Non Destructive Detection of Iron-Gall Inks by Means of Multispectral Imaging Part 2: Application on Original Objects Affected With Iron-Gall-Ink Corrosion
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John Havermans
, Hadeel Abdul Aziz und Hans Scholten
SUMMARIES
The FCIR method for analysing iron gallotannate ink has been applied to some practical cases, i.e. for identifying the chemical quality of script and drawing on historical documents which to the naked eye appear indiscriminately black, in the same way as paper that is heavily decayed by ink corrosion. Using FCIR those consisting of iron gallotannate ink appear as red while the corroded paper remains black, thus allowing us to see the amount of damage.
La méthode FCIR servant à analyser l'encre gallique a été appliquée à certains cas pratiques, p. ex. pour identifier la qualité chimique de certains écrits et dessins contenus dans des documents historiques et qui apparaissent tous noirs à l'oeil nu de la même façon que le papier qui a été fortement dégradé par une corrosion à l'encre. L'utilisation de la méthode FCIR permet de mettre en évidence la couleur rouge de l'encre gallique alors que le papier corrodé reste invariablement noir, ainsi il est possible d'évaluer le degré de la détérioration.
Es wird über die praktische Anwendung der Falschfarben-Infrarotphotographie zum Erkennen von Eisengallustinte berichtet, nämlich zur Unterscheidung von Schrift und Zeichnungsstrichen in historischen Objekten, die für das bloße Auge unterschiedslos schwarz erscheinen, ebenso wie Papier, das bereits stark tintenfraßgeschädigt ist. . Bei Anwendung der genannten optischen Methode erscheint Eisengallustinte als rot, geschädigtes Papier aber unverändert als schwarz, was eine Einschätzung des Schadensgrades erlaubt.
© 2003 K. G. Saur Verlag GmbH, Ortlerstr. 8, D-81373 München
Artikel in diesem Heft
- The Structure of Collagen within Parchment – A Review
- The Behaviour of Paper Treated in a Carbon Dioxide Modified Atmosphere
- Non Destructive Detection of Iron-Gall Inks by Means of Multispectral Imaging Part 2: Application on Original Objects Affected With Iron-Gall-Ink Corrosion
- Susceptibility of Printed Paper to Attack of Chewing Insects after Gamma Irradiation and Ageing
- The Role of Chitosan in Improving the Ageing Resistance of Rosin Sized Paper
- The Influence of Secondary Chromophores on the Light Induced Oxidation of Paper Part II: The Influence of Light on Groundwood Paper
- Obituary Arthur David Baynes-Cope (1928–2002)
Artikel in diesem Heft
- The Structure of Collagen within Parchment – A Review
- The Behaviour of Paper Treated in a Carbon Dioxide Modified Atmosphere
- Non Destructive Detection of Iron-Gall Inks by Means of Multispectral Imaging Part 2: Application on Original Objects Affected With Iron-Gall-Ink Corrosion
- Susceptibility of Printed Paper to Attack of Chewing Insects after Gamma Irradiation and Ageing
- The Role of Chitosan in Improving the Ageing Resistance of Rosin Sized Paper
- The Influence of Secondary Chromophores on the Light Induced Oxidation of Paper Part II: The Influence of Light on Groundwood Paper
- Obituary Arthur David Baynes-Cope (1928–2002)