The research of drawing techniques and the painting materials ; gold leaf, organic dyes and paper patterns, on a pair of two-panel folding screens entitled Red and White plum Blossoms by Ogata Korin, national treasure in Japan.

作为一项科学研究，由东京科学大学的中井泉教授和Kibi国际大学的下山进教授负责调查，重要的无形文化财产的持有人森口国彦先生、铃田茂人先生和森濑一美先生从DENTO KOGEI（日本传统工艺）制造技术的角度出发，对纸图案的使用技术进行了实践研究。至于科学调查的结果，绘画所用的材料与第一次调查的结果相矛盾，金色的背景是金叶，而不是金漆。对于有机染料的使用，部分wave并未承认靛蓝植物的存在，而是指出了使用蓝黑色墨水的可能性。从绘画技法的考察结果来看，黄金背景的边框和流水的轮廓极有可能是用纸样来表现的，但流水本身是无法用纸样来表现的。因此，我们认为它们必须用一种保护染色的技术来描绘。这次的研究让我们认识到文化资产研究的重要性，我们需要用长期历史和传统中积累的技术和经验，以及自然科学的调查来看待文化资产。

As a scientific research, Professor Izumi Nakai in Tokyo University of Science and Professor Susumu Shimoyama in Kibi International University were in charge of the investigation, and holders of an important intangible cultural property of Mr. Kunihiko Moriguchi, Mr. Shigeto Suzuta, and Mr. Kazumi Murose put the investigation into practice for elucidating the using technique of paper patterns from a viewpoint of DENTO KOGEI( Japanese Traditional Art Crafts) manufacturing technique. As for the result of scientific investigation, the material used for the paintings were contradicted the result of the first investigation, the gold background was gold leaves not a gold paint. As for the use of organic dyes, the existence of indigo plant was not recognized by the part of the wave, rather the possibility of the use of bluish black ink was pointed out. By the investigation result of drawing techniques, it is highly possible that the border of gold background and the outline of the running water must be used paper patterns, however, running water themselves unable to express by the paper patterns. Therefore, we consider that they must be depicted with a technique of protect-to-dye. The research this time shown us the extreme importance for a study of cultural assets which we need an eye with technology and experience accumulated in the long history and tradition along with the investigation by natural science.