Abstract: A process for the production of full color, partial colored or two colored pictures, scenes, words, etc., on articles of aluminum or aluminum alloys. The process involves first forming a hard, dense, non-colored anodic coating of between about 0.4 mils and 1.0 mils on aluminum or aluminum base alloys by anodizing the aluminum in an acidic aqueous electrolyte comprising sulfuric acid, a polyhydric alcohol of from 3 to 6 carbon atoms and an organic carboxylic acid containing at least one reactive group in the alpha position; and coloring the coating by intimately contacting the unsealed coating with a paper containing a dye or dyes capable of subliming and then heating the surfaces causing the dye to sublime and transfer to the unsealed anodic film.

Abstract: This invention relates to a process for mass-production formation of aluminum oxide coatings on a plurality of aluminum or aluminum alloy articles by means of continuous anodic oxidation. The process is characterized by connecting one or more of the aluminum articles to the positive terminal of a power supply capable of maintaining constant current. Depending on the volume of work to be anodized, two or more power supplies are utilized with the negative terminals connected to common cathodes of a common anodizing tank and the positive terminals being electrically isolated from each other. Individual racks containing one or more aluminum articles are brought into contact with the positive terminals of the power supplies. Contact is made through a series of segmented bus bars of positive electrical potential corresponding to the number of power supplies and a system is used to move the racks through the common anodizing tank. Thus, continuous anodizing of one or a plurality of articles is accomplished.

Abstract: A method for applying a liquid photo polymer to a surface such that the photo polymer is uniform and holiday-free, the method comprising obtaining a plastic sponge and impregnating the plastic sponge with a liquid photo polymer comprising a solvent which slowly reacts with the plastic from which the sponge is formed. Thereafter, the sponge is brushed and/or drawn across the surface to deposit the photo polymer thereon, the application of the photo polymer being accomplished before the solvent in the photo polymer substantially disintegrates the sponge.