Stripping Process Or Element Patents (Class 430/256)
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Patent number: 5093168Abstract: An image-receiving sheet element comprising an image-receiving layer provided on a flexible substrate and a removable cover sheet, wherein said cover sheet comprises a low density copolymer containing 30% by weight or more of a linear polyethylene, is described. This image-receiving sheet element shows improved slip properties and a good workability, and little deterioration in transfer properties upon prolonged storage. Furthermore, it scarcely suffers from any caused by static electricity when the cover sheet is peeled off from the image-receiving sheet.Type: GrantFiled: September 28, 1990Date of Patent: March 3, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Tamotsu Suzuki, Tomizo Namiki, Masashi Katayama
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Patent number: 5071728Abstract: An imaging method capable of producing high-resolution full color images on substrates such as flexible plastics sheets to form weatherable signs for exterior display, the method comprising:(a) providing a plurality of carrier sheets, each comprising a flexible base material having on one surface thereof a strippable resin layer;(b) imaging each carrier sheet by passage through an electrophotographic copying apparatus so that a toner image corresponding to a section of a desired image is deposited and fused on said strippable resin layer of each sheet;(c) adhesively bonding the side of each carrier sheet bearing said toner image to a first substrate, each carrier sheet being positioned such that the desired image is formed from the arrangement of the imaged carrier sheets;(d) stripping from the composite comprising the first substrate, toner image and resin layer, the flexible base material of each carrier sheet, and,(e) adhesively bonding a second substrate to said resin layer,wherein at least one of the firType: GrantFiled: October 2, 1990Date of Patent: December 10, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventor: Ronald E. Watts
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Patent number: 5068165Abstract: 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-protenic 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 image aluminium foil. The invention also relates to the photosensitive monosheet layer assemblage used for making such printing plates.Type: GrantFiled: July 16, 1990Date of Patent: November 26, 1991Assignee: AGFA-Gevaert, N.V.Inventors: Paul J. Coppens, Ludovicus H. Vervloet, Luc H. Leenders, Ronald Schuerwegen
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Patent number: 5068166Abstract: A method of producing a self-supporting film carrying a positive photographic image is provided, comprising splitting an image-carrying positive photographic film in a manner known per se and removing remaining adhering paper residues from the image part and using the so obtained image part as the self-supporting film having thickness of less than 50 .mu.m. Also embodiments are shown for carrying out this process continuously.Type: GrantFiled: November 16, 1989Date of Patent: November 26, 1991Inventor: Boogaards-KoHenriette S.
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Patent number: 5059509Abstract: An improvement in a multicolor image-forming method and a multicolor image-forming material applied to the same, employing a heat transfer photosensitive material comprising a transparent substrate, a colored layer which is soluble in water but insolubilizable by light, and a heat-fusible and bondable intermediate layer therebetween.Type: GrantFiled: April 1, 1991Date of Patent: October 22, 1991Assignee: Sanyo-Kokusaku Pulp Co., Ltd.Inventors: Hisashi Mino, Takeshi Iijima, Kuniaki Monden
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Patent number: 5053313Abstract: The method and means for carrying out pre-press color proofing processes for color press printing, wherein at least one photosensitive film is laminated onto a sample of the paper intended to be used for the final press printing, which sample has been removably applied to a shape-stable and dimensionally stable support, exposed to light, and colored with a dry toner, characterized in that an interlayer which can be stripped from the support without damage has been applied in advance on the reverse side of the paper intended to be used for the final press printing.Type: GrantFiled: September 14, 1989Date of Patent: October 1, 1991Assignee: E. I. du Pont de Nemours CompanyInventor: Carlfried W. Osenegg
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Patent number: 5047340Abstract: The invention relates to novel, transformed strains of Lac.sup.+ Saccharomyces cerevisiae, capable of utilizing lactose as a sole carbon source, produced by inserting into the Saccharomyces cerevisiae a plasmid containing a lactose permease and a beta-galactosidase gene derived from Kluyveromyces lactis yeast.Type: GrantFiled: October 18, 1988Date of Patent: September 10, 1991Assignee: The University of Kentucky Research FoundationInventors: Robert C. Dickson, Kotikanyadanam K. Sreekrishna
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Patent number: 5045392Abstract: Sheet material including a cellulose acetate temporary support carrying thereon a continuous strippable layer. The strippable layer is a non-photosensitive layer containing a coverage of at most 20 g/m.sup.2 gelatin hardened to a degree corresponding to the addition of at least 0.001 g of formaldehyde per g of gelatin. Transfer of the strippable layer from the temporary support onto an image material having e.g. an imaged hydrophilic colloid layer or relief pattern given improved gloss control and optical dot gain control for such image material.Type: GrantFiled: February 9, 1990Date of Patent: September 3, 1991Assignee: Agfa-Gevaert, N.V.Inventors: Eddie R. Daems, Luc H. Leenders
