Abstract: An image-forming method which comprises: imagewise exposing a light-sensitive material comprising a light-sensitive layer which contains silver halide, a reducing agent and a polymerizable compound provided on a support to form a latent image of the silver halide; simultaneously or thereafter developing the light-sensitive material to polymerize the polymerizable compound within the area where the latent image of the silver halide has been formed; and pressing the light-sensitive material on an image-receiving material having a transparent support to transfer the obtained image to the image-receiving material.

Abstract: A positive image forming method is disclosed. Said method comprises in sequence the steps of subjecting to imagewise exposure a silver halide photographic material having a silver halide emulsion layer containing a non-prefogged internal image forming silver halide, increasing the surface sensitivity of said silver halide in the substantial absence of water and performing development.

Abstract: A developer sheet useful in forming reproductions which have a controllable gloss finish or in forming transparencies comprising a support having a layer of a finely divided, thermoplastic, developer material on the surface thereof, said developer material being capable of reacting with a color precursor to produce a visible image and being capable of coalescing into a thin film which imparts gloss to said image upon application of heat and/or pressure.The developer sheet comprising a support having a layer of a finely divided thermoplastic developer material on the surface thereof can additionally comprise oil-containing microcapsules such that upon microcapsule rupture, the oil plasticizes the developer material.

Abstract: A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide color photographic material contains a magenta dye forming coupler represented by the general formula (I) and a compound represented by the general formula (II) in the same layer ##STR1## wherein R.sub.1 is represents an aromatic group, an aliphatic group or a heterocyclic group; R.sub.2 represents a substituent; Za, Zb, Zc and Zd, which may be the same or different, each represents an unsubstituted methine group, a substituted methine group or --N.dbd.,(R'--COO.sup.-).sub.n M.sup.n+ (II)wherein R' represents a substituent which imparts a diffusion-resistant property to the compound represented by the general formula (II); M.sup.n+ represents a hydrogen ion, a metal ion or an ammonium ion; and n represents an integer from 1 to 4.

Abstract: A backing layer comprising a combination of poly(silicic acid) and a water soluble hydroxyl containing polymer or monomer that is compatible with poly(silicic acid) on the side of a support opposite that containing the imaging layer of a thermally processable element enables improved conveyance of the element and reduced static electricity effects during manufacturing and elimination of Newton Rings formation during duplication of the recorded images, without undesired sensitometric effects. A developed visible image is provided in an exposed silver halide photothermographic element comprising such a backing layer by uniformly heating the photothermographic element to moderately elevated temperatures. The described backing layer is also useful on thermographic elements.

Abstract: A method for the formation of a photographic image including a heating step, comprising heating a photographic material in the presence of at least one compound selected from those represented by formulae (I) and(II) ##STR1## wherein A represents a non-metallic atomic group forming a carbocyclic aromatic ring or a heterocyclic aromatic ring;X represents a nucleophilic group or a precursor thereof;Q represnts a hydrogen atom or a substituted or unsubstituted alkyl, cycloalkyl, or aryl group; andPUG represents a photographically useful group.

Abstract: A developer sheet having reduced tack useful in forming reproductions having a controllable gloss finish or in forming transparencies is provided. The developer sheet has a support with a layer on the surface of the support of a finely divided thermoplastic developer material and a non-reactive, non-scattering pigment. The developer material is capable of reacting with a color precursor to produce a visible image while the pigment reduces tack. Both the developer material and the pigment are capable of forming an essentially transparent film upon the application of heat and/or pressure.

Abstract: A light-sensitive material comprising a light-sensitive layer which contains silver halide, a reducing agent and a polymerizable compound provided on a support, characterized in that the light-sensitive layer further contains a silver diazotate having the following formula:Ar--N.dbd.N--O--Ag(L).sub.nin which Ar is an aryl group or a heterocyclic group, each of which may have one or more substituent groups; L is a ligand; and n is 0, 1 or 2. Image-forming methods utilizing the light-sensitive materials are also disclosed.

