Electrophotographic photoreceptor having excellent stability in terms of electrical properties and interlayer adhesion strength and electrophotographic imaging apparatus employing the same

An electrophotographic imaging apparatus, comprising:

• an electrophotographic photoreceptor;
• a charging unit to charge a photosensitive layer of the electrophotographic photoreceptor;
• a light exposure unit to form an electrostatic latent image on a surface of the photosensitive layer of the electrophotographic photoreceptor;
• and
• a developer to develop the electrostatic latent image,
• wherein the electrophotographic photoreceptor comprises an undercoat layer and a photosensitive layer that are sequentially formed on an electrically conductive substrate, and the undercoat layer has a structure in which metal oxide particles and dialkylcitrate-chelated zirconate represented by Formula 1 below are dissolved or dispersed in a binder resin:
• wherein R1 and R2 are each independently a C1-20 linear or branched alkyl group, and
• wherein the undercoat layer comprises 50 to 200 parts by weight of the metal oxide particles and 0.2 to 2 parts by weight of dialkylcitrate-chelated zirconate based on 100 parts by weight of the binder resin.