Chromogenic (i.e., Color Formation By Reaction Of Color Former With Color Developer) Patents (Class 106/31.16)
  • Patent number: 9474862
    Abstract: A medication administration device is provided. The device has a flexible tube having an administration end, an activation end and a lumen between the ends. An administration assembly is attached to the administration end. An activation assembly is attached to the activation end. A syringe is disposed within the lumen. The syringe contains the medication and has a first end and an opposite second end. A plunger is disposed within the lumen and operatively connected to the first end of the syringe. A rupturable seal is provided to the second end of the syringe, which end is approximate to the administration end. The activation assembly activates the plunger to break the rupturable seal to establish a fluid communication between the second end of the syringe and the administration assembly. Accordingly, transportation of the medication from the syringe to the medication administration assembly through the medication administration end is allowed.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: October 25, 2016
    Inventor: Jessica Walsh
  • Patent number: 9320288
    Abstract: Cyclodextrin compositions, including a hydrophobic carrier and a cyclodextrin complex, are formed and disposed on a variety of substrates using conditions that avoid substantial loss of the complexed compound from the cyclodextrin complex, even where the complexed compound is a gas a common ambient temperatures (e.g. 20° C.). Flexographic printing is particularly useful for disposing the cyclodextrin compositions on one or more substrates. Substrates treated with the cyclodextrin complexes are useful for subsequent release of the complexed compound.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: April 26, 2016
    Assignees: Cellresin Technologies, LLC, Kimberly-Clark Worldwide, Inc.
    Inventors: Willard E. Wood, Ali Yahiaoui
  • Patent number: 9034089
    Abstract: The disclosed invention relates to the use of molybdenum (VI) peroxo complex containing an amino acid, such as MoO(O2)2(GLY)(H2O), in marking applications, as well as to ink formulations comprising such complexes.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: May 19, 2015
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Anthony Jarvis, Martin Walker, Adam O'Rourke, Richard Cook
  • Patent number: 8888906
    Abstract: A heat-sensitive color-developing composition containing a hydroxyquinoline compound having a methyl group and an acid anhydride compound represented by general formula (1): wherein ring A represents a substituted or unsubstituted aromatic hydrocarbon ring, and n represents an integer of 1 to 3, and a heat-sensitive recording material containing the composition in a recording layer.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: November 18, 2014
    Assignee: Yamamoto Chemicals, Inc.
    Inventors: Ryoji Yamaguchi, Toshihiro Masaoka, Keisuke Takuma
  • Patent number: 8845799
    Abstract: The present invention relates to a reversibly thermochromic aqueous ink composition comprising: water; a water-soluble organic solvent; a reversibly thermochromic microcapsule pigment which contains a reversibly thermochromic composition comprising: (A) an electron donating coloring organic compound, (B) an electron accepting compound, and (C) a reaction medium which determines temperature at which color reactions between the components (A) and (B) occur; a comb type polymer dispersant having carboxyl groups on its side chains, an organic nitrogen sulfur compound, and a water-soluble resin, a writing instrument using the ink composition, and a writing instrument set comprising the writing instrument and a frictional body.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: September 30, 2014
    Assignee: The Pilot Ink Co., Ltd.
    Inventor: Katsuyuki Fujita
  • Publication number: 20140241954
    Abstract: A color-appearing ink composition includes a surfactant blend of at least two non-ionic surfactants having hydrophilic-lipophilic balance values greater than 10, or a non-ionic surfactant having a hydrophilic-lipophilic balance value greater than 10 and a charged surfactant. The composition includes one or more water-insoluble leuco dyes, a developer and a desensitizer. The composition may be applied to a substrate to form a sensor.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicant: KIMBERLY-CLARK WORLDWIDE, INC.
