Patents Represented by Attorney, Agent or Law Firm Thomas H. Magee
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Patent number: 7348123Abstract: A flexographic printing plate is prepared from a photosensitive element having a photopolymerizable elastomeric layer with specific rheological properties. The element is imagewise exposed and thermally treated to form a relief structure suitable for flexographic printing.Type: GrantFiled: October 13, 2006Date of Patent: March 25, 2008Assignee: E.I. du Pont de Nemours and CompanyInventors: Christoph Mengel, Dietmar Dudek, Mark A Hackler, Anandkumar Ramakrishnan Kannurpatti
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Patent number: 7234398Abstract: A planarizing element is described for use in a thermal imaging process. The planarizing element includes a support; a planarizing layer comprising a crosslinkable binder having a weight average molecular weight of about 20,000 to about 110,000.Type: GrantFiled: January 21, 2003Date of Patent: June 26, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Jonathan V. Caspar, Gerald D. Andrews, Jeffrey S. Meth, Gregory C. Weed
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Patent number: 7229726Abstract: The invention relates to a method for thermally transferring an imaging material from an imaging donor to a receiver to form a pattern of the imaging material on the receiver in which a transparent texturing material is thermally transferred, preferably by laser exposure, from a texturing donor to the receiver prior to thermally transferring the imaging material to the receiver.Type: GrantFiled: November 19, 2004Date of Patent: June 12, 2007Assignee: E. I. du Pont de Nemours and CompanyInventor: Jonathan V. Caspar
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Patent number: 7153617Abstract: A donor element is described for use in a thermal imaging process. The donor element includes a support; a heating layer, and a colorant containing thermally imageable layer comprising a crosslinkable binder having a number average molecular weight of about 1,500 to about 70,000. A process for making a color filter using a thermal imaging process, and a liquid crystal display using this color filter are also described.Type: GrantFiled: January 21, 2003Date of Patent: December 26, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Jonathan V. Caspar, Gerald D. Andrews, Gregory C. Weed
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Patent number: 7126705Abstract: A remote printing system including a communication port, a printing device, and a measuring device. The printing device prints images received from the communication port, and the measuring device generates image measurement information from the printed image and transmits the image measurement information to the network port. The remote printing system preferably includes an image server located remotely from the printing device and the measuring device. The image server preferably transmits image data to the printing device, whereupon it is printed, and the measuring device then generates and transmits image measurement information back to the image server. The image server may then generate print quality information. Alternatively, the remote printing system includes a computer collocated with the printing device and measuring device. The computer obtains the image source information from the image server and relays it to the printing device.Type: GrantFiled: August 27, 1999Date of Patent: October 24, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: A. Stephen Novick, William J. Hulsman
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Patent number: 7097298Abstract: An ink receptor sheet for ink jet printing, an ink jet printing system including an ink receptor sheet and a transfer element, a process for preparing an image on permanent support by ink jet printing, and an imaged article made by such process. By incorporation of a photopolymerizable layer into an ink receptor sheet, the handling latitude during lamination and peeling steps of ink jet printing processes was enhanced and durable and resistant images made by such ink jet printing processes were provided.Type: GrantFiled: May 2, 2001Date of Patent: August 29, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Manfred Sondergeld, Volker Struewe
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Patent number: 7041417Abstract: This invention relates to an image receiving layer (22) of a receiver element (20) for laser-induced thermal transfer imaging processes. The image receiving layer (22) is made from a formulation containing a caprolactone polymer and a cellulose ester. The invention is, typically, useful in proofing and color filter applications.Type: GrantFiled: May 9, 2003Date of Patent: May 9, 2006Assignee: E. I. du Pont de Nemours and CompanyInventor: Harvey Walter Taylor, Jr.
