Abstract: A method for printing on an exposed polymerised thermoplastic or curable layer of the body of a portable data medium, and a portable data medium particularly a chip card, comprising a polymerised layer, are disclosed. The method comprises the steps of mixing a polymerisable thermoplastic or curable binder and at least one light-sensitive compound responsive to laser radiation having a predetermined wavelength in such a way that it changes from a first state to a second coloured state, in order to form a mixture, exposing the mixture to the laser radiation having a predetermined wavelength; and polymerising the mixture to form the polymerised layer of the body of the data medium. The method is particularly suitable for printing on smart cards.

Abstract: An image recording medium is disclosed which comprising: an acid generating agent capable of generating an acid by the action of heat or an acid, which is represented by the following formula (1); and a compound of causing variation in the absorption region of from 360 to 900 nm by the intramolecular or intermolecular reaction triggered by the action of an acid:W.sup.1 OP (1)wherein W.sup.1 represents a residue of an acid represented by W.sup.1 OH, and P represents an acid-sensitive substituent capable of splitting off at a temperature of 150.degree. C. or less due to catalysis by W.sup.1 OH.

Abstract: The invention relates to a process for the production of a colored image for color proofing of copy masters for multicolor printing and a layer material for carrying out this process.A positive image of the exposure mask (color separation film) is produced by lamination of a photosensitive material onto a colored layer material, followed by imagewise exposure and peeling-off of a film support, or a negative image of the exposure mask is obtained by imagewise exposure of the photosensitive material before the lamination, accompanied by flood exposure after lamination followed by peeling-off of a film support. The two procedures use the same materials and do not require wet development. For each single-color image, only one lamination step is required.

Abstract: Compositions for making structured color images comprising(a) a soluble pigment precursor which can be transformed to an insoluble pigment by means of chemical, thermal, photolytic or radiation-induced method, and(b) a binder polymer or prepolymer, or a positive or negative resist-type resin which can be structured by crosslinking, polymerization or depolymerization by applying heat or electromagnetic irradiation.The compositions can be applied to optical and thermal recording, printing, and the production of color filters for Liquid Crystal Displays, with high accuracy, high transparency and high stability.

Abstract: A photosensitive resin composition comprising (A) a binder polymer and/or a prepolymer; (B) an ethylenically unsaturated compound; (C) a radical producer capable of producing a free radical upon exposure to an ultraviolet ray of 300 to 400 nm; and (D) an anthraquinone dye capable of exhibiting a color change upon exposure to an ultraviolet ray having a wavelength in the range of 300 to 400 nm in the presence of the radical producer (C). This photosensitive resin composition, upon exposure through a negative mask to an ultraviolet ray of a wavelength in a specific range and of a quantity larger than a threshold value, can form a photoresin product having image and non-image portions which are different in color from each other, and, hence, this composition can advantageously be used in the fields of printing plates and resists.

Abstract: Transparent molded articles having a high-contrast laser inscription thereon are produced from a polymer mixture consisting ofA) from 40 to 99% by weight of a polymer of an alkyl ester of (meth)acrylic acid,B) from 1 to 50% by weight of a copolymer of styrene and acrylonitrile having an acrylonitrile content of from 8 to 30% by weight,C) from 0 to 50% by weight of rubber particles, andD) from 0 to 20% by weight of additives and processing auxiliaries, by preparing a transparent molded article from the polymer mixture, and exposing the transparent molded article to laser radiation.

Abstract: Artwork is imparted to plastic discs such as CDs, CD ROMs, and DVDs (digital video discs) by exposing a layer of photoresist material on a substrate to light from an original image of the artwork. The material of the photoresist layer is exposed to different depths by different intensity light from different image regions. Where the image is dark, the exposure is to relatively shallow, random depths. Where the image is light, the full thickness of the photoresist layer is exposed. Development of the photoresist layer removes the exposed photoresist material. The surface features of the developed photoresist layer and any uncovered substrate are transferred to a member used in forming a surface of the plastic disc, thereby visibly embossing the image in the disc.

Abstract: A method of producing a three-dimensional object having selected elements which are colored differently than other elements of the object comprising the steps of:(a) providing a film of a photohardenable composition containing a photoresponsive agent,(b) radiating the film in a cross-sectional pattern of the object to be formed,(c) selectively irradiating one or more portions of the cross-sectional pattern corresponding to the selected elements which are desired to be colored differently with radiation which activates the photoresponsive agent, the photoresponsive agent thereby producing color in or removing color from the selected irradiated portions of the cross-sectional pattern,(d) repeating steps a, b, and c to form successive adjacent cross-sectional pattern of the object, and(e) integrating the cross-sectional patterns together to provide the three-dimensional object, wherein the curing and coloring steps are conducted using actinic radiation.

