PRINTING IN GOLD INK
Several of the leading printing ink manufacturers are now making a special gold ink which gives a close imitation of gold bronzing. The Sleight Metallic Ink Company, of Philadelphia, is supplying an excellent gold ink which is particularly adapted to glazed paper. This ink is furnished in the form of a liquid and a bronze powder, and the printer mixes a fresh quantity of the gold ink for each job.
Printing in gold ink is done in the same way as other printing, with the exception of having rather a light impression, and the inking apparatus must be absolutely clean before the gold ink is put on. Rollers containing traces of regular printing ink, oil or grease, will seriously affect the quality of the gold ink. Heavy impression will cause the subject to press deeply into the paper, and this in turn will cause the gold ink to present a “ragged” appearance at the edges of type characters, rules, borders, etc. A light impression allows just the right amount of gold ink to transfer to the surface of the paper.
When printing a long run of paper with gold ink, the rollers and other inking parts of the press should be washed about every two hours. Fresh color is then put on, and this helps in keeping a bright color.