Abstract: A overcoat layer comprising poly(silicic acid) ##STR1## on a thermally processable element enables reduced release of volatile components from the element during thermal processing. The overcoat layer also can optionally comprise other water soluble polymers. A developed visible image is provided in an exposed silver halide photothermographic element comprising such an overcoat by uniformly heating the photothermographic element to moderately elevated temperatures without release of volatile components. The described overcoat is also useful on thermographic elements.

Abstract: An image forming process including a heating step is disclosed. The process comprises conducting said heating step in the presence of at least one compound represented by formula (I), (II), or (III). ##STR1## wherein R.sup.1 represents ##STR2## wherein R.sup.11 and R.sup.12 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted alkyloxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted arylthio group or a substituted or unsubstituted amino group; R.sup.11 and R.sup.

Abstract: An enhanced optically sensitive medium is disclosed which uses an organic charge transfer complex as the switching material. The organic charge transfer complex includes at least one moiety in an oxidized state. An enhancement mechanism is taught which provides a secondary source of neutral molecules of said at least one constituent moiety in the neutral or altered oxidation state. For example, with CuTCNQ used as the switching material, the erasing characteristics can be improved by using a covering dispersion having a matrix polymer interspersed with neutral molecules of TCNQ.degree..

Abstract: A recording medium for reflective readout in an optical information recording system. The medium comprises a substrate such as PET or PMMA on emulsion layer of silver halide material and an optical protective layer. The emulsion is exposed to a laser source to form a latent data image and is then developed to exhibit a glossy silver metallic image. Playback uses established systems.

Abstract: A transfer imaging system employing photosensitive microcapsules useful in obtaining high gloss images wherein the developer sheet is overcoated with a discontiuous layer of a thermoplastic polymeric pigment which is fused into a thin essentially transparent polymeric film following development.

Abstract: An imagewise bleachable composition is described comprising a dye in reactive association with a mesoionic compound. The composition may be bleached by radiation at wavelengths between 200 and 1000 nm.

Abstract: Photographic silver halide is spectrally sensitized by means of at least one bleachable spectral sensitizing dye comprising a cyanine dye nucleus and a particular N-methylene substituent. The spectrally sensitized photographic silver halide is useful in a photothermographic material. An image in the photothermographic material, after exposure, is developed and the spectral sensitizing dye is bleached, especially at elevated pH, by heating the photothermographic material to processing temperature.

Abstract: A photothermographic element having a strippably-adhered, radiation-absorbing, antihalation layer is disclosed. The element comprises at least one imageable layer adhered to one surface of a support base, and an antihalation layer having a resistance greater than 1500 ohms per square, strippably adhered to any exposed surface of said element, said antihalation layer having a delaminating resistance in the range of 6 to 50 g/cm, a layer strength in g/cm greater than its delaminating resistance, and an optical density of at least 0.1.

Abstract: A process for the production of a thermo-developable type diazo copying material which comprises the steps of adding a heat fusible color assistant having a melting point of 50.degree. to 150.degree. C. to at least one selected from the group consisting of (a) an aqueous dispersion A containing a diazonium salt and fine particles of a hydrophobic resin consisting of a polymer of vinyl chloride, vinylidene chloride, styrene, acrylic ester, mechacrylic ester or olefin or a copolymer containing at least one member of aforesaid monomers as the constitution unit or a mixture of said polymer with said copolymer and (b) an aqueous solution or dispersion B containing coupler; then applying these aqueous dispersion A and aqueous solution or dispersion B onto a substrate in the order named; and drying same.

Abstract: Color photographic images are produced by decomposing hydrogen peroxide on nuclei present in imagewise distribution and bleaching out a dye by the hydrogen peroxide on those parts of the image where no such nuclei are present.

Abstract: Photosensitive silver halide grains that are thin tabular grains having an average grain thickness of less than 0.3 microns provide advantages, including improved spectral sensitization and image tone, in a photothermographic material comprising photosensitive silver halide and a photosensitive silver halide processing agent. An image is developed in such an exposed photothermographic material by heating the material, such as to a temperature within the range of about 90.degree. C. to about 180.degree. C.

