1) Gravure 2) Photogravure 3) Print 
• (n.) The process of photographic engraving. • (n.) A plate or picture made by the process of heliogravure.
He`li·o·grav'ure noun [ French héliogravure .] The process of photographic engraving. 
Heliogravure or photogravure is a former photo-mechanical printing process. A photograph of any object, as a painting, etc, was taken, and from the negative so obtained a positive print was made on gelatinized paper. This print was transferred upon a highly polished copper plate, and a solution of terchloride of iron was poured upon it, which penet...
heliogravure The process of photographic engraving or the process of obtaining pictures, as on chemically prepared paper, from photographic negatives, by exposure to light.