Abstract: Thermo-optic writing on an information support in which an organic sublayer covered by a metal layer is deposited on a substrate. A plastic deformation due to the thrust exerted by the localized swelling of the sub-layer is created in the metal layer to produce a relief impression without piercing of the metal layer.

Abstract: A heat-mode recording material is disclosed. The material comprises a base which is overlaid with a recording layer made of a metal, semimetal or semiconductor containing at least hydrogen.

Abstract: Fluoran compounds of the formula ##STR1## wherein one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents n-alkyl having 6 to 12 carbon atoms and the other R's, independently of each other, represent hydrogen, alkyl having 1 to 12 carbon atoms, alkoxyalkyl having 2 to 8 carbon atoms or benzyl optionally substituted in the ring by nitro, halogen or alkyl having 1 to 6 carbon atoms.The fluoran compounds are particularly useful as color formers which give intense dark green color when they are brought into contact with an electron-accepting co-reactant.

Abstract: Improved thermal and mechanical barrier layers coated on the recording layer of an optical recording element are disclosed. The improved layers comprise water-soluble polymers having a glass transition temperature when dry of at least 100.degree. C. and preferably at least 150.degree. C. These barrier layers are easily coated and do not significantly degrade the performance of the element. Optional layers such as spacer layers and topcoat layers coated on the barrier layers are also disclosed.

Abstract: A recording member includes a recording layer capable of recording in response to applied heat. The heat is produced by absorption of high intensity radiation which defines recording information. The recording layer has a radiation absorption layer and an anti-reflection layer capable of preventing the reflection of radiation at the radiation absorption layer.

Abstract: A heat-sensitive recording material having a heat-sensitive layer composed mainly of a leuco dye and a phenolic compound used as a developer, said heat-sensitive layer containing as a binding agent any one or combinations of polyvinyl alcohol, oxidized starch and etherized starch, and methyl cellulose in a ratio by weight between 98:2 and 90:10.

Abstract: This invention discloses a heat sensitive recording sheet which contains, as a developer, at least one of the compounds represented by the general formula ##STR1## where R represents hydrogen, an alkyl radical of from 1 to 12 carbon atoms, a cycloalkyl radical of from 3 to 10 carbon atoms, an aralkyl radical of from 7 to 10 carbon atoms, and a phenyl radical, and may be identical to or different from each other, n is zero, or an integer of 1 or 2.The heat sensitive recording sheet of this invention has a sharper rise in developed color density and is advantageous for its handling and storage as well as gives a developed color image having an excellent fastness to light and water resistance in addition to very little decrease in density of the developed color image with time.

Abstract: A multi-color thermo-sensitive recording material comprises two thermo-sensitive coloring layers capable of forming different colors respectively at different temperatures, which are formed one over the other on a support member, and a discoloring layer comprising a cross-linking type resin, which is disposed between the two thermo-sensitive coloring layers, and which is cross-linked in the course of the coating of the thermo-sensitive layers, without being dissolved into any of the two thermo-sensitive coloring layers.

Abstract: A device for projecting ink droplets through a set of projection holes to print a pattern under selective electrical or light pulse control.A first plate formed with a large number of holes is placed in close proximity to the surface of the printing medium. A second plate a small distance from the first defines therewith a chamber in which the ink is locally heated by electrical current controlled by light selectively impinging on a photoconductive part of said second plate in register with each hole or each group of holes so as to form a pattern with constant or variable parts.

Abstract: 3-[(Alkoxy)(aryl or heteroaryl)methyl]-1H-indoles which are useful as color formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting 3-[(arylsulfonyl)(aryl or heteroaryl)methyl]-1H-indoles with alcohols in the presence of a base.

Abstract: A method of recording images on a radiation sensitive material comprising forming a layer of a radiation sensitive material comprised of a heterogeneous mixture of substances. At least one of the substances of the heterogeneous mixture serves as a binder capable of converting its states of aggregation in the mixture under the action of the intrinsic or reflected radiation obtainable from the object being recorded. Another substance of the heterogeneous mixture, in the form of particles, is capable of interacting with a force field. The layer is introduced in a force field and an image of the object being recorded is projeced on that layer. The produced image is fixed by converting the state of aggregation of the heterogeneous mixture. The proposed method makes it possible to record images in any spectral range of the intrinsic and reflected radiation of the object. Images of any objects can be recorded on that layer containing no silver halides.

Abstract: A recording material comprising a support having thereon a layer containing (i) at least one metal and (ii) a layer containing one or more metal sulfides other than GeS, metal fluorides or metal oxides. A mono-layer mixture of (i) and (ii) may also be used.

Abstract: A shallow relief non-bottoming printing plate is disclosed having a polymerized layer of less than about 0.020 inch and which includes a plurality of dispersed particles sufficient to create small protuberances in non-image or background areas to prevent bottoming. Photopolymerizable elements, as well as processing techniques, are also disclosed for making such printing plates.

