Abstract: A heat-developable photographic material having improved preservability, which comprises a support having thereon at least one heat-developable photgraphic layer, said photographic material containing a dye represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.3 each represents an unsubstituted or substituted alkyl group or alkenyl group;R.sub.2 represents a hydrogen atom or an unsubstituted or substituted alkyl group, aryl group, alkenyl group, or aromatic heterocyclic group;R.sub.4 through R.sub.7 each represents a hydrogen atom or an unsubstituted or substituted alkyl group, aryl group, or alkenyl group; or R.sub.4 and R.sub.6 together form an unsubstituted or substituted alkylene group or alkenylene group;X.sub.1 represents an oxygen atom, a sulfur atom, or the group ##STR2## wherein R.sub.8 represents a hydrogen atom, an unsubstituted or substituted alkyl group, aryl group, or alkenyl group;Y.sub.

Abstract: A heat-developable photosensitive material which contains a compound of the general formula: ##STR1## wherein F and F' each represents an atomic group necessary for the formation of a 5- or 6-membered rings which may have condensed rings; n represents an integer of 0 or 1; R.sup.1 and R.sup.2 which may be the same or different, each represents a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, or a substituted or unsubstituted alkyl group, cycloalkyl group, alkenyl group, alkynyl group, aryl group, heterocyclic residual group, aralkyl group, alkoxy group, aryloxy group, acylamino group, acyloxy group, acyl group, carbamoyl group, sulfamoyl group, sulfamoylamino group, ureido group, alkylsulfonyl group, arylsulfonyl group, alkylsulfonylamino group, arylsulfonylamino group, alkoxycarbonyl group or alkoxycarbonylamino group, or --CO.sub.2 M; and R.sup.1 and R.sup.2 may be combine and form a ring, M is an alkali metal or H.

Abstract: A heat developable color photographic light-sensitive material comprising a support having thereon at least one layer containing a compound represented by the formula:R--C.tbd.C--M.sub.1/kwherein R represents an unsubstituted or substituted group selected from an alkyl group, cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group and a heterocyclic group; M represents a hydrogen atom or a transition metal atom; and k is an integer of 1 to 3. This heat-developable color photographic light-sensitive material provides a high maximum density and a low fog by heat developing at a relatively low temperature and for a short time.

Abstract: A heat developable color photographic material is disclosed. The color photographic material is comprised of a support having thereon a light-sensitive mixed crystal silver haloiodide having a silver iodide content of 4 to 40 mole %, a binder and a dye-providing substance capable of providing a mobile dye, when the silver haloiodide is reduced to silver by heating, in chemical relation to the reaction. The color photographic material is capable of producing an image by quick development in a substantially water free state. Even when the color photographic material is used in combination with an organic silver salt it is capable of providing excellent color sensitivity.

Abstract: A heat-developable photographic light-sensitive material is described, comprising a support having thereon, at least one layer containing a compound represented by the general formula (I) or (II) below: ##STR1## wherein R and R' each represents a group selected from a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, an amino group, an acylamino group, an alkoxy group, an alkylthio group, a sulfonylamino group, a heterocyclic ring group and a substituted group of them; X represents atoms forming a 5-membered or 6-membered ring; A represents a group causing a decarboxylation reaction.This heat-developable photographic light-sensitive material provides a high maximum density and low fog by heat-developing at a relatively low temperature and for a short time.

Abstract: A heat developable light-sensitive material comprising a support and a heat developable light-sensitive layer formed thereon can produce images of high density and less fog in a short period of time and has excellent aging stability. The light-sensitive material contains as a base precursor at least one compound selected from the group consisting of compounds represented by formula [I]: ##STR1## wherein R.sup.1 and R.sup.2 individually represent hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, aryl, aralkyl, heterocyclic group, or --CO.sub.2 M wherein M represents hydrogen, alkali metal or H.Bx, and R.sup.1 and R.sup.2 can be joined together to form a ring; R.sup.3 represents hydrogen atom, alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, or heterocyclic group; x is equal to 1 when B represents a monoacidic base and equal to 1/2 when B represents a diacidic base; and C* represents an asymmetric carbon atom.