    Inventors: Ronnie Lee Phillips, Jeffery Richard Seidling, Corey Thomas Cunningham, Xuedong Song
  • Patent number: 8791045
    Abstract: The invention describes a color-developing composition that contains at least three major components: (1) a leuco dye or a combination of leuco dyes, (2) an color-developer or a combination of color-developers that can form colored complexes with the leuco dyes, and (3) a desensitizer to temporarily remove the effect of the developer so the leuco dye appears in its colorless form. An optional binder may be included so that the composition may be applied to a substrate as an ink. The ink composition may be applied to synthetic polymeric substrates and other substrates that are incorporated into absorbent articles or personal care products.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: July 29, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ning Wei, Xuedong Song, JinHo Ryu, JunMo Gil
  • Publication number: 20140066870
    Abstract: The present disclosure relates to a color-changing composition and to a substrate having the color-changing compositions disposed thereon. The color-changing composition includes a leuco dye, a color-developer and a desensitizer. The color-changing composition changes from a colorless or largely colorless composition to color upon being wetted with an aqueous liquid. The color-changing composition remains colorless or largely colorless prior to exposure to high relative humidity conditions.
    Type: Application
    Filed: August 28, 2012
    Publication date: March 6, 2014
    Inventors: JunMo Gil, Ning Wei, JinHo Ryu, Xuedong Song
  • Patent number: 8647735
    Abstract: This invention relates to a heating article (1) comprising a substrate (2) of which one of the surfaces (21) is equipped with a design (4), in the form of a coating layer with at least one pattern (41, 42), which comprises a thermochromic pigment composition with at least one SC thermochromic pigment that is lipid-sensitive under heat. According to the invention, the thermochromic pigment composition includes at least one thermostable pigment and composite pigment grains (43), which each include a core (430) including the semiconducting thermochromic pigment, and a solid, transparent and continuous envelope (431), formed by a mineral or organomineral material. The thermochromic pigment composition shows a reversible change in color in a thermal color-change area with an amplitude of no more than 40° C. within the range of variation of said temperature T1 of use.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: February 11, 2014
    Assignee: SEB S.A.
    Inventors: Stephanie Le Bris, Laurent Voisin, Jean-Luc Perillon
  • Patent number: 8506695
    Abstract: Coating compositions and industrial packages including the coating compositions are disclosed.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: August 13, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Molly L. Hladik, Mehrgan Khavari, Cari L. Dorsh
  • Publication number: 20130116644
    Abstract: The invention describes a color-developing composition that contains at least three major components: (1) a leuco dye or a combination of leuco dyes, (2) an color-developer or a combination of color-developers that can form colored complexes with the leuco dyes, and (3) a desensitizer to temporarily remove the effect of the developer so the leuco dye appears in its colorless form. An optional binder may be included so that the composition may be applied to a substrate as an ink. The ink composition may be applied to synthetic polymeric substrates and other substrates that are incorporated into absorbent articles or personal care products.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 9, 2013
    Inventors: Ning Wei, Xuedong Song, JinHo Ryu, JunMo Gil
  • Patent number: 8419846
    Abstract: According to one embodiment, an erasable inkjet ink includes a leuco dye, a non-water-soluble developer, and a solvent containing an alcohol and water. The amount of the water is 7 to 25% by mass of the solvent.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: April 16, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Kenji Sano, Yumiko Sekiguchi, Satoshi Takayama, Takeshi Gotanda
  • Patent number: 8308860
    Abstract: A laser-markable composition comprises a marking component and an organic compound, wherein the organic compound absorbs laser radiation at 780 to 2000 nm and thereby causes the marking component to change color, and wherein the organic compound has an absorptivity ratio, A r, of at least 1.25, wherein the absorptivity ratio is defined as formula (I): wherein: Ap780-2000 nm is an absorbance peak in the wavelength region of 780 to 2000 nm; and Aave600-700 nm is the average absorbance in the wavelength region of 400 to 700 nm.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: November 13, 2012
    Assignee: Datalase Ltd.
    Inventor: Anthony N Jarvis
  • Patent number: 8277696
    Abstract: The present invention relates to a thermochromic color-memory composition comprising a solubilized mixture of (I) an electron donating coloring organic compound, (II) an electron accepting compound and (III) an ester compound represented by the following formula (1) as a reaction medium which controls color reactions of the components (I) and (II): wherein R represents an alkyl group having 1 to 21 carbon atoms or an alkenyl group having 1 to 21 carbon atoms, and n represents an integer of from 1 to 3.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: October 2, 2012
    Assignee: The Pilot Ink Co., Ltd.