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Patent number: 5043247Abstract: A process for forming a line art of halftone multicolor colloid pattern involves the contact exposure in registration of different colored silver halide emulsion hydrophilic colloid layers each on a temporary support and the hardening development of the individual exposed silver halide emulsion layers in turn after each is transferred to a common intermediate support to form thereon a multi-layer assembly of reverse reading color relief images on top of each other. This assembly together with an underlying stripping layer from the intermediate support is transferred bodily onto a permanent support by adherence to an adhesive layer carried on the latter support to form thereon a right-reading multicolor image that may serve as a color proof.Type: GrantFiled: March 26, 1990Date of Patent: August 27, 1991Assignee: Agfa Gevaert, N.V.Inventors: Eddie R. Daems, Luc H. Leenders
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Patent number: 5017455Abstract: A process for recovering a support from a photographic film is disclosed. The photographic film comprises the support and an undercoating layer provided thereon. The support is made of cellulose triacetate film base. The undercoating layer contains gelatin and cellulose nitrate. According to the present invention, the process comprises the steps of: (I) treating the photographic film with an aqueous solution of a surfactant; and then (II) treating the photographic film with an aqueous solution of a protease to remove the undercoating layer from the support. The aqueous solution of the protease used at the step of (II) preferably further contains an anionic surfactant. It is also preferred that the process further contains the step of (III) treating the recovered support with an aqueous solution of hydrogen peroxide to bleach the support.Type: GrantFiled: April 11, 1990Date of Patent: May 21, 1991Assignees: Fuji Photo Film Co., Panac-Industries Inc.Inventors: Goichi Hayashi, Sajuro Fujimagari, Kensaku Nakamura, Ryuichi Ishida
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Patent number: 5015557Abstract: A method for coating a printing screen with a sealer to avoid pinholing and damage to the screen from extended use. The method includes coating the inside of the screen with a photo emulsion, exposing the emulsion to the image to be printed, and etching out the exposed screen. Next, applying to the outside surface of the etched out screen a sheet of easy removable pressure sensitive vinyl, and next treating the etched out screen with a sealing composition, which provides a protective barrier for that part of the screen that prevents ink from printing. The sealing composition is advantageously a two part epoxy resin or an air-moisture curing urethane polymer.Type: GrantFiled: September 14, 1989Date of Patent: May 14, 1991Inventor: Ralph G. Mais
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Patent number: 5011754Abstract: A novel decorating pigment-transfer sheet 1 utilizing at least one photosensitive resin layer 3 and at least one pigment layer deposited thereon is provided for decorating heat-resistant articles 7 such as ceramics. The transfer sheet 1 comprises a water-absorbing substrate sheet 2; a water soluble paste layer 5 placed thereon; at least one and normally three photosensitive resin layers 3 placed thereon, each resin layer 3 having adhesive dot photo-images 3c produced by irradiating the resin layer 3 through a photographic dotted film 6; and at least one and normally three glaze-containing pigment layers (a, b, c) deposited on the adhesive dot images 3c of each resin layer 3. The three pigment layers (a,b,c) normally comprise each pigment of three primary colors, respectively. The heat-resistant article 7 is decorated by soaking the transfer sheet 1 in water, removing the substrate sheet 2, transferring the resin/pigment layers onto the article surface, followed by firing.Type: GrantFiled: April 24, 1990Date of Patent: April 30, 1991Assignee: INAX CorporationInventor: Masayuki Ono
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Patent number: 5004668Abstract: An image-receiving sheet material which is used in a transfer image-formation process comprising: (A) transferring an image formed on an image-forming layer of a transferable and light-sensitive material onto an image-receiving sheet material, and then (B) retransferring the image from the image-receiving sheet material onto a permanent support, wherein the image-receiving sheet material comprises: (1) a support, and (2) provided thereon an image-receiving layer which comprises at least two layers each comprising a composition containing an organic high polymer, wherein at least one of at least two layers of the image-receiving layer is to be transferred onto the permanent support and which contains a matting agent comprising a composite three-dimensional resin particles prepared by a process comprising at least: (a) emulsion-polymerizing a polyfunctional monomer having at least two unsaturated groups differing in copolymerizability from each other with a polymerizable monomer containing a cross-linkable monoType: GrantFiled: March 16, 1990Date of Patent: April 2, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Tomizo Namiki, Tamotsu Suzuki, Masashi Katayama
