Erasable Imaging Patents (Class 430/19)
  • Patent number: 9370955
    Abstract: The present invention provides an image processing method which includes any one of recording an image on a thermally reversible recording medium that can reversibly change any one of its transparency and color tone depending on temperature by irradiating and heating the thermally reversible recording medium with a laser beam, and erasing the image recorded on the thermally reversible recording medium by heating the thermally reversible recording medium, wherein in any one of the image recording and the image erasing, the thermally reversible recording medium is located at a position farther than a focal position of the laser beam, and at least any one of the image recording and the image erasing is performed.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: June 21, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shinya Kawahara, Yoshihiko Hotta, Tomomi Ishimi
  • Patent number: 9164480
    Abstract: Holographic data storage devices are presented. The holographic data storage device includes an optically transparent substrate, wherein the optically transparent substrate includes a photochemically active dye and a heat generating chromophore. Methods for making holographic data storage device are also presented.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: October 20, 2015
    Assignee: General Electric Company
    Inventors: Eugene Pauling Boden, Brian Lee Lawrence, Xiaolei Shi
  • Patent number: 9087634
    Abstract: A method for manufacturing an electronic component for avoiding electromagnetic interference includes: (a) placing a T-shaped core and an air-core coil in a metal mold; (b) injecting a mixture of a composite magnetic material and a resin into the metal mold so that the T-shaped core and the air-core coil are embedded by the mixture; (c) heating the mixture at a first temperature; (d) adjusting an outer shape while removing excessive mixture; and (e) hardening the mixture. The method may further include a process of polishing an outside of the hardened mixture. The method may further include a process of applying a pressure of 0.1 to 20.0 kg/cm2 to the mixture for adjusting an outer shape of the mixture by a movable punch of a press machine before the hardening process.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 21, 2015
    Assignee: Sumida Corporation
    Inventors: Shinichi Sakamoto, Douglas James Malcolm
  • Patent number: 8889323
    Abstract: A photosensitive resin composition having excellent storage stability which can form a high precision pattern upon a low amount of exposure; a method of forming a pattern including a polysiloxane coating with the photosensitive resin composition; and an electronic component including a pattern including a polysiloxane coating formed with the photosensitive resin composition. A compound which generates an imidazole compound having a predetermined structure by light is added to a photosensitive resin composition including one or more hydrolyzable silane compounds, hydrolysates of the hydrolyzable silane compounds and condensates thereof and a photo-base generator or a photo-acid generator.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: November 18, 2014
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Dai Shiota, Mayumi Kuroko, Tatsuro Ishikawa
  • Publication number: 20140099574
    Abstract: The present invention provides an image processing method which includes any one of recording an image on a thermally reversible recording medium that can reversibly change any one of its transparency and color tone depending on temperature by irradiating and heating the thermally reversible recording medium with a laser beam, and erasing the image recorded on the thermally reversible recording medium by heating the thermally reversible recording medium, wherein in any one of the image recording and the image erasing, the thermally reversible recording medium is located at a position farther than a focal position of the laser beam, and at least any one of the image recording and the image erasing is performed.
