Multiple Image Formation, Multiple Image Exposure, Or Simultaneous Radiant Energy Exposure Patents (Class 430/333)
  • Patent number: 9731533
    Abstract: A method of forming an image on a substrate by applying energy, involves a substrate in or on which there are at least two different color-change agents, i.e. a first color-change agent capable of giving rise to at least two different colors; and a second color-change agent capable of giving rise to at least one different color than achievable with the first color change agent. A preferred embodiment of the invention is a multi-layer laminate comprising, in order, a layer comprising the first agent, a barrier layer, and a layer comprising the second agent.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: August 15, 2017
    Assignee: DATALASE LTD.
    Inventors: Anthony N Jarvis, Christopher Anthony Wyres, William Green, Martin Robert Walker
  • Patent number: 8890055
    Abstract: A method of producing a solid-state imaging device includes the steps of forming on a substrate a photoelectric conversion portion that receives light on a light-receiving surface and that photoelectrically converts the received light to generate a signal charge, forming above the light-receiving surface an optical waveguide that guides light to the light-receiving surface, and forming above the optical waveguide a color filter which colors light and from which colored light is emitted to the optical waveguide, wherein, in forming the color filter, the color filter is formed from a photosensitive resin film containing a dye by performing an exposure process and then performing a development process on the film, and in forming the optical waveguide, a core portion of the optical waveguide is formed so that the core portion absorbs exposure light radiated onto the photosensitive resin film when the exposure process is performed.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: November 18, 2014
    Assignee: Sony Corporation
    Inventor: Akiko Ogino
  • Patent number: 8420282
    Abstract: A method for producing a color filter, comprising: applying to a substrate at least one diacetylene capable of undergoing a light-activated color change reaction, and exposing the substrate to light thereby causing the exposed regions of the substrate to change color. The invention also provides devices comprising colored filters such as liquid crystal displays.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: April 16, 2013
    Assignee: Datalase Ltd
    Inventors: Anthony N Jarvis, Martin Walker
  • Patent number: 8175370
    Abstract: A sharp image showing a thin projecting part is acquired without using a complex dyeing method, and the analysis accuracy is improved. An automatic cell analyzer (1) comprises: an imaging unit (4) for capturing fluorescence emitted from a cell (S) and acquiring a cell image; an exposure changing section (5) for changing the exposure condition when the imaging unit (4) captures cell images; and a processing section (5) for analyzing the cell (S) on the basis of a plurality of cell images respectively captured under the changed exposure conditions.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: May 8, 2012
    Assignee: Olympus Corporation
    Inventors: Kosuke Takagi, Yuichiro Matsuo, Yoshihiro Shimada
  • Patent number: 8132130
    Abstract: A method for forming exposure masks for imaging a target pattern having features to be imaged on a substrate in a multi-exposure process. The method includes the steps of generating a set of decomposition rules defining whether a given feature of the target pattern is assigned to a first exposure mask or a second exposure mask; applying the decomposition rules to each of the features in the target pattern so as to assign each of the features in the target pattern to one of the first exposure mask or second exposure mask; and generating the first exposure mask and the second exposure mask containing the respective features assigned to each mask.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: March 6, 2012
    Assignee: ASML Masktools B.V.
    Inventors: Jang Fung Chen, Duan-Fu Stephen Hsu, Douglas Van Den Broeke, Thomas Laidig
  • Patent number: 7820370
    Abstract: A multicolor direct thermal imaging method and an imaging member for use therein, wherein a multicolor image is formed in a thermal imaging member having at least two different image-forming compositions capable of forming two different colors. Heat is used to form an image in the first color at a first speed of travel of the thermal imaging member with respect to the source of heat, and heat is used to form an image in the second color at a second speed of travel of the thermal imaging member with respect to the source of heat, where the first speed of travel and the second speed of travel are different from each other.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: October 26, 2010
    Assignee: Zink Imaging, Inc.
