Electrophotographic photoreceptor, method for producing the same, image forming apparatus and process cartridge

An electrophotographic photoreceptor comprising a conductive support having formed thereon a photosensitive layer, wherein the photosensitive layer comprises a siloxane resin-containing layer containing a siloxane resin obtained by using an organic silicon compound having a structural unit represented by general formula (1) shown below and a hydrolytic group, and a compound represented by general formula (3) shown below:

• wherein, in formula (1), Y represents a divalent group containing at least one carbon atom in its main chain, and in formula (3), F1 represents an organic group derived from a compound having hole transport capability, R1 represents an alkylene group, Z represents an oxygen atom, a sulfur atom or NH, and h represents an integer of 1 to 4, and
• wherein the divalent group is at least one selected from a group consisting of —CnH2n—, —CnH2n-2—, —CnH2n-4—, —C6H4—, —C6H4—C6H4—, —NH—, —CnF2n—, —COO—, —S—, —O— and —N═CH—,
• wherein n represents an integer of 1 to 15,
• provided that when a divalent group containing —S—, —NH— and —O— is used for Y, such a group is used in combination with a group containing a carbon atom to constitute a divalent group containing at least one carbon atom in its main chain.

A method for producing an electrophotographic photoreceptor comprising a conductive support having formed thereon a photosensitive layer containing a siloxane resin-containing layer, which comprises:

• a coating solution preparing step of preparing a coating solution for formation of a siloxane resin-containing layer using an organic silicon compound having a structural unit represented by general formula (1) shown below and a hydrolytic group, and a compound represented by general formula (3) shown below;
• and
• a siloxane resin-containing layer forming step of forming the siloxane resin-containing layer using the coating solution:
• wherein, in formula (1), Y represents a divalent group containing at least one carbon atom in its main chain, and in formula (3), F1 represents an organic group derived from a compound having hole transport capability, R1 represents an alkylene group, Z represents an oxygen atom, a sulfur atom or NH, and h represents an integer of 1 to 4, and
• wherein the divalent group is at least one selected from a group consisting of —CnH2n—, —CnH2n-2—, —CnH2n-4—, —C6H4—, —C6H4—C6H4—, —NH—, —CnF2n—, —COO—, —S—, —O— and —N═CH—,
• wherein n represents an integer of 1 to 15,
• provided that when a divalent group containing —S—, —NH— and —O— is used for Y, such a group is used in combination with a group containing a carbon atom to constitute a divalent group containing at least one carbon atom in its main chain.