    Inventor: Yoshiaki Ono
  • Publication number: 20100272924
    Abstract: A polymerizable cholesteric liquid crystal composition in the invention includes at least one compound selected from the group consisting of a polymerizable ester compound (1) having a residue of a hydrolysate of ?-oryzanol (A) and having a ring structure, a polymerizable ester compound (2) having a residue of a hydrolysate of ?-oryzanol (A) and having no ring structures, and a polymerizable ester compound (3) having a residue of a hydrogenated product of ?-oryzanol.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 28, 2010
    Applicants: CHISSO CORPORATION, CHISSO PETROCHEMICAL CORPORATION
    Inventor: MAYUMI TANABE
  • Patent number: 7815723
    Abstract: A no-mess water-based ink including a composition including water, an organic solvent, a coloring agent dissolved in the organic solvent, an emulsifier and a thickening agent for use in conjunction with a specially treated substrate containing a color developer.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: October 19, 2010
    Assignee: Crayola LLC
    Inventors: Jie Li, Leena Vadaketh, Jacqueline Aseng
  • Patent number: 7727319
    Abstract: A no-mess water-based ink including a composition including water, an organic solvent, a coloring agent dissolved in the organic solvent and an emulsifier for use in conjunction with a specially treated substrate containing a color developer.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: June 1, 2010
    Assignee: Crayola LLC
    Inventors: Jie Li, Leena Vadaketh, Jacqueline Aseng
  • 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: 7569515
    Abstract: An erasable image forming material includes a color former containing crystal violet lactone, a developer, a first binder resin of styrene-butadiene copolymer and a second binder resin of a styrene-based resin containing ?-methylstyrene, the first and second binder resins being in a compatible state.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: August 4, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Satoshi Takayama, Kenji Sano, Takeshi Gotanda, Yumiko Sekiguchi
  • Patent number: 7557065
    Abstract: The invention provides a heat-sensitive recording material, which is highly sensitive, is almost free of staining on the background, and gives a recorded image excellent in stability during storage, by using a finely divided sensitizer dispersion excellent in shelf stability produced in a short time with high volumetric efficiency. The invention relates to a method of producing a sensitizer dispersion, which comprises emulsifying and finely dividing a heat-sensitive recording sensitizer by melting under heating in an aqueous emulsifying dispersant, and then crystallizing the finely divided emulsified dispersion under rapid cooling, wherein the sensitizer is at least one member selected from the group consisting of 1,2-bis(phenoxy)ethane, 1,2-bis(3-methylphenoxy)ethane, 1,2-bis(4-methylphenoxy)ethane, p-benzylbiphenyl, di-p-methylbenzyl oxalate, and ?-naphthyl benzyl ether.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: July 7, 2009
    Assignee: Sanko Co., Ltd.
    Inventors: Shigeru Oda, Eiji Kawabata, Takaaki Mori, Tjang Kie Tan, Hiroshi Sumitomo, Yoshito Nakagawa
  • Patent number: 7550101
    Abstract: Exemplary electrophoretic ink capsules for electrophoretic displays, and methods for making the exemplary electrophoretic ink capsules are disclosed. In various embodiments, the electrophoretic ink capsules can include triboelectrically charged electrophoretic particles having higher electrical conductivity than conventionally charged electrophoretic particles allowing fabrication of electrophoretic displays with lower switching fields and faster response times.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: June 23, 2009
    Assignee: Xerox Corporation
    Inventors: San-Ming Yang, Naveen Chopra, Gabriel Iftime, Ahmed Alzamly, Man-Chung Tam, Peter Kazmaier
  • Publication number: 20090050013
    Abstract: A thermochromic coloring color-memory composition which comprises a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) an ester compound represented by the specific formula as a reaction medium which controls color reactions of the components (A) and (B).
    Type: Application
    Filed: October 22, 2008
    Publication date: February 26, 2009
    Applicant: THE PILOT INK CO., LTD.
    Inventor: Katsuyuki Fujita
  • Patent number: 7494537
    Abstract: A thermochromic coloring color-memory composition comprising a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a compound represented by the specific formula as a reaction medium which controls color reactions of the components (A) and (B).
