Abstract: An image forming method, comprises the steps of, using an image forming medium containing a heat-diffusible coloring matter, a polymerizable polymer precursor and a polymerization initiator; causing said polymerizable polymer precursor of said image forming medium to selectively polymerize to form a latent image comprised of a polymerized area and an unpolymerized area; andheating said image forming medium on which said latent image has been formed and which is laid overlapping on an image receiving medium, so as to satisfy the following formula (A):Tg.sub.1 .ltoreq.Ttrans.ltoreq.Tg.sub.2 (A)wherein Ttrans represents a temperature of said image forming medium, Tg.sub.1 represents a glass transition point of said unpolymerized area, and Tg.sub.

Abstract: Ligomeric sulfonic acid derivatives having repeating units of the formula I ##STR1## in which R.sup.1 is an alkyl, haloalkyl or aryl radical,R.sup.2 is a hydrogen atom, an alkyl, alkenyl or aryl radical or the group (R.sup.1 --SO.sub.2 --O--).sub.n X--,R.sup.3 is a cycloalkylenedialkyl, cycloalkenylenedialkyl, arylenedialkyl, heteroarylenedialkyl group, alkylene, alkenylene, alkynylene, cycloalkylene or arylene group,X is an alkylene, cycloalkylene or arylene group Y is O, S, CO, CO--O, SO.sub.2, SO.sub.2 --O, NR.sup.4, CO--NH, O--CO--NR.sup.5, NH--CO--NR.sup.5 or NR.sup.5 --CO--O,Z is O, CO--NR.sup.6, O--CO--NR.sup.6 or NH--CO--NR.sup.6,R.sup.4 is an acyl radical,R.sup.5 is a hydrogen atom or an alkyl-, cycloalkyl, alkenyl, alkynyl or aryl radical,R.sup.6 is an alkyl, cycloalkyl, alkenyl, alkynyl or aryl radical,k is 0, 1, 2, 3 or 4,m is an integer greater than 1 andn is 1, 2 or 3,generate sulfonic acids under irradiation and are cleavable by the latter.

Abstract: A radiation-sensitive mixture which contains compounds of the formula I which generate under irradiation sulfonic acids and are cleavable by the latter ##STR1## in which R.sup.1 is an unsubstituted or substituted alkyl, fluorinated alkyl, perfluoroalkyl or aryl radical,R.sup.2 is a hydrogen atom, an unsubstituted or substituted alkyl radical, or an unsubstituted or substituted aryl radical, (R.sup.1 --SO.sub.2 --O--).sub.n X--, or R.sub.3 O--,R.sup.3 and R.sup.4 are identical or different and are unsubstituted or substituted alkyl, cycloalkylalkyl, cycloalkenylalkyl or aralkyl radicals, in which 1 to 3 aliphatic CH.sub.2 or CH groups are optionally replaced by one or more of NR.sup.5, O, S, CO, CO--O, CO--NH, O--CO--NH, CO--NH--CO, NH--CO--NH, SO.sub.2, SO.sub.2 --O or SO.sub.2 --NH, or unsubstituted or substituted alkenyl, alkynyl, cycloalkyl or cycloalkenyl radicals, or R.sup.3 and R.sup.4 are mutually linked to form an unsubstituted or substituted heterocyclic ring,R.sup.

Abstract: Disclosed herein is a photosensitive composition comprising:(A) 5 to 60 wt % of an o-quinonediazide compound;(B) 0.05 to 10 wt % of an s-triazine compound(C) 0.01 to 10 wt % of a dye for changing the color tone by the interaction with the photodecomposition product of the said s-triazine compound;(D) 30 to 90 wt % of a novolak resin containing less than 5 wt % of phenols; and(E) 1 to 60 wt % of a vinyl-based polymer having at least a phenolic hydroxyl group.

Abstract: A method for locally enhancing the contrast of a yellow image, which method comprises providing a yellow image on a white background, said image comprised of yellow areas and white areas, said yellow areas and white areas exhibiting pH levels which differ by at least 0.5 in an aqueous environment, applying to at least a portion of said yellow image a solution of a pH color changing dye which will change color to a color other than yellow when coated on one of said yellow areas or white areas and not change color when coated on the other of said yellow areas or white areas, thereby forming a colored image duplicating the yellow image in areas where the solution has been applied, said colored image having a visually better contrast than said yellow image.

