Abstract: A heat-sensitive recording sheet which comprises a support, a white or light-colored pigment coating layer having an oil absorption determined by JIS K5101 of 75 ml/100 g or more on the support, and a heat-sensitive color forming layer comprising an electron donor colorless dye and an electron acceptor compound on the coating layer.

Abstract: A silver halide photographic light-sensitive element is described containing a cephalosporin compound in its silver halide emulsion layer of substantially the surface latent image type, or in its hydrophilic colloid layer. This light-sensitive element is prevented in the latent image fading.

Abstract: This invention relates to the production of information carriers on which the information is recorded along a track; the process of making the information carrier comprises a first step of materializing the track itself before recording any information by forming a groove in an auxiliary layer, the track thus being capable of being optically detected, and a second step of recording the information in a photosensitive layer in contact with the auxiliary layer along the track previously formed.

Abstract: A photo-sensitive and heat-sensitive composition consisting essentially of (a) a photooxidant, (b) a color-generator generating color when oxidized, (c) an acid promoting said color generation, (d) a cobalt (III) complex, (e) a photoreductant, (f) a hydrogen donator and (g) a chelating agent consisting of a dioxime compound having the general formula: ##STR1## (where n is an integer of 0 to 3, and R.sub.1 and R.sub.2 can each represent an alkyl, aryl or aralkyl group), and a recording element using the same.

Abstract: Multilayer printing plates having layers with differing moduli are made by exposing through a photographic negative a plurality of liquid layers of different photopolymerizable compositions.

Abstract: In an imaging film having a substrate over which is deposited a thin, opaque layer of an imaging material there is located on at least the outer side of said opaque imaging layer and, better still, on the opposite sides of said opaque layer of imaging material, thin, preferably vapor deposited, passivating layers forming a barrier against passage of oxygen and moisture. The passivating layer, or layers, in a flexible continuous amorphous film having a thickness generally no greater than about 500 Angstroms (A.degree.) and preferably less than 200 A.degree. and comprising an alloy or mixture of a Group IV oxide, most advantageously germanium oxide, and a stabilizing agent or agents, more particularly one or more different oxides of a metal or a semiconductor or a metal fluoride which stabilizes the amorphous character and chemical inertness of the Group IV oxide even when subjected to the elements of the surrounding atmosphere.

Abstract: Polychromatic glass articles and methods of producing such articles are disclosed in which the glass is activated by exposure to ultraviolet radiation and contains as a sensitizing agent an oxide of copper, samarium, terbium, praeseodymium, or europium.

Abstract: A novel desensitizing solution is disclosed which is applied to the surface of a lithographic printing plate coated with a photosensitive layer of a photopolymerizable composition, the desensitizing solution contains a hydrophilic colloid, a free radical polymerization inhibitor and water.

Abstract: A process for developing a light-sensitive material comprising a support having thereon at least one internal latent image-forming silver halide photographic emulsion layer which comprises, after imagewise exposure, developing the light-sensitive material with an alkaline solution of a developing agent in the presence of a compound represented by the formula I which is capable of selectively forming latent images in the inner portions of said silver halide upon development: ##STR1## wherein Y represents an acyl group or a cyano group and said acyl group and the 3-, 4- or 5-position of the pyridinium ring may be optionally substituted.

Abstract: A silver halide photographic light-sensitive material is described, comprising at least one silver halide photographic emulsion layer, wherein at least one layer contains a compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represents hydrogen, an aliphatic group, an aromatic group, or a heterocyclic group;R.sup.3 represents hydrogen or an aliphatic group, andX represents a divalent aromatic group.The light-sensitive material provides high-contrast negative images and good dot image quality.

Abstract: A photographic material containing protein as binding agent is hardened with a compound which contains at least two free vinyl sulfonyl groups in the molecule and which is a bisulfite addition product of a compound containing up to 6 vinyl sulfonyl groups.

Abstract: A photosensitive medium suitable for storing positive images and a method of using it are provided, the medium being a multilayer film comprising SnO.sub.2 and doped silver chloride and the method comprising an exposure step for negative imaging and a heating step for image reversal.

Abstract: A reversal development processing method for black and white silver halide photographic light-sensitive materials which comprises bleaching an imagewise exposed black and white silver halide photographic light-sensitive material with a bleaching solution containing at least one oxidizing agent capable of forming a water-soluble silver salt when reacted with the silver images of said exposed light-sensitive material in the presence of at least one bleach accelerating agent selected from the compounds represented by the general formulae (I) to (VIII) described in the specification.

Abstract: A silver halide photographic light-sensitive material is described containing a compound comprising at least one unsaturated group and at least one betaine group in at least one layer thereof.The photographic light-sensitive material has a high sensitivity without being accompanied by an undesirable increase in the formation of fog.

Abstract: A heat-sensitive recording composition with an improved image stability comprises 3-(N-methylcyclohexylamino)-6-methyl-7-anilinofluorane, 4,4'-isopropylidenediphenol capable of color-developing the fluorane through reaction by heating, fatty acid amide as a sensitizer and water-insoluble modified phenol resin having a softening point of 80.degree. to 190.degree. C., where at least 20% by weight of N-monosubstituted fatty acid amide is contained on the basis of total fatty acid amide, and 5 to 50% by weight of the water-insoluble, modified phenol resin is contained on the basis of the 4,4'-isopropylidenediphenol.

Abstract: A light-sensitive silver halide photographic material comprising a combination of a salt of tetrazolium containing only a non-metallic anion and a salt of tetrazolium containing a metallic anion.

Abstract: There is disclosed an image-forming composition and element comprising a cobalt(III) complex containing amine ligands, an aromatic dialdehyde which forms, in the presence of reduction products of the complex, a reducing agent for the complex, and an organic oxidizing agent to improve the image properties of the composition.

Abstract: A method of making a grid for a cathode-ray tube includes the process of etching an electrically conductive base member of a first material from two sides through related openings in electrically conductive layers of a second material which overlays the two sides of the base material. Etching continues until an aperture of sufficient size is formed that the overlying layers overhang the aperture in the base member.

Abstract: A long running printing press can be obtained by use of a photopolymerizable composition comprised of an ethylenically unsaturated oligomer, a solvent soluble diazonium resin, an organic film forming binder, and a photoinitiator system in described ratios.

Abstract: Surface sensitization of a chalcogenide glass is achieved by depositing an extremely thin silver layer, for example, by depositing a silver halide and developing and fixing in the absence of exposure. The sensitized chalcogenide can then be exposed to light to make it etch-resistant. Further exposure reverses the etch resistance, permitting positive or negative images and permitting erasure. Microlithographic resists such as masks can be formed.