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Patent number: 5001036Abstract: This invention relates to a peel-apart photosensitive element comprising a strippable coversheet, a photorelease layer, a photohardenable layer, an elastomeric layer, and a support, which is useful in a variety of image reproduction processes.Type: GrantFiled: May 30, 1989Date of Patent: March 19, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: John H. Choi
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Patent number: 5000816Abstract: A thin film peeling apparatus in which a portion of a thin film adhered to a base plate is initially lifted and subsequently peeled therefrom. The film peeling apparatus includes a conveying device for conveying the base plate along a base plate conveyance path, a first thin film conveyance device for conveying the lifted portion of the thin film and a second thin film conveyance device for subsequently conveying the thin film. The first thin film conveyance device is disposed so that the thin film is peeled in a direction substantially perpendicular to the direction of conveyance of the base plate. The second thin film conveyance device includes at least one fluid ejector for ejecting fluid against the thin film such that the thin film is conveyed in a direction parallel to the surface of the base plate and substantially perpendicular to the direction of conveyance of the base plate.Type: GrantFiled: April 25, 1989Date of Patent: March 19, 1991Assignee: Somar CorporationInventors: Mitsuhiro Seki, Shigeo Sumi
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Patent number: 4977061Abstract: A card, or a seal, with a picture includes a sheet with an image transferred to an image receiving layer coated on a transparent sheet in a heat-transferring manner, and a sheet-like base material to which the image receiving layer is to be attached with an adhesive layer.The card or the seal is made by a method which includes the steps of forming a mirror image of an original in the photosensitive layer of a photosensitive material superposing the sheet formed with the image on an image receiving layer of an image receiving sheet so as to superpose the photosensitive layer on and adhere the photosensitive layer to an image receiving layer of the image receiving sheet, and heat-developing and heat transferring the image in the photosensitive layer onto the image receiving layer.Type: GrantFiled: August 18, 1989Date of Patent: December 11, 1990Assignee: Fuji Photo Film Co., Ltd.Inventor: Yoshimi Suganuma
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Patent number: 4935331Abstract: This invention relates to a method for making a dry transfer, photopolymerizable positive-working imaging system which provides a photopolymerizable layer on a support and a colored layer on a substrate. Upon imagewise exposure of the photopolymerizable layer, subsequent lamination of the colored layer to the photopolymerized layer and peel apart, a colored image is produced due to the preferred adhesion of the colored layer to the nonexposed areas of the photopolymerized layer.Type: GrantFiled: October 21, 1988Date of Patent: June 19, 1990Assignee: Hoechst Celanese CorporationInventors: Stephan J. W. Platzer, Stanley F. Wanat
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Patent number: 4931377Abstract: A method of producing a self-supporting film carrying a positive photographic image is provided, comprising splitting an image-carrying positive photographic film in a manner known per se and removing remaining adhering paper residues from the image part and using the so obtained image part as the self-supporting film having thickness of less than 50 .mu.m. Also embodiments are shown for carrying out this process continuously.Type: GrantFiled: May 3, 1989Date of Patent: June 5, 1990Inventor: Henriette S. Boogaards-Konnecker
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Patent number: 4927733Abstract: A method is disclosed of obtaining a void free interface between a photosensitive dry film and substrate by applying uniform fluid pressure after vacuum lamination.Type: GrantFiled: December 23, 1988Date of Patent: May 22, 1990Assignee: E. I. du Pont de Nemours and CompanyInventor: Gary K. Stout
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Patent number: 4925767Abstract: Process for controlling the visual appearance of an image present on a permanent support in the form of a hydrophilic colloid layer, layer system or relief pattern by the transfer of a continuous non-photosensitive layer from a temporary support onto said permanent support either before or after said image is formed thereon, which comprise by pre-wetting the permanent support either image-free or with said image already thereon, containing the pre-wetted support with said continuous layer carried on the temporary support, and stripping off the temporary support to leave the continuous layer adhering on the permanent support, said continuous layer being non-photosensitive and contains hardened gelatin, the gelatin being applied at a coverage of at most 20 g/m2 and having a degree of hardening corresponding with that achieved by the addition of at least 0.001 g of formaldehyde per gram of gelatin.Type: GrantFiled: December 14, 1988Date of Patent: May 15, 1990Assignee: AGFA-Gevaert, N.V.Inventors: Eddie R. Daems, Luc H. Leenders
