Abstract: Photolithographic materials for use in the production for example of microelectronic circuits and sensitizing and printing elements in offset printing plates show marked improvement in sensitivity, non-critical outline developement and good shelf life as well as high resolving power while remaining sensitive to exposure from a wide variety of radiation sources if comprising a carrier base and on the carrier base a thin homogeneous or emulsion layer of at least one photosensitive substance which is capable upon exposure to radiation of yielding a latent positive image and exhibiting photoselective capacity for dissolution in alkaline developer according to such image, the photosensitive substance being either unreactive with the carrier base on exposure to radiation or reactive with the carrier base and isolated from the carrier base by interposition of an intermediate layer which does not react with the photosensitive substance when the latter is exposed to radiation.

Abstract: Photolithographic methods for the production for example of microelectronic circuits and sensitizing and printing elements in offset printing forms show marked improvement in sensitivity, non-critical outline development and good shelf-life as well as high resolving power and good adhesion of photosensitive coatings to a carrier base while remaining sensitive to exposure from a wide variety of radiation sources, by incorporating in or on a chalcogenide photosensitive layer, one or more materials selected from dyestuffs having the capacity for dyeing tannined cotton, dyestuffs having the capacity for dyeing synthetic fibres, compounds capable of acting as accelerators, antioxidants or age resistors in the vulcanization of elastomers and developing agents effective in the development of silver halide-based photographic materials. Many of the aforesaid advantages are also achieved if the dyestuff(s) is incorporated in an alkaline developing agent of the usual type.

Abstract: There are disclosed a method and an apparatus for the production of photographic materials by vacuum deposition of silver halides on a continuously moving substrate. The silver halides are heated in a crucible placed within a vacuum chamber by radiant heating means disposed outside the chamber and the crucible is so shaped and positioned so close to the continuously moving substrate that a stream of silver halide vapour impinges perpendicularly on the substrate and silver halide is deposited on the substrate at a rate of 200 to 2000 A/sec. The substrate is usually primed with a layer of a material which enhances deposition of the silver halide thereon. The use of the photographic material thus produced in the production of direct positive and negatively emitting photographic materials is described.

Abstract: Apparatus for the vapor deposition of volatizable solid substances on continuously moving substrates, more particularly for the production of photographic materials by vapor deposition of silver halides on continuosly moving substrates, is constructed so as to prevent direct contact between heating means for a crucible for the solid substance and the solid substance therein and to enable a stream of vapor of the solid substance to be produced which is of high intensity enabling a high rate of growth of the deposited layer to occur.

Abstract: This invention relates to a photographic material yielding upon exposure a direct-positive image and to a process for the production of such material.