    Type: Application
    Filed: December 10, 2013
    Publication date: April 10, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Shinya KAWAHARA, Yoshihiko HOTTA, Tomomi ISHIMI
  • Patent number: 8670140
    Abstract: A transient document management system can include a transient document identifier placement module for placing a transient document identifier on a transient physical document, a transient document information retrieval module for extracting information from the transient physical document, and a transient document processing module for performing data processing based on the information extracted from the transient physical document.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: March 11, 2014
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Victoria Mary Elizabeth Bellotti, Eric J. Shrader
  • Patent number: 8628898
    Abstract: The present invention provides an image processing method which includes any one of recording an image on a thermally reversible recording medium that can reversibly change any one of its transparency and color tone depending on temperature by irradiating and heating the thermally reversible recording medium with a laser beam, and erasing the image recorded on the thermally reversible recording medium by heating the thermally reversible recording medium, wherein in any one of the image recording and the image erasing, the thermally reversible recording medium is located at a position farther than a focal position of the laser beam, and at least any one of the image recording and the image erasing is performed.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: January 14, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Kawahara, Yoshihiko Hotta, Tomomi Ishimi
  • Patent number: 8545738
    Abstract: Provided are ink compositions, methods for making photochromic inks, and methods of using the photochromic inks for erasable media annotation. In accordance with various embodiments, there is an ink composition including a carrier medium and one or more photochromic species in the carrier medium, wherein each of the one or more photochromic species can be selected from the group consisting of monomeric photochromic molecules, photochromic oligomers, and photochromic polymers, and wherein each one of the one or more photochromic species exhibits a reversible transition from a colorless state to a colored state upon exposure to a radiant condition wherein the radiant condition can be selected from the group consisting of a radiant energy and a combination of a radiant energy and thermal energy.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: October 1, 2013
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Gabriel Iftime, Kentaro Morimitsu, Adela Goredema
  • Patent number: 8465887
    Abstract: Exemplary embodiments provide compositions for erasable media and methods of forming polymers for erasable media. The method can include providing a first monomer, the first monomer including one or more alkoxylated bisphenols and adding at least one second monomer and a catalyst to the first monomer to form a mixture at a first temperature, the second monomer selected from the group consisting of an organic diacid, a dialkyl ester of the organic diacid, and combinations thereof. The method can also include melt condensing the mixture by increasing the temperature from the first temperature to a second temperature over a first amount of time to form one or more polymers, wherein the one or more polymers has an acid value in the range of about 0.1 mg-KOH to about 12 mg-KOH.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: June 18, 2013
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Guerino Sacripante, Gabriel Iftime, Kentaro Morimitsu, Roger Gaynor, Peter M. Kazmaier
  • Patent number: 8455161
    Abstract: A method for erasing an image including irradiating an image formed on a thermoreversible recording medium with a laser light having a wavelength of 700 nm to 1,500 nm so as to erase the image, wherein an energy density of the laser light is in a range of the energy density which can erase the image and a center value or less of the range, wherein the thermoreversible recording medium includes a support, and a thermoreversible recording layer on the support, and wherein the thermoreversible recording layer contains a leuco dye serving as an electron-donating color-forming compound and a reversible developer serving as an electron-accepting compound, in which color tone reversibly changes by heat, and at least one of the thermoreversible recording layer and a layer adjacent to the thermoreversible recording layer contains a photothermal conversion material, which absorbs the light and converts the light into heat.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: June 4, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiaki Asai, Tomomi Ishimi, Shinya Kawahara, Yoshihiko Hotta
  • Patent number: 8441668