Abstract: A heat developable light-sensitive material is described, comprising a dye represented by formula (I) or (II) as described in claim 1.

Abstract: A heat-developable color photographic material comprising a support having thereon at least a light-sensitive silver halide, a hydrophilic binder, a dye releasing redox compound capable of releasing a hydrophilic dye and a compound represented by the following general formula (IIA): ##STR1## wherein B represents an alkyl group or a substituted alkyl group; m represents 0 or an integer of 1 to 4; and A represents an alkyl group, an aryl group, a cycloalkyl group, an aralkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an acyl group, an alkoxycarbonyl group, an amino group, an N-substituted amino group, an acylamino group, a carbamoyl group, an N-substituted carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsulfonylamino group, an arylsulfonylamino group, a sulfamoyl group, an N-substituted sulfamoyl group, a cyano group, a hydroxy group, a nitro group or a halogen atom and when m represents 2 or more A may be the same or different.

Abstract: Metallic salts of organic charge-transfer agents, such as TCNQ, TNAP, TCNE and DDQ and their derivatives, can be processed by an electron beam for a variety of useful electronic and optical applications. The metallic charge transfer salts can be used to deposit high resolution conductive lines directly without developing solutions or subsequent metallization steps. The compounds can also be employed in the conventional manner as resists for doping (i.e., ion diffusion or implantation) and to diffuse metals into substrates. In particular, electronic devices, optical devices and image-storage devices are disclosed which can be formed by simple electron beam processed of metal charge-transfer salt films deposited on substrates.

Abstract: A heat-developable light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion and an acid precursor having a structural moiety represented by the following formula (I) bonded to carbon atoms: ##STR1## The acid precursor is extremely stable at room temperature but when it is heated above a certain temperature, and the development proceeds to the desired appropriate condition, it releases an acid to neutralize a base, whereby the development is stopped. A heat-developable light-sensitive material containing the acid precursor provides color images having a high S/N ratio and a high image density.

Abstract: A heat-developable light-sensitive material comprising, on a support, a thermally decomposable organic silver salt. The heat-developable light-sensitive materials have high density and low fog.

Abstract: A process for forming an image which comprises heating a light-sensitive material comprising a support having thereon at least a light-sensitive silver halide, a binder and a dye releasing redox compound which is reductive to the light-sensitive silver halide and capable of releasing a hydrophilic dye upon reaction with the light-sensitive silver halide by heating, after imagewise exposure or simultaneously with imagewise exposure, in a substantially water-free condition in the presence of a compound represented by the formula (A): ##STR1## wherein R.sup.1 represents a hydrogen atom or a monovalent or divalent aliphatic group; R.sup.2 and R.sup.3, which may be the same or different from each other, each represents a hydrogen atom, an aliphatic group or an aromatic group; R.sup.1 and R.sup.2 may be taken together to form a heterocyclic ring; R.sup.2 and R.sup.3 may be taken together to form a heterocyclic ring; and n represents 1 or 2, to imagewise form a mobile dye is disclosed.

Abstract: A heat-developable light-sensitive material is described, characterized by containing a polymer having a functional group releasing a basic component upon thermal decomposition in the side chain thereof. This polymer is a new base precursor which when added to heat-developable light-sensitive materials increases their storage stability and permits them to form an image of high density and decreased in fog even after storage. Preferred examples of such polymers are polymers having a repeating unit represented by the general formula (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are each a univalent group, L is a divalent connecting group having from 1 to 20 carbon atoms, M is a cation and x is a number equivalent with the valence of M.

