Abstract: A process of forming a protective laminate to a laser-ablative recording element comprising a support having thereon an image layer comprising a colorant dispersed in a polymeric binder, the colorant layer having an infrared-absorbing material associated therewith, wherein the element is subjected to a corona discharge treatment prior to application of the protective laminate.

Abstract: The present invention is directed to an image plate comprised of a stiffening layer formed from a first photocured polymeric material and a print contact layer formed from a second photocured polymeric material wherein the first photocured polymeric material is a hard photocured polymeric material and the second photocured polymeric material is formed from a soft photocured polymeric material. The image plate is assembled as a photocured pre-cut sheet of relief images comprising a first layer formed from a releasable substrate, a second layer formed from a first photocured polymer, and a third layer formed from a second photocured polymer, wherein the first photocured polymer is formed from a hard photopolymer resin and the second photocured polymer is formed from a soft photopolymer resin.

Abstract: The invention discloses that a photograph with a 3-dimensional image results when the non-angular reflector (of mercury) used in the Lippmann process of color photography is replaced by an angular reflector; the preferred form of the angular reflector is a retro-reflector.A photographic system is described which produces photographs with 3-dimensional images. The photo-sensitive element records the interference patterns of light waves, and the system is an improvement over the Lippmann process of color photography which produces photographs with 2-dimensional images. A photographic system is also described that produces a photograph with a 3-dimensional image from 2-dimensional cross sections of a subject; the system is useful in medical imaging. During exposure, motion of more than one wavelength of light is permissible between the subject and lens or the lens and the photo-sensitive element.These improvements result from the use of a particular type of angular reflector which is a retro-reflecting sheet.

Abstract: The invention discloses that a photograph with a 3-dimensional image results when the non-angular reflector (of mercury) used in the Lippmann process of color photography is replaced by an angular reflector; the preferred form of the angular reflector is a retro-reflector.A photographic system is described which produces photographs with 3-dimensional images. The photo-sensitive element records the interference patterns of light waves, and the system is an improvement over the Lippmann process of color photography which produces photographs with 2-dimensional images. A photographic system is also described that produces a photograph with a 3-dimensional image from 2-dimensional cross sections of a subject; the system is useful in medical imaging. During exposure, motion of more than one wavelength of light is permissible between the subject and lens or the lens and the photo-sensitive element.These improvements result from the use of a particular type of angular reflector which is a retro-reflecting sheet.

Abstract: A spot gloss film element for color systems which provides a glossy sheen to image-bearing receiver sheets in areas which were exposed to actinic radiation, while the unexposed areas remain partially or completely matte. The film element comprises, sequentially, a strippable, transparent cover sheet; a crosslinked phenolic layer; a gloss layer, which comprises an organic binder, a polymerizable component, a particulate material, and an optional photoinitiator; a photoadhering layer, which comprises a polymerizable component, a binder, and an optional photoinitiator; and a thermoplastic adhesive layer. The spot gloss film is laminated to an image bearing receiver sheet. The gloss layer and the photoadhering layer are exposed to actinic radiation through the transparent cover sheet and crosslinked phenolic layer.

Abstract: A photosensitive resin composition comprising the following components (A), (B), (C) and (D): (A) a photopolymerizable urethane (meth)acrylate compound containing at least two acryloyl or methacryloyl groups, (B) an alkali-soluble polymer compound having an acid value of from 50 to 250 mgKOH/g, and (C) a photopolymerization initiator, (D) a polymeric complex of an alkali thioxanate wherein the photosensitive resin composition has an electrical insulation resistance of 8.0.times.10.sup.9 to 1.0.times.10.sup.14 .OMEGA..multidot.cm after photocuring. A photosensitive resin laminated film comprising a flexible film, a photosensitive layer provided on the flexible film, and a releasable film layer provided on the photosensitive layer, wherein the photosensitive layer comprises the above photosensitive resin composition.