    Abstract: A computer-implemented method can include receiving a transient printing policy and enforcing the transient printing policy. Enforcement of the transient printing policy can include receiving a request to print a document and, based on the transient printing policy, providing a printing recommendation for the document.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: May 14, 2013
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Eric J. Shrader, Victoria Mary Elizabeth Bellotti
  • Patent number: 8378006
    Abstract: The present invention is a method which erase information printed on a recording medium if necessary and thus reuse the recording medium, and includes 1) decolorable ink compositions which are not erased during the use but erased by a dye readily decolorable by a decolorant, 2) a decolorant composition including a thermal initiator or photoinitiator, and 3) a method for coating the decolorant and applying heat or irradiating UV to erase the dye. According to the present invention, it is possible to prepare various writing inks, and particularly, when applied to recording medium with a magnetic stripe as well as the general purpose papers, it is possible to reduce the production cost significantly, obtain a large import substitution effect of the magnetic ink all of which are imported, and largely reduce the environmental pollution.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: February 19, 2013
    Inventors: Jong-Soo Han, Woon Chang Paik, Hyun-Man Shin, Yeong-Gweon Lim, Yong-Hwan Choi
  • Patent number: 8309281
    Abstract: The present invention related to amorphous photosensitive networks. The networks are characterized by good shape memory properties.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: November 13, 2012
    Assignee: Helmholtz-Zentrum Geesthacht Zentrum feur Material und Kuesten forschung GmbH
    Inventors: Andreas Lendlein, Hong-Yan Jiang, Oliver Junger
  • Patent number: 8293438
    Abstract: Exemplary embodiments provide compositions and methods for an erasable medium that can include a photochromic composite containing a photochromic polymer dispersed in a polymer binder, a similar type polymer of a backbone portion of the photochromic polymer.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: October 23, 2012
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Kentaro Morimitsu, Peter M. Kazmaier, Adela Goredema, Hadi K. Mahabadi
  • Patent number: 8258080
    Abstract: Provided are methods of applying a tissue marking to a tissue and rendering said tissue marking colorless when desired, comprising implanting into the tissue an amount of the tissue marking in sufficient quantity to form a detectable marking, said tissue marking comprising at least one colored compound comprising a thermally activatable fragmentation group and at least one infrared absorbing compound, wherein the at least one colored compound is capable of being rendered colorless by unimolecular fragmentation of the thermally activatable fragmentation group when the tissue marking is non-imagewise exposed by a source of infrared radiation and applying sufficient infrared radiation to a sufficient amount of the tissue marking to render the tissue marking colorless when desired.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: September 4, 2012
    Assignee: Performance Indicator, LLC
    Inventors: Satish Agrawal, Roger Boggs
  • Patent number: 8236466
    Abstract: Exemplary embodiments provide compositions and methods for making and using an erasable medium that can include a photochromic layer disposed over a substrate. The photochromic layer can include one or more photochromic molecule-polymer systems, wherein each of the one or more photochromic molecule-polymer systems can include a photochromic molecule covalently bonded within a polymer main chain, the photochromic molecule including one or more photochromic moieties (PM) linked together via a linker.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: August 7, 2012
    Assignee: Xerox Corporation
    Inventors: Kentaro Morimitsu, Gabriel Iftime, Peter M. Kazmaier
  • Patent number: 8223352
    Abstract: A method of handling documents which can be imaged and erased comprises entry of a scheduled time which a device such as a multipurpose imager and eraser has a low probability of being used. At the scheduled time, erasure of transient documents to be erased is initiated. A transient document to be erased is transported from a first transient document storage area to an erasure area where it is erased, then transported to a second, erased transient document storage area. Upon receipt of a user interrupt during the scheduled erasure, any partially erased transient document is returned to the first transient document storage area for later erasure. The method thus allows for more efficient use of equipment resources, for example in an office environment.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: July 17, 2012
    Assignee: Xerox Corporation
    Inventor: Bryan J. Roof
