Relief printing is a family of printing methods where a printing block, plate or matrix, which has had ink applied to its non-recessed surface, is brought into contact with paper. The non-recessed surface will leave ink on the paper, whereas the recessed areas will not. A printing press may not be needed, as the back of the paper can be rubbed or pressed by hand with a simple tool such as a brayer or roller. In contrast, in intaglio printing, the recessed areas are printed.
Relief printing is one of the traditional families of printmaking techniques, along with the intaglio and planographic families, though modern developments have created others.
By contrast, in the intaglio family of printing, the recessed areas are printed by inking the whole matrix, then wiping the surface so that only ink in the recessed areas remain. Much greater pressure is then needed to force the paper into the channels containing the ink, so a high-pressure press is normally needed. Intaglio techniques include engraving, etching, and drypoint.
In the planographic family of printing, the entire surface of the matrix is flat, and some areas are treated to create the print image. Planographic techniques include lithography and offset lithography.
The first relief-printed publication in the US, the multi-page newspaper Publick Occurrences Both Forreign and Domestick, was published on September 25, 1690.
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