Abstract: A heat developable color photographic light-sensitive material is described, comprising(1) a light-sensitive silver halide,(2) a hydrophilic binder,(3) a dye releasing compound having an ability to reduce exposed light-sensitive silver halide and capable of reacting with the exposed silver halide upon heating, thereby releasing a mobile dye, and(4) a sulfonamide compound represented by the formulaR.sub.0 --SO.sub.2 NH.sub.2wherein R.sub.0 represents an alkyl group, an alkenyl group, an alkynyl group containing at least 4 carbon atoms, an aralkyl group, an aryl group or a heterocyclic ring group, provided that the heterocyclic ring group is linked to --SO.sub.2 NH.sub.2 through a carbon atom contained in the ring thereof.

Abstract: Certain effective leuco dyes for silver halide/silver salt/reducing agent photothermographic color imaging materials tend to bleach in the final image. The presently disclosed system of a syringaldazine and a stabilizing binder resin is more stable.

Abstract: A method for forming an image is disclosed, which comprises heating a light-sensitive material having on a support, a light-sensitive silver halide, a binder and a dye releasing redox compound capable of releasing a dye through the reaction with the silver halide by heating, after or simultaneously with imagewise exposure, in the presence of a compound represented by the formula (A): ##STR1## wherein R is an aliphatic group with a valence of m+n, R.sup.1 is an aliphatic or aromatic group, and m and n are each an integer of 1 to 5. The presence of the compound markedly improves the stability of the light-sensitive material during its storage prior to the heat development.

Abstract: A photographic element of the conventional wet processed type or of the dry silver type which includes an antihalation or acutance dye which absorbs in the near infrared and has a relatively low visible absorption while retaining a high extinction coefficient at .sub.max. The dye is of the general formula: ##STR1## in which: m+p=2,n is 0 or 1,s is 0 or 1,Z.sup.1 and Z.sup.2 independently represent the non-metallic atoms necessary to complete a heterocyclic nucleus of the type present in cyanine dyes,R.sup.1 and R.sup.2 independently represent an alkyl or substituted alkyl, alkenyl, substituted alkenyl or aralkyl group of up to 20 carbon atoms,R.sup.3 and R.sup.4 independently represent a hydrogen atom or an alkyl, substituted alkyl, alkenyl or substituted alkenyl group of up to 10 carbon atoms,R.sup.5, R.sup.6, R.sup.7 and R.sup.

Abstract: A method of forming an image by heat development of a photosensitive material comprising a support having a heat development photosensitive layer comprising imagewise exposing said layer and then bringing a non-water-permeable layer into close contact with said photosensitive layer, and heat developing said material, said photosensitive layer containing(a) an organic acid silver salt;(b) a photosensitive silver halide;(c) a reducing agent; and(d) a binder of at least one of gelatin and a gelatin derivative,said non-water-permeable layer comprising a high molecular compound selected from the group consisting of polyethylene, polypropylene, polystyrene, polyvinyl acetate, polyvinyl butyral, polyvinyl acetal, polyvinyl fluoride, polyvinyl pyrrolidone, polyvinyl chloride, polyacrylic ethyl, polymethacrylic methyl, polymethacrylic ethyl, polyvinylidene chloride, chlorinated polyethylene, chlorinated polypropylene, polycarbonate, polybutadiene, cellulose acetate, cellulose acetate butyrate, cellulose acetate propio

Abstract: The addition of a boric acid or borate ion to a poly(vinyl acetal) composition has been found to cause hardening of the composition. The hardened composition is particularly useful in photothermographic emulsions having a poly(vinyl acetal) layer.

Abstract: A heat-developable color photographic material comprising a support having thereon at least a light-sensitive silver halide, a hydrophilic binder, a dye releasing redox compound and a heat fusible compound which has a melting point of 60.degree. C. or higher and is represented by the following general formula (I), (II) or (III): ##STR1## wherein m represents an integer from 1 to 3; n represents an integer from 1 to 8; q represents an integer from 1 to 4; p represents an integer which meets the requirement for p+g=6; s represents an integer from 1 to 4; r represents an integer which meets the requirement for r+s=8; R represents a hydrogen atom or a substituent as set forth in the specification, and when m, p or r represents 2 or more, R may be the same or different; R.sub.1 represents an organic group in R.sub.1 - (OH).sub.n which is an alcohol, a phenol or a naphthol each having one or more hydroxy group and includes a saccharide; and R.sub.2 represents an organic group in R.sub.