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Patent number: 4897133Abstract: A method for manufacturing an embossed pattern in a base material comprises the steps of forming an embossed portion in the base material; cutting the embossed portion by using a cutter and a controller for three-dimensionally controlling the relative position between the cutter and the base material; and forming a predetermined embossed pattern in the base material. A method for manufacturing embossed patterns comprises the steps of holding processing data per each of the embossed patterns; and processing the embossed patterns by continuously connecting the processing data to each other sequentially. A method for manufacturing embossed patterns comprises the steps of dividing processing data of the patterns into left and right sections with respect to each of the patterns to process the patterns left and right; providing the same number of upper and lower processing lines with respect to the patterns; and continuously processing portions between the patterns.Type: GrantFiled: January 20, 1988Date of Patent: January 30, 1990Assignee: Kabushiki Kaisha ToshibaInventors: Yoshiaki Nemoto, Hiroshi Ohba
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Patent number: 4877712Abstract: An image-forming process comprising the steps of:(A) transferring an image layer, formed on a transferable light-sensitive material, onto an image-receiving sheet, and(B) transferring the image layer onto a permanent support, wherein the image-receiving sheet comprises a support having formed thereon an image-receiving layer composed of a composition containing an organic high molecular material as the main component, wherein an adhesive power P.sub.1 between the support of the image-receiving sheet and the image-receiving layer and an adhesive power P.sub.2 between the image-receiving layer and the image layer are higher than an adhesive power P.sub.3 between the image layer and the support of the transferable light-sensitive material, and also an adhesive power P.sub.4 between the permanent support and the image layer and adhesive power P.sub.1 are higher than adhesive power P.sub.Type: GrantFiled: May 27, 1988Date of Patent: October 31, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Tomizo Namiki, Kazuo Suzuki, Fumiaki Shinozaki
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Patent number: 4851320Abstract: A selected pattern of conductor runs is formed on a sheet having a surface layer of dielectric material, by forming an electrostatically charged image of the selected pattern on the surface layer. Toner powder, comprising core particles of conductive material coated with fusible dielectric material, is deposited on the surface layer and is fused to the sheet.Type: GrantFiled: May 23, 1988Date of Patent: July 25, 1989Assignee: Tektronix, Inc.Inventor: William W. Stein
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Patent number: 4833066Abstract: In producing a transfer print, a lacquer layer is deposited on a substrate and, in turn, a color layer, an adhesive layer, another lacquer layer, a talcum layer and a photo layer are placed on the lacquer layer. After a portion of the photo layer is exposed, the non-exposed areas of the photo layer and the other layers in register with the non-exposed areas are removed. After the exposed area of the photo layer is removed along with selected subjacent layers, the end product includes the substrate and the remaining areas of the lacquer area on the substrate, the color layer and the adhesive layer.Type: GrantFiled: January 12, 1987Date of Patent: May 23, 1989Assignee: Grobena AGInventor: Anton Fuchs
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Patent number: 4826705Abstract: A composition and method for providing temporary masking of electrical and electronic components compatible with a high speed production operation. The composition is a radiation curable viscous liquid composition which provides minimal adhesion properties and substantial cohesive properties so that when cured, it can be readily removed in the manner of an adhesive tape. In particular, the radiation curable composition is characterized by cured properties a) of positive adhesion to the substrate to which the composition is applied, but insufficient adhesion to resist peeling forces applied by hand; and b) of sufficient cohesive strength to allow substantially all of the cured composition to be stripped mechanically or by hand in a single piece. Suitably the adhesion of the cured composition (22) to the substrate (16) as measured in the tensile shear mode, is between about 5 and 55 psi.Type: GrantFiled: June 15, 1987Date of Patent: May 2, 1989Assignee: Loctite CorporationInventors: Kieran F. Drain, Robert Summers, Larry A. Nativi
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Patent number: 4824762Abstract: The improvement of the invention consists in the use of a specific ether compound, e.g., diethyleneglycol monomethyl, monoethyl and monobutyl ethers, dipropyleneglycol monomethyl and monoethyl ethers, triethyleneglycol monomethyl and monoethyl ethers and tripropyleneglycol monomethyl ether, as a rinse solvent for a substrate from which the pattern photoresist layer has been removed with a remover solution in the photolithographic processing of semiconductor devices. The rinse solvent is free from the problems in the toxicity to human body and environment pollution relative to waste disposal as well as the danger of fire. The rinse solvent is versatile to be applicable to both of the negative- and positive-working photoresist compositions. Further advantages are obtained by adding an aliphatic amine compound to the rinse solvent.Type: GrantFiled: June 26, 1987Date of Patent: April 25, 1989Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Masakazu Kobayashi, Shingo Asaumi, Hatsuyuki Tanaka
