Restoration of the Information on De-colourized Architectural Cyanotypes
-
Sawako Sentoku
und
Keiko Kida
Abstract
Cyanotypes are known to de-colourize with alkalis; however, not much research has been done to regain the lost information. This research examines two possibilities to bring back the information: one is to utilize elemental mapping by X-ray fluorescence spectroscopy analysis to regain the image non-invasively, and the second, to treat the cyanotype with acidic solutions. Both methods brought back the image to the extent that the information could be obtained. As photo reproductions, one of their greatest values is the information they convey. This research could be significant in that it opens possibilities to regain the lost information.
Zusammenfassung
Es ist bekannt, dass Cyanotypien durch Alkalien entfärbt werden; allerdings existieren nur wenige Untersuchungen zur Wiederherstellung dieser verlorenen Informationen. In dieser Studie werden zwei mögliche Ansätze dafür getestet: zum einen die Elementkartierung mittels Röntgenfluoreszenzspektroskopie, um das Bild nicht-invasiv wiederzuerlangen, und zum anderen die Behandlung mit sauren Lösungen, um das Blau wiederherzustellen. Beide Methoden erwiesen sich als geeignet, um verlorene Informationen wieder sichtbar zu machen. Der wichtigste Wert von Fotoreproduktionen liegt in ihrem Informationsgehalt, deshalb ist die Möglichkeit, verlorene Informationen wiederzuerlangen, von groβer Bedeutung.
Acknowledgement
We are thankful for Dr. Masahide Inuzuka of Tokyo National Research Institute for Cultural Properties for allowing the use of M4 TORNADO for the elemental mapping for this research.
[Acknowlegement section added after online publication 22 May 24]
References
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© 2024 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Editorial
- Editorial
- Preface
- Editorial
- Original Works
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Artikel in diesem Heft
- Frontmatter
- Editorial
- Editorial
- Preface
- Editorial
- Original Works
- Treating Brown Inks: Investigation into the Effects of Aqueous Treatment Methods on the Colour Stability of Bister, Sepia, Iron Gall and Logwood Inks
- Characterization of Historical and Modern Leathers Using FTIR, XRD, SEM-EDX, and Thermal Techniques
- Material Characterisation of 19–20th Century Manuscripts from Northern Thailand
- Review
- Proteomics to Study Parchment Degradation – From Bulk to Spatial Analysis
- Original Works
- The Dagulf Psalter (Austrian National Library Cod. 1861): A Multi-Analytical Approach to Study Inks, Dyes, and Pigments of this Early Carolingian Manuscript
- Copper Complexes in Verdigris Painting Mixtures: An Electron Paramagnetic Resonance Characterization
- Restoration of the Information on De-colourized Architectural Cyanotypes
- Study on the Material Properties and Deterioration Mechanism of Palm Leaves
- Analysis of Two Different Inks and Application Techniques on Palm Leaf Manuscripts Through Non-Invasive Analysis