    Inventors: Brian D. Busch, Fariza B. Hasan, Chien Liu, Stephen J. Telfer, William T. Vetterling
  • Patent number: 7771915
    Abstract: A two-photon absorbing optical recording material comprising at least one two-photon absorbing compound and a recording component is provided. Recording is made on it by utilizing the two-photon absorption of the two-photon absorbing compound in the material, and then the material is irradiated with light to thereby detect the difference in the reflectance between the recorded area and the unrecorded area thereof, and the recorded information is thereby reproduced from the material, and also provided are a photosensitive polymer composition and a photon-mode recording method for the material.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: August 10, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Masaharu Akiba, Takeharu Tani, Hiroo Takizawa, Yoshio Inagaki
  • 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: 7410750
    Abstract: A multicolored display and process for forming such a display is provided. The multicolored display includes marking particles comprising a mixture of photochromic materials. The photochromic materials each exhibit a first “invisible” photochromic state at a first absorption spectrum and at least a second “visible” photochromic state at a second absorption spectrum. The second “visible” photochromic state of each photochromic material produces a different color relative to the other photochromic materials. In embodiments, the marking particles include a mixture of a spiropyran material and a dithienylethene material.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: August 12, 2008
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Daniel A. Foucher, Raj D. Patel
  • Patent number: 7381504
    Abstract: A method and apparatus for manufacturing a color conversion filter. The method includes forming a color filter layer on a transparent substrate. A coloring matter layer containing color conversion coloring matter and an optical radical generating agent are formed on the substrate and the filter layer. The coloring matter layer is exposed to coloring matter decomposition light applied through the substrate and the filter layer. The coloring matter layer also is exposed to auxiliary ultraviolet light applied from the side of the coloring matter layer. This forms a color conversion layer at a position corresponding to the filter layer. The optical radical generating agent is heat vaporized. The color conversion coloring matter is decomposed by light whose wavelength is outside a range that the color filter layer transmits. The coloring matter decomposition light includes a wavelength component that decomposes the color conversion coloring matter.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: June 3, 2008
    Assignee: Fuji Electric Holdings Co., Ltd.
    Inventors: Koji Kawaguchi, Makoto Kobayashi, Kenya Sakurai
  • Patent number: 7314705
    Abstract: A composition, method, and system for recording an image. The system includes an imaging material in which radiation energy is absorbed by an antenna material. The antenna material may be chosen from the group consisting of phthalocyanines and naphthalocyanines.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: January 1, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Makarand P. Gore
  • Patent number: 7202006
    Abstract: A reimageable recording medium includes a substrate, a display layer, and a protective layer. The protective layer comprises a microencapsulated diarylethene material that is capable of switching between a UV absorbing and UV transparent state. During an imaging process, the protective layer is switched from a UV absorbing state to a UV transparent state to allow UV light of a sufficient wavelength to convert a photochromic material of the display layer to a colored state to form an image. The protective material is then switched back to a UV absorbing state to prevent the UV light component from a reading source to convert unimaged areas of the display layer to change color, which would reduce the contrast and resolution of the imaged medium.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: April 10, 2007
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Gabriel Iftime, Peter M. Kazmaier
  • Patent number: 7169542
    Abstract: A composition, method, and system for recording an image. The system includes a multiphase imaging material in which energy is absorbed by an antenna material. The absorbed energy causes the reaction of an activator and a color-forming material.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: January 30, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Vladek Kasperchik, Makarand Gore
  • Patent number: 7166420
    Abstract: A protective, switchable layer adapted for use in transient imageable documents is disclosed. The protective layer can be disposed on an underlying photochromic layer and enables writing or imaging the underlying layer. The protective layer prevents unintentional writing on the photochromic layer, such as can otherwise occur from exposure to certain wavelengths of light.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: January 23, 2007
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Hadi Mahabadi, Peter M. Kazmaier, Gabriel Iftime
  • Patent number: 7029833
    Abstract: An image display medium that includes a photoconductive layer containing a photochromic compound and an electron accepting compound; and a substrate, in which the photochromic compound contains a fulgide compound, and the electron accepting compound contains a compound selected at least from: a) a phosphonic acid compound having an aliphatic group containing 12 or more carbon atoms; b) an aliphatic carboxylic acid compound having an aliphatic group containing 12 or more carbon atoms; and c) a phenolic compound having an aliphatic group containing 12 or more carbon atoms, a process for forming an image using the medium, and a multicolor image-forming apparatus using the medium and suitable for the process.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: April 18, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyuki Takahashi, Shigenobu Hirano, Ikue Kawashima