Abstract: A recording material comprising a transparent support having formed thereon a recording layer containing a thermally coagulatable proteinaceous compound, the recording layer having an average optical density throughout the wavelength region of about 350 mm to 450 nm of at least about 1.5 is disclosed, which is suitable for preparing a reprographic material such as a photmask by flash exposure in heat conducting relation with an original.

Abstract: Aldehyde or ketone 0-[(3-indolyl)(aryl or heteroaryl)methyl]oximes which are useful as color-formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting 3-[(arylsulfonyl)(aryl or heteroaryl)methyl]-1H-indoles with aldehyde or ketone oximes in the presence of a base.

Abstract: A thermal recording element comprising a support having formed thereon a recording layer, a first protective layer of a halogenated polyolefin, polystyrene, polystyrene derivative, halogenated rubber or styrene-vinyltoluene copolymer formed on the recording layer; and a second protective layer of a polymer having strong film strength formed on the first protective layer.

Abstract: There is disclosed a cobalt(III) complex-containing photographic composition, element and process which can be made negative-working or positive-working. Featured are an exposure activatible image precursor composition and a photoinhibitor composition capable of inhibiting image formation in the image precursor composition.

Abstract: A novel imaging material comprising a substrate; a lead layer thereon including at least 20% by weight of lead and having a substantially dome shaped grain structure; and a stabilizing layer formed on said lead layer and comprising a specific metallic element or an organic polymer. The imaging material has a gradation, an excellent resolution and an improved storage stability. The imaging material can form an image thereon by a dry process even in a light room without the conventional development step.

Abstract: An improved heat-developable photosensitive material is disclosed which comprises an infrared rays-absorbing layer provided in contact with or adjacent to a layer comprising a reducible organic silver salt.

Abstract: An imaging system wherein a migration-type imaging member comprising a softenable layer containing agglomerable migration marking material is provided, and the member is exposed to an image pattern of electromagnetic radiation of sufficient energy to cause a simultaneous imagewise migration at least in depth in the softenable layer and agglomeration of the agglomerable migration marking material in the imagewise exposed areas of the imaging member. In another embodiment, a microscopically discontinuous layer of imaging material on a stable substrate is agglomeration or evaporation imaged by the inventive system.

Abstract: The imaging layer coated side of a heat-responsive recording medium is selectively heat-sinked by the raised portions of live skin tissue contacting the same so that only the unheat-sinked portions of the recording medium will reach an imaging temperature. The source of heat for the film may be a flash lamp directed against the opposite substrate side of the film where the electromagnetic energy thereof is converted into heat when absorbed by the substrate, or may be a source of externally applied heat transmitted through the substrate to the imaging layer of the film. In the latter case, the recording medium is preferably initially in spaced relationship with a heat contact plate which is to be contacted by a heat source, which may be the end face of a piston either pre-heated to a given temperature or having a current heatable resistance thereon to be pulsed with current. In the former case the plunger end face preferably has a low heat conductivity coating thereon.

Abstract: A novel dispersion imaging material comprising a substrate, a sublayer thereon comprising at least 70% by weight of a member selected from palladium, gold, germanium and combinations thereof and having a thickness of 5 A to 200 A, and a main imaging layer on said sublayer comprising at least 50% by weight of tin, and optionally as the outermost layer a protective layer comprising an organic polymer. The sublayer modifies the layer structure of the tin-based main imaging layer. The imaging material has a high safety in respect of toxicity as well as an excellent gradation and a high sensitivity. The imaging material can form thereon an image by a dry process even in a light room without the conventional development and fixation steps.

Abstract: A dry process high sensitivity imaging film includes a solid, high optical density and substantially opaque film of dispersion imaging material deposited on a substrate. The film of dispersion imaging material comprises a plurality of separate layers of different and substantially mutually insoluble metal components having relatively high melting points and relatively low melting point eutectics, and interfaces between said layers having relatively low melting points.

Abstract: Certain polyacetylenes exhibit reversible color changes at transition temperatures in the range -180.degree. to 220.degree. C., wherein the thermochromic cycles can be repeated many times with no apparent degradation and little change in spectroscopic properties.These thermochromic polyacetylenes are useful in temperature-indicator and indicia-display device applications.A process for laser-beam recording of images is described employing a thermochromic polyacetylene, in which the hysteresis properties of the polyacetylene can be suitably altered allowing for selectively storing or erasing the formed image.

Abstract: A Te(II) complex represented by the formula: RTeM(R').sub.3 wherein M is lead, tin, germanium or silicon; R and R' are alkyl or aryl is useful in an imaging material to provide a non-silver image. The imaging material can be a photographic material, especially a heat-developable photographic material containing, for example, a photosensitive metal salt other than the Te(II) material or other sources of developable nuclei.

Abstract: A dry-process imaging film which is sensitive to, and substantially simultaneously imaged and developed by, electromagnetic radiation above a threshold value applied thereto through an imaging mask. The film, in its preferred form, comprises a thin solid continuous, non-particulate film of a dispersion imaging material provided with a thin, flexible, protective overlayer of a polymeric resin. The film of dispersion imaging material is carried or supported on a flexible plastic substrate which may be transparent or light reflective.