The increasingly important and complicated technology of electrophotography (also called xerography), familiar to most people from its use in photocopiers and laser printers, is the subject of this book, written for both the newcomer and the established expert. Introductory chapters acquaint the reader with the current status of electrophotography, including its technical history and current and projected markets. After mastering this material, the reader will have a working knowledge of the physics of the complete electrophotographic process and a detailed knowledge of what is known and not known about its most important subsystem, development.