Abstract: A radiation sensitive device is provided with a discontinuous covering layer to improve vacuum draw down. The covering layer is produced by forming a solution or dispersion of the layer-forming material in a liquid hydrocarbon. Drops of the solution or dispersion are then sprayed onto the radiation sensitive device to form the discontinuous covering layer.

Abstract: A light-sensitive transfer sheet is disclosed, which comprises a support having provided thereon a peeling layer comprising an alcohol-soluble polyamide, an alkali-soluble organic polymer and a basic compound, and a color material-incorporated light-sensitive resin layer or a color material layer and a light-sensitive resin layer, in that order.

Abstract: A light-sensitive mixture is described which contains a diazonium salt polycondensation product, a free-radical polymerizable compound having at least one terminal ethylenically unsaturated group and a boiling point at atmospheric pressure above 100.degree. C., a polymerization initiator which forms free radicals under the action of actinic radiation, and, as a first binder, a water-insoluble reaction product which is soluble in organic solvents and in aqueous alkaline solutions, which is a reaction product of an intramolecular anhydride of an organic polycarboxylic acid with a hydroxyl-containing synthetic polymer, and which has no further functional groups capable of reacting with acid anhydrides, and, as a further binder, an acid organic polymer having an acid number above 70, preferably a (meth)acrylic acid copolymer. The mixture is useful for producing planographic printing plates which give long print runs, and is notable for a long shelf life at elevated temperature.

Abstract: It surprisingly has been found that a protective coating composition for diazo-containing materials can be prepared from a cellulose ester and microcrystalline silica. The coating compositions of the invention provide protection for diazo-containing materials from physical and chemical damage. In particular, the protective coating compositions of the invention protect the diazo-containing materials from abrasion.The invention further relates to a method for providing a protective coating on a diazo phototool comprising coating at least the surface of the diazo phototool containing diazo material with a composition comprising a cellulose ester and microcrystalline silica.

Abstract: A light sensitive reprographic paper which is protected against deterioration caused by rough handling. The paper comprises a paper base having first and second surfaces, and a coating on the first surface comprising a light sensitive diazo-containing composition which develops by reaction with ammonia gas. The paper is adapted for development by exposure of one of the first and second surfaces to ammonia gas. A substantially transparent, flexible, polymeric sheet is permanently laminated to the paper surface which is not to be exposed to the gas.

Abstract: A transfer recording medium is disclosed, comprising a light transmitting support having provided thereon a heat transfer solid ink layer via an interlayer having a photolyzable compound. The recording medium provides a clear and high-quality color image on an image-receiving sheet at high speed and low cost irrespective of surface smoothness of the image-receiving sheet.

Abstract: A method for transferring patterns on a silicone ladder type resin, which comprises: applying onto a substrate a silicone ladder type resin to be represented by the following general formula (I) ##STR1## (where: R.sub.1 denotes a phenyl group or a lower alkyl group, and two R.sub.1 's may be the same or different kinds; R.sub.2 denotes hydrogen atom or a lower alkyl group, and four R.sub.2 's may be the same or different kinds; and n represents an integer of from 5 to 1,000); drying the thus applied resin layer; thereafter applying onto the resin layer a cresol novolac type positive photo-resist; forming a predetermined pattern in the photo-resist layer; subjecting the photo-resist layer to pretreatment; and finally etching the silicone ladder type resin.An etching liquid for etching a silicone ladder type resin, which comprises an aromatic type solvent.

Abstract: A photosensitive element which comprises a substrate having a release surface; a photosensitive layer having a photosensitizer, pigment, and mixture of binders with different solubility characteristics; and an adhesive layer coated directly on the photosensitive layer. The adhesive solution dissolves one of the resins in the photosensitive layer but does not dissolve the photosensitizer and the resin used to bind the pigment. During overcoating of the adhesive on the photosensitive layer, an increasing gradient of the soluble resin towards the adhesive layer and a decreasing gradient of the photosensitizer and nonsoluble resin is formed.

Abstract: This invention relates to negative photosensitized 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 predict the image quality from a lithographic printing process.

Abstract: A planographic printing plate suitable for direct printing, which comprises a support comprised of a rubber layer, a photosensitive resin layer laminated on the support and a silicone rubber layer laminated on the photosensitive resin layer. Preferably, a barrier layer is formed between the support and the photosensitive resin layer.