  • Patent number: 8216765
    Abstract: The present disclosure provides a reusable and reimageable medium including a substrate coated with a photochromic polymer. The photochromic polymer has a glass transition temperature ranging from 30° C. to 150° C., such as from about 30° C. to about 100° C., and the coated substrate converts to a colored state when both UV light and temperatures ranging from 30° C. up to 100° C. are applied to the coated substrate. The present disclosure also provides a method for producing and using the reusable and reimageable medium.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: July 10, 2012
    Assignee: Xerox Corporation
    Inventors: Kentaro Morimitsu, Tyler Norsten, Gabriel Iftime, Peter M. Kazmaier, Guerino Sacripante
  • Patent number: 8164803
    Abstract: A device which can be used to handle documents which can be written to and erased can include a scan head which can output a first light source for scanning a document and a second light source for erasing an image from a printed document. In one embodiment, the device can further include a third light source for writing or imaging a pattern onto a page.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: April 24, 2012
    Assignee: Xerox Corporation
    Inventor: Bryan J. Roof
  • Patent number: 8133652
    Abstract: The present invention provides an image processing method which includes at least any one of image recording and image erasing, wherein a light irradiation intensity at a center position of the laser beam irradiated in the image recording is controlled; in the image recording, a first auxiliary line extended by a predetermined distance from a start point of each of image lines constituting an image in the opposite direction from the scanning direction and a second auxiliary line extended by a predetermined distance from an end point of each of the image lines in the scanning direction are prepared, and when the first and second auxiliary lines including an image line are continuously scanned, the image line is scanned with irradiating the laser beam, and the first and the second auxiliary lines are scanned without irradiating the laser beam to thereby record the image.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: March 13, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Kawahara, Yoshihiko Hotta, Tomomi Ishimi
  • Patent number: 8101334
    Abstract: To provide an image processing method including at least one of recording an image onto a thermoreversible recording medium in which transparency or color tone reversibly changes depending upon temperature, by applying a laser beam with the use of a semiconductor laser device so as to heat the thermoreversible recording medium, and erasing an image recorded on the thermoreversible recording medium, by heating the thermoreversible recording medium, wherein an intensity distribution of the laser beam applied in the image recording step satisfies the relationship represented by Expression 1 shown below, 1.20?I1/I2?1.29??Expression 1 where I1 denotes an irradiation intensity of the applied laser beam in a central position of the applied laser beam, and I2 denotes an irradiation intensity of the applied laser beam on a plane corresponding to 95% of the total irradiation energy of the applied laser beam.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: January 24, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomomi Ishimi, Shinya Kawahara, Yoshihiko Hotta
  • Publication number: 20110305851
    Abstract: An erasable and/or reusable image receiving medium (62) is disclosed along with a system (10) and/or method for using the same, including a unit (60) and/or method for erasing the reusable medium (62).
    Type: Application
    Filed: January 19, 2010
    Publication date: December 15, 2011
    Applicant: Avery Dennison Corporation
    Inventors: HaoChuan Wang, Timothy L. Paris, Chia-Hsi Chu, David N. Edwards, Adrian J. Hulme
  • Publication number: 20110294052
    Abstract: According to one embodiment, a method for erasing an image includes erasing an image formed using a toner containing at least a binder resin, an electron donating color developable agent, and an electron accepting color developing agent by heating for 10 seconds or less. A color difference ?E between a region where the image is erased and a paper is 5 or less.
    Type: Application
    Filed: May 23, 2011
    Publication date: December 1, 2011
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takayasu Aoki, Koji Imamiya, Katsunori Mizuta
  • Patent number: 8039193
    Abstract: Provided are methods of applying a tissue marking to a tissue and rendering said tissue marking colorless when desired, comprising implanting into the tissue an amount of the tissue marking in sufficient quantity to form a detectable marking, said tissue marking comprising at least one colored compound comprising a thermally activatable fragmentation group and at least one infrared absorbing compound, wherein the at least one colored compound is capable of being rendered colorless by unimolecular fragmentation of the thermally activatable fragmentation group when the tissue marking is non-imagewise exposed by a source of infrared radiation and applying sufficient infrared radiation to a sufficient amount of the tissue marking to render the tissue marking colorless when desired.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: October 18, 2011
