Abstract: A non-corrosive photoresist stripping composition containing:(a) 85-10% by weight of an organic polar solvent having a dipole moment of more than 3.5;(b) 10-40% by weight of selected amine compounds;(c) 5-30% by weight of selected amino acid having a hydroxyl group; and, optionally,(d) 0-20% by weight water.

Abstract: A photosensitive recording element comprises(A) a dimensionally stable substrate,(B) a photopolymerizable relief-forming recording layer and, if required, an adhesion-promoting layer arranged between (A) and (B), a release layer (C) applied to that side of the recording layer (B) which faces away from the substrate (A), and, if required, a cover sheet (D) applied thereon, the photopolymerizable relief-forming recording layer (B) containingb.sub.1) at least one polymeric binder,b.sub.2) at least one photopolymerizable olefinically unsaturated monomer which is compatible with b.sub.1),b.sub.3) at least one photopolymerization initiator andb.sub.4) at least one aryl alkyl ketone,and is suitable for the production of relief printing plates.

Abstract: A system for the preparation of a light-sensitive material comprising a substrate, a light-sensitive layer and a base film which comprises a roller for providing a continuous light-sensitive sheet comprising the base film, the light-sensitive layer and a protective film; means for cutting the light-sensitive layer and protective layer in the traverse direction; fixing means for temporarily fixing the sheet; a roller for providing an adhesive tape for removing the protective film; the adhesive tape-collecting roller; a bar for pressing the adhesive tape by its tip to the front end of the light-sensitive sheet and to press the front end against the bottom of the fixing means and peeling the protective film from the sheet; a dancer roll; light-sensitive sheet cutting means; substrate supplying means; and heat rollers for laminating the base film and light-sensitive layer on the. substrate.

Abstract: An element comprising, in order: (a) a removable substrate; (b) a transparent, nonphotosensitive, polymeric layer having a thickness of less than about 0.002 cm and a gloss of 45-70; said polymeric layer consisting essentially of at least one thermoplastic polymer having an elongation at break of greater than 30%, a glass transition temperature of 35.degree.-70.degree. C.; and (c) an elastomeric layer and optionally an additional, different removable substrate (d) adjacent to the elastomeric layer, wherein the polymeric layer exhibits improved adhesion to the removable substrate (a) when removable substrate (d) is removed is described.

Abstract: A process for laminating a photosensitive-layer which includes providing (A) a base having a laminating region and a non-laminating region, and (B) a support having thereon, in order, a photosensitive layer and a protective film, where part of the protective film corresponds to the laminating region and part of the protective film corresponds to the non-laminating region, removing the part of the protective film which corresponds to the laminating region from the photosensitive layer such that the photosensitive layer can be laminated to the base in the laminating region, feeding the base and the support having thereon the photosensitive layer from which protective film has been removed to a nip between a pair of heated pressure rollers, passing the base and photosensitive-layer-covered support forward through the rollers while the base and photosensitive-layer-covered support are being nipped and hot-pressed by the rollers, with the photosensitive layer being in contact with the laminating region of the base

Abstract: The present invention provides an imaging element comprising a support, a porous layer, a photosensitive layer containing a photopolymerizable composition and optionally a stripping layer characterized in that there is provided a barrier layer between said photosensitive layer and said porous layer said barrier layer being impermeable for the photopolymerizable composition at ambient temperature and capable of increasing its permeability with increasing temperature.

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

Abstract: A slide blank comprises a support; a mask layer having a substantially transparent central portion and a non-transparent peripheral portion surrounding the central portion; and an imageable layer which is not substantially photosensitive but is imageable to form an image which can be viewed in transmission. The support, mask layer and imageable layer are secured together so that the support and the imageable layer extend across essentially the entire transparent central portion of the mask layer, at least the portion of the support adjacent the central portion of the mask layer being substantially transparent. This slide blank can be imaged to produce a ready-mounted slide.