Abstract: An image forming method which comprises (A) exposing to an imagewise pattern of light a light-sensitive material having on a support at least (1) a light-sensitive silver halide, (2) a binder, and (3) a compound which is chemically involved in the reduction of the light-sensitive silver halide to silver under high temperature thereby causing the production or the release of a mobile dye, (B) heating the light-sensitive material in a substantially water-free condition to form the mobile dye with an imagewise distribution subsequently to or simultaneously with the exposure, and (C) transferring the mobile dye into a dye-fixing layer under high temperature and fixing it thereto wherein an acidic component participates chemically in the reaction system for forming the mobile dye after the conclusion of the mobile dye-forming reaction to bring about the desirable effect on lowering the fog density thereof.

Abstract: A silver image and dye image are provided in a photothermographic element comprising a support bearing, in reactive association, (A) a silver compound capable of forming a silver image, and (B) a dye-forming combination comprising (a) a cobalt (III) amine complex capable of releasing ammonia or an amine at processing temperature in the presence of silver and (b) an aromatic 1,2-dialdehyde capable of forming a dye upon reaction with an amine or ammonia. Improvements are provided in such an element by a cyclic imide melt former-silver solvent which is capable of promoting dye formation at processing temperature. A silver image and dye image are formed in such an exposed photothermographic element upon thermal processing. The photothermographic element optionally can comprise a dye image receiver layer.

Abstract: A heat-developable photographic material comprising (a) an organic silver salt, (b) a photocatalyst, (c) a reducing agent, (d) a binder, and (e) at least one compound selected from the compound represented by the general formula (I) described below and the compound represented by the general formula (II) described below. ##STR1## wherein X represents a halogen atom; and R represents a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, an acyl group, a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group, an aralkylsulfonyl group or a heterocyclic residue, ##STR2## wherein X represents a halogen atom; Z represents a sulfur atom, an oxygen atom or >N--R.sub.1 (wherein R.sub.1 represents an alkyl group, an aryl group or an acyl group; (R')n represents a substituent present on the benzene nucleus; and n represents 0 or an integer from 1 to 4.

Abstract: A method of forming an image comprising heating a light-sensitive material having at least a light-sensitive silver halide, a binder and a dye releasing redoc compound which is capable of reducing the light-sensitive silver halide and is capable of reacting with the light-sensitive silver halide by heating to release a hydrophilic dye on a support, under the condition substantially free from water after or simultaneously with imagewise exposure, in the presence of a compound represented by the general formula (A) described below to form imagewise a mobile dye. ##STR1## wherein R represents an alkyl group, a cycloalkyl group, an aryl group or an aralkyl group; R.sup.1 represents an alkyl group, a cycloalkyl group, an aryl group or an aralkyl group; R.sup.2 represents an alkyl group, an aryl group, an aralkyl group, a halogen atom or a group of R.sup.

Abstract: A process for forming an image is described, comprising heating a light-sensitive material in a substantially water-free condition to form a mobile dye in an image pattern, said material having a support bearing thereon light-sensitive silver halide, a binder, and a dye-releasing redox compound capable of imagewise reducing the silver halide and releasing a hydrophilic dye on reaction with said silver halide when heated, after or simultaneously with imagewise exposure, in the presence of a compound having a melting point below 60.degree. C.

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 heat-developable light-sensitive material is described, which contains fine particles of a substantially water-insoluble base precursor incorporated in a binder. This light-sensitive material is superior in stability with the passage of time and the changes on the photographic characteristics such as maximum density, minimum density and sensitivity are less during the storage thereof.