    Assignee: Performance Indicator LLC
    Inventors: Satish Agrawal, Roger Boggs
  • Patent number: 7935463
    Abstract: A reusable image forming medium, including a substrate; an imaging layer coated on or impregnated into the substrate, wherein an irradiation of the imaging layer produces an image; and a signature material coated on or impregnated into the substrate or the imaging layer, the signature material being detectable by a sensor.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: May 3, 2011
    Assignees: Xerox Corporation, Palo Alto Research Center Incorporated
    Inventors: Peter M. Kazmaier, Sophie V. Vandebroek, Eric J. Shrader, Gabriel Iftime, Chuck Sperling, Lauren Barclay
  • Patent number: 7875408
    Abstract: Compositions comprising photobleachable organic materials can be bleached by 193 nm light, and brought back to their original state by stimuli after exposure. (reversible photobleaching). We use these compositions in art-known contrast enhancement layers and as a part of a photoresist, especially in optical lithography processes for semiconductor fabrication. They may comprise polymers such as organo-silicon polymers, polymers comprising polymers of aromatic hydroxyl compounds such as phenol and naphthol such as phenol formaldehyde polymers and naphthol formaldehyde polymers styrene polymers and phenolic acrylate polymers or cyclic materials comprising: where the radicals “R” and “Y” represent organo, or substituted organo moieties, Structures I, II, and III represent basic organic skeletons and can be unsubstituted or substituted in any available position with any one or combinations of multiple substituents.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: January 25, 2011
    Assignee: International Business Machines Corporation
    Inventors: John A. Hoffnagle, David R. Medeiros, Robert D. Miller, Libor Vycklicky, Gregory M. Wallraff
  • Patent number: 7867672
    Abstract: An image forming medium includes a substrate; an imaging layer including an imaging material coated on said substrate, wherein the imaging material exhibits a reversible transition between a colorless state and a colored state; and a protective layer over the imaging layer, the protection layer including dipolar molecules that can be reversibly switch between a UV light transmission state and a UV light absorption state, wherein the dipolar molecules in their random orientation absorb in substantially the same spectral region as the imaging material in its un-imaged state, and wherein the imaging layer is imageable by ultraviolet light when the dipolar molecules are in the UV light transmission state, but the imaging layer is substantially not imageable by ultraviolet light when the dipolar molecules are in the UV light absorption state.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: January 11, 2011
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Hadi K. Mahabadi, Peter M. Kazmaier
  • Publication number: 20100323286
    Abstract: An image erasing apparatus includes a recording medium height sensor sensing the height of recording mediums stacked on a discharge tray, a discharge tray lifting and lowering mechanism lifting and lowering the discharge tray, a shifting mechanism shifting and discharging the recording mediums, and a controller controlling a discharging operation so that the height of recording mediums on the discharge tray is equal to a desired height on the basis of the output of the recording medium height sensor.
    Type: Application
    Filed: June 16, 2010
    Publication date: December 23, 2010
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Ken IGUCHI, Isao YAHATA, Takahiro KAWAGUCHI, Hiroyuki TAGUCHI, Hiroyuki TSUCHIHASHI, Hiroyuki TAKI
  • Publication number: 20100323287
    Abstract: An image erasing apparatus includes a stacking tray stacking the recording medium, a heater heating the recording medium to a temperature equal to or higher than the temperature at which developer on the recording medium is erased, a detector disposed downstream in a recording medium carrying direction from the heater to detect an image on the recording medium, a recording medium carrying mechanism picking up the recording medium, from the stacking tray sheet by sheet and carrying the picked-up recording medium, a storage box storing the image-erased recording medium by size, a lateral aligning mechanism disposed in the storage box so as to align the recording medium in the lateral direction, and a controller controlling the alignment operation of the lateral aligning mechanism.