Abstract: Compositions for making structured color images comprising (a) a soluble pigment precursor which can be transformed to an insoluble pigment by means of chemical, thermal, photolytic or radiation-induced method, and (b) a binder polymer or prepolymer, or a positive or negative resist-type resin which can be structured by crosslinking, polymerization or depolymerization by applying heat or electromagnetic irradiation. The compositions can be applied to optical and thermal recording, printing, and the production of color filters for Liquid Crystal Displays, with high accuracy, high transparency and high stability.

Abstract: There is disclosed a color developing resin composition comprising a base polymer, a dialdehyde represented by the general formula OHC--R.sup.1' --CHO, a diamine represented by the general formula H.sub.2 N--R.sup.2' --NH.sub.2 (at least one of R.sup.1' and R.sup.2' is an aromatic group), a compound which produces an acid by light irradiating and a resin which is crosslinked with the acid.

Abstract: A pigment-dispersed photoresist composition for a color filter of liquid crystal display, which comprises a photosensitive resin composition comprising a binder resin, a multifunctional acrylate monomer or oligomer, a polyene compound containing at least unsaturated group the main chain of which may be substituted with esters or urethanes, a multifunctional thiol compound, a photopolymerization initiator, a sensitizer, a soft polymerization inhibitor and an organic solvent, and a pigment-dispersed composition comprising pigment, a polymeric dispersing agent and/or a pigment-derived dispersing agent in combination with a surfactant a leveling agent, a slip agent, an antifoaming agent and an organic solvent, is disclosed.

Abstract: A process for preparing an image on a substrate by applying a photoimageable composition on a first substrate, wherein the photoimageable composition, having a solids content from 25 to 60 weight percent, contains a partially neutralized acid-containing polymer formed from a precursor polymer having an acid number from 90 to 160 prior to neutralization and wherein 1 to 15% of acid-containing groups of the precursor polymer are neutralized with base; an ethylenically unsaturated monomer; a photoinitiator or photoinitiating system, water; 0-5% by weight a solution polymer, based on the weight of total polymer present in the composition; and 0-25% by weight of an organic solvent based on the total weight of the organic solvent and water; wherein the liquid composition is present as a stable emulsion, and wherein the liquid composition has a Brookfield viscosity, at 25.degree. C.

Abstract: A photosensitive colored material mainly composed of an aromatic polyamide or polyimide resin having a photosensitive group in its molecule, a coloring matter, and a solvent, wherein; said solvent comprises a first solvent component capable of independently dissolving said resin alone and a second solvent component having a smaller surface tension than said first solvent component and incapable of independently solving said resin; and the content of said first solvent component is larger than the content of said second solvent component.

Abstract: A photosensitive colored material mainly composed of an aromatic polyamide or polyimide resin having a photosensitive group in its molecule, a coloring matter, and a solvent, wherein; said solvent comprises a first solvent component capable of independently dissolving said resin alone and a second solvent component having a smaller surface tension than said first solvent component and incapable of independently solving said resin; and the content of said first solvent component is larger than the content of said second solvent component.

Abstract: A dye-donor or recording element comprising a support having thereon a dye layer comprising a yellow dye in a polymeric binder, the dye having the formula: ##STR1## wherein: R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently represents hydrogen, halogen, hydroxy, nitro, a substituted or unsubstituted alkyl or alkoxy group of from 1 to about 6 carbon atoms, a substituted or unsubstituted phenyl group, an alkylazo group, or an arylazo group;or any two adjacent R.sup.1, R.sup.2, R.sup.3 and R.sup.4 groups may be taken together with the phenyl ring to which they are attached to form a fused ring system; andZ.sup.1 and Z.sup.2 each independently represents hydrogen or a moiety having a Hammet Sigma (meta) Constant greater than 0.3, such as cyano, esterified carboxy, amide, benzoxazole, alkylsulfonyl, arylsulfonyl; or may be taken together to form a group having a Hammer Sigma (meta) Constant greater than 0.3.