  • Patent number: 7026103
    Abstract: A multilayer imageable article with at least two layers including a multiphoton imageable composition. The composition includes a multiphoton-sensitive photoactive system and at least one of a dye and a dye precursor. The photoactive system includes a multiphoton sensitizer capable of simultaneously absorbing at least two photons, an electron acceptor capable of transformation to a dye-activating species upon interaction with the multiphoton sensitizer subsequent to absorption of at least two photons, and optionally an electron donor.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: April 11, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Robert J. DeVoe, Robert D. DeMaster, Brook F. Duerr, Jonathan P. Kitchin, Dennis E. Vogel
  • Patent number: 6989221
    Abstract: A photographic article. According to one embodiment, the photographic article comprises: a first image area comprising a photographic film negative of an image; and a second image area, different than the first image area, comprising a positive image of the image.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: January 24, 2006
    Assignee: Eastman Kodak Company
    Inventors: Ronald M. Wexler, Jeffrey L. Hall, Kenneth A. Parulski
  • Patent number: 6881525
    Abstract: A simplified method of manufacturing a color-converting filter is disclosed which permits highly detailed patterning. Color filter layers are formed on a transparent substrate, a colorant layer containing a color-converting colorant is formed on the color filter layers, and the colorant layer is exposed via the transparent substrate and the color filter layers using colorant-decomposing light. Color-converting layers are formed in positions corresponding to the color filter layers. The color-converting colorant is decomposed by light outside the wavelength region transmitted by the color filter layers. The colorant-decomposing light contains a wavelength component that decomposes the color-converting colorant, and the color-converting layers emit, through wavelength distribution conversion, light that will be transmitted by the color filter layers.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: April 19, 2005
    Assignee: Fuji Electric Holdings Co., Ltd.
    Inventors: Koji Kawaguchi, Makoto Kobayashi, Kenya Sakurai
  • Publication number: 20040076909
    Abstract: A process is provided for producing a polymeric layer having a desired image thereon or a three dimensional article comprising a number of such layers in which a layer of a liquid photocurable composition which comprises photo colourable particles is cured by light and selected areas thereof are irradiated with light of a different dose, thereby forming the desired image which composition comprises particles dispersed in it which are micro-capsules containing a photosensitive colour changing composition within a barrier layer which is substantially impermeable to the components of the colour changing composition or are solid particles comprising an immobilised photosensitive colour changing composition. The process permits the use of the same initiating mechanism to cure the resin and to change the colour of the particles.
    Type: Application
    Filed: October 10, 2003
    Publication date: April 22, 2004
    Inventors: Dianne Beth Shirley, Ian Malcolm Shirley, Ajay Haridas Popat, Martin Russell Edwards, Kevin Thomas McAloon, Herbert Benson Scher
  • Patent number: 6696229
    Abstract: Photographic process, in which a substrate comprising a plurality of superimposed layers of photochromic materials sensitive to different light wavelengths is provided. The object to be photographed is scanned and a digital file defining the image of the object is generated from the scanning. A plurality of sources of laser light having different wavelengths, each of which is the wavelength to which one of the photochromic materials is sensitive is provided and the layers of photochromic materials are irradiated by means of the laser beams produced by the sources, according to a program determined by the digital file, whereby to develop in each pixel of the substrate the color that it has in the image. The colors thus generated in the pixels of the substrate layers; and the background areas of the substrate layers are set.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: February 24, 2004
    Assignee: Kromotek, Ltd.
    Inventors: Shlomo Dukler, Jacob Hassan, Yaron Meerfeld
  • Patent number: 6649311
    Abstract: A process is provided for producing a polymeric layer having a desired image thereon or a three dimensional article comprising a number of such layers in which a layer of a liquid photocurable composition which comprises photo colorable particles is cured by light and selected areas thereof are irradiated with light of a different dose, thereby forming the desired image which composition comprises particles dispersed in it which are micro-capsules containing a photosensitive color changing composition within a barrier layer which is substantially impermeable to the components of the color changing composition or are solid particles comprising an immobilized photosensitive color changing composition. The process permits the use of the same initiating mechanism to cure the resin and to change the color of the particles.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: November 18, 2003
    Assignee: Vantico Limited
    Inventors: Dianne Beth Shirley, Ian Malcolm Shirley, Ajay Haridas Popat, Martin Russell Edwards, Kevin Thomas McAloon, Herbert Benson Scher
  • Publication number: 20020182532
    Abstract: The present invention uses a thermal transfer film in combination with a thermally sensitive color developing paper. The hue of the thermal transfer ink layer or the hue of the developed color of the color developing paper can be recorded on the color developing paper when the applied energy is low, and a plurality of colors can be recorded on the color developing paper by color mixture of the transfer from the thermal transfer ink layer and the developed color of the color developing paper when the applied energy is high.
