An electrostatic copying apparatus comprising a rotating endless photosensitive material, an image-forming means for forming an image on the photosensitive material, a conveying means for conveying through a predetermined passage a copying sheet to which the image formed on the photosensitive material...http://www.google.com.au/patents/US4457614?utm_source=gb-gplus-sharePatent US4457614 - Electrostatic copying apparatus