Abstract: A photosensitive transfer material comprises a temporary substrate having provided thereon an alkali-soluble thermoplastic resin layer, an intermediate layer, and a photosensitive resin layer in this order, the interlaminar adhesion in the transfer material being the smallest at the interface between the thermoplastic resin layer and the temporary substrate. The photosensitive resin layer can be transferred to a permanent substrate without involving failure due to fine dust, air bubbles or unevenness of the permanent substrate. An image can be formed with the transfer material by adhering the transfer material to a permanent substrate at least under heat and, after stripping the temporary substrate, imagewise exposing the photosensitive resin layer to light, and processing the transferred layers to develop the photosensitive resin layer.

Abstract: A process is described for trans-laminating an image-carrying sheet from a first laminated product, comprising the image-carrying sheet, an adhesive layer and a release sheet, to a second laminated product, comprising the image-carrying sheet, the adhesive layer and an ultimate support sheet.

Abstract: A photosensitive transfer material comprises a temporary substrate having provided thereon an alkali-soluble thermoplastic resin layer, an intermediate layer, and a photosensitive resin layer in this order, the interlaminar adhesion in the transfer material being the smallest at the interface between the thermoplastic resin layer and the temporary substrate. The photosensitive resin layer can be transferred to a permanent substrate without involving failure due to fine dust, air bubbles or unevenness of the permanent substrate. An image can be formed with the transfer material by adhering the transfer material to a permanent substrate at least under heat and, after stripping the temporary substrate, imagewise exposing the photosensitive resin layer to light, and processing the transferred layers to develop the photosensitive resin layer.

Abstract: A thermally imageable laminar composite comprising a pair of opposed sheets confining therebetween a frangible layer of image-forming substance partitionable to the respective sheets on separation of the sheets after thermal imaging is protected against premature stress-induced delamination by the heat bonding of the opposed sheets to one another through said image-forming substance at the periphery of said composite, said bonding being at a strength substantially greater than that required to separate said sheets in the expansive thermally imageable region confined by said periphery. A method for preparing individual units of an imageable composite, including the steps of establishing a band-like heated zone in a supply web of laminate, corresponding to the boundaries of a unit to be cut therefrom, and cutting a unit from within said band-like zone is described.

Abstract: A photosensitive transfer sheet layered a releasable colored photosensitive layer comprising modified poly(vinyl alcohol) of either of following general formulae and adhesive and a heat-seal layer provided in turn on a supporter is disclosed, ##STR1## wherein R.sub.1 and R.sub.2 denote hydrogen atoms or alkyl groups independently one another, Y.sup.- denotes a conjugated chlorinic ion of acid, m denotes an integer of 1 to 6, and n denotes 0 or 1), thereby providing a multicolor image-forming material for obtaining high-precision prepress color proof being excellent in the preservability, possible to handle in a light room, water-developable and excellent in the registering accuracy as well.

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. One of the first and second layers of adhesive comprises a polymeric hardenable adhesive comprising a macromolecular organic binder having amino or substituted amino groups, and a photopolymerizable monomer.

Abstract: Process and material for controlling the visual aspect of an image present in a hydrophilic colloid layer, layer system, or relief pattern on a permanent support by transferring a continuous non-photosensitive layer assembly from a temporary support to said image, said transfer being brought about by pre-wetting the image-carrying permanent support, bringing the pre-wet image-carrying permanent support in face-to-face contact with said continuous non-photosensitive layer assembly carried by said temporary support, stripping off the temporary support to leave said continuous non-photosensitive layer assembly covering and adhering to said image-carrying permanent support, and drying the resulting layer packet, wherein said continuous non-photosensitive layer assembly comprises in the given sequence a polyester layer having sufficient adhesiveness to said temporary support to remain adhering thereto before being stripped therefrom and yet having sufficient repellency in respect of said temporary support to make

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

Abstract: Disclosed is an image forming process employing a light-sensitive image forming material and a developing solution. The image forming material comprises a support, a peel layer and a light-sensitive resin layer containing a pigment having an anionic group, superposed in order. The process comprises the steps of imagewise exposing the image forming material to light and developing the material by the use of a developing solution having a polymer having the following recurring unit (A): ##STR1## such as poly(N-vinylpyrrolidone) to form an image on the peel layer.