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Patent number: 7018751Abstract: A process for making a radiation filter element comprises the steps of: exposing part of an assemblage to infrared radiation, the assemblage comprising a donor comprising (1) a support capable of transmitting infrared light, and (2) a transferable layer comprising a transferable material and an infrared-absorbing dye, the transferable layer of the donor being in contact with a receiver to provide an exposed assemblage comprising an exposed part of the transferable layer and an unexposed part of the transferable layer; separating the receiver and the support of the exposed assemblage to obtain an imaged receiver and a spent donor, wherein the imaged receiver comprises the receiver, a transferred portion of the transferable material and a transferred portion of the infrared-absorbing dye, said transferred portion of the IR dye having a color and the spent donor comprises the support and a retained portion of the transferable layer; and heating the transferred portion of the transferable material and the transfeType: GrantFiled: May 15, 2003Date of Patent: March 28, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Gerald D. Andrews, Jonathan V. Caspar
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Patent number: 7005407Abstract: A thermally imageable element having a thermally imageable layer, wherein the thermally imageable layer has a thermal amplification additive and a stabilizer selected from the group consisting of phenolic type compounds and amine type compounds. These stabilizers present in thermally imageable layers maintain NIR stability during manufacture, and when the thermally imageable elements containing them are used in thermal imaging processes.Type: GrantFiled: November 16, 2001Date of Patent: February 28, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Rolf Dessauer, Jeffrey Jude Patricia, Gregory Charles Weed
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Patent number: 6984478Abstract: A print control for flexographic printing, particularly a flexographic printing form comprising a print control element, and a process for producing such a flexographic printing form.Type: GrantFiled: September 10, 2003Date of Patent: January 10, 2006Assignee: E.I. du Pont de Nemours and CompanyInventors: Martin Leonhard Dreher, Carsten Gasczyk
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Patent number: 6958202Abstract: A process for adjusting the energy of an imaging laser for element and thermally imageable elements suitable for this purpose are described.Type: GrantFiled: December 14, 2001Date of Patent: October 25, 2005Assignee: E.I. du Pont de Nemours and CompanyInventors: Richard Albert Coveleskie, Alan Lee Shobert, Gregory Charles Weed, Harry Richard Zwicker
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Patent number: 6929898Abstract: A photosensitive element for use as a photopolymer printing plate comprising a support, a layer of a photopolymerizable material on the support, and an infrared ablation layer which is ablatable by infrared radiation and substantially opaque to actinic radiation on the photopolymerizable material. The infrared ablation layer comprises at least one infrared absorbing material, a radiation opaque material, and at least one binder which is substantially incompatible with low molecular weight materials in the photopolymerizable layer. The infrared ablation layer is tack-free or substantially tack-free on the photopolymerizable layer. The infrared ablation layer is ablatable from the surface of the photopolymerizable layer upon exposure to infrared laser radiation.Type: GrantFiled: May 5, 2003Date of Patent: August 16, 2005Assignee: E. I. du Pont de Nemours and CompanyInventor: Roxy Ni Fan
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Patent number: 6926790Abstract: A donor element is described for use in a thermal imaging process. The donor element includes a support: a heating layer; a colorant containing transfer layer; and an overcoat layer comprising a wax having a melting point ranging from about 30° C. to about 350° C. Typically the wax is a natural vegetable wax, a mineral wax or a synthetic wax.Type: GrantFiled: May 9, 2001Date of Patent: August 9, 2005Assignee: E. I. du Pont de Nemours and CompanyInventor: Gregory C. Weed
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Patent number: 6892668Abstract: The invention relates to a process and apparatus for forming a photopolymerizable element useful as a flexographic printing plate having at least one layer of particulate material. The process includes forming a layer of a molten photopolymerizable material onto a support; and applying the particulate material onto an exterior surface of the photopolymerizable layer opposite the support within 48 hours of forming the layer of photopolymerizable material. The process optionally includes heating of the surface of the photopolymerizable layer.Type: GrantFiled: February 17, 2004Date of Patent: May 17, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Roxy Ni Fan, William John Hommes
