@article{oai:tobunken.repo.nii.ac.jp:00003880,
 author = {早川, 泰弘 and 城野, 誠治 and Yasuhiro, HAYAKAWA and Seiji, SHIRONO},
 issue = {53},
 journal = {保存科学, Science for conservation},
 month = {Mar},
 note = {Saichu-fu (H32.0cm×W1091.3cm)is known as the only painting scroll with color drawn by Ito Jakuchu (1716-1800)at the age of 77. Motifs of ninety-eight vegetables and fifty-six insects are drawn with pigments and dyes on silk. The National Research Institute for Cultural Properties, Tokyo investigated the motifs and colorants of this painting scroll before its restoration from 2011 to 2012. Each section was photographed using high resolution digital color photography and colorants were identified by analysis using X-ray fluorescence spectroscopy. The analytical results of the colorants used in Saichu-fu are presented briefly in this report by comparison with those used in Doshoku Sai-e, a masterpiece of Jakuchu collected in the Sannomaru Shozokan.
(1) White-colored materials
 Only one pigment, shell white (Ca as a major component) is used. The same pigment is used for the white material in Doshoku Sai-e. The size of the motif of a cabbage butterfly with white color drawn in Saichu-fu and Doshoku Sai-e is almost the same.
(2) Red-colored materials
 Only one pigment, cinnabar (Hg as a major component), and an organic dye are used. The red-colored materials containing Fe or Pb used in Doshoku Sai-e are not found.
(3) Yellow-colored materials
 Only one pigment containing Fe as a major component and an organic dye are used. The yellow-colored material containing As which is used in Doshoku Sai-e is not found. The size of the motif of a swallowtail butterfly with yellow color drawn in Saichu-fu and Doshoku Sai-e is almost the same.
(4) Brown-colored materials
 Only one pigment containing Fe as a major component is used.
(5) Green-colored materials
 A pigment containing Cu and a small amount of As are used. An organic dye is also used.
(6) Blue-colored material
 One pigment, azurite (Cu as a major component), and an organic dye are found. The blue-colored pigment containing Fe used in Doshoku Sai-e is not found.
(7) Black-colored materials
 Black ink is used in many places.Gray color is expressed by using shell white with black ink. The size of the motif of a beetle in black and dark-brown drawn in Saichu-fu and Doshoku Sai-e is almost the same.
 It is expected that the results presented in this paper will contribute to the research of Jakuchu paintings.},
 pages = {55--66},
 title = {〔報告〕蛍光エックス線分析による伊藤若冲菜蟲譜の彩色材料調査},
 year = {2014}
}