Shibutani Ayako
University of Tokyo. Historiographical Institute. Project Assistant Professor
Takashima Akihiko
University of Tokyo. Historiographical Institute. Technical Specialist
Hirano Akira
Sainsbury Institute for the Study of Japanese Arts and Cultures. Librarian, Lisa Sainsbury Library
Yamaguchi Satoshi
University of Tokyo. Historiographical Institute. Technical Specialist
Hirasawa Kanako
University of Tokyo. Historiographical Institute. Project Academic Specialist/Senior URA
歴史資料の保存・修復のお悩みお聞きします
歴史資料やその複製物は，現在の利活用だけでなく，保全して子孫に伝え，未来社会に生かすことが重要である。そのためには，現状の把握と記録，劣化を防ぐための修理など，適切な措置と最適環境での保管が必要となる。東京大学史料編纂所では，技術部史料保存技術室を中心に，教員と技術職員が協力し，また関連事業者とも協業，歴史資料の修理・保存を長年行ってきている。成果として得られた各種の保存技術はオープンにし，一機関の成果に止めないよう努めている。
歴史資料のうち紙媒体資料については，光学的技術にもとづく自然科学的手法を応用して紙の組成を分析し，修理の基礎データとする研究を進めている。最近では，考古学・文化財科学との連携や物質構造分析，植物学・ゲノム解析手法，データサイエンス手法を加えた異分野融合による史料分析を進めている。さらに，数値データ等の科学情報の定型化を図り，データベースとしての公開も準備している。今回，本所が行っている紙媒体資料の修理・保存技術を紹介するとともに，EAJRS在欧和古書保存ワーキンググループの協力を得て，歴史資料の保存・修理について欧州各機関が抱える問題点の相談窓口を設け，デジタル連結世界・時代における保存技術の共有化について考えたい。
Offering consultation services for preservation and restoration of historical materials
Ensuring the longevity of historical materials and their reproductions is not merely about their current utilisation but also their preservation for future generations. This entails employing appropriate measures and optimal storage conditions, including identification and recording of current conditions and repairs to prevent deterioration. The Historiographical Institute (HI) at the University of Tokyo has long been engaged in the restoration and conservation of historical materials through concerted efforts among its staff, focusing on the Conservation Laboratory, and also in collaboration with related businesses. The various preservation techniques developed as a result of the project are openly disclosed, and efforts are made to ensure that they benefit a broader community beyond a single institution (HI).
For historical paper-based materials, we are conducting research to analyse their components using natural scientific methods, predominantly optical techniques, to provide fundamental data for restoration. Recently, we analysed the components and constituents of historical paper-based materials through archaeology and cultural heritage science, material structure analysis, botany and genome analysis, and data science methods. In addition, efforts are underway to standardise scientific information such as numerical data and integrate it into our database. This presentation introduces HI’s restoration and conservation techniques for historical paper-based materials. In collaboration with the EAJRS Conservation/Preservation Working Group, it establishes a consultation service aimed at assisting European institutions facing challenges in conserving and restoring historical paper-based materials, while also contemplating the global dissemination of conservation techniques in this age of digital connectivity.