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: February 24, 2009
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Yoshiaki Ono, Katsuyuki Fujita
  • Patent number: 7455400
    Abstract: The invention is to provide an aqueous ink, a recorded image and a recording method capable of improving an image fastness and a color-developing property of a recorded image, and is featured in that components of the aqueous ink are so prepared as to realize, at least on a surface portion of a recording medium, a fixed state of an ink droplet in which a contour portion of a second coloring material is formed around a central portion in which a first coloring material is fixed.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: November 25, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Nagashima, Sadayuki Sugama, Masako Udagawa
  • Publication number: 20080138519
    Abstract: The invention provides a recording ink containing a colorant, a wetting agent, a surfactant, a penetrating agent, and water, wherein when the specified moisture evaporation rate of the recording ink is less than 30% the specified viscosity elevating rate of the recording ink is 10 or less; when the moisture evaporation rate is 30% to 50%, there is a point at which the viscosity elevating rate is more than 500; and when the moisture evaporation rate is less than 30%, the average particle diameter of the colorant in the recording ink is two times or less the initial average particle diameter of the colorant before the moisture evaporation test of the recording ink.
    Type: Application
    Filed: August 4, 2005
    Publication date: June 12, 2008
    Applicant: RICOH COMPANY, LTD
    Inventors: Hisashi Habashi, Kiyofumi Nagai, Akiko Bannai
  • Patent number: 7329630
    Abstract: Compositions and methods for production of color images having increased light stability and reduced browning are described. The color forming composition can include a leuco dye, an infrared absorber, and at least one of a stabilizer and an anti-fade agent. The color forming compositions can be stabilized such that less than about a 30% decrease in optical density occurs over a three year period. The stabilizers can include chroman, thiolane-nickel complexes, spiroindanes, while suitable anti-fade agents can include vitamin E, vitamin E analogs, astaxanthin, chroman, ascorbic acid, carotene, and mixtures thereof. The color forming compositions are ambient light stable and are useful in forming images on a wide variety of substrates such as optical disks.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: February 12, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Makarand P. Gore
  • Publication number: 20080022888
    Abstract: A ready to use skin marking stain/applicator for use in inhibiting voter fraud requiring only the addition of water, includes a open top container with a measured quantity of dry water soluble stain producing compound disposed therein. The compound, when dissolved in water, filling the container, is capable of reacting with the organic materials on the person's finger, to produce within a relatively short time, a semipermanent, highly visible, stain, on the finger. A substantially impermeable removable cover is secured over the open top of the container to inhibit the ingress of moisture into the container prior to its use.
    Type: Application
    Filed: July 27, 2006
    Publication date: January 31, 2008
    Inventor: Douglas C. Arndt
  • Publication number: 20070270310
    Abstract: In one aspect, a method includes directing electromagnetic radiation to a structure, the structure including a substrate, a first layer, and a marking composition between the substrate and the first layer. At least a portion of the electromagnetic radiation is transmitted through the first layer, and the structure is marked.
    Type: Application
    Filed: May 22, 2006
    Publication date: November 22, 2007
    Inventors: David H. Blank, Benjamin J. Brown, Michael P. Secord, James W. Foley
  • Patent number: 7214145
    Abstract: Disclosed is a photochromic golf ball with a one- or multi-piece structure, which comprises a photochromic compound. The photochromic golf ball reversibly changes between two different color states according to exposure to U.V. radiation associated with direct sunlight. The photochromic golf ball is white when it is shielded from direct sunlight, but changes in color when it is directly exposed to direct sunlight. In a golf ball structure having a core, an outer cover, and a transparent coating, the photochromic compound is present either in the outer cover or the transparent coating.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: May 8, 2007
    Assignee: Fantom Company, Ltd.
    Inventors: Yang Hwan Park, Kyung Jung Kang, Gwang Hee Lee, Jung Gyu Moon, Chun Bea Ryu
  • Patent number: 7147801
    Abstract: Disclosed is an ink composition suitable for ink jet printing comprising a luminescent compound, a solvent, and an energy active compound, and optionally a non-luminescent colorant. The energy active compound, when exposed to energy, generates one or more active species that can react with the luminescent compound to alter one or more of the characteristics of the luminescent compound. The luminescent compound can be colored or colorless. Also disclosed is a method for marking substrates comprising providing a mark comprising a luminescent compound and an energy active compound. Further disclosed is a jet ink composition suitable for printing on substrates authentication or security marks which can be rendered unreadable. The luminescence of the mark is quenched and the visible color is changed when irradiated with a light.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: December 12, 2006
    Assignee: Videojet Technologies Inc.