    Type: Application
    Filed: June 16, 2010
    Publication date: December 23, 2010
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Isao Yahata, Takahiro Kawaguchi, Hiroyuki Taki, Ken Iguchi, Hiroyuki Tsuchihashi, Hiroyuki Taguchi
  • Patent number: 7852366
    Abstract: A system and a method print one or more images to one or more reimageable documents, wherein the one or more representative of at least a portion of a digital file. The method includes a connecting a portable printer to a computing device. Moreover, the method includes emitting ultraviolet light from a light source, wherein an imaging layer of the reimageable document is imagable by ultraviolet light, wherein ultraviolet light forms a color contrast on the imaging layer that defines an image representative of at least a portion of the digital file.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: December 14, 2010
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Eric J. Shrader, Peter M. Kazmaier, Paul F. Smith, Hadi K. Mahabadi
  • Patent number: 7811741
    Abstract: An image-forming medium and methods for forming and imaging the medium are provided. The disclosed medium can be strongly colored under room illumination (or deliberate UV) and can be selectively discolored at an appropriate light wavelength to form an image. In one embodiment, the image-forming medium can include a substrate (e.g., a sheet of paper), a photochromic material incorporated with the substrate, and a photo-absorbing material incorporated with the photochromic material. Exemplary methods for using the image-forming medium to make a transient image can include first forming the image-forming medium by applying a coating solution containing photochromic material to the substrate or paper. The image-forming medium can have a medium color and can then be selectively exposed to a radiation through a mask to convert the photochromic material from a colored form to a colorless form and thus to form an image having a color contrast with its background.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: October 12, 2010
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Eric Shrader, Kentaro Morimitsu, Tyler Norsten, Gabriel Iftime, Fazilia Seker, Naveen Chopra
  • Publication number: 20100233597
    Abstract: A method of handling documents which can be imaged and erased comprises entry of a scheduled time which a device such as a multipurpose imager and eraser has a low probability of being used. At the scheduled time, erasure of transient documents to be erased is initiated. A transient document to be erased is transported from a first transient document storage area to an erasure area where it is erased, then transported to a second, erased transient document storage area. Upon receipt of a user interrupt during the scheduled erasure, any partially erased transient document is returned to the first transient document storage area for later erasure. The method thus allows for more efficient use of equipment resources, for example in an office environment.
    Type: Application
    Filed: March 16, 2009
    Publication date: September 16, 2010
    Applicant: Xerox Corporation
    Inventor: Bryan J. Roof
  • Patent number: 7736825
    Abstract: A device manufacturing system and method are used to perform multiple exposures utilizing a resettable or reversible contrast enhancing layer. A radiation sensitive layer is formed on a substrate. A resettable or reversible contrast enhancing layer is formed on the radiation sensitive layer. The resettable or reversible contrast enhancing layer is bleached with a first pattern. The first pattern formed in the resettable or reversible contrast enhancing layer is transferred to the radiation sensitive layer. The resettable or reversible contrast enhancing layer is reset to unbleach the resettable or reversible contrast enhancing layer. The resettable or reversible contrast enhancing layer is bleached with a second pattern. The second pattern formed in the resettable or reversible contrast enhancing layer is transferred to the radiation sensitive layer.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: June 15, 2010
    Assignee: ASML Holding N.V.
    Inventor: Harry Sewell
  • Patent number: 7718325
    Abstract: An image forming medium includes a substrate and an imaging layer coated on or impregnated into said substrate, where the imaging layer includes as a photochromic material a spiropyran compound having a conjugated pathway, dispersed in a polymeric binder, wherein the photochromic material exhibits a reversible transition between a colorless state and a colored state in response to heat and light.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: May 18, 2010
    Assignee: Xerox Corporation
    Inventors: Tyler B. Norsten, Gabriel Iftime, Peter M. Kazmaier
  • Patent number: 7709164
    Abstract: An image forming method including (a) providing a reimageable medium comprised of a substrate and a photochromic material, wherein the medium is capable of exhibiting a color contrast and an absence of the color contrast; (b) exposing the medium to an imaging light corresponding to a predetermined image to result in an exposed region and a non-exposed region, wherein the color contrast is present between the exposed region and the non-exposed region to allow a temporary image corresponding to the predetermined image to be visible for a visible time; (c) subjecting the temporary image to an indoor ambient condition for an image erasing time to change the color contrast to the absence of the color contrast to erase the temporary image without using an image erasure device; and (d) optionally repeating procedures (b) and (c) a number of times to result in the medium undergoing a number of additional cycles of temporary image formation and temporary image erasure, wherein the reimageable medium is prepared by a s
