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A light-and-shade watermark,Also called a chiaroscuro watermark, a tonal, shaded, or shade-craft watermark, or a shadowmark is a
File:Watermark - Dard Hunter exhibit - Robert C. Williams Paper Museum - DSC00571.JPG, Portrait of Dard Hunter, well-known book maker, 1920s
File:Light-and-shade chiaroscuro4.jpg, Image of a woman using a chiaroscuro watermark
File:Final final jade glass lady of justice.jpg, Nude woman depicted in chiaroscuro watermark
File:Chiaroscuro light-and-shade image of a Madonna.jpg, Chiaroscuro watermark by the Italian papermaker C.M. Fabriano
A light-and-shade watermark,Also called a chiaroscuro watermark, a tonal, shaded, or shade-craft watermark, or a shadowmark is a watermark
A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations ...
image produced in a chiaroscuro
Chiaroscuro ( , ; ), in art, is the use of strong contrasts between light and dark, usually bold contrasts affecting a whole composition. It is also a technical term used by artists and art historians for the use of contrasts of light to achi ...
style. In a traditional watermark, an image is produced in paper fibers by contrasting shades of light and dark in places where the paper is made thinner or thicker during the printing process. The resulting image has a high-contrast "black and white" quality with no graduated shading in between. In a chiaroscuro watermark, however, the fibers in the paper run from thin to thick, producing an image with many shades from light to dark. The technique was first developed in 1848 by William Henry Smith as a method to help prevent counterfeiting.
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