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Patent number: 4791043Abstract: Piperazine containing positive photoresist stripping compositions are provided. Formulations include N-aminoalkylpiperazines with the formula ##STR1## bis-N-aminoalkylpiperazines of the formula ##STR2## N-hydroxyalkylpiperazine of the formula ##STR3## and bis-hydroxyalkypiperazines with structure ##STR4## In the above formulae n=1-6. Also included are piperazine derivatives such as those of the above formulae with a branch chain alkyl of 1-6 C atoms, and 5-6 atom cycloalkyl substituted compounds wherein the cycloalkyl is substituted for --(CH.sub.2).sub.n --. Components which may be mixed with the above described piperazine in preparing the positive photoresist stripping compositions of the invention include alkyl or cycloalkyl-2-pyrrolidones of the formula ##STR5## Other amide type solvents with the boiling point in excess of 200.degree. C. as well as high boiling diethylene glycol ethers may also be incorporated.Type: GrantFiled: April 17, 1987Date of Patent: December 13, 1988Assignee: HMC Patents Holding Co., Inc.Inventors: Evan G. Thomas, Edmund W. Smalley, Kane D. Cook
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Patent number: 4786578Abstract: Photoresist and stripper residues can be rapidly and completely removed from semiconductor substrates after the stripping process with an aqueous post-rinsing agent which contains a nonionogenic surfactant and an organic base.Type: GrantFiled: July 20, 1987Date of Patent: November 22, 1988Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Karl H. Neisius, Alois Litters
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Patent number: 4766053Abstract: A method is described for forming an image by transferring an image layer formed on a transferable light-sensitive material to an image-receiving sheet, and then further transferring the image to a permanent support, wherein the image-receiving sheet comprises a support, a first layer on the support, said first layer being made of a first organic polymeric substance, and a second layer on the first layer, said second layer being made of a second organic polymeric substance, whereinin peeling apart the image-receiving sheet from the transferable light-sensitive material,P.sub.1, P.sub.2, P.sub.3 >P.sub.4wherein P.sub.1 is an adhesion force between the support and the first layer, P.sub.2 is an adhesion force between the first and second layers, P.sub.3 is an adhesion force between the second layer and the image layer, and P.sub.Type: GrantFiled: February 19, 1986Date of Patent: August 23, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Fumiaki Shinozaki, Tomizo Namiki, Kazuo Suzuki
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Patent number: 4756988Abstract: Dry-film, negative-acting photoresist layers are used in the formation of many articles such as circuit boards, printing plates and the like. Laminable monolayers of photoresist can suffer from slow speeds, brittleness, variable adhesive characteristics, and narrow processing latitude during development and exposure. The use of a crosslinked or crosslinkable integral thermoplastic adhesive laer on the dry-film, negative-acting photoresist layer improves the properties and performance of the photoresist.Type: GrantFiled: September 29, 1982Date of Patent: July 12, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventors: William L. Kausch, John P. Vikesland
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Patent number: 4752346Abstract: An apparatus and method for separating adherent films using a platform with a grounded, electrically conductive surface capable of bearing a sheet material; and a grounded electrically conductive bar over the surface; and at least two pins for maintaining the position of the bar over the platform surface while permitting the passage of a sandwiched sheet material to be peeled apart, between said bar and said surface.Type: GrantFiled: July 6, 1987Date of Patent: June 21, 1988Assignee: Hoechst Celanese CorporationInventor: Stephan J. W. Platzer
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Patent number: 4751167Abstract: An image producing material which consists essentially of a substrate, an image producing layer and a photosensitive layer in that order. Before the material is exposed to light, the adhesion between the image producing layer and the photosensitive layer is lower than that between the substrate and the image producing layer, whereas, upon exposure to light, the adhesion between the image producing layer and the photosensitive layer becomes higher than that between the substrate and the image producing layer, so that, after exposure, when the photosensitive layer is peeled off, the image producing layer in the exposed area is removed with the photosensitive layer, and the image producing layer in the unexposed area is left on the substrate. Thus, the image producing material enables an image to be produced simply by peeling off the photosensitive layer without the need to apply a special surface treatment to the image producing layer and without the need for any heat treatment or the like after exposure.Type: GrantFiled: April 27, 1987Date of Patent: June 14, 1988Assignee: Kimoto & Co., Ltd.Inventors: Toshio Yamagata, Kentaro Ohsawa
