Application of X-ray Transmission Test with Color Scintillation Detector for Cultural Property (1)

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Ema, votive tablets, have not studied in the field of research on painting techniques and painting materials. Also, there are few studies of Ema in the field of history of art.Paints diversified in various kinds, since the foreign-made paints were imported and artificial paints increased from the late Edo period through the Meiji period. Ema, which is dedicated to Shinto shrines, changed its color tone and coloration since about 1850 when paints began to diversify. It is significant to study Ema in this period in order to examine the root of Japanese paintings and controversial points from the Meiji period to present as well as to reevaluate Ema.In this study, it was examined that the change of the paints used for mass-produced Ema and its characteristics in the period. The color pigments have been usually identified by elemental analysis and spectrographic analysis. These methods are significantly effective for the study of pigments. However, it takes considerable time to analyze even one piece of Ema because very small amount of samples are provided. On the contrary, it is necessary to analyze a lot of samples to study the change of pigments used for Ema and the characteristics in the period. It is considered if it would facilitate to analyze pigments used for a lot of Ema by introducing the equipment of X-ray transmission test with color scintillation detector.