    Inventors: Michael Kozee, Steven D. Looman, John P. Folkers
  • Patent number: 7118207
    Abstract: Ink for use in an ink-jet color recording apparatus and a plurality of kinds of small microcapsules dispersed in the solvent, each small microcapsule having an outer shell destroyable with ultrasonic waves of a predetermined resonant frequency, each small microcapsule containing a color former within its outer shell with the outer surface of the outer shell covered with a developer. The plurality of kinds of small microcapsules are destroyed selectively with the corresponding predetermined stimuli to thereby produce magenta, cyan, yellow or black. The ink is colorless before producing the color. The ink-jet color recording apparatus irradiates the plurality of small microcapsules with ultrasonic waves of a selected frequency corresponding to a desired color to thereby change the color of the ink on a path through which the ink is fed from a color ink feeding device to an ink cartridge.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: October 10, 2006
    Assignees: Casio Computer Co., Ltd., Casio Electronics Manufacturing Co., Ltd.
    Inventors: Hideki Takahashi, Kenichiro Asako, Koichi Kamei, Shigeru Shimizu
  • Patent number: 7060654
    Abstract: A coating includes an antenna uniformly distributed in both a matrix and a leuco-dye phase of the coating. A method for preparing an imaging material includes providing a powder having an activator and an antenna, dissolving the activator/antenna powder to form an activator/matrix pre-polymer solution, providing a leuco-dye alloy, and dispersing the leuco-dye alloy into the activator/matrix pre-polymer solution to form a radiation-curable paste. An image-recording medium includes a matrix having an antenna and an activator, and an alloy dispersed in the matrix as an independent phase. The alloy includes an antenna, a leuco-dye, and an accelerator.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: June 13, 2006
    Assignee: Hewlett-Packard Development Company
    Inventors: Vladek P Kasperchik, Makarand P. Gore, Marshall Field, Jayprakash Bhatt
  • Patent number: 7018953
    Abstract: Disclosed herein are compositions, systems, and methods for making a labeling systems capable of being labeled using either electromagnetic radiation, or ink, or both.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: March 28, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Makarand P. Gore, Cari Dorsh, Mark W. Minne
  • Patent number: 6984418
    Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: January 10, 2006
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Akio Nakashima, Hisayoshi Kato
  • Patent number: 6893488
    Abstract: A printing compound suitable for recording unique surface characteristics of an object such as a person's finger, palm or foot, tire tread or shoe sole, on a porous medium such as paper, is composed of (1) a composition, e.g., printer's ink, capable of delineating such surface characteristics when transferred to the porous medium by itself or in conjunction with a separate reagent and (2) a sufficient amount of water dispersable nonionic surfactant to render the composition substantially soluble in water without adversely affecting the ability of the composition to delineate the surface characteristics when transferred to the porous medium.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: May 17, 2005
    Assignee: Armor Holdings Forensics, Inc.
    Inventor: Douglas C. Arndt
  • Patent number: 6860927
    Abstract: The invention relates to polymer beads comprising an anisotropic polymer material with helically twisted structure, to their use in reflective films, spraying or printing inks or as pigments, for optical or electrooptical, decorative or security applications, to a reflective film comprising one or more polymer beads in a transmissive binder, and to a security marking or security device comprising one or more polymer beads or comprising a reflective film.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: March 1, 2005
    Assignee: Merck Patent GmbH
    Inventors: Matthias Kuntz, David Coates, Simon Greenfield, John Patrick
  • Patent number: 6830707
    Abstract: A temperature indicating material of the present invention includes at least an electron donating compound, an electron accepting compound, a reversible material causing reversible transformation between crystal and amorphous states, or reversible transformation between phase separation and non-phase-separation, with respect to a part or all of the composition system; and a temperature characteristic controller having a solid-state in room temperature and at least a part of the temperature characteristic controller dissolves in the electron accepting compound, the reversible material, or the electron accepting compound and the reversible material so as to change the speed of the reversible transformation between crystal and amorphous, or speed of the reversible transformation between phase separation and non-phase-separation, with respect to the composition system, by its reversible transformation between crystal and amorphous states, or the speed of the reversible transformation between phase separation and
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: December 14, 2004
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Toshiyuki Tamura, Takayuki Hiyoshi, Yuichiro Hatanaka
  • Patent number: 6770687
    Abstract: A water-based security printing ink is provided with two means of security. The use of a variable light absorbing and/or transmitting pigment or dye is a first security and a water repelling agent is provided as a second security. Visible images can be generated from the printed ink upon exposure to UV or infrared light. The water repelling agent renders the image waterproof and differentiates the printed image from the substrate, which allows the image to be detected upon exposure to water or other aqueous mixture. Suitable inks can be used in conventional printing methods, such as jet printing, lithography, offset printing and impact printing. Also provided are substrates imaged with these security printing inks.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: August 3, 2004
    Assignee: NCR Corporation
    Inventors: Yaoping Tan, Maurice W. Lewis
  • Publication number: 20040116213
    Abstract: There are described articles bearing indicia applied with an ink composition which comprises two or more color-changing or color-forming components which combine, or become diluted, upon exposure to water for a sufficient period of time to cause a change in the appearance of the indicia. Also described are printing ink compositions for forming such indicia and methods for forming such articles.