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: May 4, 2010
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter M Kazmaier, Naveen Chopra, San-Ming Yang, Raymond W Wong
  • Patent number: 7709185
    Abstract: In a method for imaging a lithographic printing form, subareas of a surface of the lithographic printing form which are covered by amphiphilic molecules, are exposed to electromagnetic radiation. Following the exposure and before printing from the lithographic printing form, the subareas are treated with at least one complex-forming substance, so that a lithographic printing area structured into hydrophilic and hydrophobic regions is obtained.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: May 4, 2010
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Mathias Schlörholz, Harald Latzel, Bernd Vosseler
  • Patent number: 7678515
    Abstract: The presently disclosed embodiments are directed to image forming mediums useful for reimageable and transient documents. More particularly, the embodiments pertain to an image forming medium comprising thermally gated photochromic materials comprising diarylethene (DAE) photochromes which avoid problems with unwanted reduction in color contrast due to background coloration.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: March 16, 2010
    Assignee: Xerox Corporation
    Inventors: Kentaro Morimitsu, Tyler Norsten, Gabriel Iftime, Peter Kazmaier
  • Patent number: 7666558
    Abstract: An image forming medium includes a substrate, and an imaging layer coated on or impregnated into the substrate, wherein the imaging layer includes a photochromic polymer, optionally dispersed in a polymeric binder or a phase change binder, the photochromic polymer including a polymer having at least one photochromic unit grafted therein, wherein the imaging layer exhibits a reversible transition between a colorless state and a colored state in response to heat and light and wherein the imaging layer does not exhibit a transition from the colored state to colorless state when heated in the absence of light.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: February 23, 2010
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter M. Kazmaier, Tyler B. Norsten
  • Patent number: 7655366
    Abstract: An image forming medium includes a substrate and an imaging layer coated on or impregnated into a substrate, where the imaging layer is formed of an imaging composition that includes a solvent or a polymeric binder, and a photochromic material selected from substituted fulgides and substituted dithienylethenes, dissolved or dispersed in the solvent or polymeric binder, and where the imaging composition exhibits a reversible homogeneous-heterogeneous transition between a colorless state, an intermediate colorless or colored erasable state, and a final colored stable state, the photochromic material converting from the colorless state to the colored stable state upon irradiation with light of a first wavelength and converting from the colored stable state to the colorless state upon exposure to heat and light.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: February 2, 2010
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Gabriel Iftime, Tyler B. Norsten
  • Patent number: 7645558
    Abstract: An image forming medium includes a paper substrate and an imaging layer coated on or impregnated into a paper substrate, where the imaging layer is formed of an imaging composition that includes an alkoxy substituted diarylethene photochromic material dissolved or dispersed in a solvent or polymeric binder, and where the imaging composition exhibits a reversible transition between a colorless and a colored state.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: January 12, 2010
    Assignee: Xerox Corporation
    Inventors: Tyler B. Norsten, Gabriel Iftime, Peter M. Kazmaier, Barkev Koshkerian, Naveen Chopra
  • Patent number: 7645560
    Abstract: An image forming medium includes a substrate, and an imaging layer coated on or impregnated into the substrate, wherein the imaging layer includes an imaging composition including a photochromic or photochromic-thermochromic material and an infrared absorbent dissolved or dispersed in a solvent or polymeric binder; wherein the infrared absorber absorbs infrared light of a wavelength in a range from about 730 nm to about 1500 nm; and wherein the imaging composition is imageable by light of a first wavelength and erasable in a short time period by a combination of infrared radiation and light of a second wavelength and exhibits a reversible transition between a colorless and a colored state.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: January 12, 2010
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Gerald A. Domoto, Tyler B. Norsten, Kentaro Morimitsu, Paul F. Smith, Peter M. Kazmaier, Gaetano J. Lavigne, Eric J. Shrader, Stephan V. Drappel
  • Patent number: 7608139
    Abstract: An erasable image forming material is provided, which includes a binder resin, and a color former and a developer dispersed in the binder resin. The color former is amorphous.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: October 27, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Gotanda, Satoshi Takayama, Kenji Sano, Yumiko Sekiguchi, Shinya Sakurada
