Encyclopedia Dubuque
"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
Marshall Cohen—researcher and producer, CNN
Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
Category:Planographers
PLANOGRAPHERS. Planographic printing means printing from a flat surface, as opposed to a raised surface (as with relief printing) or incised surface (as with intaglio printing). Lithography and offset lithography are planographic processes that use the property that water will not mix with oil. The image is created by applying a tusche (greasy substance) to a plate or stone. (The term lithography comes from litho, for stone, and -graph to draw). --Wikipedia
Companies which advertised themselves as planographers included:
Pages in category "Planographers"
This category contains only the following page.