Composition Patents (Class 347/150)
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Patent number: 8384748Abstract: Exemplary embodiments provide materials and methods for a printer member used in ink-jet marking systems that can include a layer electrospun over an aluminum roller to facilitate transport of a printable substrate having ink images thereon and to reduce ink offset from the printable substrate.Type: GrantFiled: July 29, 2009Date of Patent: February 26, 2013Assignee: Xerox CorporationInventors: Kock-Yee Law, Hong Zhao, Varun Sambhy
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Patent number: 8322848Abstract: A method for generating documents having stored electrostatic pattern information provides security with respect to the authenticity of documents. A liquid medium including a plurality of electrostatic monopoles is applied to the surface of a document, which embeds a permanent electrostatic pattern in the document. The pattern is then readable by an electrostatic scanner. The monopoles may be associated with differing colors, including black and white, may be transparent or have a neutral color. The patterns may embed data, certificates or shapes. The monopoles may provide a watermark or visible image. The apparatus may be a pen or printer, and may include multiple selectable vessels containing ink and/or electrostatic liquid medium of one or both charge states. Visible features of the document can be compared with the detected pattern, or the pattern may be compared to a database or decrypted with a key.Type: GrantFiled: April 19, 2012Date of Patent: December 4, 2012Assignee: International Business Machines CorporationInventor: Michael Gilfix
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Patent number: 8199174Abstract: A method and apparatus for generating documents having stored electrostatic pattern information provides security with respect to the authenticity of documents. A liquid medium including a plurality of electrostatic monopoles is applied to the surface of a document, which embeds a permanent electrostatic pattern in the document. The pattern is then readable by an electrostatic scanner. The monopoles may be associated with differing colors, including black and white, may be transparent or have a neutral color. The patterns may embed data, certificates or shapes. The monopoles may provide a watermark or visible image. The apparatus may be a pen or printer, and may include multiple selectable vessels containing ink and/or electrostatic liquid medium of one or both charge states. Visible features of the document can be compared with the detected pattern, or the pattern may be compared to a database or decrypted with a key.Type: GrantFiled: December 3, 2009Date of Patent: June 12, 2012Assignee: International Business Machines CorporationInventor: Michael Gilfix
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Patent number: 7748748Abstract: A method and apparatus for generating and authenticating documents having stored electrostatic pattern information provides security with respect to the authenticity of documents. A liquid medium including a plurality of electrostatic monopoles is applied to the surface of a document, which embeds a permanent electrostatic pattern in the document. The pattern is then readable by an electrostatic scanner. The monopoles may be associated with differing colors, including black and white, may be transparent or have a neutral color. The patterns may embed data, certificates or shapes. The monopoles may provide a watermark or visible image. The apparatus may be a pen or printer, and may include multiple selectable vessels containing ink and/or electrostatic liquid medium of one or both charge states. Visible features of the document can be compared with the detected pattern, or the pattern may be compared to a database or decrypted with a key.Type: GrantFiled: April 12, 2005Date of Patent: July 6, 2010Assignee: International Business Machines CorporationInventor: Michael Gilfix
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Patent number: 6565175Abstract: This invention relates to an integrated printhead (20) for ink jet printers, wherein the addressing of the various nozzles is effected in at least 3-D mode. The head (20) comprises a plurality of groups (24) of ink jet elements (21, 22) arranged in M rows and L columns wherein, in particular, the selection and activation of the different columns L are performed, under the control of an external drive circuit, by means of logic circuits (25) inside the head itself (20). The head (20) is advantageous with respect to the known art in that it does not require control of the L columns under critical conditions such as highly variable electric currents with very high peak values.Type: GrantFiled: January 11, 2002Date of Patent: May 20, 2003Assignee: Olivetti Tecnost S.p.A.Inventors: Alessandro Scardovi, Renato Conta
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Patent number: 6515098Abstract: The damping performance of an article and a polycarbonate composition is improved and a storage medium for data is provided with a glass transition temperature greater than about 150° C.Type: GrantFiled: July 2, 2001Date of Patent: February 4, 2003Assignee: General Electric CompanyInventors: Ramesh Hariharan, Kathryn Lynn Longley, Gary Charles Davis, Grant Hay
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Patent number: 6022942Abstract: There is provided herein an optical storage media which has low VBR. In a preferred embodiment, there is provided an optical disk comprising a genus of copolycarbonates, including copolyestercarbonates, which have excellent physical and optical properties. Said copolycarbonates have proportions of structural units which fall within a specific composition range, and said range defines certain materials, a large percentage of which can be molded into optical disks having the desired optical properties, including low VBR.Type: GrantFiled: January 5, 1999Date of Patent: February 8, 2000Assignee: General Electric CompanyInventors: Kenichi Ishiwa, Henricus H. M. van Hout, Ali Dhinojwala, Niles R. Rosenquist, Paul D. Sybert, Steven F. Hubbard, Paul C. Raymond, III, Joseph A. King, Jr., Gary C. Davis
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Patent number: 5488394Abstract: A print head is made from an electronic circuit having a pattern of electric conductors embedded in a dielectric substrate. The conductors are formed by depositing a cermet material in grooves in the substrate, and heating the substrate in a kiln so as to make the cermet electrically conductive, and to form a very tight bond between the conductors and the substrate. The resulting circuit is stable, rugged, and capable of withstanding a wide range of adverse environmental conditions. The print head can be used in a thermal or electrostatic printer, or other type of printer using a print head powered by electric circuitry. The rugged, high-density circuit of the present invention can generate a set of very closely-spaced conductors which are then used to produce a high-density image. The invention also includes a multi-layered version of the print head, and permits the production of black and white or color halftone images having very large numbers of grey scale levels, and exceptional resolution.Type: GrantFiled: August 8, 1994Date of Patent: January 30, 1996Assignee: Max Levy Autograph, Inc.Inventor: Donald C. Sedberry