Abstract: Printing plates having a photosensitive layer coated on a support wherein said photosensitive layer contains a powdered solid adhered to the surface of said plate by means of powdering followed by the application of heat or solvent before exposure. Said powders are capable of being removed from said surface during the developing process.

Abstract: A photosensitive element which comprises a substrate having a release surface; a photosensitive layer having a photosensitizer, pigment, and mixture of binders with different solubility characteristics; and an adhesive layer coated directly on the photosensitive layer. The adhesive solution dissolves one of the resins in the photosensitive layer but does not dissolve the photosensitizer and the resin used to bind the pigment. During overcoating of the adhesive on the photosensitive layer, an increasing gradient of the soluble resin towards the adhesive layer and a decreasing gradient of the photosensitizer and nonsoluble resin is formed.

Abstract: The invention provides a photographic article having a protected image which comprisesa) a colored image disposed on a substrate; andb) a thin, transparent, colorless, thermoplastic adhesive composition directly on the surface of the image, wherein said adhesive is substantially non-tacky at room temperature, and comprises one or more thermoplastic polymers of copolymers capable of forming a flexible film, said adhesive being capable of being transferred directly to the image when the adhesive is first disposed on the release surface of a temporary support and said image and adhesive are laminated together under pressure at temperatures of between about 60.degree. C. and about 90.degree. C. and said temporary support is peeled away; andc) a non-self supporting antiblocking layer directly on said adhesive said antiblocking layer being transparent, colorless and comprises one or more organic polymers or copolymers, which coating does not cohesively block at about 50.degree. C. or less.

Abstract: A process for forming a pattern comprising forming an alkali-soluble polymer layer on a substrate, forming a radiation-sensitive composition layer containing a diazonium salt on the alkali-soluble polymer layer to form a resist layer having a two-layer structure, exposing the resist layer to a radiation to cause the change in solubility in an aqueous alkaline solution at the boundary between the two layers and forming a predetermined pattern in the resist layer by a usual resist process. The resist layer may comprise a plurality of layers comprising the two-layer structure as a repeating unit structure.

Abstract: The matting agent particles of matted photographic imaging materials contain a finely divided solid as well as a dye that is only present at the image-forming points after exposure and development of the material. The starry night effect is thereby avoided. The dye can be formed during exposure and development from a precursor, e.g., from silver halide or from couplers for color photography or for diazo processes.

Abstract: A multicolor image-forming method which comprises image-exposing a light-sensitive heat-sensitive recording material having a diazo compound and a coupling component on a support using a positive image followed by developing to form a color image, image-exposing a light-solubilizing color image-forming material having a coloring material on a substantially transparent support using a positive image followed by developing to form a color image, and superposing the light-solubilizing color image-forming material having the color image on the light-sensitive heat-sensitive recording material having the color image or, further, heat-pressing the light-solubilizing color image-forming material having the color image superposed on the light-sensitive heat-sensitive recording material having the color image.

Abstract: A multicolor recording material having on one side of a support at least two layers capable of producing colors different from each other in hue through respective color-producing reactions, which further has an interlayer constituted by a water-soluble polyanionic polymer having gelled through the interaction with a polycation between every adjacent two of said color-producing layers to prevent migration of ingredients from one color-producing layer to another.

Abstract: This invention relates to positive working color proofing sheet construction which, upon exposure to an actinic radiation source through a screened image, can accuratley reprouce 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. The image is produced by forming a composite of a receiver base, diazo or diazide layer, photopolymerizable layer and cover sheet. Upon imagewise exposure, a positive image appears on the receiver base after dry peel apart development.

Abstract: A developing method for printing plates employing waterless offset processes is disclosed. The plates comprise a support coated with a photosensitive layer based on a diazonium salt polycondensation product and a super-imposed ink-repellent, crosslinked silicone elastomer layer, whereby said developer is characterized in that it contains a predominant proportion of compounds of the general formula R--(O--CH.sub.2 --CH.sub.2 --).sub.n --O--R, where R denotes C.sub.m H.sub.2m+1, n denotes an integer from 1 to 25 and m denotes an integer from 1 to 5. The present invention is particularly suitable for developing printing plates where the photosensitive layer comprises a diazonium salt polycondensation product comprising recurrent A--N.sub.

