The Method of Increasing Density of Dark Tone for Tracing Paper

It is applicable to printings not strictly requested, such as general patterns, words, lines, color blocks, etc. Having finished the draft by computer, print out tracing paper at contrast with a laser printer of 1200DPI and up. If the printed tracing paper is not dark enough and unable to make plate, spray special darkening liquid evenly on the surface of carbon powder of tracing paper and roll it over with pushing bar. Then wait for 30 seconds and dry it with hot air to complete the processing of tracing paper which substitutes the negative film.