Abstract: A recording material comprising a support coated with a photosensitive layer comprising a photosensitive diazo compound enclosed in microcapsules and a coupling component. The microcapsules are produced by forming an organic solution containing the diazo compound and a wall monomer, and emulsifying the organic solution in an aqueous solution containing an anionic surface-active agent and polyvinylpyrrolidone to produce oil droplets containing the wall monomer. The wall monomer is polymerized to form a wall around the oil droplets. When heat is applied to the photosensitive layer under alkaline conditions, the coupling component reacts with the diazo compound to form a color.

Abstract: This invention relates to negative working photopolymerizable sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to accurately predict the image quality from a lithographic printing process. Image development is by peel apart processing.

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: The present invention concerns a phototackifiable composition useful as a coating on a substrate consisting of an optically clear blend of two or more polymers and a photosensitive compound that forms a strong acid on exposure to actinic radiation. The invention also relates to a process for coating such a composition on a support and toning the image-wise exposed composition on the support.

Abstract: A self-contained imaging sheet comprising in order:(a) a support;(b) a first layer comprising photosensitive microcapsules having an internal phase, said internal phase comprising an image forming agent and a photosensitive composition which undergoes a physical transformation in response to exposure to actinic radiation;(c) a second layer comprising a developer material; and preferably(d) a third layer comprising an adhesive forming component, said self-contained imaging sheet being useful in forming images on plain paper by a process which comprises imagewise exposing said imaging sheet to actinic radiation, forming an image on said developer material, transferring the image bearing developer layer to said plain paper, and separating said imaging sheet from said plain paper, wherein said image bearing developer layer remains adhered to said plain paper and said microcapsule layer remains adhered to said support.

Abstract: A three-dimensional image is produced using an imaging medium having a lenticular screen, the lenticles of the screen dividing the opposed surface of the imaging medium into a plurality of elongate image areas, the imaging medium having on the opposed side thereof a radiation-sensitive layer, the radiation-sensitive layer comprising a color-forming composition adapted to undergo a change of color upon increase in the temperature of the radiation-sensitive layer above a color-forming temperature for a color-forming time.

Abstract: A radiation sensitive composition comprises a radiation sensitive material and a dye which dye undergoes a colour change in the radiation-struck areas on image-wise exposure of the composition and a colour change when the exposed and developed composition is heated to a temperature of at least 180.degree. C.

Abstract: An aperture pattern printing plate for manufacturing a shadow mask having an opaque layer form in parts on a surface of a transparent plate. The parts of the opaque layer corresponding to apertures in an effective area of the shadow mask. The opaque layer projecting from the transparent plate, and having a thickness of 30 to 50 .mu.m.

Abstract: Undesired stain is minimized for pearlescent toners, adapted for toning elements having non-tacky and tacky areas that define an image, by including in the toner inert, substantially spherical particles having a particle size of approximately 0.3 to 42 microns and by including a slip-agent surface coating on at least the pearlescent pigment particles, and preferably also on the inert, substantially spherical particles.

Abstract: A novel light-sensitive heat-sensitive composition is disclosed, comprising a photohardenable composition, a dye which discolors upon reacting with a base, and a base precursor. A novel light-sensitive heat-sensitive recording material is also disclosed, comprising a support having provided thereon the above described light-sensitive heat-sensitive composition. In a preferred embodiment, the dye is a spectral sensitizing dye for the photohardenable composition. Furthermore, a novel image formation process is disclosed, comprising the steps of: (a) imagewise exposing the light-sensitive heat-sensitive recording material to light to cure the exposed portions of the recording material; and (b) uniformly heating the imagewise exposed recording material to discolor the dye in the unexposed portions thereof.

