Abstract: Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer and an electrically-conductive layer comprising electrically-conductive metal-containing particles dispersed in a binder system comprising a blend of a film-forming polymer and an anionic polymer. The combination of electrically-conductive metal-containing particles, film-forming polymer and anionic polymer provides a controlled degree of electrical conductivity and excellent adhesion to gelatin-containing layers, such as silver halide emulsion layers of photographic elements, in adhering contact with the electrically-conductive layer.

Abstract: Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer and an electrically-conductive layer comprising a dispersion in a film-forming binder of very small particles of antimony-doped tin oxide having a high antimony dopant level and a small crystallite size. Use of such particles provides a controlled degree of electrical conductivity and beneficial chemical, physical and optical properties which adapt the electrically-conductive layer for such purposes as providing protection against static or serving as an electrode which takes part in an image-forming process.

Abstract: A process of forming on a gold, silver or platinum metal surface of a substrate a superconductive crystalline mixed metal oxide thin film exhibiting superconductivity at a temperature in excess of 85.degree. K. A precursor of the superconductive thin film containing bismuth, strontium, calcium and copper is formed on the substrate surface and then thermally converted in the presence of oxygen to the superconductive thin film. Lead is added to the thin film precursor to raise the superconductivity of the completed thin film above 85.degree. K.

Abstract: This invention is directed to a method of forming an article comprised of a substrate and an electrically conductive crystalline rare earth alkaline earth copper oxide thin film containing an R.sub.1 A.sub.2 C.sub.3 crystalline phase over an R.sub.2 A.sub.1 C.sub.1 crystalline phase, where R.sub.1 A.sub.1 and C represent rare earth, alkaline earth, and copper, respectively.

Abstract: A superconducting film is disclosed which consists of a rare earth alkaline earth copper oxide having an R.sub.1 A.sub.2 C.sub.3 crystalline phase over an R.sub.2 A.sub.1 C.sub.1 crystalline phase.

Abstract: A circuit element is disclosed comprised of a substrate and an electrically conductive layer located on the substrate. The electrically conductive layer is comprised of a crystalline rare earth alkaline earth copper oxide. The substrate is formed of a material which increases the electrical resistance of the conductive layer when in contact with the rare earth alkaline earth copper oxide during crystallization of the latter to an electrically conductive form. A barrier layer is interposed between the electrically conductive layer and the substrate. The barrier layer contains magnesium, a group IVA metal, or a platinum group metal, either in an elemental state or in the form of an oxide or silicide.

Abstract: A dye-forming electrothermographic element comprises an electrically activatable recording layer comprising (a) a reducing agent or reducing agent precursor capable of being activated by a Lewis base; (b) a cobalt(III) Lewis base complex; and (c) at least one of (i) a reducible dye-forming compound that has an oxidation state above that of the conjugate dye, (ii) a dye capable of changing its wavelength of absorption by reaction with a Lewis base, and (iii) a dye-forming coupler capable of reacting with the oxidized form of the reducing agent in (a) to form a dye. A negative or positive dye image is formed in such a dye-forming electrothermographic element by applying an electrical potential imagewise to the element of a magnitude and for a time sufficient to produce in the image areas a charge density sufficient to produce a latent image; and, then, heating the element to a temperature and for a time sufficient to form a dye image in the element.

Abstract: A dye-forming electrically activatable recording (EAR) element which is capable of forming at least two dye images comprises an electrically conductive support bearing on one side of the support at least a dye-forming layer (A) responsive to negative polarity charge exposure and at least one dye-forming layer (B) responsive to positive polarity charge exposure and, optionally, other dye-forming layers. A multicolor dye image can be formed in the dye-forming electrically activatable recording element by multistep imagewise charge exposure in which the exposure steps are reversed in electrical polarity at each step. The reversal of polarity of exposure at differing charge density levels enables formation of a dye image in at least one layer without formation of a dye image in another layer. Processing of the exposed dye-forming electrically activatable recording element is carried out by thermal processing or by means of processing solutions or baths.

Abstract: A method of generating visible multicolor images using a single wavelength laser beam is disclosed.

Abstract: An electrically activatable recording (EAR) element capable of producing a positive image comprises an electrically activatable recording layer comprising a transition metal complex selected from the group consisting of Group VIIIB and Group IB metal complexes in a film forming ionic polymer that is capable of undergoing an imagewise reorientation upon exposure to electric current and, upon such exposure, development of an image in the exposed areas of the recording layer is restricted. The recording element is light handleable and provides a non-silver positive image upon exposure and processing.

Abstract: In an electrically activatable recording element and process comprising a polymeric electrically active conductive layer improvements are provided wherein the polymeric electrically active conductive layer comprises a polymer that has recurring units represented by the structure: ##STR1## wherein R is hydrogen or alkyl containing 1 to 20 carbon atoms;R.sup.1 and R.sup.3 are individually hydrogen or methyl;R.sup.2 is alkyl containing 2 to 20 carbon atoms;x is 0 or 1;y is 0 to 4;R.sup.4 is C.sub.6 H.sub.5-z X.sub.z ; wherein z is 1 to 5;X is chlorine, bromine or iodine;n is 40 to 100 weight percent;and the polymer has a glass transition temperature within the range of 20.degree. C. to 40.degree. C.

