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1 1996

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Atramenty żelazowo-galusowe

100%

Sobucki W.

Ochrona Zabytków

1996

nr 3

281-291

The article presents the current state of knowledge about ferric-gallotanic inks, found on manuscripts which are at the moment treated in assorted conservatory workshop. The author discusses the ways of obtaining such types of ink and draws particular attention to dependence between the state of the manuscripts and the composition of the ink. The article examines research aiming at the establishment of the construction of the black pigment in the inks in question as well as the reasons why with time it changes and often resembles rust. The main cause of the unsatisfactory state of a considerable of the manuscripts is the appearance of changes known as ink penetration. Some of the authors connect this phenomenon with the excessive contents of iron in the ink. The study presents a method, introducted in Vienna, for removing this excess by treating the manuscripts with water. The author also deals with problems connected with the de-acidification of the manuscripts and the ways of deciphering faded texts. The study has been supplemented with select recipes were used in the past for making ink.