Abstract: A system for the preparation of dot etched lithographic films, consisting essentially of a light sensitive silver halide material for tanning development and an etching solution, in which system the light sensitive material of various layers contains at least one colorant, e.g., pigment or dye with acid groups, which is stable in the processing baths and forms with bases salts soluble in organic solvents, and the etching solution contains a base that ionizes the colorant, and a solvent for the resulting ion pair.

Abstract: A method of manufacturing a mask support or diaphragm of SiC for X-ray lithography masks is set forth in which a SiC layer is deposited by means of chemical vapor deposition (CVD) on a substrate in the form of a monocrystalline silicon wafer on at least one of the two major surfaces of the monocrystalline silicon wafer, after which the monocrystalline silicon wafer is removed except an edge region in a selective etching step. According to the invention the following processing steps are used:(a) deposition of the SiC layer with the monocrystalline silicon wafer first being heated in the apparatus provided for the deposition process to a temperature in the range of 1000.degree. to 1350.degree. C. in a H.sub.2 atmosphere and then being etched by a suitable etchant and subsequently being rinsed under the influence of H.sub.2, whereupon the SiC layer is provided from a gas atmosphere containing silicon and hydrocarbons, after which the coated substrate is cooled in a H.sub.

Abstract: Novel laminate structures incorporating a thin metal layer which is of a thickness capable of converting incident microwave energy into thermal energy. The thin metal layer produces a greater heating effect than is produced by the same metal layer directly supporated on a polymeric film layer. The laminate is useful in the microwave heating of a variety of food products.

Abstract: A method for enhancing fingerprint images comprises the steps of applying a chemical compound to the fingers to be printed in which the compound contains a first constituent in the form of a conventional ink or inkless reagent. The first constituent is arranged by itself (i.e., ink) or in conjunction with a developer (i.e., inkless) to provide a visible image of a fingerprint when applied to a porous surface, such as a conventional fingerprint card under light within the visible spectrum. A second constituent is included in the compound which is arranged to fluoresce within the visible spectrum (i.e., 500 to 650 nm) when subject to U.V. radiation, preferably centered at 550 nm.The compound from the fingers is then deposited onto a porous surface and a visible image is formed therefrom representing the ridge patterns of the fingers. The surface is then illuminated with visible and ultraviolet light and the fluorescence of the second constituent enhances the brightness of the image.