Abstract: The present invention is directed towards a silver halide photographic material which has a reducing agent for silver halide or a precursor thereof and a compound M.sub.1 H.sub.m (PO.sub.n).sub.i.jH.sub.2 O which generates base when heat is applied. M is a metal from the Groups IA and IIA of the Periodic Table, 1 and i are individually integers from 1 to 3, m is an integer from 0 to 4, n is 3 or 4, and j is an integer from 0 to 12.

Abstract: A light-sensitive mixture is disclosed which contains a water-insoluble, aqueous-alkali-soluble binder, a light-sensitive o- or p-quinone-diazide or a mixture of (a) a compound which generates or splits off an acid on exposure to light and (b) a compound having at least one C--O--C group which can be cleaved by acid, and a phenol compound having 1 to 3 benzene nuclei which are mutually linked by single bonds, carbonyl groups, ether groups, thioether groups or optionally substituted methylene groups, and having at least one phenolic hydroxyl group and at least two substituents of the formula --CH.sub.2 OR, in which R is hydrogen or a lower alkyl or acyl group. The mixture is used for the preparation of light-sensitive copying material, preferably for the preparation of planographic printing forms. The addition of the phenolic compound has the effect that the developed printing forms can be baked at lower temperatures than hitherto in order to extend the printing run.

Abstract: A process for forming photographic images comprising a silver image and a dye image, comprising development processing an imagewise exposed silver halide photographic light-sensitive material containing a 4-alkoxy-1-naphthol represented by the formula (I) ##STR1## wherein R represents an alkyl group, an alkoxyalkyl group, or a hydroxyalkyl group, and the number of carbon atoms in the substituent represented by R is from 1 to 4.The process of this invention is particularly useful in the field of X-ray photography, in order to provide an image of increased density for a given silver content. A novel silver halide photographic light-sensitive material includes the above 4-alkoxy-1-naphthol in a photographic colloid layer thereof, preferably the silver halide emulsion layer.

Abstract: An image forming method comprising forming a silver image on a photographic material, which comprises a substrate having a silver halide-binder emulsion layer thereon, by exposing and developing the photographic material, heating the photographic material in a gaseous atmosphere containing oxygen until binder at developed silver image areas is substantially removed, and then dissolving away the image-forming silver to leave thermally decomposed binder at the non-silver image areas.

Abstract: A radiation curable printing medium suitable for screen printing on glass, metal and ceramics which is to be cured and subsequently fired, comprising(a) 4 to 25% by weight of a polymerizable, liquid prepolymer containing at least about two ethylenically unsaturated end groups;(b) 4 to 15% by weight of at least one ethylenically unsaturated polymerizable monomer containing a polar functional group;(c) 60 to 90% by weight of a ceramic frit; and(d) 0.02 to 2% by weight of a polymerization inhibitor.

Abstract: Imaging means, such as a tetrazolium salt, capable of reduction to form a visible image is present in a radiation-sensitive layer in combination with a photoreductant incorporating one or more labile hydrogen atoms and capable of producing a reducing agent precursor in radiation-struck areas of the layer. An image is produced in the layer by processing the layer after imagewise exposure to actinic radiation.

Abstract: A method for making a reflective data storage medium by creating a volume concentration gradient of silver precipitating nuclei on one surface of a silver halide emulsion coated photoplate. This volume concentration is then built up by a silver diffusion transfer negative development using primarily solution physical development until the surface becomes reflective. Lastly, a thermal annealing step is used to increase reflectivity, recording sensitivity and produce a more uniform contrast ratio.

Abstract: A method for producing a relief, which comprises forming a layer of a pattern on the surface of a sheet made of a material having the property of increasing in volume when heated, said pattern being made of a material having a stronger ability to absorb light than the aforesaid material, and then irradiating strong light uniformly on the entire surface of the sheet to selectively heat that portion of the sheet which is adjacent the undersurface of the pattern layer, whereby the pattern layer is raised from the sheet surface corresponding to the increase of the volume of the sheet portion.