  • Patent number: 7582398
    Abstract: An image forming medium includes a substrate and an imaging layer coated on or impregnated into the substrate, where the imaging layer includes a photobase generator and a coupling agent. In the image forming medium, irradiation of the imaging layer cause the photobase generator to generate a base that reacts with the coupling agent to produce an image.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: September 1, 2009
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Peter M. Kazmaier, Tyler B. Norsten
  • Patent number: 7582408
    Abstract: Compositions and systems for production of color images with a fluoran leuco dye having a latent developer are disclosed and described. A color forming composition or composite can include a polymer matrix, a thermally modifiable fluoran leuco dye having a latent developer attached thereto, and a radiation absorber. The thermally modifiable fluoran leuco dye can be developable upon the color forming composition being contacted with electromagnetic radiation which causes the radiation absorber to become energized, so that the energized radiation absorber causes the latent developer to undergo rearrangement to produce an intermediate dye form having a phenolic substituent. The intermediate dye can then undergo an acid catalyzed ring opening to produce a colored dye form.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: September 1, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Vladek Kasperchik, Jayprakash C. Bhatt
  • Patent number: 7575848
    Abstract: Imaging layers, image recording media, and methods of preparation of each, are disclosed.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: August 18, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Vladek Kasperchik, Mark Sanders Taylor
  • Patent number: 7575849
    Abstract: Imaging layers, imaging media, and methods of preparation of each, are disclosed.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: August 18, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Susan E. Bailey, Vladek Kasperchik, Paul J. McClellan
  • Patent number: 7575844
    Abstract: Composites, methods, and systems for production of multi-color images which are developable at various wavelengths are disclosed and described. The color forming composite can include a first color forming layer having a first polymer matrix, a first color former, and a first developer where the first color former and the first developer can be in separate phases within the first color forming layer; a second color forming layer having a second polymer matrix, a second color former, and a second developer where the second color former and the second developer can be in separate phases within the second color forming layer; and at least one radiation absorber. The radiation absorber can be present in at least one of the first or second color forming layers. Additionally, the first color forming layer can have a first extinction coefficient that is higher than the second extinction coefficient of the second color forming layer.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: August 18, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Vladek Kasperchik, Susan E. Bailey
  • Patent number: 7572560
    Abstract: An image forming medium includes a substrate, and an imaging layer coated on or impregnated into said substrate, wherein the imaging layer includes an imaging composition including a photochromic or photochromic-thermochromic material dissolved or dispersed in a solvent or polymeric binder, wherein the imaging composition is imageable by light of a first wavelength and erasable in a short time period by a combination of heat and light of a second wavelength such that simultaneous erase with heat and light of the second wavelength is faster than erase by heat alone and exhibits a reversible transition between a colorless and a colored state.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: August 11, 2009
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Gabriel Iftime, Tyler B. Norsten, Barkev Keoshkerian, Naveen Chopra
  • Patent number: 7569316
    Abstract: An image forming medium includes a substrate, and an imaging layer coated on or impregnated into said substrate, wherein the imaging layer includes an imaging composition including a photochromic or photochromic-thermochromic material dissolved or dispersed in a solvent or polymeric binder, wherein the imaging composition is imageable by light of a first wavelength and erasable in a short time period by a combination of heat and light of a second wavelength such that simultaneous erase with heat and light of the second wavelength is faster than erase by heat alone and exhibits a reversible transition between a colorless and a colored state.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: August 4, 2009
    Assignee: Xerox Corporation
    Inventors: Peter M. Kazmaier, Gabriel Iftime, Tyler B. Norsten, Barkev Keoshkerian, Naveen Chopra
  • Patent number: 7541119
    Abstract: An image forming medium includes a substrate and an imaging layer coated on or impregnated into said substrate, where the imaging layer includes a photochromic material dispersed in an ionomer, optionally with an additional polymeric binder, and where the photochromic material exhibits a reversible transition between a colorless state and a colored state in response to heat and optional light.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: June 2, 2009
    Assignee: Xerox Corporation
    Inventors: Tyler B. Norsten, Gabriel Iftime, Peter M. Kazmaier