Phototypy is a printing process where photographic negatives are used to create printing plates for a high-quality, fine-line image. Some synonyms for phototypy include photogravure, heliogravure, and photolithography. Photogravure involves the use of a copper plate etched with the image's negative and then printed with ink. Heliogravure is similar but uses steel plates instead of copper. Photolithography, on the other hand, involves printing from a photographic negative onto a lithographic stone or plate. These synonyms are all printing techniques that use photographic images to produce high-quality prints, and they have been widely used especially in the art world for reproducing paintings, photographs, and other fine-art pieces.