Abstract: A negative-working, radiation-sensitive composition comprising an admixture in a solvent of:(a) at least one cyclized rubber polymer,(b) at least one photoactive compound, and(c) an effective contrast enhancing amount of at least one rubber-soluble azo dye containing a reactive acrylate or methacrylate group of formula (I): ##STR1## wherein Q is a reactive group of the structure ##STR2## wherein Y is either H or CH.sub.3 ; wherein R.sub.1 is either H, CH.sub.3, C.sub.2 H.sub.5, CH.sub.2 CH.sub.2 CN, CH CH.sub.2 OH or Q;wherein R.sub.2 is either H, CH.sub.3, OCH.sub.3, or NHCOCH.sub.3 ;wherein R.sub.3 is either H, OCH.sub.3 or OC.sub.2 H.sub.5 ; andwherein X is selected from the group consisting of an unsubstituted or a substituted benzene, thiazole, thiophene, benzothiazole, benzoisothiazole, thiadiazole, and pyrazole moiety having, if substituted, 1-3 substituent groups selected from cyano, nitro, acetyl, and halogen groups; the amount of said cyclized rubber being about 90% to 99.

Abstract: A non-electroscopic prolonged tack toner for transferring toned images to an image receptor at low temperatures with improved back transfer characteristics.

Abstract: Structures for items such as promotional materials, game pieces, lottery tickets, security documents and other articles, which feature one or more thermal reactive layers that are activated by heat from a hidden image formed of infrared sensitive, heat generating material such as carbon black preprinted under the thermal reactive layers during manufacture. The thermal reactive layers permit transmission of radiant energy such as infrared to the heat generating, hidden layers. The heated image conducts heat to the thermal reactive layers which employ a coloring agent and a developer which, when exposed to the heat, react or act in concert in order to form a corresponding image on the face of the item.

Abstract: An imaging medium comprises a layer, depolymerizable by exposure to actinic radiation and substantially non-tacky prior to depolymerization but becoming tacky upon at least partial depolymerization, disposed adjacent a layer of an imaging material, which has a cohesive strength greater than the adhesive strength between the imaging material and the depolymerizable layer prior to depolymerization. This medium is imagewise exposed to radiation, thereby causing at least partial depolymerization of the polymer in the exposed areas, so rendering these exposed areas tacky and firmly attaching exposed areas of the imaging material layer to the depolymerizable layer. The unexposed areas of the imaging material are then removed from the depolymerizable layer.

Abstract: An imaging medium comprises a layer, depolymerizable by exposure to actinic radiation and undergoing a reduction in cohesivity upon at least partial depolymerization, disposed adjacent a layer of an imaging material, which has a cohesive strength greater than the cohesive strength of the depolymerizable layer after depolymerization. This medium is imagewise exposed to radiation, thereby causing at least partial depolymerization of the polymer in the exposed areas, so rendering these exposed areas lower in cohesivity than the unexposed areas. The exposed areas of the imaging material are then removed from the depolymerizable layer.

Abstract: A fluororesin-coated material having markings indicated thereon is disclosed, which material comprises (1) a substrate having coated thereon a fluororesin composition comprising a high-molecular weight material having a benzene ring and at least one of a nitrogen atom, a sulfur atom and a carbonyl group in the main chain thereof, or (2) a substrate having coated thereon the high-molecular weight material, and further having coated on the high-molecular weight material a fluororesin composition. The markings are indicated on the coated material by irradiating the coated surface of the coated material with electromagnetic waves having a wavelength of 600 nm or less to thereby cause a change in the color of the high-molecular weight material at irradiated parts and provide a difference in color between the irradiated parts and unirradiated parts.

Abstract: A direct pigment photographic printing process and composition based on a two-step coating process comprising a first coating applied to a sealed substrate containing between 2 to 8 and 8 to 2 weight parts of gum arabic to gelatin, and then applying a second top coating containing preferred ratios of gum arabic to gelatin. The process is based on heating the first and second coating compositions sufficiently above about 105.degree. F. prior to application to the substrate to assure homogeneous mixtures of each coating at the time of application.

