Patents Assigned to Rexham Graphics Inc.
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Patent number: 5622795Abstract: Unique laser ablation transfer ("LAT") imaging technique presenting options of flexibility and versatility hitherto alien to LAT imaging science ("LATIS"), comprises LAT imaging onto special or conventional intermediate receptor elements, characteristically onto adhesive face surface thereof, and then laminating, notably hot laminating under pressure, the intermediate receptor thus imaged onto any one of a very wide variety of ultimate receptor substrates; thus produced are, e.g., original full-color prints or proofs, photomasks, monochrome or multichrome transparencies, and the like, having smooth or matte protective durable overcoatings.Type: GrantFiled: June 6, 1995Date of Patent: April 22, 1997Assignee: Rexham Graphics Inc.Inventor: Ernest W. Ellis
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Patent number: 5612165Abstract: Unique laser ablation transfer ("LAT") imaging films presenting options of flexibility and versatility hitherto alien to this art are produced, on-demand, by toning appropriate substrate as to provide thereon an ablative discontinuous film topcoat comprising a contrast imaging amount of conventional or modified toner particulates.Type: GrantFiled: June 7, 1995Date of Patent: March 18, 1997Assignee: Rexham Graphics Inc.Inventor: Ernest W. Ellis
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Patent number: 5593808Abstract: Unique laser ablation transfer ("LAT") imaging technique presenting options of flexibility and versatility hitherto alien to LAT imaging science ("LATIS"), comprises LAT imaging onto special or conventional intermediate receptor elements, characteristically onto adhesive face surface thereof, and then laminating, notably hot laminating under pressure, the intermediate receptor thus imaged onto any one of a very wide variety of ultimate receptor substrates; thus produced are, e.g., original full-color prints or proofs, photomasks, monochrome or multichrome transparencies, and the like, having smooth or matte protective durable overcoatings.Type: GrantFiled: October 13, 1995Date of Patent: January 14, 1997Assignee: Rexham Graphics Inc.Inventor: Ernest W. Ellis
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Patent number: 5539038Abstract: Provided is an ink jet ink comprised of water, a pigment, a polymeric electrolyte, preferably a sodium, potassium or lithium salt of a polymeric carboxylic acid, a polyhydric alcohol and a stearate, preferably aluminum stearate. The presence of the stearate, particularly in combination with the polymeric electrolyte, provides one with an ink jet ink which upon printing makes a perfectly round dot located only on the surface of the paper. The image also dries very quickly, is of high density and is waterfast. Printing problems are also avoided, such as plugging.The process for preparing the foregoing ink jet ink comprises comminuting a formulation containing the components followed by a separation step. The separation step is important to provide a stable dispersion of the ink formulation.Type: GrantFiled: October 3, 1994Date of Patent: July 23, 1996Assignee: Rexham Graphics, Inc.Inventors: Boris J. Katsen, Richard S. Himmelwright, Barbara J. Stewart
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Patent number: 5536561Abstract: A multi-layered web is produced by providing a first layer comprised of a strip of biaxially oriented polymeric film characterized by an inherent tendency to bend within its own plane. The strip is tensioned so as to overcome the bending tendency and assume a straight orientation. While the strips is held straight, a second layer of material is adhered to the strip. The second layer counteracts the bending tendency of the first layer so that when the tensioning forces are released, the web is straight. The first and second layers may comprise first and second strips of plastic film, respectively, which are arranged such that the bending tendencies of the strips are oriented opposite one another. The strips are adhered together by an adhesive material, or by being directly fused together. Alternatively, the second layer may comprise a coating applied to the plastic strip. The coating can be applied to one or both sides of the strip.Type: GrantFiled: March 23, 1993Date of Patent: July 16, 1996Assignee: Rexham Graphics Inc.Inventors: Eran (Ron) Turi, Daniel D. Olesiuk
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Patent number: 5501938Abstract: A unique method/system for simultaneously creating and transferring a contrasting pattern of intelligence on and from a composite ablation-transfer imaging medium to a receptor element in contiguous registration therewith is improvedly radiation sensitive and versatile, is kinetically rapid and not dependent on a sensitized ablative topcoat, and is well adopted for such applications as, e.g.Type: GrantFiled: January 13, 1994Date of Patent: March 26, 1996Assignee: Rexham Graphics Inc.Inventors: Ernest W. Ellis, Diane M. Foley, Dana R. Arnold
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Patent number: 5475480Abstract: A novel two step process is disclosed for the manufacture of protected, distortion-free, full-color electrographic images for use on large format posters, billboards and the like. A novel electrographic element, which is used in the process, comprises a carrier layer; optionally, a protective layer; a conductive layer; a dielectric layer; and a substantially tack-free, adhesive layer which is activated at a pressure and a temperature which is above ambient pressure and temperature of the electrographic element. The novel electrographic imaging process comprises: A) producing a toned image layer on the surface of the electrographic element, so that the toned image layer is adhered to the surface of the adhesive layer; and B) pressure laminating the receptor substrate at an elevated temperature to the toned image layer to form the completed electrographic image.Type: GrantFiled: November 4, 1994Date of Patent: December 12, 1995Assignee: Rexham Graphics Inc.Inventors: Douglas A. Cahill, Donald A. Brault, Richard S. Himmelwright