    Type: Application
    Filed: December 5, 2003
    Publication date: June 17, 2004
    Inventors: Michael P. Filosa, Fariza B. Hasan, Stephen J. Telfer
  • Patent number: 6721083
    Abstract: An electrophoretic display comprises a fluid and a plurality of nanoparticles having diameters substantially less the wavelengths of visible light such that, when the nanoparticles are in a dispersed state and uniformly dispersed throughout the fluid, the fluid presents a first optical characteristic, but when the nanoparticles are in an aggregated state in which they are gathered into aggregates substantially larger than the individual nanoparticles, the fluid presents a second optical characteristic different from the first optical characteristic. The electrophoretic display further comprises at least one electrode arranged to apply an electric field to the nanoparticle-containing fluid and thereby move the nanoparticles between their dispersed and aggregated states. Various compound particles comprising multiple nanoparticles, alone or in combination with larger objects, and processes for the preparation of such compound particles, are also described.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: April 13, 2004
    Assignee: E Ink Corporation
    Inventors: Joseph M. Jacobson, Anthony E. Pullen, Thomas H. Whitesides, Paul S. Drzaic, Ian D. Morrison, Jianna Wang, Caprice L. Gray
  • Patent number: 6669765
    Abstract: A thermochromic dry offset ink comprising a dry offset ink medium and a thermochromic pigment material dispersed therein, wherein the thermochromic pigment material is a pigment material which has a microcapsular form having non-round particle cross section and has a thermochromic material enclosed in the microcapsules. Also disclosed is a printed article produced using the ink. The thermochromic dry offset ink can more improve pressure resistance and heat resistance and also can more satisfy uniform printability and high-speed continuous printability in offset printing especially on articles such as containers.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: December 30, 2003
    Assignee: The Pilot Ink Co., Ltd.
    Inventors: Kuniyuki Senga, Masahiro Ito
  • Patent number: 6620227
    Abstract: A UV curable CF ink composition is provided which is formed from a UV curable ink base, an acidic color developer, and a solvent. The UV curable CF ink composition may be applied to a substrate inline on a printing press using conventional letterpress or offset techniques without discoloration or smudging of the ink.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: September 16, 2003
    Assignee: The Standard Register Company
    Inventors: Gary W. Doll, Rajendra Mehta
  • Publication number: 20030096113
    Abstract: An electrophoretic display comprises a fluid and a plurality of nanoparticles having diameters substantially less the wavelengths of visible light such that, when the nanoparticles are in a dispersed state and uniformly dispersed throughout the fluid, the fluid presents a first optical characteristic, but when the nanoparticles are in an aggregated state in which they are gathered into aggregates substantially larger than the individual nanoparticles, the fluid presents a second optical characteristic different from the first optical characteristic. The electrophoretic display further comprises at least one electrode arranged to apply an electric field to the nanoparticle-containing fluid and thereby move the nanoparticles between their dispersed and aggregated states. Various compound particles comprising multiple nanoparticles, alone or in combination with larger objects, and processes for the preparation of such compound particles, are also described.
