ブックタイトルConservation and Restoration of Western Paper

概要

Conservation and Restoration of Western Paper

a result (Photos 28a,b).5-3. REMOVING AUXILARY SUPPORTLAYERSIn the process of examining the first Biblepublished and printed in Canada, theconservator discovered that the blue papercovering the spine is a fragment of anadvertisement for the Bible. The treatmentobjective was to remove the fragment andunderlying white paper layer in one piece,without over-exposing the spine to moisture,and running the risk of creating tidelinesand staining in the text block. 2% gellangum prepared with reverse osmosis (RO)water was gently pressed into contact withthe curve of the blue paper-lined spine, thencovered with Mylar and soft weights. Afterten minutes, the gel was removed and thepaper layers were slowly peeled off with theaid of a microspatula (Photos 29a- c). Theblue printed text was successfully removed inone piece, and the textblock was not affectedby moisture. A similar approach can be usedfor removing thin linings from works ofart, and labels from various substrates, likeframes and canvases.5-4. TREATMENT OF THREE-DIMENSIONALOBJECTSFor maximum flexibility, gellan gum canbe prepared at a low concentration withouta calcium salt solution, and cast into thinlayers. A very flexible 3% gellan gum gelPhoto 24aTrimmed gellan gum gel isplaced over stainPhoto 24bPlexiglas weight placedover gellan gumPhoto 24cRemoved gellan gum:minimal moisturepenetration into paperPhoto 24dYellowed gellan gumremoved from stained areaand transfer of stains tounderlying blotterPhoto 25a Trudeau Paper Dress. Stained area beforetreatmePhoto 25b Stained area after treatment75