    Type: Application
    Filed: June 26, 2002
    Publication date: December 5, 2002
    Inventor: Masafumi Hayashi
  • Patent number: 6455221
    Abstract: The present invention uses a thermal transfer film in combination with a thermally sensitive color developing paper. The hue of the thermal transfer ink layer or the hue of the developed color of the color developing paper can be recorded on the color developing paper when the applied energy is low, and a plurality of colors can be recorded on the color developing paper by color mixture of the transfer from the thermal transfer ink layer and the developed color of the color developing paper when the applied energy is high.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: September 24, 2002
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Masafumi Hayashi
  • Patent number: 6416922
    Abstract: The present invention related to an azomethine dye precursor represented by the following general formula (1) and the image-forming material and image-forming method using the azomethine dye precursor: wherein Ar represents an aryl group or a heterocyclic group which may each have a substituent; X represents a bivalent group linking a carbon atom and a nitrogen atom; and Cp represent a coupler residue which may or may not form a ring.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: July 9, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Sato, Masatoshi Yumoto, Yoshimitsu Arai, Hirotaka Matsumoto
  • Patent number: 6398981
    Abstract: The present invention is concerned with photopolymer materials sensitive to infrared, near infrared, red and green light radiation for initiating polymerization and to applications of such photopolymer, like holographic polymer dispersed liquid crystal (H-PDLC) or reversible dye doped photopolymer (RDDP) materials, for making optical devices. The invention relates to holographic polymer dispersed liquid crystal and reversible dye materials having improved electrical and optical switching properties.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: June 4, 2002
    Assignee: Universite Laval
    Inventors: Tigran Galstian, Amir Tork
  • Patent number: 6309797
    Abstract: Selectively colorable polymerizable compositions and a method for forming selectively colored polymeric bodies using such compositions are disclosed. In accordance with the invention, a selectively colorable polymerizable composition comprising both a leucobase color former and a leuconitrile color former is irradiated with light of a particular wavelength and specific intensity for a specified duration. Exposure to actinic radiation cures the composition and activates the color formers. The irradiation dosage can be varied to selectively color the polymeric body whereby the resultant color of any particular area depends on the exposure dose received at that location. By varying the dose, a polymeric body can be prepared having distinctly colored elements at specific locations.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: October 30, 2001
    Assignee: Spectra Group Limited, Inc.
    Inventors: Oleg V. Grinevich, John H. Malpert, Alexandre Mejiritski, Douglas C. Neckers
  • Patent number: 6306565
    Abstract: A laser beam is applied to a thermosensitive recording medium including a thermosensitive recording layer disposed on a support base and made of an organic material capable of locally causing a density change commensurate with a change in thermal energy, at a scanning speed of at least 5 m/s for increasing the temperature in the thermosensitive recording layer to record a gradation image thereon with high sensitivity. A sharp temperature gradient is produced along the thickness of the thermosensitive recording layer, so that a density distribution along the depth of the thermosensitive recording layer is developed. Therefore, a high-quality gradation image can be formed without producing any density irregularities caused by thickness irregularities of the thermosensitive recording layer.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: October 23, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shinji Imai
  • Publication number: 20010019806
    Abstract: The present invention related to an azomethine dye precursor represented by the following general formula (1) and the image-forming material and image-forming method using the azomethine dye precursor: wherein Ar represents an aryl group or a heterocyclic group which may each have a substituent; X represents a bivalent group linking a carbon atom and a nitrogen atom; and Cp represent a coupler residue which may or may not form a ring.