Abstract: A heat developable color light-sensitive material is disclosed. The material is comprised of a support base having thereon a light-sensitive silver halide, a binder, a dye-releasing material and a base precursor. The dye-releasing material is reductive to the light-sensitive silver halide and releases hydrophilic dye by causing a reaction with the light-sensitive silver halide by heating. The base precursor is a compound represented by the general formulae (A) and/or (B): ##STR1## wherein the substituents are defined within the specification. The material is capable of forming images by heating in a substantially water free state in order to provide high-density color images in a short period of time. The images formed have a decreased amount of fogging and higher density as compared with conventional materials. Further, the disclosed material has excellent stability when stored.

Abstract: A heat-developable color photographic material is disclosed. The material is comprised of a support base, a binder, a light-sensitive silver halide, a dye releasing redox compound which reduces the light-sensitive silver halide and releases a hydrophilic dye by reacting with the light-sensitive silver halide by heating; and a base precursor. The base precursor is represented by the general formula: ##STR1## wherein the substituents are defined within the specification. The material is capable of forming dye images with high density by heating the material after exposure in a substantially water free state. The images can be obtained in a short period of time and maintain their color density during storage. Further, the material produces a relatively low degree of fog based on the high degree of image density obtained.

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 heat-developable color photographic material is disclosed. The material is comprised of a support having thereon at least a light-sensitive silver halide, a hydrophilic binder, a dye releasing compound reductive and capable of releasing a hydrophilic dye and a compound represented by the following general formula (A): ##STR1## wherein A.sub.1, A.sub.2, A.sub.3, and A.sub.4, which may be the same or different, each represents a hydrogen atom or a substituent selected from an alkyl group, a substituted alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a substituted aryl group and a heterocyclic group, or A.sub.1 and A.sub.2 or A.sub.3 and A.sub.4 may combine with each other to form a ring.The heat-developable color photographic material can easily provide in a short time a clear and stable color image having a high color density and low fog by imagewise exposure and heat development procedure.

Abstract: A coupler containing in the coupling position a carbamoyloxy group ##STR1## upon oxidative coupling, releases a carbamic acid fragment that, in turn, is capable of thermally releasing ammonia or an amine. Such a carbamoyloxy substituted coupler and carbamic acid fragment are useful in imaging such as in photothermography and thermography. Ammonia or an amine released from the carbamic acid fragment enables imaging in imaging materials that are responsive to ammonia or an amine. The carbamoyloxy substituted coupler also generally is a dye-forming coupler that reacts with the oxidized form of a color developing agent to form a dye. An image is produced in an exposed photothermographic material comprising the carbamoyloxy substituted coupler by thermal development. An image is produced in a thermographic material comprising the carbamoyloxy substituted coupler and a color developing agent by imagewise heating the thermographic material.

Abstract: An improved reflective silver laser recording and data storage medium for direct read after writing, having a protective gold plating on the silver particles of the reflective surface. The gold plating increases the recording sensitivity resulting in higher contrast ratios for the recorded data. Increased contrast ratios between recorded and non-recorded reflective areas are obtained by the gold plating allowing lower laser energy for readout of recorded data. The reflective silver surface is plated with gold by an electroless ion displacement procedure.

Abstract: A narrow range of dinuclear spectral sensitizing dyes can be used in photothermographic silver halide emulsions without adversely affecting fog and speed levels with concentration variations.

Abstract: Imaging compositions employing a tellurium compound, a reductant precursor, a masked reducing agent and a source of labile hydrogen are improved by the inclusion of a base which may be inorganic or organic. Suitable inorganic bases include alkali metal hydroxides, alkaline earth metal hydroxides and ammonium hydroxide. Suitable organic bases include amines and heterocyclic nitrogen atom containing compounds.

Abstract: The addition of a class of compounds to a photothermographic emulsion reduces latent image fade.

