Abstract: In a method for preparing a mosaic luminescent screen, islands of dry precoating material are adhered to a glass support surface at the sites of the mosaic parts of the screen. Then, the mosaic parts of the screen are deposited on the islands by the slurry-direct photographic method, including development with a turbulent aqueous developing medium. The use of islands provides the necessary adherence during development of the mosaic parts with a substantial reduction in the amount of precoating that must later be removed.

Abstract: A method of metallizing a phosphor screen including the steps of coating the phosphor screen with an aqueous emulsion containing an acrylic copolymer, drying the coating and depositing a metal layer on the dry coating, the copolymer consists essentially of about34 to 80 weight percent of one member of the group consisting of methyl methacrylate and ethyl methacrylate,20 to 60 weight percent ethyl acrylate and1 to 14 weight percent methacrylic acid.The emulsion may contain minor amounts of (a) colloidal silica, (b) water-soluble polymer and/or (c) dispersing agent.

Abstract: A layer of an aqueous solution containing polyvinyl alcohol and a zirconyl compound is applied to a clean glass surface and dried to produce a precoating thereon. A subsequently-applied phosphor-photobinder coating thereon is exposed to a light image and then developed with a turbulent aqueous liquid. The phosphor-photobinder coating exhibits improved adherence to the surface during the developing step due to the presence of the precoating.