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Patent number: 4744834Abstract: A composition of matter is set forth which is useful for removing a photoresist material from a substrate. The composition comprises 10 to 90% by weight of a 2-pyrrolidinone compound of the formula ##STR1## 10 to 30% by weight of a diethylene glycol monalkyl ether of the formulaHOCH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 OR.sub.21 to 10% by weight of a polyglycol having a molecular weight from about 200 to about 600, and 0.5 to 4% of a quaternary ammonium hydroxide of the formulaN.sup.+ R.sub.3 R.sub.4 R.sub.5 R.sub.6 OH.sup.-wherein R.sub.1 is hydrogen, alkyl of 1 to 3 carbon atoms or hydroxyalkyl of 1 to 3 carbon atoms, R.sub.2, R.sub.3 and R.sub.4 are the same or different alkyl groups of 1 to 4 carbon atoms, R.sub.5 is an alkyl group of 1 to 18 carbon atoms, and R.sub.6 is an alkyl group of 1 to 18 carbon atoms, phenyl, alkylphenyl wherein the alkyl is of 1 to 18 carbon atoms, benzyl, or alkylbenzyl wherein the alkyl is of 1 to 18 carbon atoms.Type: GrantFiled: April 30, 1986Date of Patent: May 17, 1988Inventor: Noor Haq
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Patent number: 4710447Abstract: A method and photo-sensitive ink solution used for producing a tone-accurate color process proof or color transfer is disclosed. The method includes multiple applications of sequential layers of extender coat powder and photo-sensitive ink solution coats. These layers are individually exposed to actinic light through a design bearing film, and that material not underlying the exposed ink coat is removed by means of a light water spray before a new series of sequential layers are applied.Type: GrantFiled: December 22, 1986Date of Patent: December 1, 1987Assignee: Castcraft Industries, Inc.Inventor: Manny Kreiter
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Patent number: 4695527Abstract: A photopolymerizable composition is disclosed which comprises: (a) a free-radically polymerizable compound, (b) a polymeric binder, (c) a photopolymerization initiator, (d) a compound which is thermally crosslinkable with the polymeric binder, with a polymerization product of (a) or with itself, and (e) a pigment. The disclosed composition is used for applying markings to printed circuits and preferably is applied to the solder-resist layer using a dry-resist process, is exposed and then developed, either separately or together with the solder-resist layer.Type: GrantFiled: June 17, 1986Date of Patent: September 22, 1987Assignee: Hoechst AktiengesellschaftInventors: Ulrich Geissler, Heide Lampas
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Patent number: 4685991Abstract: The apparatus comprises a board-clamping device for clamping a printed circuit board at an edge thereof in a predetermined position, at least one pair of gripping jaws, which can be moved toward and away from the plane of travel for the printed circuit boards by a movement having a component in the peeling direction, which is oblique to the direction of conveyance. The two gripping jaws of said pair are adapted to be closed in that only one jaw of said pair is moved in the peeling direction. Each of the jaws of the pair has an edge which is parallel to the plane of travel and transverse to the peeling direction. Said edge is engageable with the printed circuit board. Said edges of the gripping jaws of said pair define between them a nip. The apparatus also comprises a conveyor, which defines a plane of travel for each printed circuit board and serves to move each printed circuit board to a position in which the printed circuit board is engageable by the gripping jaws of said pair thereof.Type: GrantFiled: July 25, 1986Date of Patent: August 11, 1987Assignee: Lohr & Herrmann GmbHInventors: Gunter Herrmann, Hans-Gunter Lohr, Josef W. Mozzi
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Patent number: 4670085Abstract: Apparatus for peeling positive print sheets from disposable components of peel-apart diffusion transfer film unit assemblies which comprises an open bottom chassis capable of being positioned over a receptacle and supporting a rotatable drum for carrying a processed film unit assembly into operative relationship with peeling blade assemblies to remove the print and release the remaining components of the film assembly for disposal through the open bottom of the chassis. The peeling components engage only marginal portions of the print and involve a combination of a movable peeling blade to engage the leading marginal edge of the print and a pair of fixed peeling blades which engage the side margins of the print and retain the print for manual removal from the apparatus.Type: GrantFiled: December 18, 1985Date of Patent: June 2, 1987Assignee: Polaroid CorporationInventors: Jan van der Meer, Kurt Hagen
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Patent number: 4666818Abstract: A method for patterning a photoresist or insulating layer on a printed wiring board utilizes two photoreactive coatings comprising a photoprocessable ultraviolet (UV) sensitive layer overlaid with a thin, unexposed, undeveloped strip base silver film. A white light x-y plotter, preferably employing an octagonal aperture, is driven directly from a CAD system to expose the film on the board in the desired pattern without affecting the underlying UV sensitive layer. The film is then developed on the board and employed as an in situ mask for the underlying UV layer during exposure of the board to a UV flood lamp. After UV exposure the film is peeled off to allow conventional processing of the selectively polymerized layer. This technique produces high resolution, inspectable onboard masks in full registration using reliable low energy plotters.Type: GrantFiled: June 10, 1985Date of Patent: May 19, 1987Assignee: The Foxboro CompanyInventors: Harold Lake, Paul E. Grandmont