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Patent number: 5427847Abstract: Provided is a receptor sheet tier receiving donor material in imagewise fashion by means of mass transfer printing. The receptor sheet has a substrate having a wax coating with a glass transition temperature below about 25.degree. C. The coating may also contain a polymeric material and/or silica. Such receptor sheets provide excellent print quality in high speed printers.Also provided is donor sheet-receptor sheet system, a method of forming the receptor sheet of the invention, and a method for forming an image on the receptor sheet of the invention.Type: GrantFiled: May 20, 1993Date of Patent: June 27, 1995Assignee: Rexham Graphics Inc.Inventor: Robert C. Zawada
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Patent number: 5414502Abstract: A novel two step process is disclosed for the manufacture of protected, distortion-free, full-color electrographic images for use on large format posters, billboards and the like. A novel electrographic element, which is used in the process, comprises a carrier layer; optionally, a protective layer; a conductive layer; a dielectric layer; and a substantially tack-free, adhesive layer which is activated at a pressure and a temperature which is above ambient pressure and temperature of the electrographic element. The novel electrographic imaging process comprises: A) producing a toned image layer on the surface of the electrographic element, so that the toned image layer is adhered to the surface of the adhesive layer; and B) pressure laminating the receptor substrate at an elevated temperature to the toned image layer to form the completed electrographic image.Type: GrantFiled: February 18, 1994Date of Patent: May 9, 1995Assignee: Rexham Graphics Inc.Inventors: Douglas A. Cahill, Donald A. Brault, Richard S. Himmelwright
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Patent number: 5399413Abstract: Provided is a composite material comprising a carrier, a conductive layer formed on the carrier, and a dielectric layer containing spacer particles formed on the conductive layer. The dielectric layer has an abrasion factor less than about 0.3 determined by a brass shim abrasion method, and a substantially uniform distribution of spacer particles substantially free of flat spots greater than about 100 microns in the x-y direction and 1500 square microns in area on any part of the surface. The spacer particles of the dielectric layer of the composite material preferably are amorphous silica. The composite material is useful in electrostatic imaging technology and provides images substantially free of defects, including artifacts or flares, dropouts and nib writing.Also provided is a process which permits the creation of very stable dispersions of solid particles in a dispersing medium useful for both the dielectric and conductive layers of the composite material of the invention.Type: GrantFiled: April 30, 1993Date of Patent: March 21, 1995Assignee: Rexham Graphics Inc.Inventors: Boris J. Katsen, Dene H. Taylor, Richard S. Himmelwright, Cynthia F. Klausner, Edward W. Sporbert, Barbara J. Stewart, John Cavanaugh, Eran Turi
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Patent number: 5400126Abstract: An electrographic imaging element having the following structure:a) a carrier layer,b) a conductive layer,c) a dielectric layer, andd) a substantially tack-free, adhesive layer which is activated at a pressure and a temperature which is above ambient pressure and temperature of the electrographic element and wherein a toned electrographically image generated on the element is produced on the surface of the adhesive layer.Type: GrantFiled: February 18, 1994Date of Patent: March 21, 1995Assignee: Rexham Graphics, Inc.Inventors: Douglas A. Cahill, Donald A. Brault, Richard S. Himmelwright
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Patent number: 5385771Abstract: Provided is an electrographic printing paper suitable for the printing of a quality image, which printing paper is pastable and is therefore useful in pastable displays, including outdoor billboards. The electrographic printing paper is comprised of a dielectric coating on a conductive base paper which exhibits wet strength and wet expansion properties suitable for pasted displays. The conductive base paper contains a wet strength agent and a sizing or coating of a conductivizing composition comprised of a binder and a substantially water insoluble conductivizing agent.Type: GrantFiled: May 10, 1993Date of Patent: January 31, 1995Assignee: Rexham Graphics Inc.Inventors: Carl V. Willetts, Cynthia F. Klausner, Donald A. Brault, Bryan W. M. Crosbie, Alan F. Stewart, Dene H. Taylor