Abstract: An image development method is disclosed. In the method, a photoresist layer on a metal surface is exposed for development. The developer then used is a solution which will both develop the photoresist image and cause any exposed metal surface to change to a predetermined color. The development process then proceeds until the predetermined color is exposed whereupon the process ceases. The preferred metal is copper and the preferred developer is an aqueous solution of sodium sulphide and ammonium polysulfide.

Abstract: This invention relates to the preparation of a supported modulating film having a permanent yellow imaged layer of the homopolymer of 10,12-docosadiyndioic acid monomer; said monomer having the structure ##STR1## and to the use of said film as a blue light modulator in the production of master printing plates or printed circuit boards.

Abstract: This invention relates to the preparation of a supported modulating film having a permanent yellow imaged layer of the homopolymer of a crystalline diacetylene cinnamate monomer ##STR1## and to the use of said film as a light modulator in the production of master printing plates or printed circuit boards.

Abstract: A process for preparing images on a tonable, light-sensitive layer in which a transfer layer containing a toner and a core/shell polymer as a binder is used. The core polymer has a glass transition temperature above 50.degree. C. and the shell polymer has a glass transition temperature below 40.degree. C. Such transfer layers are used in proofing processes for high quality printing.

Abstract: This invention relates to a method for forming a colored image on a degradable sheet material. As a result, a negative- or positive-working color proofing sheet can be produced on a variety of printing paper stocks. Upon exposure to an actinic radiation source through a screened image and development, it can accurately reproduce the image on the degradable sheet. The construction is useful as a color proof which can be employed to accurately predict the image quality from a lithographic printing process on a variety of printing surfaces.

Abstract: An image forming method comprising;subjecting an image forming medium containing at least a photosensitive silver halide, an organic silver salt, a reducing agent, a polymerizable polymer precursor and a photopolymerization initiator, to imagewise exposure, followed by heating to produce a light-absorbing organic compound in said image forming medium; and subjecting said image forming medium in which said light-absorbing organic compound has been produced, to polymerization exposure to cause said polymerizable polymer precursor to polymerize; where the light-absorbing characteristics of said light-absorbing organic compound are utilized to suppress the polymerization of said polymerizable polymer precursor at the area at which said light-absorbing organic compound has been produced.

Abstract: A light-sensitive material comprises a support and a light-sensitive layer provided thereon. The light-sensitive layer contains silver halide, a reducing agent and a polymerizable compound. In the light-sensitive material of the present invention, the polymerizable compound is a (meth)acrylic ester of an adduct of ditrimethylolpropane with an alkylene oxide. The amount of the alkylene oxide in the adduct is 1 to 10 mole based on one mole of ditrimethylolpropane.

Abstract: Layer transfer process for image production wherein predetermined areas of the surface of an image carrier (21) are prepared to accept a color layer, the image carrier (21) and a color carrier (22) of layer transfer material are brought into mutual contact under pressure, and the color carrier is removed from the image carrier, so that color remains on the predetermined areas of the image carrier. A high uniformity of colorant application can be achieved over the entire surface of the image carrier. The process is performed by an apparatus with at least one roll nip (31) formed by two hard rolls (11, 12), preferably with different diameters, in which the two rolls are mutually offset relative to the feed direction (30) of the image carrier (21).

Abstract: A photomask for an ultraviolet light with a contrast of 10 or larger can be fabricated by generating a color center by irradiating a calcium fluoride crystal substrate with a KrF excimer laser (wavelength of 248 nm) with an energy of 10 J/cm.sup.2 through an original photomask formed by a chromium film on a quartz substrate and forming a pattern by a color center corresponding to an original photomask pattern. In the same way, a similar photomask can be fabricated by irradiating a calcium fluoride crystal substrate with X-rays having a wavelength ranging from 0.5 to 1.0 nm through an original mask formed by a gold film on the silicon substrate.

Abstract: Negative-working lithographic printing plates comprise a radiation-sensitive composition having incorporated therein a photocrosslinkable polymer, containing the photosensitive group ##STR1## as an integral part of the polymer backbone, and a print-out composition which produces an optical density difference upon exposure to activating radiation and thereby enables the exposed image on the printing plate to be seen before the plate is processed. The print-out composition comprises a leuco form of a dye having one or more removable hydrogen atoms, the removal of which forms a compound colored differently from the leuco form; a photooxidant which has a photoscissionable nitrogen-oxygen bond, the photooxidant serving to convert the leuco dye to the differently colored form when the composition is exposed to activating radiation; and a heteroaromatic amine N-oxide which functions to improve the photo-efficiency of the print-out composition and thereby increase the print-out density.

