Electrophotographic photoreceptor containing naphthalenetetracarboxylic acid diimide derivatives and electrophotographic imaging apparatus employing the same

An electrophotographic imaging apparatus comprising an electrophotographic photoreceptor, wherein the electrophotographic photoreceptor comprises an electrically conductive substrate and a photosensitive layer formed thereon, the photosensitive layer comprising a naphthalenetetracarboxylic acid diimide derivative having Formula (1) below:

• wherein R1 and R2 are independently selected from the group consisting of a hydrogen atom, a halogen atom, a C1-C20 substituted or unsubstituted alkyl group, and a C1-C20 substituted or unsubstituted alkoxy group;
• R3 is selected from the group consisting of a C1-C20 substituted or unsubstituted alkyl group, a C1-C20 substituted or unsubstituted alkoxy group, a C7-C30 substituted or unsubstituted aralkyl group, and a group having the formula —(CH2)n—Y—R4;
• Ar is a C6-C30 substituted or unsubstituted aryl group;
• Y is an oxygen or sulfur atom;
• R4 is a hydrogen atom or a C1-C20 substituted or unsubstituted alkyl group;
• and
• n is an integer between 1 and 12.

An electrophotographic cartridge comprising:

• an electrophotographic photoreceptor comprising an electrically conductive substrate and a photosensitive layer formed thereon, the photosensitive layer comprising a naphthalenetetracarboxylic acid diimide derivative of Formula (1) below;
• and
• at least one of a charging device charging the electrophotographic photoreceptor, a developing device developing an electrostatic latent image formed on the electrophotographic photoreceptor, and a cleaning device cleaning a surface of the electrophotographic photoreceptor,
• wherein the electrophotographic cartridge being attachable to or detachable from an image forming apparatus,
• wherein R1 and R2 are independently selected from the group consisting of a hydrogen atom, a halogen atom, a C1-C20 substituted or unsubstituted alkyl group, and a C1-C20 substituted or unsubstituted alkoxy group;
• R3 is selected from the group consisting of a C1-C20 substituted or unsubstituted alkyl group, a C1-C20 substituted or unsubstituted alkoxy group, a C7-C30 substituted or unsubstituted aralkyl group, and a group having the formula —(CH2)n—Y—R4;
• Ar is a C6-C30 substituted or unsubstituted aryl group;
• Y is an oxygen or sulfur atom;
• R4 is a hydrogen atom or a C1-C20 substituted or unsubstituted alkyl group;
• and
• n is an integer between 1 and 12.

An electrophotographic photoreceptor drum comprising:

• a drum attachable to and detachable from an image forming apparatus;
• and
• an electrophotographic photoreceptor disposed on the drum, wherein the electrophotographic photoreceptor comprises an electrically conductive substrate and a photosensitive layer formed thereon, the photosensitive layer comprising a naphthalenetetracarboxylic acid diimide derivative of Formula (1) below:
• wherein R1 and R2 are independently selected from a group consisting of a hydrogen atom, a halogen atom, a C1-C20 substituted or unsubstituted alkyl group, and a C1-C20 substituted or unsubstituted alkoxy group;
• R3 is selected from a group consisting of a C1-C20 substituted or unsubstituted alkyl group, a C1-C20 substituted or unsubstituted alkoxy group, a C7-C30 substituted and unsubstituted aralkyl group, or a group having the formula —(CH2)n—Y—R4;
• Ar is a C6-C30 substituted or unsubstituted aryl group;
• Y is an oxygen or sulfur atom;
• R4 is a hydrogen atom or a C1-C20 substituted or unsubstituted alkyl group;
• and
• n is an integer between 1 and 12.

An image forming apparatus comprising:

• a photoreceptor unit including an electrically conductive substrate and a photosensitive layer formed thereon, the photosensitive layer including a naphthalenetetracarboxylic acid diimide derivative of Formula (1) below;
• a charging device for charging the photoreceptor unit;
• an image-forming light irradiating device for irradiating light onto the charged photoreceptor unit to form an electrostatic latent image on the photoreceptor unit;
• a developing unit for developing the electrostatic latent image with a toner to form a toner image on the photoreceptor unit;
• and
• a transfer device for transferring the toner image onto a receiving material:
• wherein R1 and R2 are independently selected from a group consisting of a hydrogen atom, a halogen atom, a C1-C20 substituted or unsubstituted alkyl group, or a C1-C20 substituted and unsubstituted alkoxy group;
• R3 is selected from a group consisting of a C1-C20 substituted or unsubstituted alkyl group, a C1-C20 substituted or unsubstituted alkoxy group, a C7-C30 substituted and unsubstituted aralkyl group, or a group having the formula —(CH2)n—Y—R4;
• Ar is a C6-C30 substituted or unsubstituted aryl group;
• Y is an oxygen or sulfur atom;
• R4 is a hydrogen atom or a C1-C20 substituted or unsubstituted alkyl group;
• and
• n is an integer between 1 and 12.