Abstract: A laminate for use as a surface laminate in a multi-layer printed circuit board. The laminate is comprised of a film substrate formed of a first polymeric material. At least one layer of a flash metal is applied to a first side of the film substrate. At least one layer of copper is disposed on the layer of flash metal. An adhesive layer formed of a second polymeric material has a first surface that is attached to a second side of the film substrate.

Abstract: There are provided an ultraviolet-cutoff material comprising a material, capable of cutting off ultraviolet light, coated with a clay mineral, and a process for preparing an ultraviolet-cutoff material, comprising the steps of dispersing a clay mineral in a medium, dispersing a material capable of cutting off ultraviolet light in a medium, mixing the two dispersion liquids prepared in the steps a) and b) together to coat the material capable of cutting off ultraviolet light with the mixture, subjecting the mixture to solid-liquid separation and heating the solid matter provided in the step d).

Abstract: A method of producing a high resolution expanded analog gray scale mask is described. Using an inorganic chalcogenide glass, such as a selenium germanium, coated with a thin layer of silver, a gray scale mask may be produced with accurate control of the size, uniformity and variance of the pixels. The selenium germanium glass is composed of column structures arranged perpendicularly to the substrate giving a possible edge precision of 100 .ANG.. The column structures also prevent undercutting during the etching process, thus permitting pixels to be placed close together. Accordingly, selenium germanium may be used as a high resolution gray scale mask with an expanded analog gray scale. The gray scale mask may be used to impress information as a modulated thickness on a selenium germanium photoresist film on an inorganic substrate. The selenium germanium photoresist film may then transfer the gray scale to the substrate.