Salvaging and Conserving Water Damaged Photographic Materials

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  • 水害を受けた写真の救済と保存処理法
  • スイガイ オ ウケタ シャシン ノ キュウサイ ト ホゾン ショリホウ

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Abstract

Degradation of water damaged photographic materials is discussed; the most vulnerable elements are gelatin layers and silver image. A simple and inexpensive chemical treatment is proposed, consisting of a bath containing a gelatin-protecting biocide and a silver image protecting agent. These ingredients were selected among those used in manufacturing of silver halide photographic emulsions or processing chemicals. Experiments confirmed that this treatment significantly reduced oxidative attacks to silver image and bacterial degradation of gelatin layers. The treated material was also stable under intense light fading test. Method of hardening gelatin to suppress swelling is also discussed.<br>

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