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Patent number: 6890691Abstract: A process for adjusting the energy of an imaging laser for imaging of a thermally imageable element and thermally imageable elements suitable for this purpose are described.Type: GrantFiled: December 14, 2001Date of Patent: May 10, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard Albert Coveleskie, Harry Richard Zwicker
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Patent number: 6881526Abstract: A process for adjusting the energy of an imaging laser for imaging of a thermally imageable element including the steps of: (a) providing an imaging unit having a non-imaging laser and an imaging laser, the non-imaging laser having a light detector which is in communication with the imaging laser, (b) contacting a receiver element with the thermally imageable element in the imaging unit, wherein the receiver element comprises a light attenuating layer having a front surface and a back surface; (c) actuating the non-imaging laser to expose the thermally imageable element and the receiver element to an amount of light energy sufficient for the light detector to detect the amount of light reflected from the thermally imageable element and light attenuating layer of the receiver element; and (d) actuating the imaging laser to focus the imaging laser in order to expose the thermally imageable element to an amount of light energy sufficient for imaging the thermally imageable element.Type: GrantFiled: December 14, 2001Date of Patent: April 19, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: John E. Bobeck, Richard Albert Coveleskie, Jeffrey Jude Patricia, Alan Lee Shobert, Harvey Walter Taylor, Jr., Harry Richard Zwicker
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Patent number: 6869755Abstract: An element for forming a print-out image containing a substrate, which may be cellulose, having a first surface and a second surface; a dye forming composition on the first surface of the substrate; and a non-dye forming composition on the second surface of the substrate having at least one hydrogen donor compound.Type: GrantFiled: December 20, 2001Date of Patent: March 22, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: William Frank Mooney, III, David Raymond Logrando
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Patent number: 6861201Abstract: Novel photopolymer compositions are disclosed which contain dyes that absorb strongly in the near infrared (near IR) region of the electromagnetic spectrum. These dyes are useful as photosensitizers for initiating a variety of photoimaging and photopolymerization reactions. Imaging Media are disclosed herein which are sensitive in the near infrared (near IR) region of the electromagnetic spectrum and which can initiate polymerization of ethylenically unsaturated monomer components in negative-acting photopolymer systems and/or which can initiate conversion of a leuco dye to its corresponding colored dye form. These imaging media comprise either a near IR dye photochemical sensitizer, a hexaarylbiimidazole (HABI) photoinitiator, a chain transfer agent, and a photopolymerizable material or a near IR dye photochemical sensitizer, a hexaarylbiimidazole (HABI) photoinitiator, and a leuco dye.Type: GrantFiled: April 7, 2004Date of Patent: March 1, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Gregory C. Weed, Dietrich M. Fabricius
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Patent number: 6818363Abstract: A thermally imageable layer comprising an aqueous dispersion containing an immiscible compound, typically a near infrared absorber, and a dispersant, typically an acrylic polymer, which layer is useful in laser induced colorant transfer processes.Type: GrantFiled: October 24, 2002Date of Patent: November 16, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Graciela Beatriz Blanchet Fincher, Ronald J. Convers, Gregory C. Weed
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Patent number: 6797454Abstract: A method and apparatus for thermal processing a photosensitive element includes heating a composition layer on a flexible substrate to a melt temperature of an unirradiated area of the composition layer and maintaining the flexible substrate at a temperature below the melt temperature while pressing a heated absorbent layer against the heated composition layer, and repeating these steps for multiple cycles. A further embodiment of the method includes a step of cooling the flexible substrate and layer laminate on each cycle to maintain the flexible substrate at the desired temperature below that of the heated composition layer.Type: GrantFiled: February 19, 2002Date of Patent: September 28, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Melvin Harry Johnson, David Anthony Belfiore, Mark A. Hackler, Anandkumar Ramakrishnan Kannurpatti, Robert Lee Brown, Stephen Cushner, Robert Finley Drury