Abstract: A planographic original plate requiring no fountain solution, in which a layer allowing adhesion thereof with a silicone rubber layer to decrease through transforming a laser beam into heat and the silicone rubber layer of an addition type containing 10 to 20% by weight of organohydrogenpolysiloxane based on solid content are laminated to a support in this order, thereby providing a planographic original plate requiring no fountain solution which is capable of heat mode recording due to a laser beam and is excellent in image reproducibility and resistance to scratching.

Abstract: The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) an intermediate layer and (iii) a photosensitive layer containing one or more silver halide emulsions being in water permeable relationship with said image receiving layer, characterized in that said intermediate layer comprises at least 0.08 mmole/m.sup.2 of a bromide salt.

Abstract: A process for the production of a color image is described, in which a photosensitive material that has a temporary support film, a colored photosensitive layer and an adhesion-promoting layer that can be activated by heat is laminated at high temperature and under pressure with an image-receiving material which carries, on a support, a pigment layer containing a white pigment. The photosensitive layer is exposed imagewise and developed to produce an image, the temporary support film is peeled off from the image-receiving material before or after exposure to light and, if required, these steps are repeated with at least one further photosensitive material whose colored layer has another color to produce a multi-colored image. The process gives color images having a smaller dot enlargement compared with a halftone original and is particularly suitable for the color testing of copy for multicolor printing.

Abstract: A photosensitive sheet is composed of a plastic film, a subbing layer for nonelectrolytic plating provided thereon consisting of a hydrophilic resin having swelling property and fine particles of a metal or a metallic compound, a nonelectrolytically plated layer provided on the subbing layer and the photoresist layer provided on the nonelectrolytically plated layer. A metal pattern is performed by the steps of: exposing patternwise to light the photoresist layer of the photosensitive sheet, developing the exposed photoresist layer to form a resist pattern on the nonelectrolytically plated layer; forming an electrolytically plated layer on the nonelectrolytically plated layer in the area having no resist; superposing the photosensitive sheet on a substrate; and separating the plastic film from the substrate, keeping both the resist pattern and the electrolytically plated layer on the substrate, to form a metal pattern on the substrate.

Abstract: A light-sensitive material for a color filter is described, which comprises a support having provided thereon a peeling layer and further provided thereon at least three silver halide emulsion layers which are different in color sensitivity. A process for producing a color filter is also described, which comprises the steps of adhering an emulsion side of the light-sensitive material to a light-transmitting substrate, peeling the support off the light-sensitive material, pattern-exposing the emulsion side, and subjecting the material to development processing and desilvering processing.

Abstract: This application discloses a core/shell latex thermal adhesive comprising a thermally softenable polymeric shell having a Tg of greater than 20.degree.C., and a thermally softenable, crosslinked polymeric core having a Tg of less than 20.degree. C., the difference between the Tg of the core and the shell being at least 10.degree.C. This application also discloses a thermally activated adhesive composition comprising:a) from about 50 to 100 parts of a transparent film-forming core/shell latex polymer, wherein the ratio of core to shell of said core/shell latex polymer ranges from about 20/80 to about 80/20,the shell having a Tg above 20.degree. C. and the core having a Tg below 20.degree. C. with the core having a Tg lower than the Tg of the shell by at least 10.degree. C.

Abstract: An image receiving sheet having a support sheet, an intermediate layer and an image receiving layer, wherein the intermediate layer comprises a polymer and a plasticizer having at least one ester bonds and molecular weight of 700 to 3,000. Otherwise, an image receiving sheet having a support sheet and an image receiving layer wherein the image receiving layer comprises a polymer and the plasticizer. A heat sensitive ink sheet has a heat sensitive ink layer which is formed of a heat sensitive ink material comprising colored pigment and thermoplastic resin such as amorphous organic polymer. An image forming method is conducted by using the heat sensitive ink sheet and one of the image receiving sheets by area gradation by the use of a thermal head or laser beam.

