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

概要

Conservation and Restoration of Western Paper

with an o-ring gasket (Photos 35a,b).The display case is a simple design, and itaccommodates security elements in its base.A button mounted on the front of the caseis connected to a timer that can be set torestrict lighting on demand for a set periodof time. The preservation case is placed intoit, followed by several layers of glazing:? LED light source embedded in metalframe? Security glass? VariGuard Smart Glass, which shieldsthe document from visible light byelectronically changing its transparencyfrom dark to clear instantly at the pushof a button or automatically? Top glass ? protects the other morevaluable glass layers underneathfrom scratches and can be replaced ifnecessaryVariGuard Smart Glass is comprised of athin light-control film containing millionsof nano-scale particles that is laminatedbetween glass or plastic substrates. Whenan electrical voltage is applied, the particlesalign and allow light to pass through theglazing, which enables the artifact to be seen.When no electrical voltage is present, theparticles randomly orient and block visiblelight, thus protecting the artifact 19 (Photo36).A second preservation case has beenfabricated for the other copy of theProclamation of the Constitution, and it isanticipated that standard sized preservationcases will be constructed for the loan anddisplay of other prestigious documents.ACKNOWLEDGEMENTSThe author would like to thank MariaBedynski, Lisa Hennessey, Mary PiperHough, Susannah Kendall, GenevieveSamson, Mike Smith, Doris St-Jacques, andJayme Vallieres at Library and ArchivesCanada, and Sherry Guild, Eric Hagan andGreg Hill at the Canadian ConservationInstitute for sharing their expertise.Notes1. The method of lining by stretching and adhering the lining paper on a temporary support of terylene fabric has been inuse for many years. Terylene is a polyester fibre made from polyethylene terephthalate; the trademarked product is Dacron,a woven polyester fabric. See, for example, Albright, Gary and Thomas K. McClintock,“The Treatment of OversizedPaper Artifacts”, Postprints 1982, AIC Book and Paper Group, 10th Annual Meeting (1982). For an overview of liningtechniques, see Paper Conservation Catalogue, American Institute for Conservation Book and Paper Group, SeventhEdition, October 1990, Chapter 29. http://cool.conservation-us.org/coolaic/sg/bpg/pcc/29_lining.pdf2. Spunbond polyester is made of polyethylene terephthalate in a continuous filament construction to produce a non-wovenfabric. Reemay and hollytex are examples of spunbond polyesters.3. Banik, Gerhard,“Ink corrosion-Chemistry”, the Iron Gall Ink Website: http://www.inkcorrosion.org4. http://www.metamorfoze.nl/english; http://www.inkcorrosion.org/; http://www.loc.gov/preservation/outreach/symposia/igi.html Other excellent articles that describe iron gall ink assessment and treatment protocols are: Albro, Silvia et al. 2008.“Developing Guidelines for Iron-Gall Ink Treatment at the Library of Congress”, The Book and Paper Group Annual,vol.27, 2008, pp. 129-165. Biggs, Julie L., et al. 2007.“Treatment trees for iron-gall ink on paper: Using flow charts todevelop treatment protocols”, Proceedings form the Fifth International Conference of the Institute of Paper Conservationand the First International Conference of the Institute of Conservation, Book and Paper Group, Edinburgh 2006, ed.Shulla Jaques (London: Institute of Conservation, 2007), pp. 211?218. Guild, Sherry et al. 2012.“Technical Note onTreatment Options for Iron Gall Ink on Paper with a Focus on Calcium Phytate”, Journal of the Canadian Association forConservation, vol.37, 2012, pp. 17-21.81