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Patent number: 5382495Abstract: It has surprisingly been found that a protective coating composition for diazo-containing materials can be prepared from a cellulose ester, a hydroxylated resin, a crosslinking agent, microcrystalline silica and an acid catalyst. The coating compositions of the invention provide improved protection for diazo-containing materials from physical and chemical damage. The protective coating compositions of the invention are particularly effective for protecting the diazo-containing materials from chemical attack from solvents. The invention further relates to photographic elements and phototools provided with the protective coating composition and a method for providing the coating composition.Type: GrantFiled: May 1, 1991Date of Patent: January 17, 1995Assignee: Rexham Graphics, Inc.Inventors: Thomas C. Niziolek, George Hodgins, Marie B. Ray
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Patent number: 5363179Abstract: A novel two step process is disclosed for the manufacture of protected, distortion-free, full-color electrographic images for use on large format posters, billboards and the like. A novel electrographic element, which is used in the process, comprises a carrier layer; optionally, a protective layer; a conductive layer; a dielectric layer; and a substantially tack-free, adhesive layer which is activated at a pressure and a temperature which is above ambient pressure and temperature of the electrographic element. The novel electrographic imaging process comprises: A) producing a toned image layer on the surface of the electrographic element, so that the toned image layer is adhered to the surface of the adhesive layer; and B) pressure laminating the receptor substrate at an elevated temperature to the toned image layer to form the completed electrographic image.Type: GrantFiled: September 3, 1993Date of Patent: November 8, 1994Assignee: Rexham Graphics Inc.Inventors: Douglas A. Cahill, Donald A. Brault, Richard S. Himmelwright
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Patent number: 5352503Abstract: The present invention provides one with a recording paper useful in ink jet recording processes. The recording paper is comprised of a substrate and a coating, with the coating comprising a pigment and a binder. The binder contains a water-soluble polymer, such as polyvinyl alcohol, and a curl behavior enhancing amount of a polyether, e.g., a polyalkylene glycol such as polyethylene glycol. Generally, the polyether has an average molecular weight of at least 400. The use of the present ink jet recording paper has been found to exhibit excellent imaging performance as well as superior curl behavior.Type: GrantFiled: September 21, 1992Date of Patent: October 4, 1994Assignee: Rexham Graphics Inc.Inventors: Mark C. Drake, Alex J. Miklasiewicz
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Patent number: 5308680Abstract: Provided is an acceptor sheet useful for receiving marking material in imagewise fashion by means of mass transfer printing. The acceptor sheet comprises a substrate which has a microrough surface, wherein the coating is comprised of polymer particles which have not coalesced to form a uniform, continuous film. Such acceptor sheets exhibit superior mass transfer printing properties, and in particular superior wax thermal transfer printing properties, as compared to acceptor sheets having smooth coatings comprised of film-forming polymers.Type: GrantFiled: October 22, 1991Date of Patent: May 3, 1994Assignee: Rexham Graphics Inc.Inventors: Robert C. Desjarlais, Robert C. Zawada
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Patent number: 5306543Abstract: Provided is a conductive coating composition which comprises a colloidal dispersion of cuprous iodide particles in a binder resin solution which contains an ohmic bridging electrolyte. The preferred ohmic bridging electrolyte is potassium iodide. The colloidal dispersion also preferably exists in an aqueous system, with the binder resin being a water soluble polymer such as a polyvinyl alcohol. Upon coating a support with the dispersion, a transparent conductive coating is achieved comprised of ohmic bridged cuprous iodide particles and the binder resin. Such a coating composition can be advantageously used in the manufacture of imaging elements, and provides many advantages in the handling and manufacture of the imaging elements, as well as in the adhesive properties exhibited by the imaging elements.Type: GrantFiled: June 3, 1992Date of Patent: April 26, 1994Assignee: Rexham Graphics Inc.Inventor: Boris J. Katsen
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Patent number: 5292588Abstract: Provided is a process for preparing a stable dispersion. The dispersion is comprised of a pigment, such as cuprous iodide, dispersed in a binder resin solution. The process is comprised of first dispersing the pigment into a binder resin solution, grinding the dispersion, preferably until a bi-modal distribution of pigment particles is obtained, separating the dispersed particles into two fractions and then recovering the fraction having the smaller average particle size. The resulting dispersion has been found to be quite stable and useful in transparent coatings applicable to electrophotography, electrostatic and thermal imaging elements.Type: GrantFiled: November 13, 1992Date of Patent: March 8, 1994Assignee: Rexham Graphics Inc.Inventor: Boris J. Katsen
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Patent number: 5259992Abstract: Conductivizing coating solutions prepared from cuprous iodide and ligands which are pyridine or monodentate pyridine derivatives provide excellent transparent, conductive coatings for use in electrophotographic and ground plane including articles. The coating compositions may also utilize solvents which solubilize the cuprous iodide-ligand complex formed. A method of forming transparent conductivizing coating solutions is also provided.Type: GrantFiled: February 14, 1992Date of Patent: November 9, 1993Assignee: Rexham Graphics Inc.Inventor: Everett W. Bennett