Abstract: A masking element is prepared with a photosensitive layer on a suitable support, overcoated with a masking layer containing an infrared absorbing compound and a thermally bleachable dye. The dye is bleached by imagewise laser irradiation, followed by floodwise exposure to produce an image in the photosensitive layer corresponding to the laser produced image. The outermost layers are removed and development provides a suitable negative-working printing plate.

Abstract: The present invention provides a photosensitive color proofing article incorporating an antihalation effective amount of one or more antihalation dyes of the general formula (I) shown below: ##STR1## wherein: Z is an oxygen atom, NH, or NR; R is an alkyl group of 1 to 12 carbon atoms or a hydrogen atom; R.sup.1 represents a perfluoroalkylsulfonyl group of 1 to 12 carbon atoms or an arylsulfonyl group; and R.sup.2 represents a perfluoroalkylsulfonyl group of from 1 to 12 carbon atoms; an arylsulfonyl group; or a cyano group. The antihalation dyes of formula (I) absorb radiation within the wavelength range of from about 325 to 700 nm and preferably, from about 325 to 450 nm.

Abstract: A printing plate laminate is formed of a carrier sheet, sticky back, a substrate and photopolymer layer. The substrate has a thickness of only about 0.2 mil to about 3 mil. The printing plate laminate can be formed from a process wherein photopolymerizable resin is coated onto a bilayer substrate, where one layer of the substrate is in contact with the photopolymer layer and has a thickness of about 0.2 mil to about 3 mil, and a second layer of the substrate has a thickness of about 4 mil to about 7 mil. A pressure sensitive adhesive lies between the first and second layers of the substrate, so that the second layer may be easily peeled away from the first layer after selectively curing and then developing the photopolymer layer.

Abstract: A photosensitive composition comprises an organic polymer and a photo-polymerizable monomer. The photo-polymerizable monomer has the following formula: ##STR1## in which R.sup.1 represents an alkylene group having 2 to 5 carbon atoms, R.sup.2 represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and n represents the number of 0.5 to 5.

Abstract: A negative-acting color proofing element comprising, sequentially, (i) a strippable, transparent cover sheet; (ii) a crosslinked layer, which comprises a polymer having phenolic groups; (iii) a color layer, which comprises an organic binder, a polymerizable monomer, a colorant, and an optional photoinitiator, (iv) a photoadhering layer, which comprises a polymerizable component having at least one ethylenically unsaturated group; a polymer comprising polyvinyl acetal and polyvinyl alcohol segments, having from about 1 to about 40 weight % polyvinyl alcohol content; and an optional photoinitiator, wherein least one of either the color layer or the photoadhering layer contains a photoinitiator; (v) a thermoplastic adhesive layer; and (vii) a receiver sheet. Preferably the polymerizable component and photoinitiator diffuse into the color layer during assembly of the element.

Abstract: Disclosed is a color image-formable material for forming and transferring a color image. The color image-formable material has a support, a cushion layer provided on the support and color light-sensitive layer containing a light-sensitive composition and a coloring agent provided on the cushion layer. It gives a transferred image by forming a color image portion by imagewise exposure and developing treatment and then transferring the color image portion alone to an image-receiving material. The cushion layer has a hardness of 40 to 85 and a thickness of 15 .mu.m to 100 .mu.m. A process for preparation of the color image-formable material is also disclosed.

Abstract: A process for the production of a color image is described, in which a photosensitive material that has a temporary support film, a colored photosensitive layer and an adhesion-promoting layer that can be activated by heat is laminated at high temperature and under pressure with an image-receiving material which carries, on a support, a pigment layer containing a white pigment. The photosensitive layer is exposed imagewise and developed to produce an image, the temporary support film is peeled off from the image-receiving material before or after exposure to light and, if required, these steps are repeated with at least one further photosensitive material whose colored layer has another color to produce a multi-colored image. The process gives color images having a smaller dot enlargement compared with a halftone original and is particularly suitable for the color testing of copy for multicolor printing.