Abstract: The objects of the invention are generally accomplished by a method of delaminating imaging materials comprising providing an imaging material comprising donor and receiver elements, heating said imaging material, applying opposed forces to said donor and receiver elements to separate said imaging material into donor and receiver elements, and accumulating the separated donor element. In a preferred method one or both of said opposed forces is vacuum and when the vacuum is released from said donor element, accumulating takes place by spooling after separation.The apparatus for delamination of imaging materials comprises means for applying heat and pressure to said imaging material, means to apply a separating force to at least one of said donor element and receiver element forming said imaging material and means to separate said donor element and said receiver element.

Abstract: Featured for removing the cover sheet from a dry film laminated on a board is the combination of a knurling wheel action and an air blowing injector which work together in a single stroke to separate the cover sheet from the edge of the dry film, with which combination a sucking roll is provided in cooperative relation, and which, upon touching the surface of the board, starts to rotate whereby the cover sheet, already separated in an area thereof from the dry film, is sucked and peeled from the dry film by the sucking roll and with continued rotation of the sucking roll is removed in its entirety from the dry film.

Abstract: The present invention provides a heat recording material comprising on a support in the order given a porous layer of an image forming substance, a substance capable of converting radiation into heat, a thermoplastic layer containing a photocurable composition and a stripping layer. The present invention further provides a method for obtaining an image with such an heat recording material. Images of high quality and good wear and scratch resistance are obtained.

Abstract: An optical disk die is manufacture from a laminated disk which includes a substrate, an overlying heat sensitive layer, a reflective layer, and a final output protective layer. A laser beam forms micro-pits in the heat sensitive layer. These micro-pits become exposed after removal of the protective and reflective layers. A thin metallic coating is deposited over the surface of the pitted heat sensitive layer wherein the contours of the micro-pits are followed. A thicker second metallic layer is deposited over the first metallic layer and has an interface with the first metallic layer which duplicates a pattern of the micro-pits. Finally, the deposited second layer is separated from the remainder of the laminated disk thereby forming a die having the micro-pit pattern therein.

Abstract: The present invention provides an imaging element comprising a support, a porous layer, a photosensitive layer containing a photopolymerizable composition and optionally a stripping layer characterized in that there is provided a barrier layer between said photosensitive layer and said porous layer said barrier layer being impermeable for the photopolymerizable composition at ambient temperature and capable of increasing its permeability with increasing temperature.

Abstract: Addition of non-nitrogen containing weak acids to amine-containing alkaline strippers for photoresists produce stripper compositions able to strip highly cross-linked or hardened photoresist films without producing any substantial metal corrosion. Weak acids useful in the stripping compositions include those having a pK in aqueous solution of 2.0 or higher and an equivalent weight of less than about 140 and are employed in an amount to neutralize from about 19% to about 75% of the amine present in the stripper composition.

Abstract: A thermal dye transfer process, and intermediate receiver used therein, for obtaining a color image which is used to represent a printed color image obtained from a printing press comprising (a) forming a thermal dye transfer image in a polymeric dye image-receiving layer of an intermediate dye-receiving element comprising a support having thereon said dye image-receiving layer by imagewise-heating a dye-donor element and transferring a dye image to the dye image-receiving layer, (b) adhering the dye image-receiving layer to a surface of a final receiver element by heat laminating the intermediate dye receiving element to the final receiver element, and (c) stripping the intermediate dye receiving element support from the dye image-receiving layer, wherein the intermediate dye receiving element further comprises a cushion layer between the support and the dye image-receiving layer, the shear modulus of the cushion layer being less than the shear modulus of the support and less than ten times the shear modulus

Abstract: A layer transfer material which comprises a temporary support, a light-sensitive resin layer and a separation layer interposed between the temporary support and the light-sensitive resin layer, wherein the separation layer has a low oxygen permeability and a softening point of 80.degree. C. or below and is easily separable from the temporary support and a method of its use.

