![]() In modern commercial lithography, the image is transferred or created as a patterned polymer coating applied to a flexible plastic or metal plate. This traditional technique is still used for fine art printmaking. The ink would finally be transferred to a blank paper sheet, producing a printed page. An oil-based ink was then applied, and would stick only to the original drawing. The water only adhered to the gum-treated parts, making them even more oil-repellant. For printing, the stone was first moistened. The stone was then treated with a mixture of weak acid and gum arabic ("etch") that made the parts of the stone's surface that were not protected by the grease more hydrophilic (water attracting). ![]() Originally, the image to be printed was drawn with a greasy substance, such as oil, fat, or wax onto the surface of a smooth and flat limestone plate. Sea anemones from Ernst Haeckel's Kunstformen der Natur ( Artforms of Nature), 1904
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