R 201 and R 202 represents a hydrogen atom or a methyl group, X 2 represents an oxygen atom or a sulfur atom, m is an integer of from 1 to 50, and n is 0 or 1.