    Type: Application
    Filed: November 4, 2002
    Publication date: May 22, 2003
    Applicant: E Ink Corporation
    Inventors: Joseph M. Jacobson, Anthony E. Pullen, Thomas H. Whitesides, Paul S. Drzaic, Ian D. Morrison, Jianna Wang, Caprice L. Gray
  • Patent number: 6566302
    Abstract: A monophase solid solution comprising a plurality of color formers selected from the group consisting essentially of the fluoran type, phthalide type, phenoxazine type, phenothiazine type, rhodamine lactam type, leuco-auramine type, triphenylmethane type, spiropyran type, benzoxazine type, quinazoline type of color formers and mixtures thereof, preferably wherein the color forming materials are selected from the fluoran and phthalide type of color former and mixtures thereof.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: May 20, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: James Philip Taylor, Michael Heneghan
  • Patent number: 6517618
    Abstract: Disclosed is an electrophoretic ink comprising a suspending fluid and, suspended in the suspending fluid, a plurality of particles comprising a mixture of a chelating agent and a spiropyran material of the formula wherein n is an integer representing the number of repeat —CH2— units and R is —H or —CH═CH2, the particles being free to migrate within the suspending fluid under the influence of an electric field.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: February 11, 2003
    Assignee: Xerox Corporation
    Inventors: Daniel A. Foucher, Raj D. Patel, Naveen Chopra, Peter M. Kazmaier, James Wojtyk, Erwin Buncel
  • Patent number: 6500245
    Abstract: A thermoresponsive coloring formulation for use on a reimageable image carrier is provided. An image may be created by exposing the thermoresponsive coloring formulation to heat and erased by exposing it to white light. A screen coated with an uncured stencil coating is placed in registration with the image carrier. The screen and image carrier are exposed to a curing agent which is prevented from passing beyond the image carrier in those areas covered by the image, while the areas of the coated screen that are exposed to the curing agent are hardened by the curing agent. After the stencil coating has been hardened in the desired areas, the screen is removed, and the uncured stencil coating is rinsed away from the screen, leaving a portion of the screen with open pores through which ink can flow.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: December 31, 2002
    Inventors: Geoffrey A. McCue, Sebastian V. Kanakkanatt
  • Patent number: 6489375
    Abstract: An Offset Lithographic Printing Process employing low VOC lithographic printing ink formulations containing monomeric diluents, curable by cationic polymerization in the presence of fountain solution and resin rheology modifiers compatible with cationic catalysts.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: December 3, 2002
    Assignee: Sun Chemical Corporation
    Inventors: Edward Stone, Gordon Kotora, Mikhail Laksin, Subhankar Chatterjee, Bhalendra J. Patel
  • Patent number: 6488750
    Abstract: An inkless fingerprint compound includes a solvent, a color former, such as a transistion metal salt, compatible with the solvent and a developer such as hydroxiquinoline and derivatives, the developer capable of reacting with the color former to form a colorant product, preferably black in color. A sufficient amount of a chelating agent, such as a carboxylic acid, is added to the solution to prevent the color former and developer from reacting while in solution to form the colorant product while permitting such reaction when the solution is applied to the fingerprint area of the person to be fingerprinted and deposited onto a paper substrate.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: December 3, 2002
    Assignee: Armor Holdings Forensics Inc.
    Inventor: Douglas C. Arndt
  • Publication number: 20020166477
    Abstract: An inkless fingerprint compound includes a solvent, a color former, such as a transistion metal salt, compatible with the solvent and a developer such as hydroxiquinoline and derivatives, the developer capable of reacting with the color former to form a colorant product, preferably black in color. A sufficient amount of a chelating agent, such as a carboxylic acid, is added to the solution to prevent the color former and developer from reacting while in solution to form the colorant product while permitting such reaction when the solution is applied to the fingerprint area of the person to be fingerprinted and deposited onto a paper substrate.
    Type: Application
    Filed: May 10, 2001
    Publication date: November 14, 2002
    Inventor: Douglas C. Arndt
  • Publication number: 20020152928
    Abstract: A method and a system is disclosed for affixing invisible or unobtrusive markings to mail pieces (4), and subsequently collecting information from the mail pieces for sorting purposes. The system includes the affixation of an optically contrasting layer (1) to a mail piece, the layer changing optically upon the application of a stimulus to present a contrasting background for imaging encoded information (3) applied over the layer and related to the mail piece.
    Type: Application
    Filed: January 30, 2002
    Publication date: October 24, 2002
    Inventors: Nabil M. Lawandy, Timothy J. Driscoll, Charles M. Zepp