Printing Australia is currently printing polymer notes for 18 countries. Printmaking is the process of creating artworks by printing, normally on paper. The contaminants are mostly printing ink and stickies. E13b is the version specifically developed for offset litho printing. Letterpress printing is a technique of relief printing. Uncut currency sheets are available from the Bureau of Engraving and Printing. Boston is also a printing and publishing center. But how long will printing last, which is dependent on paper? One of the main difficulties in lenticular printing is colour synchronisation. Before the invention of the printing press ca. Kodak designs and manufactures products for flexography printing. Dithering is analogous to the halftone technique used in printing. Sample papers in the first printing of the sixth edition contained errors. Screen printing lends itself well to printing on canvas. Examples are newspapers, thermographic trade printing of business cards, and network hubs.