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Table of contents
- Navigation menu
- Sleeve High Neck Bodycon Dress
- Intaglio Etching Prints | Aquatint and Drypoint | Xuan Chen
- So kann ich selbst mein bester Arzt sein (German Edition).
- Technique of Intaglio Photogravure Printmaking!
- Tortuga - Intaglio Print – A.E. London Studio?
- Der Paperboy liefert (German Edition).
- IFPDA - Glossary?
Metal-halide light sources give more consistent results and are safer to use than carbon-arc lamps. The aquatint grain creates microscopic 'lands' on the copperplate which remain unetched. Particles of asphaltum are allowed to rain down on the copperplate and are then fused over high heat until they flow into an amoeba-like shape, as shown enlarged in Figure 2. The unique look of photogravure depends on the variable depth of the etching, the ability of the copperplate to transfer far more ink to the shadows than to the highlights of the print, and to register subtle gradation of tone.
What enables the plate to be etched to various depths is the linear sensitivity of dichromated gelatin to ultraviolet light. Unlike conventional silver-based photographic materials, dichromated gelatin is sensitive to every nuance of light intensity in equal measure. This enables it to register highlight and shadow detail not found in conventional photographs. The gelatin resist is partially permeable: It allows the etchant to seep through depending on how thick or thin the gel is.
Where the gel is thin, etching is deep, and where thick the etching is shallow.
The deeply etched parts of the plate hold more ink and form the dark parts of the gravure print, the lightly etched parts less ink, creating the highlights. Westwind , Cross-currents , Discovery , Tivoli , Meigetsuin , and Roofwork are examples of prints made from deeply etched plates.
Molecules of gelatin activated by UV light bind to one another in long chains through a mechanism known as cross-linking Figure 3. Cross-linking makes the resist more or less insoluble depending on how far it extends through the gelatin. The amount of cross-linking, remarkably, tracks the amount of UV precisely, even at the extremes of light and darkness.
While ordinary photographic films and papers miss the near-whites and near-blacks because of their uneven sensitivity, UV-sensitive materials register the finest gradations of tone faithfully.
Sleeve High Neck Bodycon Dress
The dried resist looks like a laterally reversed negative Figure 4 , light in the shadows where the resist is thin and dark in the highlights where the resist is thick. Emerging well after the woodcut print, intaglio printmaking is first recorded as being used in the late s.
The method was previously used for all mass-printed materials but today intaglio printing is reserved for currency, banknotes and passports. Home Glossary Intaglio Printing What is intaglio printing? Artworks for Sale.