Abstract: A heat erasable photographic material comprises, in reactive association, in a suitable binder:(a) photographic silver halide;(b) a mild oxidizing agent which consists essentially of a cobalt(III) amine salt which, upon heating of the photographic material, will oxidize any latent image silver present in the photographic material; and(c) a weak complexing agent for the oxidized silver.Any latent image silver in the photographic material is erased upon brief uniform heating of the photographic material. The photographic material is light handleable prior to uniform heating. After uniform heating, the photographic material is capable of being imagewise exposed and processed to produce a developed silver image. The photographic material may comprise a selected silver halide developing agent.

Abstract: In a photothermographic silver halide material and process for preparing an enhanced silver image, an aminosulfonylhydrazone that is capable of developing an image in the photothermographic material and that is capable, upon oxidation, of releasing an aminosulfinic acid, which, in turn, thermally releases ammonia or amine provides a silver image in the photothermographic material and provides ammonia or amine for activation of an ammonia or amine responsive imaging material. After imagewise exposure of the photothermographic material, a silver image enhanced by an image in the ammonia or amine responsive imaging material is produced by heating the photothermographic material.

Abstract: Stabilizer precursors which comprise triarylphosphines and triarylphosphoranes and which, upon being heated to a temperature above about 100.degree. C., release a phosphorous compound silver halide stabilizer that is useful in a heat stabilizable photographic silver halide material comprising photographic silver halide. A stabilized image is produced in the photographic material following exposure and development by heating the material to processing temperature. The triarylphosphines and triarylphosphoranes are useful in a dry physical development photographic material and process. Alternatively, the triarylphosphines and triarylphosphoranes are useful in a dry chemical photographic material and process.

Abstract: Photothermographic imaging elements are provided with strippable layers which have electrical conductivity in the range of 60 to 1,500 ohms/square. The elements may be exposed to radiation and then thermally developed by applying a voltage across the strippable layer which becomes resistively heated. After development, the strippable layer may be removed.

Abstract: A method for storing sheets of a photothermographic sheet material composed of a high molecular weight compound support and a sensitive emulsion comprising, as the indispendable constituents, an organic silver salt oxidizing agent, a reducing agent for silver ion, a photosensitive silver salt compound or its precursor, and a binder, characterized by inserting paper having smooth surfaces between every two sheets of said photothermographic sheet material. By this method, the photothermographic sheet material can be stored for a long period of time without deterioration of quality.

Abstract: A photothermographic emulsion can be provided with enhanced image density by using an indoaniline leuco dye, aromatic carboxylic acid, and p-alkylphenyl sulfonic acid in reactive association with the emulsion.

Abstract: A self-exposing imaging element is disclosed comprising a support member, a light sensitive layer, and a layer containing reagents which will chemically react in a chemiluminescent reaction to produce light which exposes the light sensitive layer when in contact with an original. Reagents in the light generating layer are physically or chemically segregated prior to exposure to prevent reaction, for example, by encapsulation of one of the reactants, the reaction solvent, or a catalyst. To copy the self-exposing imaging element is placed in contact with an original, the light generating layer is activated by causing the reactants to mix or introducing the reaction solvent or catalyst and the radiant energy generated produces an image of the original in the radiation sensitive layer by reflex imaging or direct transmission imaging.

Abstract: Photothermographic emulsions may be stabilized against latent image fade and/or may have their speed increased by the addition of diazepines and fused aromatic diazepines.

Abstract: A photosensitive material in the form of a silver and chlorine-containing polyphosphate which exhibits permanent visible darkening on exposure to ultraviolet or short wavelength visible light, is described.

Abstract: The addition of certain classes of aromatic nitrogen containing compounds to photothermographic emulsions stabilizes the background density of the imaged film and/or increases the speed of the emulsion.

Abstract: A method and apparatus for forming an image using an image forming sheet that is normally non-photosensitive but can be rendered photosensitive by preheating and is exposed at the preheated area to a light image to form therein a latent image and then heat-developed to form a visible image. After preheating, the preheated area is cooled by cooling means prior to exposure.

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 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: 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.