Abstract: A thermodevelopable photo-recording method suitable for making bar-code labels, ID cards and the like, comprising using a thermodevelopable photo-recording material provided with thermodevelopable photo-recording layer containing at least a diazo compound and a coupler, and an electricity modulation type light shutter constructed by minute matrixes which come to be able or inable to transmit light when electric current is passed therethrough, and optionally an optical system for minizing or enlarging the final image, exposing said photo-recording material to light through a temporary image formed in said light shutter by turning on or off the electricity to pass through each of the minute matrixes, then heating said photo-recording material to get a record of the image therein.

Abstract: The present invention is concerned with a printing plate of which image formation is done by photoirradiation, having a front side covered waith a peelable or removable protective layer which contains a photofading material. The printing plate is safe against fogging to light and can be used under ordinary illumination.

Abstract: A photosensitive printing plate for waterless offset printing is described which comprises a support, a photosensitive layer and an overlying, printing ink-repellent silicone rubber layer. The photosensitive layer contains a diazonium salt polycondensation product, a compound which can be polymerized by means of free radicals, preferably a (meth)acrylate, a photopolymerization initiator and optionally a binder. The printing plate has higher photosensitivity than corresponding plates whose photosensitive layer contains only a photopolymerizable mixture or only a diazonium salt polycondensation product.

Abstract: Presensitized sheets for color proofing comprising a removable carrier sheet bearing a photosensitive medium sensitive to radiation within the wavelength band 325 to 700 nm and comprising photohardenable, photoadherent, photoinsolubilisable or photosolubilisable material, the sheet including a removable antihalation layer which is removed either when stripping the carrier sheet or during subsequent processing. The antihalation dyes may be positioned within a transparent carrier sheet, in a layer on the carrier sheet opposite to the photosensitive medium or in a layer positioned between the carrier sheet and light-sensitive medium.

Abstract: A polyester film which is provided with a permanent, antistatic coating on one surface, which coating is obtained by treating the biaxially stretch-oriented and heat-set film with an aqueous dispersion, containing at least one copolyester containing sulfonate groups, and at least one salt derived from an amino acid or a protein hydrolysate and having a diazotype reproduction layer on the opposite surface of the film.

Abstract: A light-sensitive printing plate for waterless planographic printing is disclosed comprising a support, a superimposed light-sensitive layer, an outer, ink-repellent silicone rubber layer, and an inner, ink-repellent silicone layer between the light-sensitive layer and the outer silicone rubber layer, the outer silicone rubber layer having a higher degree of crosslinking than the inner layer. The printing plate is less sensitive to scratching and, at the same time, shows good developability and image resolution.

Abstract: The invention relates to negative photosensitized 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 predict the image quality from a lithographic printing process.

Abstract: This invention relates to water developable, negative working photosensitized 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 predict the image quality from a lithographic printing process. The invention provides both overlay and transfer type proofing sheets which have good fingerprint resistance.

Abstract: A process for forming a photoresist pattern comprises the steps of forming a photoresist layer on an underlying layer, forming a contrast enhancement layer for enhancing the contrast of light entering the photoresist layer on the photoresist layer, selectively exposing the photoresist layer through the contrast enhancement layer to light, and developing the photoresist layer to form a photoresist pattern. The contrast enhancement layer is formed as a layer containing a photobleachable agent and a material soluble in both of a nonpolar organic solvent and an aqueous alkali solution. The material is selected from the group of abietic acid, a derivative thereof, a rosin containing abietic acid as the main component, and a derivative thereof. The contrast enhancement layer is treated and removed simultaneously with development for the photoresist. The stability of a coating solution for the contrast enhancement layer is remarkably high.

Abstract: Particulate organic polymeric beads in the thermal adhesive layer of prepress color proofing elements prevents adhesive blocking without optical interference or reduction in adhesive performance.

Abstract: An improved developer for PMMA electron resist comprising an effective amount of MEK in combination with MIBK or CS alone or a mixture thereof.

Abstract: A polyester film which is provided with a permanent, antistatic coating on one surface, which coating is obtained by treating the biaxially stretch-oriented and heat-set film with an aqueous dispersion, containing at least one copolyester containing sulfonate groups, and at least one salt derived from an amino acid or a protein hydrolysate. The material can be used in the production of diazo duplicating films.

Abstract: A presensitized printing plate suitable for waterless planographic printing is disclosed, which comprises a layer support, a radiation-sensitive layer, an outer, ink-repellent, cross-linked silicone elastomer layer, and an intermediate layer of amorphous silicic acid, by which the adhesion of the silicone elastomer layer to the radiation-sensitive layer is improved. The adhesive layer is physiologically safe and effects a good anchoring of the silicone elastomer layer. The process of making and using the presensitized printing plate are also disclosed.

