Nov 23, 2010
It's nice getting to know the way people found to make publishing costs cheaper back then. Lithography was one of the cheapest ways of printing illustrations and it has got a really classy look.
Lithography originally used an image drawn in wax or other oily substance applied to a lithographic stone as the medium to transfer ink to the printed sheet. In modern times, the image is often made of polymer applied to a flexible aluminum plate. The flat surface of the plate or stone is slightly roughened, or etched, and divided into hydrophilic regions that accept a film of water and thereby repel the greasy ink, and hydrophobic regions that repel water and accept ink because the surface tension is higher on the greasier image area which remains dry. The image may be printed directly from the stone or plate (in which case it is reversed from the original image) or may be offset by transfer to a flexible sheet, usually rubber, for transfer to the printed article.
Here's a brief selection of this art. I hope you enjoy these. Cheers! ;)