Abstract: Monochrome and polychrome color proofs, for the graphic arts industry, having an image carrier containing two layers A and B to control optical dot growth are described. Layer A contains at least one polyolefin and, in a preferred embodiment, a light-reflecting white pigment. Layer B contains at least one binder, at least one light-reflecting white pigment at between 50% and 90% by weight relative to Layer B, and at least one light-absorbing pigment. A process and a means for preparing such monochrome and polychrome color proofs are described.

Abstract: A positive-working light-sensitive composition which comprises:(a) 0.5 to 80% by weight of a compound which has at least one group capable of being decomposed by an acid and whose solubility in an alkaline developer is increased by an acid;(b) 0.01 to 20% by weight of a disulfone compound represented by the following formula (I);R.sup.1 --SO.sub.2 --SO.sub.2 --R.sup.2 (I)wherein R.sup.1 and R.sup.2 may be the same or different and represent a substituted or unsubstituted alkyl, alkenyl or aryl group; and(c) 5 to 99.49% by weight of a resin insoluble in water and soluble in an alkaline water,wherein the compound of the component (a) has a molecular weight of not more than 2,000 and a boiling point of not less than 150.degree. C. and wherein a film of the composition having a thickness of 1 .mu.m has an optical density determined at 248 nm of not more than 1.4 before exposure to light and the optical density of the composition determined at 248 nm is reduced by exposure to light of 248 nm.

Abstract: A method for producing a three-dimensional object having selected elements which are colored differently than other elements of the object comprising the steps of: (a) providing a film of a photohardenable composition containing a photoresponsive agent; (b) irradiating the film in a cross-sectional pattern of the object to be formed; (c) selectively irradiating one or more portions of the cross-sectional pattern corresponding to the selected elements which are desired to be colored differently with radiation which activates the photoresponsive agent, the photoresponsive agent thereby producing color in or removing color from the selected irradiated portions of the cross-sectional pattern; (d) repeating the steps a, b and c to form successive adjacent cross-sectional patterns of the object; and (e) integrating the cross-sectional patterns together to provide the object.

Abstract: A process for preparing embossed, finely-divided, thin, bright-metal particles which process comprises forming an embossed release surface to at least one side of a carrier sheet, depositing a metal film onto the release surface so that the metal film conforms to the embossed surface, solubilizing the release surface, removing the metal film from the carrier sheet, and breaking the thin metal film into embossed particles having an average diameter of between 25 to 50 microns. The film may also take the form of an optical stack.

Abstract: Positive-acting no-process printing plates are disclosed in which a stable visual or print-out image is obtained upon exposure of the plate to actinic radiation. The visual image is obtained by incorporation into the photosensitive layer, a dye which is irreversibly bleached upon exposure of the printing plate. For example, an acid which is generated upon exposure of a photopolymer to radiation may be used to bleach a dye of this invention. The visual or print-out images produced are useful in the production cycle and are stable to basic environments that may be encountered in the production setting.

Abstract: Described is a photosensitive material for producing metal-colored images, comprisingA) a flexible transparent plastic support film,B) a photosensitive layer comprising a polymeric binder, a photosensitive substance and a pearl luster pigment, and optionallyC) a thermoplastic adhesion-promoting layer.The material of the invention makes it possible to produce color-proofing images for metal-colored multicolor prints by combining metal-colored single-color images with single-color images in the usual primary colors as desired.

Abstract: Monochrome and polychrome color proofs, for the graphic arts industry, having an image carrier containing two layers A and B to control optical dot growth are described. Layer A contains at least one polyolefin and, in a preferred embodiment, a light-reflecting white pigment. Layer B contains at least one binder, at least one light-reflecting white pigment at between 50% and 90% by weight relative to Layer B, and at least one light-absorbing pigment. A process and a means for preparing such monochrome and polychrome color proofs are described.

Abstract: A process of forming a single color image comprising:a) imagewise exposing, by means of a laser, a dye-ablative recording element comprising a support having thereon, in order, a hydrophilic dye-receiving layer, a hydrophobic dye-barrier layer, and a hydrophilic, water-soluble, infrared-absorbing layer which absorbs at a given wavelength of the laser used to expose the element, thereby imagewise heating the infrared-absorbing layer and the dye-barrier layer, causing them to ablate;b) removing the ablated infrared-absorbing layer and dye-barrier layer material;c) contacting the imagewise-exposed element with an aqueous ink solution and thereby removing the remaining infrared-absorbing layer; andd) drying the element to obtain a single color image in the ablative recording element.

