How Paper Boxes Are Made / A practical and instructive book telling how the beginner may manufacture all kinds of paper boxes, with special chapters on the printing department for paper box plants, embossing, gold-leafing, label work, etc.

by Robert F. Salade

SPECIAL PROCESS FOR PRINTING GLAZED WRAPPERS

When printing plates or type forms on highly glazed paper, for box wrappers, labels, etc., a beautiful imitation of lithography may be had by following this process:

Add to either black or blue ink a small quantity of German blue powder—the kind that is carried by a first class drug store but not the kind that is furnished by the average paint dealer. The genuine German blue powder will prevent black or blue printing ink from “picking” or “lifting” the surface of glazed paper in the printing, no matter how bold the face of the plate or type may be. The German blue powder also produces a soft, dull-finish effect in the printing which makes the work appear like lithography.

Add to any shade of red ink a small quantity of Vermilion powder for the same purposes mentioned. Vermilion powder will also do for any shade of brown printing ink.

Add to any shade of green ink a small quantity of Paris green powder.

When adding any of the powders mentioned to the printing ink, use a printers’ pallet knife for mixing the powder into the ink. The mixing should be done on a small sheet of glass or on a stone.

If the printing ink is too heavy in body after the powder has been added, a small quantity of reducer will be needed. Paste dryer, or a few drops of kerosene will do.

Use a “hard” tympan for the make-ready, and do not allow the press to stand idle for a long time, as this kind of printing ink dries rapidly on the press as well as on the stock.