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Patent number: 4665005Abstract: In heat developable photographic system of dry procedure, color images are formed by imagewise exposing and then heating a light-sensitive material comprising a support having provided thereon a light-sensitive layer containing silver halide, a binder, and a compound capable of producing or releasing, upon reduction of light-sensitive silver halide to silver at elevated temperatures, a mobile dye, as a direct or inverse function of the reduction reaction, allowing the produced or released mobile dye to migrate into a dye-fixing material having incorporated therein a hydrophilic thermal solvent and fixing the dye thereto, then separating the light-sensitive material from the dye-fixing material, with a fluorine-containing surfactant being incorporated in at least one of the uppermost layers on the contacting sides of the light-sensitive material and of the dye-fixing material.Type: GrantFiled: February 24, 1986Date of Patent: May 12, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiaki Aono, Kozo Sato, Yasuo Mukunoki, Koichi Nakamura
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Patent number: 4635965Abstract: A method for producing an information carrier in the form of a card, such as an identification card or pass, as well as an information carrier produced in accordance with this method. The information carrier comprises a plurality of plastic layers combined with one another into a block, at least one of which contains a photograph of the bearer and/or his fingerprint and/or other readable or machine-readable data in the form of a photographic layer. This photographic layer is produced and incorporated into the sandwich of plastic layers making up the identification card in that a specially prepared film is exposed to light, developed, fixed and dries, and then the carrier layer of this film sandwich is removed from the emulsion after the emulsion has entered into an adhesive bond with a first plastic carrier layer, this adhesion being substantially greater than the adhesion of the emulsion to the film's auxiliary carrier, which is to be removed.Type: GrantFiled: September 9, 1985Date of Patent: January 13, 1987Assignee: Interlock SicherheitssystemeInventor: Werner Vogt
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Patent number: 4631110Abstract: A peeling type developing method and apparatus for removing exposed photoresist from printed circuit boards. The printed circuit board is covered with a photopolymerization compound layer and then a transparent support layer. After exposure, a thin adhesive tape is stuck to the support layer extending obliquely across the board and crossing opposite corners thereof. The adhesive tape, together with the support layer and the unexposed portions of the photoresist material, are peeled off the printed circuit board by a pair of pinch rolls with the aid of a peeling bar in line contact with the substrate through the adhesive tape and the support layer.Type: GrantFiled: July 25, 1985Date of Patent: December 23, 1986Assignee: Nitto Electric Industrial Co., Ltd.Inventors: Akio Tsumura, Shun-ichi Hayashi, Chiharu Miyaake, Kazuo Oouchi, Yutaka Yamamura
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Patent number: 4617251Abstract: Disclosed is a stripping composition for effectively removing an organic polymeric material from a substrate. The stripping composition is essentially free of phenol compounds and halogenated hydrocarbon compounds and contains a select amine compound and an organic polar solvent. It has been found that the stripping composition is highly effective, even when the organic polymeric material to be removed from a substrate is a positive resist which has been subjected to high temperature post-baking operations.Type: GrantFiled: April 11, 1985Date of Patent: October 14, 1986Assignee: Olin Hunt Specialty Products, Inc.Inventor: Joseph J. Sizensky
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Patent number: 4599297Abstract: At least one strip of dry film assembly is supplied continuously to a plurality of mutually spaced apart boards which are also being fed continuously. The film assembly consists of a photosensitive layer sandwiched between a protective film and a base. The base is removed from the assembly when the assembly is supplied to the boards, so that each of the boards may be bonded to the photosensitive layer. The boards and the film assembly are fed intermittently, and the photosensitive layer is exposed to light to print a predetermined pattern on each board. The protective film is removed from the film assembly, and each printed board is subjected to developing treatment.Type: GrantFiled: December 9, 1982Date of Patent: July 8, 1986Assignee: ORC Manufacturing Co., Ltd.Inventors: Yoshio Yazaki, Shinya Ogawa
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Patent number: 4587186Abstract: A mask element for selective sandblasting comprising a support film layer and, superimposed thereon in the following order, a retainer film layer of a water-insoluble cellulose derivative and a photoresist layer of a pattern mask, said photoresist layer of pattern mask being adapted to adhere to the surface of an article body to be engraved with a strength such that the mask is not detached therefrom during sandblasting. By the use of the mask element of the present invention, a pattern exactly corresponding to that of the mask, even if it is very fine, can be engraved on an article body nicely.Type: GrantFiled: April 19, 1984Date of Patent: May 6, 1986Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Shohei Nakamura, Yoshimasa Tuji