Abstract: A process of forming a single color image comprising:a) imagewise exposing, by means of a laser, a dye-ablative recording element comprising a support having thereon, in order, a hydrophilic dye-receiving layer and a hydrophobic dye-barrier layer, at least one of the dye-receiving layer and the dye-barrier layer having an infrared-absorbing material therein or in a layer therebetween to absorb at a given wavelength of the laser used to expose the element, thereby imagewise heating the dye-barrier layer and causing it to ablate;b) removing the ablated dye-barrier layer material;c) contacting the imagewise-exposed element with an aqueous ink solution; andd) drying the element to obtain a single color image in the ablative recording element.

Abstract: This invention makes available processes for preparing images, especially color proofs. A layer with imagewise tacky and nontacky areas is toned. Toner adhering to the tacky areas is transferred first onto a temporary support and from there onto an image receptor.

Abstract: A photosensitive element comprising, in order a support; a photosensitive layer comprising a photosensitive composition; and a layer comprising a thermally sensitive material; wherein the thermally sensitive material is (a) incompatible with the photosensitive composition, (b) non-tacky and non-blocking at room temperature, and (c) tackifiable at 70.degree. C. to 120.degree. C. and a process for using these elements is described. The photosensitive element may be in sheet or roll form.

Abstract: The invention relates to a method of transferring an image of a master pattern by an intermediate carrier being a laser copy of the master pattern onto a carrier, for example a plate of metal. The surface of the carrier is provided on one side with a layer of a couch or with a layer of a lacquer or with a layer of a thermoplastic or elastomeric material or with a powder coating which is dried at an increased temperature. The material forming the image penetrates under the action of heat and pressure into the layer or the powder coating thus softened which is subsequently after-baked. A weather-resistant and scratch-resistant copy of the master pattern is provided.

Abstract: A process for forming a colored image comprising, in order:(A) imagewise exposing to actinic radiation a photosensitive element comprising a carrier support, a carrier surface, a first adhesive layer and a first photosensitive layer,(B) developing the exposed first photosensitive layer,(C) laminating to the element a transfer element comprising a transfer support, and a transfer surface layer which is adjacent to a colored pattern in the element of step (A) with the proviso that the transfer element does not have an adhesive layer which transfers to the colored pattern,(D) removing said carrier support and said carrier surface, revealing said first adhesive layer,(E) laminating the element the element from step (D) to a permanent support wherein the first adhesive layer is adjacent to the permanent support; and(F) removing said transfer support and said transfer surface layer.

Abstract: A tonable, aqueous-processable, photosensitive element and process for forming a colored image from said element is described. The element comprises a support and a tonable, aqueous-processable photosensitive layer, said photosensitive layer consisting essentially of (a) an aqueous-processable, photoinsolubilizable photosensitive composition comprising a photosensitive material, and (b) a water-soluble plasticizer, wherein said photosensitive material is present in sufficient amount to insolubilize said photosensitive layer on exposure to actinic radiation, said photosensitive composition is present in sufficient amount to form a layer when said photosensitive layer is coated, and said plasticizer is present in sufficient amount to make said photosensitive layer.

Abstract: A photosensitive material comprising (A) a flexible transparent film support, (B) a colored photosensitive layer which contains an organic binder (B1) a dye or a colored pigment (B2), a compound (B3), which forms a strong acid on exposure to radiation, and a compound (B4) which has at least one group cleavable by the acid, and (C) an adhesion-promoting layer which contains a thermoplastic polymer which has a softening temperature in the range from 40.degree. to 200.degree. C., wherein the adhesion (a.sub.1) of the unexposed photosensitive layer (B) to the adhesion-promoting layer (C) is less than the adhesion (a.sub.3) of the unexposed photosensitive layer (B) to the film support (A) and than the cohesions of the layers (B) and (C), and the adhesion (a.sub.3 ') of the exposed photosensitive layer (B) to the film support (A) is less than the adhesion (a.sub.

Abstract: A photosensitive material comprising (A) a flexible transparent film support, (B) a colored photosensitive layer which contains an organic binder (B1) a dye or a colored pigment (B2), a compound (B3), which forms a strong acid on exposure to radiation, and a compound (B4) which has at least one group cleavable by the acid, and (C) an adhesion-promoting layer which contains a thermoplastic polymer which has a softening temperature in the range from 40.degree. to 200.degree. C., wherein the adhesion (a.sub.1) of the unexposed photosensitive layer (B) to the adhesion-promoting layer (C) is less than the adhesion (a.sub.3) of the unexposed photosensitive layer (B) to the film support (A) and than the cohesions of the layers (B) and (C), and the adhesion (a.sub.3 ') of the exposed photosensitive layer (B) to the film support (A) is less than the adhesion (a.sub.

