Electrophotography is a copying and printing technique employing electrostatic forces and photoconductivity. Photoreceptor materials include amorphous silicon, organic polymers, and main group alloys. Organic photoconductors have almost entirely displaced traditional photoconductive materials such as selenium alloys. The light sensitivity of modern photoconductors in the near infrared region of radiation is so high that low power inexpensive solid‐state lasers are used as light sources for digital imaging. Developer materials and the development process are discussed. Toner triboelectrification and the ability to control the uniformity of toner charge have progressed to the point that stable, reliable operation is achieved over a broad range of environmental conditions. Electrophotographic image quality, even in color, is approaching that of lithographic images. The roles of carrier materials, imaging media, and fusing are defined.