Untoned images will be especially vulnerable to fading. Highlight details will fade first, but overall fading is also common. Images are often faded and may show pale yellow at their edges. Video courtesy of Image Permanence Institute, Graphics Atlas i Composition Supportĭeterioration Salted paper prints are sensitive to pollutants, humidity, and light. Salt print matte surface viewed in raking light. Salt prints are typically found mounted in albums or loose. If the print is faded, the image may appear yellowish brown. The image will likely range from light brown to reddish brown (untoned) to purplish brown (toned). If unmounted, the paper will be semi-translucent when viewed over a light source. The surface sheen will likely be matte and will not exhibit surface gloss its texture will be rough due to the absence of a binder layer. Many silver salt print images appear to be embedded into the paper surface. A positive print is created by placing a negative in contact with the sensitized silver printing-out paper and exposing it to sunlight. Description A salt print is a single-layer print comprised of an uncoated paper support with a silver image deposited in the paper fibers. Image courtesy of Image Permanence Institute, Graphics Atlas.ĭates 1839 – 1860s Surface Sheen Matte Paper Fibers Clearly visible Image Tone Monochrome (reddish brown (untoned), purplish brown (toned)) may appear yellowish brown or greenish yellow if faded. Image courtesy of Image Permanence Institute, Graphics Atlas. Image courtesy of the Chicago History Museum: Graceland Cemetery Photo Scrapbook - X.2084.2002 PPL. Instant Photo, Color (1963 – 2008 limited production persists today).Instant Photo, B&W (1947 – 2008 limited production persists today).Chromogenic Color Print (1942 – present).Matte Collodion POP Print (1893 - 1920s).Platinum/Palladium Print (1873 - 1930s)Ģ-Layer Prints (uncoated paper w/ binder layer)ģ-Layer Prints (baryta-coated w/ binder layer).Monochrome Prints 1-Layer Prints (uncoated paper) Monochrome prints are split into three categories: 1-layer (image material only), 2-layer (image material in a binder), or 3-layer (image material in a binder atop a baryta coating). Photo prints may be full-color or monochrome, which means that the image is rendered using a single color (e.g. Most prints are typically positive images. silver particles) dispersed in a binder substance (e.g. Photo emulsion, which is carried on a paper or plastic support, is composed of a light-sensitive image material (e.g. A photographic image is formed through the exposure of a photosensitive emulsion to light: this is the essence of a photograph.
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