Abstract: A method for producing a three-dimensional object having selected elements which are colored a different color than the color of other elements of the object, comprising the steps of:a. providing a film of a photohardenable composition containing a photoresponsive agent,b. irradiating the film in a cross-sectional pattern of the object to be formed so as to form hardened areas in the film.c. selectively irradiating one or more portions of the cross-sectional pattern corresponding to the selected elements which are desired to be colored a different color than the color of other elements of the object with radiation which activates the photoresponsive agent, the photoresponsive agent thereby producing color in or removing color from the selectively irradiated portions of the cross-sectional pattern, the steps being performed with radiation of a different wavelength than the radiation used in performing step b,d. repeating steps a, b and c to form successive adjacent cross-sectional patterns of the object, ande.

Abstract: A light-shielding light-sensitive resin composition containing at least (1) an alkali soluble binder, (2) a photopolymerization initiator, (3) an addition-polymerizable monomer having an ethylenically unsaturated double bond, and (4) at least two coloring agents, wherein the light-shielding light-sensitive resin composition is characterized in that said resin composition is equivalent or close to a black color in terms of hue and, when formed into a light-shielding light-sensitive resin layer having a layer thickness of 1 to 3 micrometers, has a transmittability in a visible ray region of 2 or less and a ratio of the transmittability in the visible region to the transmittability in the UV region of 1:1 to 20:1.

Abstract: A photosensitive mixture useful for producing relief and printing plates consists essentially of(a) at least one block copolymer of styrene, butadiene and/or isoprene,(b) at least one photopolymerizable olefinically at least monounsaturated organic compound,(c) at least one photoinitiator, and(d) at least one azo dye.

Abstract: Photographic images may be produced on a backing such as paper and polyester sheets, from photographic negatives which encompass line rendering, design comps, copy, complex color separation or the like with water-based varnishes and pigments, the resulting images closely resembling, if not exactly, the same image in its commercially printed form. Thus all aspects of color proofs produced by this invention provide greatly improved predictability as to the appearance of the final printed job, with a further improvement of cost savings over conventional techniques of preparing color proofs. Also, said proofing method can be used to provide a "transfer" so that one may transfer the colored image or images to a more suitable or required backing.

Abstract: An image formation process uses two light-sensitive elements comprising first and second adhesive light-sensitive layers which become nonadhesive upon exposure to light, respectively, and first and second toner elements comprising toner layers (a') and (b') of hues (a) and (b), respectively.

Abstract: A dye-ablative recording element comprising a support having thereon an interlayer containing an inorganic hydrate salt, the interlayer being overcoated with a dye layer comprising an image dye dispersed in a polymeric binder, and the dye layer having an infrared-absorbing material associated therewith.

Abstract: An image formation process uses two light-sensitive elements comprising first and second adhesive light-sensitive layers which become nonadhesive upon exposure to light, respectively, and first and second toner elements comprising toner layers (a') and (b') of hues (a) and (b), respectively.

Abstract: This invention provides novel ethylenically unsaturated urethane monomers and photoreactive compositions comprising such monomers as essential constituents. The monomers can be photopolymerized or photocrosslinked and are useful in coating systems and multilayer color proofing systems. Additionally, they offer superior advantages such as significantly reduced migration between layers in multilayer color proofing systems.

Abstract: A process for preparing images on tonable, light-sensitive layers using a transfer material comprising (a) a support, (b) a transfer layer containing in its binder a finely divided powder or a finely divided powder and a dissolved dye, and (c) a cover layer containing a binder and/or discrete, inert particles is described. Such transfer materials can be used to make color proof prints having high resolution, reproducible color density, low dot growth, and no troublesome background fog.

Abstract: A shadow mask includes a mask substrate having vertical and horizontal axes passing through a center of the substrate, and a number of substantially rectangular apertures. The apertures are arranged so that a plurality of vertical trains of apertures extending parallel to the vertical axis are arranged at predetermined intervals in the direction of the horizontal axis. Each of the apertures other than the apertures located on the vertical axis has a pair of outer corners distant from the vertical axis, a pair of inner corners less distant from the vertical-axis side, and a pair of bulging portions extending from the outer corners, respectively, outward in the horizontal direction. The farther each of the apertures is located from the vertical axis, the longer the bulging portions extend outward.