Abstract: Disclosed is a radiation-sensitive recording material comprising a support, a radiation-sensitive recording layer and a rough covering layer which is applied by spraying and drying a solution which has substantially the same composition as the recording layer. Due to its rough surface, the material provides for accelerated vacuum contact in the copying process. Also disclosed is a process for producing the radiation-sensitive recording material described above.

Abstract: An imaging system in which images are formed by image-wise exposing a layer containing a chromogenic material and a photosensitive composition in which at least the photosensitive composition is encapsulated in a layer of pressure rupturable capsules. Exposure and capsule rupture renders the chromogenic material image-wise accessible to the developer for a patterned image forming reaction.

Abstract: Disclosed is a two-color heat-sensitive recording material which comprises a base sheet and a recording layer of single-layer or multi-layer structure formed on the base sheet, the recording layer comrising:(a) a diazonium salt,(b) a basic leuco dye,(c) a 2-hydroxy-3-naphthoic acid derivative which acts as a coupler compound for causing the diazonium salt to develop color when heated and which also acts as a color developing material for causing the basic leuco dye to develop color when heated, and(d) a basic substance, wherein the diazonium salt and the basic leuco dye each form a color upon application of heat, thereby giving the first image of a mixed color, and, then, after irradiation of an active ray to decompose the diazonium salt, the basic leuco dye alone forms its own color upon application of heat, thereby giving the second image whose color is different from the mixed color of the first image.

Abstract: A dry photosensitive lithographic printing plate has a base, a photosensitive layer formed on the base and a silicone rubber layer formed on the photosensitive layer. The silicone rubber layer is formed from a silicon rubber composition containing an organopolysiloxane and a reactive aromatic aminosilane compound.

Abstract: The disclosed light-sensitive recording material is composed of an electrically conductive support, suitable for the production of printing forms or printed circuits, an a photoconductive layer system containing a photoconductor, a binder, a sensitizing dye and conventional additives. The photoconductive system comprises (A) a single photoconductive layer, or multiple layers, applied to the support and (B) a light-sensitive covering layer which contains at least one photochemically reactive compound. The use of the recording material in a process for the production of printing forms and printed circuits is also disclosed.

Abstract: The invention discloses a drafting material which comprises a plastic support having, on at least one surface, an adhesive layer, a layer of a pigmented or clear lacquer and an antistatic top layer, in which the layer of pigmented or clear lacquer contains a combination of(a) a linear aromatic polyester,(b) a carboxylated acrylate resin,(c) a cyclic acid amide, corresponding to the general formula I ##STR1## wherein R stands for an alkyl group having 1 to 4 carbon atoms, and (d) an acid catalyst.In the drafting material of the invention hardness, and resistance to solvents are improved.

Abstract: A multi-color image forming material which is in the form of multiple layers on a support, and having, at least two photosensitive layers, the farthest layer from the support being the uppermost photosensitive layer, the photosensitive layers being formed from a water-soluble resin having photocrosslinking ability with diazo resin, a photosensitive water-soluble, organic solvent insoluble diazo resin, and a water dispersible coloring agent which can produce a color tone, each photosensitive layer having a coloring agent which can produce a different color tone; and at least one intermediate layer, each intermediate layer being positioned between each photosensitive layer and the next adjacent photosensitive layer, the intermediate layer being formed from a hydrophobic, water-resistant, organic solvent softenable resin.

Abstract: A light-sensitive printing plate for waterless offset printing is comprised of a layer carrier, a light-sensitive layer containing a diazonium salt polycondensation product, and of an ink-repellent crosslinked silicone elastomer layer superimposed on the light-sensitive layer, wherein the diazonium salt polycondensation product comprises recurrent A-N.sub.2 X and B units which are mutually linked by bridge members, preferably methylene groups, derived from carbonyl compounds capable of condensation, A being the radical of an aromatic diazonium compound capable of condensation with formaldehyde and B being the radical of a compound, in particular an aromatic amine, a phenol, a phenol ether, an aromatic thioether, an aromatic hydrocarbon, an aromatic heterocyclic compound or an organic acid amide, that is free of diazonium groups and that is capable of condensation with formaldehyde.

