Art on Paper

Straightforward procedures include removing surface dirt and grime and unmounting a work to separate it from its acidic backing. More complicated water- and solvent-based treatments include tape stain removal, pulping loss repair and stain reduction.

Some samples:

Aqueous treatments

Aqueous treatments such as immersion or slant wash are used to treat overall acid degradation and oxidation.

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Burn Lines

Burn lines are caused by the migration of acids from improper matting. 

Joan Miro, undated colored lithograph, 13/150

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Fiber pulp fills

Fiber pulp fills will complete the paper loss caused by insects or mishandling.

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Bunnies, unsigned charcoal drawing

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Foxing

Foxing is the term for reddish-brown spots caused by either fungal activity, metal-induced degradation, or both.

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Pablo Picasso, undated intaglio from Corps Perdu, 38/207

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Pressure Sensitive Tapes

Tape and subsequent  stains can be removed mechanically with solvent poultices.

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Tide lines 

Tide lines are the stains caused after a liquid entered the paper and stopped.

 

Elizabeth White,1893-1976, "Spring Twilight, Charleston," undated drypoint

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Unmounting

Unmounting is often essential in arresting the migration of acidic degradation products.

Untitled Watercolor by George Biddle, 1928

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