A Preliminary Study on Structure of the Wooden Printing Blocks in Japan - Based on the 3D Measurement Method ‐

Abstract

This study reviews the structure of wooden printing blocks in Japan, focusing on the blocks as threedimensional objects. Inspection is more effective three-dimensionally than two-dimensionally, and for the first time in wooden printing block research, the study uses a 3D CT scanner and a high-resolution 3D digitizer. The 3D CT scanner examines cross sections of the blocks and identifies their grain and contents, including insects surviving within them. The 3D digitizer enables observation of objects up to 0.02 mm; this allows detailed collection of block surface information, which is difficult to identify with a conventional microscope.