Conservation Guidelines

During the digitization process, the manuscripts must be protected against wear and tear in order to ensure handling stresses are less than those experienced during an average use of the manuscript in the reading room or during an exhibition. The "Graz Model" camera table, designed by Diplom Engineer Manfred Mayer sets a new standard for low-stress manuscript handling during photography. The digitization of each item must follow clearly defined criteria:

• Minimal manipulation of the manuscript itself, except as required for actual page turning; that is, no pushing back and forth, no turning over or flipping of the item.
• The angle at which the bound book or the cover itself is opened may in no case exceed 140°.
• No mechanical pressure to flatten the pages, such as with a glass plate, is allowed.
• Lighting must remain at levels at or below those of exhibition: only UV-free lighting at the lowest possible levels.
• Atmosphere must be controlled in the digitalization lab during the eight-hour maximum work period for one item. Temperatures must remain 18° to 25° C (66° to 79° F), relative humidity 40-60%.

 

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