Abstract: The objects of the invention are generally accomplished by a method of delaminating imaging materials comprising providing an imaging material comprising donor and receiver elements, heating said imaging material, applying opposed forces to said donor and receiver elements to separate said imaging material into donor and receiver elements, and accumulating the separated donor element. In a preferred method one or both of said opposed forces is vacuum and when the vacuum is released from said donor element, accumulating takes place by spooling after separation.The apparatus for delamination of imaging materials comprises means for applying heat and pressure to said imaging material, means to apply a separating force to at least one of said donor element and receiver element forming said imaging material and means to separate said donor element and said receiver element.

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 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. One of the first and second layers of adhesive comprises a polymeric hardenable adhesive comprising a macromolecular organic binder having amino or substituted amino groups, and a photopolymerizable monomer.

Abstract: A process for forming a color image which may be used to represent a printed color image to be obtained from a printing press comprising (a) forming a thermal dye transfer image in a polymeric dye image-receiving layer of an intermediate dye-receiving element by imagewise-heating a dye-donor element and transferring a dye image to the dye image-receiving layer, (b) laminating a polymeric dye-migration barrier layer to the imaged dye image-receiving layer, and (c) laminating the dye-migration barrier layer and imaged dye image-receiving layer together to the surface of a paper substrate. By applying a dye-migration barrier layer to the imaged dye image-receiving layer and subsequently laminating both layers to the paper substrate together, the final paper substrate is subjected to only a single lamination step, and wrinkles caused by multiple laminations can be virtually eliminated.

Abstract: Method for making lithographic aluminum offset printing plates according to the DTR-process by photo-exposing a photosensitive monosheet layer assemblage comprising a hydrophilic aluminum foil, an intermediate layer comprising hydrophobic polymer beads prepared by polymerization of ethylenically unsaturated monomer(s) and having an average diameter not lower than 0.2 .mu.m, and a silver halide emulsion layer, applying an aqueous alkaline solution to the photo-exposed silver halide emulsion layer in the presence of a developing agent and a silver halide solvent to form a silver image and to allow unreduced silver halide or complexes formed thereof to diffuse imagewise from the developed silver halide emulsion layer to said aluminum foil to produce thereon a silver image, and separating said emulsion layer and said intermediate layer from the imaged aluminum foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.

Abstract: A method for laser engraving photopolymer printing plates is provided. Prior to the laser engraving step (30), the photopolymer material is totally cured, followed by removal of a release layer disposed on the material. The laser engraving step (30) which follows removal of the release layer produces a plurality of tacky particulates (120) which adhere to the surface layer of the photopolymer material (100) adjacent the ablated regions (110). The particulates (120) are removed in a solvent washing step (40) to provide clean sharp edges (115) adjacent the ablated regions (110). Subsequent to removal of the photopolymer residue (120) the engraved printing plate is finished, by either chemical or light finishing methods.

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 thermal developing type photosensitive pressure sensitive recording medium records an image and transfers the image onto an image receiving medium. The image recording medium includes a substrate, microcapsules and binder. The microcapsules are formed on the substrate, and encapsulate therein dye and polymerizable compound. A latent image is formed in a combination of the microcapsules by changing mechanical strength thereof upon photopolymerization of the polymerizable compound for forming cured and non-cured microcapsules. The dye flows out of the non-cured microcapsules and is transferred onto an image receiving layer by rupturing the non-cured microcapsules upon pressure application. The binder fixes the microcapsules onto the substrate. The binder contains a pressure sensitive adhesive agent.

Abstract: An image transfer type recording method and kits for forming images on a receiving medium stably adheres a developer layer to any type of image receiving medium, such as, for example, plain paper, cloths, plastic films or the like. According to an image transfer type recording method, the image formation layer and the image receiving medium are adhered to each other by an adhesive layer. Therefore, the image formation layer can be stably adhered to any type of image receiving medium The image formation layer is adhered to the image receiving medium while being sandwiched between a thermoplastic resin layer and the adhesive layer. Therefore, the color of the image formed on the image formation layer is not faded or reduced in brightness, even if the image is formed on media made from cloth and such media on which the image is formed is washed.

