Non Destructive Detection of Iron-Gall Inks by Means of Multispectral Imaging Part 2: Application on Original Objects Affected With Iron-Gall-Ink Corrosion
| Main Authors: | , , |
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| Format: | Article |
| Language: | English Slovak |
| ISSN: | ISSN 0034-5806 |
| Online Access: | http://www.viks.sk/chk/res_2_03_88_94.doc |
| Abstract: | SUMARRIES. 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ink has been applied to some practical cases, i.e. for identifying the chemical quality of script and drawing on historical documents which to the naked eye appear indiscriminately black, in the same way as paper that is heavily decayed by ink corrosion.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. CONCLUSION. We can conclude that with digital imaging and calculating using specific imaging software, the False Color Infrared Image is an excellent tool for determining the presence of iron-gall ink in a non-destructive way. Besides determining the ink-type, we can even see the ageing effect of the iron-gall ink. Places where the ink seems to be beginning to be carbonizing, locations will turn into (dark) brown. This effect can be found before becoming visible to the naked eye. Therefore this method shall be especially suitable for selecting objects that require an immediate specific conservation treatment in order to stop further degradation. Besides, this method can be a tool for selecting objects, that have to be stored under special conditions, e.g. at lower temperatures in order to slow down the degradation reaction initiated by the ink applied. |
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| ISSN: | ISSN 0034-5806 |
