O'Reilly's machine was based on the rotary technology of Thomas Edison's autographic printing pen. Thomas Edison received US patent 180,857 for Autographic Printing on August 8, 1876. Link's early photography was created with a borrowed medium format Autographic Kodak camera. Graphotype was a process of autographic engraving by which typographic printing blocks were produced. The autographic feature was marketed as having no extra charge. In 1915, Kodak also sold upgrade autographic backs for their existing cameras. Thus, standard 122 film would be labeled "122" and autographic 122 would be "A122". Other film manufacturers did not produce Autographic films, for which Kodak held a patent. Kodak's autographic films had "A" as the first part of the film size designation. Autographic roll film sizes were A116, A118, A120, A122, A123, A126, A127, and A130.