photographic plate; photogravure plate; photostat
Technical term in printing and photography for a plate or print made by a photographic process. Covers both the physical plate and the resulting print.
The illustrations in this book are printed by photogravure.
Digitize and preserve old photographic plates.
グラビア is a more common term for photogravure, especially in magazine printing, while 写真版 is a broader technical term.
tricolor printing
Compound of 写真 (photograph) and 版 (printing plate/edition). A straightforward technical coinage from the late 19th or early 20th century.