noun
letterpress; relief printing
A printing technique where the image area is raised above the non-image area; common in traditional letterpress and flexography.
この本は凸版印刷で作られています。
This book is made using letterpress printing.
凸版は、版の凸部にインクをつけて印刷する方式
Relief printing is a method where ink is applied to the raised parts of the plate.
Compound of 凸 (convex, raised) and 版 (printing plate), describing a plate with raised printing surfaces.