Abstract: A tonable, aqueous-processable, photosensitive element and process for forming a colored image from said element is described. The element comprises a support and a tonable, aqueous-processable photosensitive layer, said photosensitive layer consisting essentially of (a) an aqueous-processable, photoinsolubilizable photosensitive composition comprising a photosensitive material, and (b) a water-soluble plasticizer, wherein said photosensitive material is present in sufficient amount to insolubilize said photosensitive layer on exposure to actinic radiation, said photosensitive composition is present in sufficient amount to form a layer when said photosensitive layer is coated, and said plasticizer is present in sufficient amount to make said photosensitive layer.

Abstract: A photochemical method of making a tactile design comprises the steps of exposing to light a selected portion of photo-sensitive layer-supported by a substrate; applying a decorative coating to the photo-sensitive layer; applying a photo-sensitive emulsion over the decorative coating; exposing to light the same selected portion of the photo-sensitive emulsion; and removing the photo-sensitive emulsion, the decorative coating, and the photo-sensitive layer from the non-selected portions. The tactile design comprises a layer of photo-sensitive material fixedly attached to a selected portion of a substrate wherein the layer has been exposed to light and the layer projects away from the surface of the substrate a sufficient distance to be sensitive to the touch. At least one decorative coating is fixedly attached to the photo-sensitive layer.

Abstract: An imaging element is disclosed comprising on a support a dye precursor and a color developer arranged in the same layer or in separate layers characterized in that a specific type of monomers according to one of formulas (I) or (II) and a photoinitiator is present in a layer containing said dye precursor and/or color developer. The imaging element of the invention can used as photosensitive as well as heat-sensitive imaging element for obtaining an image.

Abstract: An image forming method is conducted by subjecting a dry silver salt image forming medium to imagewise exposure and heating to form a light-absorbing organic compound. Thereafter, the medium is subjected to polymerization exposure to imagewise polymerize the medium based on the formation pattern of the light-absorbing compound. The light-absorbing organic compound has specific sensitivities to light in order to maximize contrast.

Abstract: A process for preparing images on a tonable, light-sensitive layer using a transfer layer containing at least 20 percent by weight of a toner and a polymer with a maximum tensile strength of at least 2 N/mm.sup.2 as a binder. The pigmented transfer layers can be used in color proofing processes requiring high resolution, reproducible color density and low dot gain.

Abstract: A resin composition suitable for marking with a laser and a method for laser marking said resin are provided. The resin composition comprises a thermoplastic resin, one or more compounds selected from the group consisting essentially of (i) tetrazole compounds, and (ii) sulfonylhydrazide, nitroso and azo compounds having a decomposition temperature of at least 210.degree. C., and carbon black.

Abstract: The present invention provides a recording material utilizing a reaction between a colorless or light-colored dye precursor and a color developer capable of forming a color upon coming into contact with the dye precursor, the recording material being characterized in that the material comprises at least one compound serving as the dye precursor and represented by the formula (1), and an acidic substance serving as the color developer ##STR1## wherein R.sub.1 to R.sub.6, p and q are defined in the specification. At least one selected from the group consisting of phenolic compounds of the formulae (10), (11) and (12) and phenolic resin having a partial structure of the formula (13) can be used, as required, to further improve the color forming properties and change the color of recorded images from reddish purple or purple to blue or dark blue.

Abstract: Disclosed is a photosensitive resin composition for use in a light-shielding film, comprising a photosensitive resin and a light-shielding coloring material, wherein light transmission properties after formation of the light-shielding film are controlled by the light-shielding coloring material so that (i) the light transmission through the light-shielding film is 1% or more in at least one wavelength of a light wavelength region of from 330 nm to less than 425 nm, and (ii) the light transmission through the light-shielding film is 2% or less in a light wavelength region of from 425 to 650 nm.

Abstract: An X-Ray sensitive composition including one or several photopolymerizable monomer or photocrosslinkable polymer systems and thermochromic substances which can be used in a dry X-Ray reproduction process. The process is based on the different dielectric constants and dielectric losses exhibited by a monomer and the corresponding polymer or a polymer and the crosslinked polymer and the reaction of certain thermochromic substances which exhibits a specific threshold temperature above which these substances change from a colorless form to a color stable form. The X-Ray sensitive element is exposed according to a pattern of X-Ray with spatial modulation providing an X-Ray image to form a latent image of polymerized or crosslinked zones and unpolymerized or non crosslinked zones.