Abstract: Radiation-sensitive compositions which are especially useful in the production of negative-working lithographic printing plates comprise a photocrosslinkable polymer, containing the photosensitive group ##STR1## as an integral part of the polymer backbone, and a print-out composition which produces an optical density difference upon exposure to activating radiation and thereby enables the exposed image on the printing plate to be seen before the plate is processed. The print-out composition comprises a leuco form of a dye having one or more removable hydrogen atoms, the removal of which forms a compound colored differently from the leuco form; a photooxidant which has a photoscissionable nitrogen-oxygen bond, the photooxidant serving to convert the leuco dye to the differently colored form when the composition is exposed to activating radiation; and a heteroaromatic amine N-oxide which functions to improve the photo-efficiency of the print-out composition and thereby increase the print-out density.

Abstract: A radiation sensitive composition comprises a radiation sensitive material and a dye which dye undergoes a color change in the radiation-struck areas on image-wise exposure of the composition and a color change when the exposed and developed composition is heated to a temperature of at least 180.degree. C.

Abstract: A method of manufacturing an aperture pattern printing plate in a limited number of steps using only one original printing plate. The method produces transparent portions on a portion of the printing plate corresponding to a non-effective area of a shadow mask, and opaque portions on a portion of the printing plate corresponding to an effective area of a shadow mask. The method has the steps of bringing a transparent plate having an unexposed transparent photosensitive layer formed on at least one of its principal surfaces into contact with an original plate having opaque areas corresponding to apertures in a to be constructed shadow mask. A first exposure is performed on the photosensitive layer through the original plate. The photosensitive layer is then developed to render exposed portions of the photosensitive layer opaque. These opaque portions are then etched away. A portion of the photosensitive layer corresponding to the non-effective area of a shadow mask is then covered to prevent exposure.

Abstract: A process for preparing images on a tonable, light-sensitive layer in which a transfer layer containing a toner and a core/shell polymer as a binder is used. The core polymer has a glass transition temperature above 50.degree. C. and the shell polymer has a glass transition temperature below 40.degree. C. Such transfer layers are used in proofing processes for high quality printing.

Abstract: Provided is a multilayer, multicolor overlay proof comprising at least one precolored overlay image and at least one toned overlay image, as well as a process for preparing such an overlay proof.

Abstract: An image forming medium includes a base coated with a layer of at least three kinds of microcapsules encapsulating photocurable compositions for forming a color image thereon. The photocurable compositions contain a radical-polymerizable unsaturated compound, a photosensitizer and a photopolymerization initiator. The photosensitizer may be selected from several dyes which have sensitivity to different spectra of light.

Abstract: This invention relates to a method for forming a colored image on a degradable sheet material. As a result, a negative- or positive-working color proofing sheet can be produced on a variety of printing paper stocks. Upon exposure to an actinic radiation source through a screened image and development, it can accurately reproduce the image on the degradable sheet. The construction is useful as a color proof which can be employed to accurately predict the image quality from a lithographic printing process on a variety of printing surfaces.

Abstract: A novel color image recording method is provided, which comprises exposing to light a light-sensitive material obtained by dispersing a composition containing at least a photopolymerization initiator, a color image-forming substance and a polymerizable compound in a hydrophilic binder and then coating said dispersion on a support, subjecting said polymerizable compound in the exposed portions to polymerization, and then (a) eluting said color image-forming substance contained in the unpolymerized polymerizable compound in the unexposed portions with an alkaline aqueous solution or (b) subjecting said color image-forming substance contained in the unpolymerized polymerizable compound in the unexposed portions to chemical change so that it is discolored, thereby forming dye images.