Abstract: In an electrically activatable recording (EAR) element comprising an electrically conductive support bearing (a) a first layer, and, contiguous to the first layer, (b) an electrically activatable recording layer, image formation in the electrically activatable recording layer is aided when the first layer (a) consists essentially of a compound selected from the group consisting of silver chlorides, silver bromides, silver iodides, transition metal bromides, transition metal chlorides, alkali metal chlorides, alkali metal bromides, alkali metal iodides, mixed chlorides, bromides and iodides of such metals and combinations of such compounds. The EAR element is light handleable when free of photosensitive silver halide and provides an image, after electrically activated exposure by dry development processing or by processing in a processing solution or bath.

Abstract: In an electrically activatable recording element improvements are provided by an electrically conductive interlayer (ECI layer) separating (a) an electrically activatable recording layer from (b) a photoconductive layer or electrical activating means. The ECI layer comprises electrically conductive particles uniformly dispersed in an electrically insulating binder. The interlayer enables imaging with a minimized air gap between (a) and (b). The recording element is room light handleable. The element provides an image by dry development processing or by means of processing solutions.

Abstract: A dye-forming electrically activatable recording element comprises an electrically conductive support having thereon (a) an electrically activatable recording layer comprising in an electrically conductive polymeric binder, an organic silver salt and a reducing agent, (b) a photoconductive layer separated from (a) by an air gap of up to 20 microns, and (c) an electrically conductive layer on (b), wherein the recording layer (a) comprises in reactive association, (A) a dye-forming coupler, and (B) an oxidation-reduction combination comprising (i) an organic silver salt oxidizing agent, with (ii) a reducing agent which in its oxidized form forms a dye with the dye-forming coupler. The recording element can be room light handleable and can provide a dye image and silver image by dry development processing.

Abstract: In an electrically activatable recording element, such as one comprising an electrically conductive support having thereon, in sequence: (a) a polymeric electrically active conductive (EAC) layer, (b) an electrically activatable recording layer comprising (A) a dye-forming coupler, and (B) an oxidation-reduction combination comprising (i) an organic silver salt oxidizing agent consisting essentially of a silver salt of a 1,2,4-mercaptotriazole derivative, with (ii) a reducing agent which, in its oxidized form, forms a dye with the dye-forming coupler, (c) a photoconductive layer separated from (b) by an air gap of up to 20 microns, and (d) an electrically conductive layer; improvements are provided by means of a polymeric EAC layer (a) consisting essentially of a vinyl addition polymer, such as poly(methyl acrylate-co-vinylidene chloride). The recording element is room light handleable and provides a dye image and silver image by dry development processing.

Abstract: In an electrically activatable recording element, such as one comprising an electrically conductive support having thereon, in sequence: (a) a polymeric electrically active conductive (EAC) layer, (b) an electrically activatable recording layer comprising (A) a dye-forming coupler, and (B) an oxidation-reduction combination comprising (i) an organic silver salt oxidizing agent, such as a silver salt of a 1,2,4-mercaptotriazole derivative, with (ii) a reducing agent which, in its oxidized form, forms a dye with the dye-forming coupler, (c) a photoconductive layer separated from (b) by an air gap of up to 20 microns, and (d) an electrically conductive layer; improvements are provided by means of a polymeric EAC layer (a) comprising a halogen containing polyester, such as poly(2,2'-oxydiethylene:2,2'-dimethyl 1,3-propylene 50:50-2,5-dibromoterephthalate) and poly(ethylene:2,2-dimethyl-1,3-propylene 50:50-2,5-dibromoterephthalate).

Abstract: Electrographic image patterns are developed using marking particles containing a catalyst or catalyst precursor. The developed image pattern is then amplified by contacting it with high gain chemical-redox amplification composition.

Abstract: A non-silver, charge-sensitive recording composite element having an ohmic resistivity of at least about 1.times.10.sup.10 ohm-cm comprising (a) a first electrically conducting layer in association with (b) a photoconductor layer, (c) a non-silver, electrically activated recording layer comprising an image-forming combination of (i) a certain tellurium (II) coordination complex with (ii) a reducing agent, and a binder and (d) a second electrical conducting layer can provide a non-silver image having a density equal to silver images. Silica, especially colloidal silica, is also very useful in the recording layer. The recording element can be room light handleable and can provide a developed image by dry development processes.

Abstract: A non-silver, charge-sensitive recording composite element having an ohmic resistivity of at least about 1.times.10.sup.10 ohm-cm comprising (a) a first electrically conducting layer in association with (b) a photoconductor layer, (c) a non-silver, electrically activated recording layer comprising an image-forming combination of (i) a certain tellurium (II) coordination complex with (ii) a reducing agent, and a binder and (d) a second electrical conducting layer can provide a non-silver image having a density equal to silver images. Silica, especially colloidal silica, is also very useful in the recording layer. The recording element can be room light handleable and can provide a developed image by dry development processes.

Abstract: An imaging combination comprising (i) a tellurium (II) or (IV) compound as an oxidizing agent and (ii) a reducing agent provides an improved amplified image. This imaging combination is useful in heat-developable materials containing sources of physically developable nuclei. A developed image can be provided in the material containing the developable nuclei and can be provided by heating the element to moderately elevated temperatures.