albertype book printing chromotypography chromotypy chromoxylography collotype color printing drawing electronography electrostatic printing graphic artist graphic arts graphics gravure halftone engraving history of printing job printing letterpress letterpress photoengraving line engraving lithography lithogravure lithophotogravure mimeograph offset offset lithography onset painting palaeotypography photo-offset photochemical process photoengraving photogelatin process photographic reproduction photography photolithography phototypography phototypy photozincography planographic printing planography printing publication publishing relief printing relief-carving rotary photogravure rotogravure sheetwork stencil three-color printing two-color printing typography typolithography wood-block printing xerography xeroprinting xylotypography zincography