    Type: Application
    Filed: January 29, 2001
    Publication date: September 6, 2001
    Inventors: Hiroshi Sato, Masatoshi Yumoto, Yoshimitsu Arai, Hirotaka Matsumoto
  • Patent number: 6275604
    Abstract: A computer implemented method and an apparatus for generating exposure data of a layout pattern used to fabricate semiconductor integrated circuits. The layout pattern is first analyzed to determine if it can be modified to one or more predefined patterns without having to segment the layout pattern into rectangular patterns. The layout pattern is then modified to the one or more predefined patterns. The modified pattern is also analyzed to determine if it can be modified into segmental block patterns and if so, it is modified accordingly. Finally, exposure data is generated using the modified segmental block patterns.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: August 14, 2001
    Assignee: Fujitsu Limited
    Inventors: Masaaki Miyajima, Yoshio Ito
  • Publication number: 20010004509
    Abstract: The present invention uses a thermal transfer film in combination with a thermally sensitive color developing paper. The hue of the thermal transfer ink layer or the hue of the developed color of the color developing paper can be recorded on the color developing paper when the applied energy is low, and a plurality of colors can be recorded on the color developing paper by color mixture of the transfer from the thermal transfer ink layer and the developed color of the color developing paper when the applied energy is high.
    Type: Application
    Filed: December 6, 2000
    Publication date: June 21, 2001
    Inventor: Masafumi Hayashi
  • Patent number: 6242154
    Abstract: A process for generation of acid uses a medium comprising a first acid-generating component capable of generating a first acid, and a secondary acid generator, this secondary acid generator being capable of thermal decomposition to form a secondary acid, the thermal decomposition of the secondary acid generator being catalyzed by the first acid. At least part of the medium is exposed to so as to cause formation of the first acid from the first acid-generating component; and the medium is then heated to cause, in the exposed part of the medium, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the secondary acid.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: June 5, 2001
    Assignee: Polaroid Corporation
    Inventors: Jurgen M. Grasshoff, John L. Marshall, Richard A. Minns, Socorro M. Ramos, Stephen G. Stroud, Stephen J. Telfer, Haixin Yang, Roger A. Boggs, Eric S. Kolb
  • Patent number: 6159650
    Abstract: A printing method directed to a plurality of pieces of slip paper which have been bound into a book and to the outer surface, of which ink containing an initiator and either one of coloring matter and a precursor of coloring matter is applied are placed. A printing plate has a through portion through which radiation penetrates and whose shape corresponds to a pattern to be printed. The printing plate is placed ont he stacked slip paper and X-rays are irradiated upon the printing plate fro the above direction so as to print the pattern of a character on each pieces of the slip paper at a desired are thereof.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: December 12, 2000
    Assignee: Kokuyo Co., Ltd.
    Inventors: Keiji Kai, Takaaki Kiyose
  • Patent number: 6110638
    Abstract: A process for generation of acid uses a medium comprising a first acid-generating component capable of generating a first acid, and a secondary acid generator, this secondary acid generator being capable of thermal decomposition to form a secondary acid, the thermal decomposition of the secondary acid generator being catalyzed by the first acid. At least part of the medium is exposed to so as to cause formation of the first acid from the first acid-generating component; and the medium is then heated to cause, in the exposed part of the medium, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the secondary acid.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: August 29, 2000
    Assignee: Polaroid Corporation
    Inventors: Roger A. Boggs, Jurgen M. Grasshoff, Eric S. Kolb, John L. Marshall, Richard A. Minns, Socorro M. Ramos, Stephen G. Stroud, Stephen J. Telfer, Haixin Yang
  • Patent number: 6107010
    Abstract: A method for printing on an exposed polymerised thermoplastic or curable layer of the body of a portable data medium, and a portable data medium particularly a chip card, comprising a polymerised layer, are disclosed. The method comprises the steps of mixing a polymerisable thermoplastic or curable binder and at least one light-sensitive compound responsive to laser radiation having a predetermined wavelength in such a way that it changes from a first state to a second coloured state, in order to form a mixture, exposing the mixture to the laser radiation having a predetermined wavelength; and polymerising the mixture to form the polymerised layer of the body of the data medium. The method is particularly suitable for printing on smart cards.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: August 22, 2000
    Assignee: Gemplus S.C.A.
