A method for preparation of a printing plate by an electrophotographic process comprising forming a toner image on a transfer layer capable of being removed upon a chemical reaction treatment provided on the surface of an electrophotographic light-sensitive element by an electrophotographic process,...http://www.google.com.au/patents/US5501929?utm_source=gb-gplus-sharePatent US5501929 - Method for preparation of printing plate by electrophotographic process