Abstract: The present invention is a bar code label including an opaque polymer film substrate having a first side and a second side. A first primer layer is superposed on the first side of the opaque polymer film substrate and a light-sensitive silver halide photographic emulsion layer is superposed on the first primer layer. The light-sensitive photographic emulsion contains silver halide grains, a hydrophilic colloid, a polymer latex and a hardener. An overcoat layer is superposed on the light-sensitive photogaphic emulsion layer and includes a hydrophilic colloid and an image stabilizer. A second primer layer is superposed on the second side of the opaque polymer film and an antistatic layer is superposed on the second primer layer. The antistatic layer includes a polymeric binder and an antistatic agent. A pressure sensitive adhesive layer is superposed on the antistatic layer and a removable release sheet is superposed on the pressure sensitive adhesive layer.

Abstract: A photosensitive material useful for the production of lithographic printing plates, which contains (a) a support suitable for lithographic printing plates, (b) a hydrophilic layer which contains a crosslinkable organic polymer or is a layer formed by crosslinking such a polymer, (c) a photopolymerizable layer and (d) a transparent cover film, the adhesion of the photopolymerizable layer (c) to the hydrophilic layer (b) and/or to the cover film (d) being changed by exposure. The material permits the production of lithographic printing plates having high printing performance without the use of liquid processing agents.

Abstract: A photosensitive material useful for the production of lithographic printing plates, which contains (a) a support suitable for lithographic printing plates, (b) a hydrophilic layer which contains a crosslinkable organic polymer or is a layer formed by crosslinking such a polymer, (c) a photopolymerizable layer and (d) a transparent cover film, the adhesion of the photopolymerizable layer (c) to the hydrophilic layer (b) and/or to the cover film (d) being changed by exposure. The material permits the production of lithographic printing plates having high printing performance without the use of liquid processing agents.

Abstract: The present invention provides an imaging element comprising on a hydrophilic base a hydrophobic photopolymerizable composition capable of being irradiated with actinic light through the support and/or through the front and containing a photopolymerizable composition characterized in that a water-swellable barrier layer comprising at least one non-proteinic water-soluble film-forming polymer is located between said hydrophilic base and said hydrophobic photopolymerizable composition, contiguous to the hydrophilic base and is coated at a ratio of 0.01 to 2.0 g/m2, said water-swellable barrier layer being capable of being peeled off of said hydrophilic base by dry development.

Abstract: A lithographic printing plate is comprised of a support having a porous hydrophilic surface, such as grained and anodized aluminum, and an oleophilic imaging layer overlying the porous hydrophilic surface. The imaging layer is comprised of an oleophilic, radiation-absorbing, heat-sensitive, film-forming composition which is readily removable from the porous hydrophilic surface prior to imagewise exposure and which is adapted to form a lithographic printing surface as a result of imagewise exposure to absorbable electromagnetic radiation and subsequent removal of the non-exposed areas to reveal the underlying porous hydrophilic surface. Examples of suitable techniques for removing the non-exposed areas include contact with printing ink on the press, removal by lamination and peel development steps and removal by use of an integral stripping layer.

Abstract: A lithographic printing plate is comprised of a support having a porous hydrophilic surface, such as grained and anodized aluminum, and an oleophilic imaging layer overlying the porous hydrophilic surface. The imaging layer is comprised of an oleophilic, radiation-absorbing, heat-sensitive, film-forming composition which is readily removable from the porous hydrophilic surface prior to imagewise exposure and which is adapted to form a lithographic printing surface as a result of imagewise exposure to absorbable electromagnetic radiation and subsequent removal of the non-exposed areas to reveal the underlying porous hydrophilic surface. Examples of suitable techniques for removing the non-exposed areas include contact with printing ink on the press, removal by lamination and peel development steps and removal by use of an integral stripping layer.