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Patent number: 4559292Abstract: The present invention relates to a photosensitive transfer material, which comprises a flexible temporary support film which is preferably transparent, a thermoplastic photosensitive layer, optionally a flexible cover film on the free side of the photosensitive layer and, optionally, an intermediate layer between the support film and the photosensitive layer. The photosensitive transfer material is suitable for manufacturing photoresist stencils and solder masks. The temporary support film has a rough surface which exerts an embossing effect on the surface of the photosensitive layer and the intermediate layer, respectively. The mat-finish of the intermediate layer prevents an irregular deformation of this layer in moist air, while the mat-finish of the photosensitive layer precludes unwanted reflections.Type: GrantFiled: September 29, 1983Date of Patent: December 17, 1985Assignee: Hoechst AktiengesellschaftInventors: Ulrich Geissler, Walter Herwig, Helga Sikora
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Patent number: 4555285Abstract: A method for forming a pattern in a metallic and/or ceramic substrate by laminating together the substrate which is in the green stage and a composite of a photosensitive material and a backing wherein the photosensitive material has been developed into the desired pattern, and then subjecting the substrate to elevated temperatures in order to cause sintering of the substrate and removal of the photosensitive material, thereby resulting in embedding of the pattern into the sintered substrate.Type: GrantFiled: December 14, 1983Date of Patent: November 26, 1985Assignee: International Business Machines CorporationInventors: Dudley A. Chance, Timothy C. Reiley, Michael Sampogna
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Patent number: 4552826Abstract: A microform article useful for producing composite images has an image-forming layer separate from a photosensitive layer and allows for the subsequent addition, when needed, just prior to imaging, of a second photosensitive, resist layer for an add-on image. The unique construction and method therefor provide a positive or negative first image, with the possibility of either positive or negative additional images, the images not necessarily being in the same phase.Type: GrantFiled: October 13, 1983Date of Patent: November 12, 1985Assignee: Minnesota Mining and Manufacturing CompanyInventor: Richard S. Fisch
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Patent number: 4550072Abstract: Gravure printing plates which are highly abrasion-resistant and scratch-resistant can be produced rapidly and simply from a photosensitive recording material by exposing the latter through a photographic positive, washing out the unexposed areas and drying the resulting gravure printing plate, if the photosensitive recording material employed, which comprises a photopolymerizable and/or photocrosslinkable layer (L) applied to a dimensionally stable base, contains finely divided, hard, abrasive particles in the layer (L), the surface of this layer, which subsequently constitutes the surface of the printing plate, has a peak-to-valley height of <2 .mu.m, and the materials of this layer are chosen so that, after exposure and development, it has a Vickers hardness of not less than 10 N/mm.sup.2, measured under load.Type: GrantFiled: October 2, 1984Date of Patent: October 29, 1985Assignee: BASF AktiengesellschaftInventors: John Lynch, Albert Elzer
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Patent number: 4548887Abstract: Colored dye diffusion images are produced using a recording material containing, on a layer support (layer element 1), a first dye absorbent layer (layer element 2), a light-sensitive element containing silver halide emulsion layers and color-providing compounds (layer element 3) and optionally a second dye absorbent layer (layer element 4), in that order. An imagewise distribution of diffusible dyes is produced in the light-sensitive element in the course of development and transferred to the first dye absorbent layer.The light-sensitive element is then decomposed by a treatment which decomposes its layers, e.g. by means of a proteolytic enzyme, but leaves the first dye absorbent layer intact. The second dye absorbent layer optionally present, which has a lower mordanting capacity than the first dye absorbent layer and serves to prevent contamination of the developer bath with diffusible dyes, is also decomposed.Type: GrantFiled: July 3, 1984Date of Patent: October 22, 1985Assignee: AGFA-Gevaert A.G.Inventors: Gunter Helling, Wolfgang Himmelmann
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Patent number: 4544619Abstract: This invention relates to a light sensitive laminate comprising a light sensitive layer of photoresist, a support therefor, and an intermediate protective layer preferably of a light transmitting material disposed between said photoresist layer and said support. In use, the photoresist layer of the laminate is adhered to a base material and the support stripped therefrom, thereby leaving a composite comprising the base material, photoresist layer and intermediate protective layer disposed over said photoresist layer. The intermediate layer serves to protect the photoresist layer from damage such as by abrasion or otherwise during processing, thereby permitting storage of the so-formed composite prior to use. Since the intermediate layer may be of a light transmitting material, photoimaging may take place through the intermediate layer with the intermediate layer subsequently removed by contact with a solvent that is a non-solvent for those areas of photoresist left after development.Type: GrantFiled: February 29, 1984Date of Patent: October 1, 1985Assignee: Shipley Company Inc.Inventors: Carl W. Christensen, Calvin Isaacson