Abstract: This invention provides an improved negative-working or positive-working, single sheet color proofing method which can accurately reproduce images by using colored, photosensitive layers on substrates which are then overcoated with partially developable adhesive layers. The final construction is useful in predicting the image quality from a lithographic printing process. The partial removal of the adhesive layers cleans out any background stain which may remain from the incomplete removal of the photosensitive layer.

Abstract: The present invention relates to an image recording method utilizing photosensitive microcapsules. These photosensitive microcapsules have characteristics of being rendered hardenable upon exposure. Further, only the hardenable photosensitive microcapsules can be hardened. In this image recording method, an optional image pattern is initially exposed to a photosensitive recording medium having thereon the photosensitive microcapsules for rendering only the exposed photosensitive microcapsules hardenable corresponding to the image pattern. Subsequently, the exposed photosensitive recording medium is heated to harden only the hardenable photosensitive microcapsules. Further, the photosensitive recording medium is entirely exposed again with light to render the unhardened photosensitive microcapsules hardenable.

Abstract: Method for making lithographic aluminium offset printing plates according to the DTR-process by photo-exposing a photosensitive monosheet layer assemblage comprising a hydrophilic aluminium foil, a water-swellable intermediate layer comprising a non-proteinic hydrophilic film-forming polymer, and a silver halide emulsion layer, applying an aqueous alkaline solution thereto in the presence of a developing agent and a silver halide solvent, allowing to reduce the photo-exposed silver halide, allowing the unreduced silver halide or complexes thereof to diffuse to said aluminium foil to form a silver image thereon, and separating said emulsion layer and said intermediate layer from the imaged aluminium foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.

Abstract: A method for forming an image is described which includes bringing a transparent heat-sensitive recording material including a transparent support made of a synthetic polymer having thereon a transparent heat-sensitive recording layer into contact with a light-absorbing material, at least at the time of effecting recording, and irradiating the light-absorbing material with a laser beam to heat the transparent heat-sensitive recording layer and to cause color formation therein. High speed, high density, and high quality recording can be performed with an increased light absorption efficiency.

Abstract: An image transfer type recording method for forming a visible image on a developer medium comprising a base sheet, a thermoplastic resin layer, and a developer material layer which is color-reactable with a chromogenic material laminated in this order, and transferring the visible image on the developer medium to any type of image supporting medium, comprising the steps of forming the visible image on the developer material layer through a color-reaction between the developer material and the chromogenic material, providing an adhesive layer on the developer material layer, superposing the developer material layer and the image supporting medium under pressure and heat to fixedly transfer the developer material layer having the visible image thereon to the image supporting medium, and peeling off only the substrate of the developer medium.

Abstract: A light-sensitive transfer material is disclosed, which comprises a substantially transparent support; a physical development nucleus layer for diffusion transfer process using silver halide emulsion on one side of said support; and a release layer and, a color material layer containing a dye or a pigment and a photoresist layer, or a photoresist layer containing a dye or a pigment, sequentially on the side of said support opposite from said physical development nucleus layer. An image-forming method employing this light-sensitive transfer material is also disclosed.Further, a light-sensitive transfer material is disclosed, which comprises a substantially transparent support; a light-sensitive silver halide emulsion layer; and a release layer and, a color material layer containing a dye or a pigment and a photoresist layer, or a photoresist layer containing a dye or pigment, sequentially on the side of said support opposite from said physical development nucleus layer.

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 thermally exposed laminate is passed between the nip of a pair of peel and pressure rollers toward a pair of tab and deflector rollers which are movable through an arcuate path, such that, the tab roller initiates separation of the disposable sheet from the retained sheet and pulls the disposable sheet between the driven tab and peel rollers, while the retained sheet is contacted by the deflector roller for bending of the sheet around the pressure roller. The disposable and retained sheets are traversed through divergent paths, respectively to waste and to the next processing stage.