Abstract: The present invention provides an imaging element comprising in the order given (i) a hydrophilic base, (ii) an image receiving layer containing physical development nuclei, (iii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer and (iv) an intermediate layer between said image receiving layer and said photosensitive layer, characterized in that said intermediate layer comprises particles of a water insoluble inorganic compound having a number average size not lower than 0.02 .mu.m and lower than 3 .mu.m.According to the present invention there is also provided a method for making an offset printing plate according to the silver salt diffusion transfer process by using said imaging element.sup.+.

Abstract: An image-receiving element for use in photographic and photothermographic diffusion transfer film units of the type wherein the image-receiving element is designed to be removed or "peeled-apart" from a photosensitive element following exposure and processing. The present image-receiving element comprises in sequence, a support, an image-receiving layer, and an overcoat layer. The overcoat layer comprises a major amount by dry weight of water-insoluble particles and a minor amount by dry weight of a water-insoluble polymeric latex binder material. The water-insoluble particles may comprise inorganic particles such as colloidal silica, and/or organic particles such as water-insoluble polymeric latex particles.

Abstract: A method of manufacturing a light-heat converting heat mode recording material comprises a first support having thereon a cushion layer, an intermediate layer and an image forming layer in that order, the material comprising a light-heat converting substance, the method comprising the steps of a) providing a first unit comprising a first support; b) providing a second unit comprising a second support having thereon the image forming layer; c) superposing the second unit on the first unit so that the image forming layer is in close contact with the first unit; and d) separating the second support from the image forming layer to form the recording material, wherein the second support has a releasing layer containing a cross-linked compound on the image forming layer side, the releasing layer being insoluble in a coating solvent for both the intermediate layer and the image forming layer, and provided between the second support, or has a releasing layer containing a fluorine-containing compound or a long chain a

Abstract: A photosensitive transfer material comprising a temporary support and a colored photopolymer layer formed on the temporary support. The colored photopolymer layer contains at least one quinophthalone dye. Also, disclosed is a method of forming an image using the photosensitive transfer material, to thereby form a multicolor image having good chromaticity even when organic solvent-soluble dyes are used and, in addition, having excellent transmission and light- and heat resistance. A color filter exhibiting high contrast as a liquid crystal display can also be produced using the photosensitive transfer material.

Abstract: The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei, (ii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer and (iii) an intermediate layer between said image receiving layer and said photosensitive layer, characterized in that said intermediate layer comprises particles of an alkali insoluble non-polymeric organic compound having a melting point of at least 50.degree. C, said particles having a number average size between 0.1 .mu.m and 10 .mu.m.According to the present invention there is also provided a method for making an offset printing plate according to the silver salt diffusion transfer process by using said imaging element+.

Abstract: Disclosed are a color image-formable material which comprises a support, a cushion layer provided on the support and a color light-sensitive layer containing a light-sensitive composition and a coloring agent provided on the cushion layer and gives a transferred image by forming a color image portion by imagewise exposure and developing treatment and then transferring the color image portion alone to an image-receiving material,wherein the surface at a color light-sensitive layer side of the cushion layer has an average gloss (GS (60.degree. )) of 30 or more and the color light-sensitive layer is provided on the cushion layer, a process for preparing the same.

Abstract: A camera speed lithographic plate precursor composition is used for the preparation of waterless, imaged printing plates. The plates comprise a solid substrate with a first layer of a photopolymerizable, oleophilic coating; a second layer of silicone rubber; a third protective film layer; and a top or fourth layer comprising a silver halide emulsion containing polymeric binders or keying agents.

Abstract: An image-bearing element comprising of a white, translucent, metallized film article wherein the film article comprises a flexible, heat resistant, polymeric film material with opposite sides. The film material has deposited on a first side a metal coating which both reflects and transmits visible light and capable of transmitting from about 1% to about 70% of incident visible light cast thereon. The second side of the film material has a white outermost surface and has a visible light opacity of from about 0.5 to about 0.98.

