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Preserving Photographs & Documents (view source)
Revision as of 13:16, 6 August 2011
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*Avoid using paper clips as they can abrade or scratch the surfaces of prints or negatives. | *Avoid using paper clips as they can abrade or scratch the surfaces of prints or negatives. | ||
*Avoid using regular tape as it usually contains acids which can accelerate the deterioration process. | *Avoid using regular tape as it usually contains acids which can accelerate the deterioration process. | ||
*Temperature and humidity affect photographs and documents more than any other element. The best conditions are 70 degrees | *Temperature and humidity affect photographs and documents more than any other element. The best conditions are 70 degrees Fahrenheit with relative humidity under 50%. | ||
*High humidity is most harmful and high temperatures accelerate deterioration. Cyclic conditions (high heat and humidity followed by cold and dry weather, followed by high heat, etc.) are very bad for the emulsion and may cause cracking and separation of the emulsion from the support. | *High humidity is most harmful and high temperatures accelerate deterioration. Cyclic conditions (high heat and humidity followed by cold and dry weather, followed by high heat, etc.) are very bad for the emulsion and may cause cracking and separation of the emulsion from the support. | ||
*Attics and Basements - The worst places to store your photographs or documents is in an uninsulated attic or basement. In the summer, temperatures in an attic could reach 125 degrees F. while in the winter they can get down to less than 0 degrees. With the constant high temperatures and humidity in the summer and low temperatures and humidity in the winter, the photographs or documents will become brittle. In severe cases, the emulsion (image) on the photograph can separate from the base (paper). These cyclic conditions will have a devastating effect on any paper product. | *Attics and Basements - The worst places to store your photographs or documents is in an uninsulated attic or basement. In the summer, temperatures in an attic could reach 125 degrees F. while in the winter they can get down to less than 0 degrees. With the constant high temperatures and humidity in the summer and low temperatures and humidity in the winter, the photographs or documents will become brittle. In severe cases, the emulsion (image) on the photograph can separate from the base (paper). These cyclic conditions will have a devastating effect on any paper product. | ||