Abstract: Apparatus and method for delaminating a composite sheet structure of the kind comprising a vertically frangible layer having a first surface adhesively bonded to a first sheet at a substantially uniform strength and an opposite surface abutting areas which are, respectively, adhesively bonded to a second sheet at strengths less or greater than the uniform strength and having a marginal portion or tab extending beyond the first sheet. The composite sheet structure is fed into the nip of upper and lower peel rollers and upon passage therethrough a strip sheet roller is rotated into position to bend and hold the laminate against the upper peel roller in a position to fracture the tab from the first sheet. On reversal of the feed direction and passage of the laminate back through the nip of the strip sheet and upper peel roller, the thicker "keeper sheet" of the flexed laminate breaks from the "throw-away" sheet containing the tab, at the preformed tab.

Abstract: A novel laminar sheet structure having at least two sheets of different stiffnesses in releasably adhering engagement with each other, the sheet of the lesser stiffness having a marginal portion extending beyond on adjacent margin of the sheet with the greater stiffness.Also disclosed is an apparatus for delaminating the laminar sheet structure having at least one rotatably mounted roller with an axial slot in its peripheral surface for receiving the marginal portion of the sheet of lesser stiffness so that the sheet may be wound upon the roller while the sheet of greater stiffness is separated therefrom, and a method of delaminating the structure by the apparatus.

Abstract: The invention is generally accomplished by a method wherein a dry photographic image is formed in an imaging-forming donor layer. The formed image is allowed to diffuse to a receiver layer. A dry acceptor layer is brought into contact with the image-forming layer and then separated such that the image-forming layer is adhered to the acceptor layer. It is preferred that the contact of the acceptor layer and the image-forming layer is under heat and pressure and the preferred material for both layers is dry gelatin.

Abstract: An optical or magneto-optical recording card is produced using a transfer type optical or magneto-optical recording medium. The transfer type optical or magneto-optical recording medium comprises a base film, a peeling layer, an optical or magneto-optical recording layer and a light permeable adhesive layer which are successively superimposed one above another to constitute a layered structure. A protective layer is adhered to the transfer type optical or magneto-optical recording medium with the aid of an adhesive layer and the base film is then peeled off together with the peeling layer. Next, the protective layer to which the optical or magneto-optical recording layer is adhered is adhesively attached to a card base in such a manner that the optical or magneto-optical recording layer is interposed therebetween whereby an optical or magneto-optical recording card is completely produced. The transfer type recording medium can be preserved in such a state that it is wound about a reel.

Abstract: This invention relates to positive working resist compositions having utility in dry film photoresists and to fully aqueous methods for developing and stripping them.

Abstract: Apparatus and method for delaminating a composite sheet structure of the kind comprising a vertically frangible layer having a first surface adhesively bonded to a first sheet at a substantially uniform strength and an opposite surface abutting areas which are, respectively, adhesively bonded to a second sheet at strengths less or greater than the uniform strength and having a marginal portion or tab extending beyond the first sheet. The composite sheet structure is fed into the nip of upper and lower peel rollers and upon passage therethrough a strip sheet roller is rotated into position to bend and hold the laminate against the upper peel roller in a position to fracture the tab from the first sheet. On reversal of the feed direction and passage of the laminate back through the nip of the strip sheet and upper peel rollers, the thicker "keeper sheet" of the flexed laminate breaks from the "throw-away" sheet containing the tab, at the preformed tab.

Abstract: An optical recording card is produced using a transfer type optical recording medium. The transfer type optical recording medium comprises a base film, a peeling layer, an optical recording layer and a light permeable adhesive layer which are successively superimposed one above another to constitute a layered structure. A protective layer is adhered to the transfer type optical recording medium with the aid of an adhesive layer and the base film is then peeled off together with the peeling layer. Next, the protective layer to which the optical recording layer is adhered is adhesively attached to a card base in such a manner that the optical recording layer is interposed therebetween whereby an optical recording card is completely produced. The transfer type recording medium can be preserved in such a state that it is wound about a reel. Accordingly, the transfer type recording medium is adhered to the protective layer when the optical recording card is produced, and thereafter it is adhered to the card base.