Abstract: The present invention provides a method for obtaining an imaging element suitable for use in a silver salt diffusion transfer process by the steps of:preparing an image receiving element by coating the anodized surface of an aluminum foil with an image-receiving layer comprising physical development nuclei,preparing a photosensitive layer packet by coating a temporary base with at least one photosensitive silver halide emulsion layer,pressing the thus formed photosensitive layer packet with its photosensitive silver halide emulsion coated side against said image receiving layer, which has been wet with an aqueous moistening liquid, andoptionally removing said temporary base, characterized in that between said temporary base and said at least one photosensitive silver halide emulsion layer a barrier layer is present which is substantially free of developing agents, is substantially unhardened, comprises one or more hydrophilic binders in an amount of at least 0.25 g/m.sup.

Abstract: (A) being a photosensitive relief-forming layer in which imagewise exposure to actinic light results in different solubilities of the exposed and unexposed parts, and this layer consists of a mixture of:(a1)one or more polymeric binders,(a2)one or more photopolymerization initiators,(a3)one or more organic compounds which are compatible with the binder (a1) and contain photopolymerizable olefinically unsaturated groups and, if required,(a4)one or more assistants,(B) being a smooth or dull, nontacky release layer (B) which is transparent to light, soluble or swellable in the relevant liquid media and formed by a polymer forming strong films and additives contained therein, and(C) being a cover sheet which can be detached from the release layer (B), the release layer (B) containing a metal salt as an additive,is suitable for the production of printing plates.

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: A transfer recording medium comprising a substrate and a distributed layer of image forming elements, and an image forming method using the recording medium are provided. The distributed layer comprises first and second image forming elements. The first image forming elements comprise at least two species of different coloring characteristics which are capable of decreasing their transferabilities when provided with at light and heat energy under respectively prescribed at least two energy application conditions corresponding to the coloring characteristics. The second image forming element is capable of decreasing its transferability under any one of the at least two energy application conditions.

Abstract: The present invention provides a photosensitive transfer sheet which does not generate cutting powder when the exposed and developed transfer sheet is cut with scissors as needed after forming an image. Additionally, no film floating and image disruption accompanied by a kink mark generated on handling the exposed and developed transfer sheet are observed. Furthermore, the above-described performance and transferability are maintained even under low humidity conditions.

Abstract: A laminar thermal imaging medium is prepared from a first element comprising a first sheet transparent to image-forming radiation and having at least a surface zone or layer of polymeric material heat-activatable upon subjection of the thermal imaging medium to brief and intense radiation, the first element carrying a layer of porous or particulate image-forming substance having cohesivity in excess of its adhesivity for the polymeric heat-activatable layer, and, on the opposed side of the layer of porous or particulate image-forming substance from the surface zone or layer, a first layer of adhesive, and a second element comprising a second sheet carrying a second layer of adhesive. The second layer of adhesive comprises a polymeric hardenable adhesive comprising a macromolecular organic binder having acidic groups, and a photopolymerizable monomer.

Abstract: A photosensitive material for making color-proofing films for multicolor printing is described, withA) a transparent flexible support of plastic,B) a photopolymerizable layer on (A) which containsB1) a polymeric binder,B2) a compound polymerizable by a free-radical mechanism,B3) a compound which is capable of initiating the polymerization of (B2) under the action of actinic light andB4) a dye or a color pigment in a primary color of the multicolor print, andC) a thermoplastic adhesive layer which comprises at least one polymer which contains units (C1) with aliphatic side chains having at least 5 carbon atoms.The material is processed by laminating to an image receptor sheet, exposure and peeling apart of support and image receptor sheet, the unexposed layer areas remaining together with the adhesive layer on the image receptor sheet. These steps are repeated with at least one further image in primary colors. The material provides for a reduction of the background stain in the non-image areas.

