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  2. Photosensitive anodized aluminum - Wikipedia

    en.wikipedia.org/wiki/Photosensitive_Anodized...

    Photosensitive anodized aluminum, also referred to as photo anodized aluminum or photo metal, utilizes the porous nature of unsealed anodized aluminum [1] to create a sub-surface image. The image can be created either through exposure and development of an anodic layer impregnated with silver compounds [2] (Type 1 [3]), much like traditional ...

  3. Tintype - Wikipedia

    en.wikipedia.org/wiki/Tintype

    Tintype. A tintype, also known as a melanotype or ferrotype, is a photograph made by creating a direct positive on a thin sheet of metal, colloquially called 'tin' (though not actually tin-coated), coated with a dark lacquer or enamel and used as the support for the photographic emulsion.

  4. Photographic plate - Wikipedia

    en.wikipedia.org/wiki/Photographic_plate

    Photographic plates preceded photographic film as a capture medium in photography. The light-sensitive emulsion of silver salts was coated on a glass plate, typically thinner than common window glass. They were heavily used in the late 19th century and declined through the 20th. They were still used in some communities until the late 20th century.

  5. Photogravure - Wikipedia

    en.wikipedia.org/wiki/Photogravure

    Photogravure. Photogravure (in French héliogravure) is a process for printing photographs, also sometimes used for reproductive intaglio printmaking. It is a photo-mechanical process whereby a copper plate is grained (adding a pattern to the plate) and then coated with a light-sensitive gelatin tissue which had been exposed to a film positive ...

  6. History of photography - Wikipedia

    en.wikipedia.org/wiki/History_of_photography

    The earliest known surviving heliographic engraving, made in 1822. It was printed from a metal plate made by Joseph Nicéphore Niépce with his "heliographic process". [32] The plate was exposed under an ordinary engraving and copied it by photographic means. This was a step towards the first permanent photograph from nature taken with a camera ...

  7. Etching - Wikipedia

    en.wikipedia.org/wiki/Etching

    Areas of the photo-etch image may be stopped-out before etching to exclude them from the final image on the plate, or removed or lightened by scraping and burnishing once the plate has been etched. Once the photo-etching process is complete, the plate can be worked further as a normal intaglio plate, using drypoint, further etching, engraving ...

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