Abstract: Films are disclosed which are constituted essentially of iodides of heavy metals to which catalysts or sensitizing agents are added to make the films highly sensitive to light and current at room temperature, thus increasing the speed of writing and erasing cycles. The disclosure provides for producing and erasing images on such light and current sensitive films prepared on substrates such as ordinary paper or transparent non-reactive materials. Marking on the films is achieved by light e.g., laser beam and Xenon lamp, or electrical current. Exemplary erasing is done by application of heat. Several examples are disclosed of the formation of these films adherently on non-reactive surfaces.

Abstract: A photographic material for the production of an image in a dry process by forming a vesicle image upon the decomposition of a peroxide compound at image nuclei of silver by providing a layer containing a silver salt which forms upon exposure to light, in imagewise distribution, image nuclei. The silver salt has a grain size of less than 0.3 .mu.m and is present in the layer in an amount of from 1-500 mg/m.sup.2.

Abstract: A method of manufacturing embossed articles of a preset configuration utilizing a material sensitive to electromagnetic and corpuscular radiation. The method consists in coating a backing with a layer of metal, applying a barrier layer to the metal layer, coating the barrier layer with a layer of inorganic matter capable of interacting chemically with the metal layer and forming the products of interaction whose physical and chemical properties differ from those of the metal layer and the layer of inorganic matter, in projecting a picture of a preset configuration on the applied layers, exposure, and in the removal of the unnecessary portions of the layers until an embossed article of a preset configuration is produced. The barrier layer is made of a material different from the layer of metal and the layer of inorganic matter and inert with respect to the metal layer and the layer of inorganic matter in absence of electromagnetic and corpuscular radiation.

Abstract: A heat bleachable material comprises (i) at least one hexaarylbiimidazole with (ii) at least one dye, especially an antihalation or filter dye, that is reactive with the product of the hexaarylbiimidazole formed upon heating the material to a temperature above about 90.degree. C. This provides a material that becomes at least 40% colorless within about 20 minutes, typically within about 30 seconds, upon heating to a temperature as described. The dye-containing material is especially useful for antihalation and filter purposes in a photographic element. The material can be a heat bleachable dye layer of a photothermographic element. The heat bleachable dye layer can also be useful in a thermographic element.

Abstract: A photographic speed-increasing concentration of a certain organic photographic speed-increasing electron acceptor provides increased photographic speed in a charge-sensitive recording composite material having an ohmic resistivity of at least about 1.times.10.sup.10 ohm-cm. The charge-sensitive recording material can comprise (a) a first electrically conducting layer in association with (b) a photoconductor layer, (c) an electrically activated recording layer comprising an image-forming combination of (i) an organic, heavy metal salt oxidizing agent with (ii) a reducing agent and (iii) the described speed-increasing electron acceptor, and a binder, and (d) a second electrical conducting layer. This recording material can be room light handleable and can provide a developed image with increased speed by dry development subsequent to electrical exposure.

Abstract: A photographic speed-increasing concentration of a certain organic photographic speed-increasing electron acceptor provides increased photographic speed in a charge-sensitive recording composite material having an ohmic resistivity of at least about 1.times.10.sup.10 ohm-cm. The charge-sensitive recording material can comprise (a) a first electrically conducting layer in association with (b) a photoconductor layer, (c) an electrically activated recording layer comprising an image-forming combination of (i) an organic, heavy metal salt oxidizing agent with (ii) a reducing agent and (iii) the described speed-increasing electron acceptor, and a binder, and (d) a second electrical conducting layer. This recording material can be room light handleable and can provide a developed image with increased speed by dry development subsequent to electrical exposure.

Abstract: A photothermographic element can comprise a support and on the support or in the support an antihalation or filter component that comprises a heat bleachable material comprising (i) at least one hexaarylbiimidazole with (ii) at least one dye, especially an antihalation or filter dye, that is reactive with the product of the hexaarylbiimidazole formed upon heating the material to a temperature above about 90.degree. C. This provides an antihalation or filter material that becomes at least 40% colorless within about 20 minutes, typically within about 30 seconds, upon heating to a temperature as described. The antihalation or filter material can be a heat bleachable dye layer of a photothermographic element.