Abstract: A laminating system for bonding, to receiver stock, a lamination sheet of the type including a carrier and a material to be applied to the receiver stock, and for de-laminating the carrier from the receiver stock after the material has been applied to the receiver stock includes a superposed sandwich of the lamination sheet and the receiver stock. A de-lamination leader is associated with one edge of the lamination sheet and the receiver, whereby the carrier can be easily peeled from the receiver stock starting at the one edge. The leader may be between the one edge of the lamination sheet and the receiver stock so that the edge does not laminate to the receiver stock upon application of heat and pressure. Alternatively, the leader may be butt joined to the one edge of the lamination sheet, such as by tape. A pair of adhesive stripes, one stripe being more adhesive than the other, may also be used to join the materials.

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 peel-developable imaging medium for the imagewise recordation of information is provided, the imaging medium having therein a plurality of fracturable layers, the plurality comprising a porous or particulate image-forming layer and a release layer, and at least one of the fracturable layers being deposited from a dispersion containing a hydrophobic cycloaliphatic polyepoxide. The laminar imaging medium is characterized by good imaging performance in an extended range of environmental conditions.

Abstract: A laminar thermal imaging medium is prepared from a first element comprising a first sheet transparent to image-forming radiation and having at least a surface zone or layer of polymeric material heat-activatable upon subjection of the thermal imaging medium to brief and intense radiation, the first element carrying a layer of porous or particulate image-forming substance having cohesivity in excess of its adhesivity for the polymeric heat-activatable layer, and, on the opposed side of the layer of porous or particulate image-forming substance from the surface zone or layer, a first layer of adhesive, and a second element comprising a second sheet carrying a second layer of adhesive. The second layer of adhesive comprises a polymeric hardenable adhesive comprising a macromolecular organic binder having acidic groups, and a photopolymerizable monomer.

Abstract: The present invention provides an imaging element comprising in the order given (i) a hydrophilic base, (ii) an image receiving layer containing physical development nuclei and (iii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer, characterized in that said photosensitive layer or another optional layer being in water permeable relationship therewith contains at least one gelatin species whereof a 10% by weight aqueous solution at 36.degree. C. and pH 6 has a viscosity lower than 20 mPa.s at a shearing rate of 1000 s.sup.-1.

Abstract: A binary image comprising a plurality of first areas, at which a porous or particulate image-forming substance is adhered to a substrate, and a plurality of second areas, at which the substrate is free from the image-forming substance, is protected by laminating thereto a laminating sheet comprising a durable layer and a support layer with the durable layer facing the image, so that the durable layer adheres to both the first and second areas of the image. The support layer is then displaced away from the image such that the durable layer remains attached to the image. The durable layer is substantially transparent and comprises a polymeric organic material having incorporated therein a siloxane, the siloxane being incorporated into the polymeric material in such a manner that it is not removed therefrom by hexane, isopropanol or water.

Abstract: A photosensitive material for making color-proofing films for multicolor printing is described, withA) a transparent flexible support of plastic,B) a photopolymerizable layer on (A) which containsB1) a polymeric binder,B2) a compound polymerizable by a flee-radical mechanism,B3) a compound which is capable of initiating the polymerization of (B2) under the action of actinic light andB4) a dye or a color pigment in a primary color of the multicolor print, andC) a thermoplastic adhesive layer which comprises at least one polymer which contains units (C1) with aliphatic side chains having at least 5 carbon atoms.The material is processed by laminating to an image receptor sheet, exposure and peeling apart of support and image receptor sheet, the unexposed layer areas remaining together with the adhesive layer on the image receptor sheet. These steps are repeated with at least one further image in primary colors. The material provides for a reduction of the background stain in the non-image areas.

Abstract: Heat-sensitive imaging element comprising a support carrying a binder layer, optionally an intermediate adhesive layer, and and a barrier layer that is ablatable by a laser beam or permeabilizable under the influence of a laser beam, wherein said binder layer contains at least one hydrophobizing agent capable of diffusing under the influence of heat through holes made in said barrier layer or through permeabilized parts of said barrier layer and capable of reacting with the oleophobic surface of a printing plate precursor brought in face-to-face contact with said barrier layer. The present invention also relates to a process for producing a lithographic printing plate, wherein use is made of such heat-sensitive imaging element.