Abstract: A sandblast photoresist laminate article of manufacture comprising an adhesive layer, a membrane support layer, and a resist layer can be used in etching the surface of articles with a pattern which can be revealed by the resist layer. The resist laminate is usable in a variety of modes of etching such as exposing the resist with a pattern, developing the pattern, applying the developed resist to the object, and etching the pattern into the object. Further, the resist can be used by applying the unexposed sheet-like resist to an object, exposing the resist with a pattern, developing the pattern and etching the pattern into the object. Lastly, the resist laminate can be used by exposing the resist with a pattern, applying the exposed resist to an object, developing the pattern, and etching the pattern into the object. The resist compositions are typically water developable after exposure with actinic radiation.

Abstract: This invention relates to negative photosensitized sheet contructions 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 predict the image quality from a lithographic printing process.

Abstract: In a process for reducing halations during the imagewise irradiation of a reproduction layer exposed through a planar image original, at least one lubricant either is contained in the layer or is interposed between the layer and the image original. Suitable lubricants include organic polysiloxanes, hydrocarbon polymers, polyaryl esters, and alkanoic acids or alkenoic acids having at least 9 carbon atoms. Excluded are lubricants comprising copolymers of dimethyl dichlorosilane, ethylene oxide and propylene oxide, provided they are located in the reproduction layer.

Abstract: A diazotype sheet is developable solely by heat, the sheet comprising in at least one layer a heat-softenable, organic solvent-soluble resin, an acid-stabilized diazonium salt, at least one azo-coupler compound capable of reacting to form a dye, and an acid neutralizing component immobilized either by encapsulation or by coating as a separate layer with or without a binder. The sheet has incorporated therein at least one plasticizer which is either liquid at room temperature (i.e., 20.degree. to 25.degree. C.) or fusible at a temperature between room temperature and the development temperature.

Abstract: A light-sensitive planographic printing plate comprising a layer of a photo-polymerizable composition provided on at least one side of a base, wherein said photo-polymerizable composition comprises:(A) a polymer having at least one group represented by the general formula (I) ##STR1## wherein R.sub.1 to R.sub.5 each represent a member selected from the group consisting of a hydrogen atom, a halgen atom, a carboxyl group, a sulfo group, a nitro group, a cyano group, an amido group, an amino group and a substituted or unsubstituted alkyl group, aryl group, alkoxy gruop, aryloxy group, alkylamino group, arylamino group, alkylsulfonyl group and arylsulfonyl group and Z represents an oxygen atom, a sulfur atom, NH or NR, wherein R represents an alkyl group; and a carboxyl group on the side chain;(B) a monomer or oligomer having at least two polymerizable ethylenically unsaturated double bonds;(C) a photo-polymerization initiator, and(D) a diazo resin.

Abstract: A radiation-curable composition suitable for use as a protective coating for a photographic element comprises a polymerizable acrylic compound, a polymerizable epoxy-functional silane compound, a free-radical photoinitiator capable of initiating polymerization of said acrylic compound, and 0 to 2 percent of the total composition on a weight basis of a cationic photoinitiator capable of initiating polymerization of said epoxy-functional silane compound, said composition containing epoxy functionality only in a silane compound.

Abstract: A light-sensitive color-proofing sheet is described for producing an image on various substrates. A light-sensitive continuous color layer is releasably attached to a carrier. Overlaying the color layer is a water-insoluble transparent colorless barrier layer. On the opposite surface of the barrier layer is a thermally laminable adhesive layer. Upon lamination of the sheet to a substrate, removal of the carrier and exposure to actinic radiation, the color layer is formed into an image, photomechanically, by removal of the non-image areas.

Abstract: A heat-sensitive recording material comprising a substrate and a heat-sensitive recording layer thereon, the heat-sensitive recording layer containing a diazonium salt, coupler compound, heat-fusible basic compound and at least one of the compounds represented by the formula [I] below ##STR1## wherein X is --O-- or --CONH--, R.sub.1 and R.sub.2 are each hydrogen, halogen, alkyl having 1 to 8 carbon atoms, cycloalkyl, aryl, aralkyl or alkoxyl and n is an integer of 1 to 10.

Abstract: A light-sensitive color proofing sheet is described for producing an image on various substrates. A light-sensitive continuous color layer is releasably attached to a carrier. Overlying the color layer is a water-insoluble transparent colorless barrier layer. On the opposite surface of the barrier layer is a thermally laminable adhesive layer. Upon lamination of the sheet to a substrate, removal of the carrier and exposure to actinic radiation, the color layer is formed into an image, photomechanically, by removal of the non-image areas.

Abstract: This invention relates to negative photosensitized 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 predict the image quality from a lithographic printing process.