Abstract: Most fluorocarbon polymer surfaces (especially PTFE and FEP) have hitherto been considered unsuitable for marking by laser printing, which would have obvious attractions for marking such materials in high performance electric cables. It has now been found that such surfaces can be made receptive for laser printed markings. A reflective surface is first formed, preferably by incorporating white pigment into a fluorocarbon base, and a light-transmitting (preferably translucent) ETFE pr ECTFE layer is applied over it. When the reflective layer is based on PTFE or FEP, a primer layer formed from a mixed dispersion of PTFE or FEP and ETFE or ECTPE (as appropriate) is preferably applied before the underlying PTFE or FEP composition is sintered.

Abstract: A resin composition for laser-marking which comprises at least one inorganic compound selected from the group consisting of anhydrous metal borate salt, an anhydrous metal phosphate salt, a phosphoric acid-containing glass, basic zinc carbonate and basic magnesium carbonate, and a resin; and a method for laser-marking the surface of an object composed of the said resin composition by applying laser beams onto the surface.

Abstract: A presensitized plate for use in making a lithographic printing plate which comprises an aluminum substrate provided thereon with a light-sensitive layer comprising a polymer having at least two photodimerizable unsaturated double bonds in the molecule, wherein the light-sensitive layer further comprises a compound having at least one photodimerizable unsaturated double bond and at least one phosphinyl group in each molecule as well as a molecular weight of not more than 2,000. The presensitized plate shows excellent sensitivity and makes it possible to provide a lithographic printing plate showing high printing durability.

Abstract: An aggregated-Group Ib metal colloid is prepared, which may be used to form stable color-differentiated images, by the selective application of thermal energy thereto. The metal aggregates, when exposed to thermal energy, revert either to the unaggregated metal or to an aggregate of lesser dimension. This change induces a color change in the material, which is clearly visible against those areas not so exposed. The metal aggregates, when dispersed in a polymeric matrix, are stable in the absence of heat.

Abstract: A particulate metastable Group Ib metal colloid is prepared is formed by plating a Group Ib metal onto small nuclei in a suspension to form non-spherical particles of varying color. The preparation is stable below about 100.degree. C., but when coated onto a support, can be used to form a visible image by application of thermal energy.

Abstract: A method of forming visible images on a differentiated background comprises the application of thermal energy to a coating of metastable metal colloid on a support. Thermal energy is able to convert the metastable metal colloid to a stable spheroidal form. Computer control of a laser beam or thermal print head can be employed to provide highly resolved images carrying graphic, digital and textural information.

Abstract: A light-sensitive material comprising a light-sensitive layer containing silver halide, a reducing agent and a polymerizable compound provided on a support (the polymerizable compound is contained in microcapsules which are dispersed in the light-sensitive layer), characterized in that a colored layer is provided on the surface of the support, or the support is colored.

Abstract: A light-sensitive material comprises a support and a light-sensitive layer which contains a reducing agent, an ethylenic unsaturated polymerizable compound and silver halide grains having a halogen composition composed of two or more halogens including iodine. The silver halide grains have a core/shell structure, and at least 50% of the silver halide grains have an aspect ratio of not more than 5. The silver iodide content in the shell is higher than that in the core. An image-forming method utilizing the light-sensitive material is also disclosed.

Abstract: A method of manufacturing color filters in which a photosensitive film, which is used for forming filter elements, is formed on a substrate. A photomask with a given stripe pattern is placed above the photoresistive film. Under this condition, the photomasked-film is subjected to a first exposure process. The photomask is then moved in the direction of the stripes in the mask pattern. Following a second exposure process, developing, dyeing and dyeing-preventing processes are performed for color filter element formation. The foregoing steps are performed for each filter element for a specified color.

Abstract: An image transfer method is disclosed, characterized in for the preparation of a color proof wherein separate-in-color images are formed in each colored photosensitive layer of photosensitive material coated on a thermosensitive adhesive layer on a release surface provided on a support from which the thermosensitive adhesive layer is releasable, and a multicolor image is formed on an image receiver by transferring said separate-in-color images onto said image receiver one by one together with said adhesive layer, repeating concurrent heating and pressurizing procedures, and thereafter further submitting the image receiver with the multicolor image formed thereon to heat treatment.