    Inventors: Isabelle Corniglion, Armand Gellis, Robert Guguelmetti, Christian Leriche, Paul Morgavi, Andre Samat
  • Patent number: 6022648
    Abstract: Thermochromic materials are incorporated into constructions that facilitate accurate reproductions of monochrome or full-color images having multiple gray levels. The invention utilizes thermochromic materials having different transition temperatures to facilitate their selective activation. The materials may be located in a single layer of a recording sheet, or in multiple layers. The invention also comprises thermal printing apparatus useful in imaging the foregoing constructions, particularly those exhibiting hysteresis.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: February 8, 2000
    Assignee: Massachusetts Institute of Technology
    Inventors: Joseph M. Jacobson, V. Michael Bove, Jr.
  • Patent number: 6004719
    Abstract: A process for producing an image uses an imaging medium comprising an acid-generating layer or phase comprising a mixture of a superacid precursor, a sensitizing dye and a secondary acid generator, and a color-change layer comprising an image dye. The sensitizing dye has first and second forms, the first form having substantially greater substantial absorption in a first wavelength range than the second form. The superacid precursor is not capable, in the absence of the first form of the sensitizing dye, of being decomposed by radiation in the first wavelength range. The secondary acid generator is capable of thermal decomposition, catalyzed by superacid, to form a secondary acid. While at least part of the sensitizing dye is in its first form, the medium is imagewise exposed to radiation in the first wavelength range, thereby causing, in the exposed areas of the acid-generating layer, the formation of superacid.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: December 21, 1999
    Assignee: Polaroid Corporation
    Inventors: Russell A. Gaudiana, Robert W. Haddock, Serajul Haque, Iris B. Kliman Bloom, John L. Marshall, Socorro M. Ramos, Larry C. Takiff, Stephen J. Telfer, Michael A. Young
  • Patent number: 6001529
    Abstract: The speed at which a thermosensitive recording medium is scanned with a laser beam is selected to be 5 m/s or higher to increase the temperature of a thermosensitive layer of the thermosensitive recording medium for recording a gradation image thereon with high sensitivity. A sharp temperature gradient is produced along the thickness of the thermosensitive layer, so that a density gradient along the thickness of the thermosensitive layer is developed, therefore, a high-quality image can be recorded without producing any density irregularities caused by thickness irregularities of the thermosensitive layer.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: December 14, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shinji Imai
  • Patent number: 5919608
    Abstract: The sensitivity to radiation of combinations of cationic electron acceptors (such as phosphonium, sulfonium, diazonium and iodonium salts) with sensitizing dyes, which sensitize these cationic electron acceptors to wavelengths (typically visible wavelengths) to which they are not sensitive in the absence of the dye, can be increased by including with the cationic electron acceptor and the sensitizing dye a supersensitizer which has an oxidation potential lower than that of the sensitizing dye, the supersensitizer being an ionic compound having a cation comprising an ionic grouping, said grouping comprising at least one atom of an element from Group VB, VIB or VIIB of the Periodic Table.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: July 6, 1999
    Assignee: Polaroid Corporation
    Inventors: Serajul Haque, John L. Marshall, Stephen J. Telfer
  • Patent number: 5914213
    Abstract: A process for generation of acid uses a medium comprising a first acid-generating component capable of generating a first acid, and a secondary acid generator, this secondary acid generator being capable of thermal decomposition to form a secondary acid, the thermal decomposition of the secondary acid generator being catalyzed by the first acid. At least part of the medium is exposed to so as to cause formation of the first acid from the first acid-generating component; and the medium is then heated to cause, in the exposed part of the medium, acid-catalyzed thermal decomposition of the secondary acid generator and formation of the secondary acid.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: June 22, 1999
    Assignee: Polaroid Corporation
    Inventors: Jurgen M. Grasshoff, John L. Marshall, Richard A. Minns, Socorro M. Ramos, Stephen G. Stroud, Stephen J. Telfer, Haixin Yang, Roger A. Boggs, Eric S. Kolb
  • Patent number: 5869175
    Abstract: A structure formed during processing of an integrated circuit. Two layers of photoresist are formed over a conductive layer to be patterned. The lower layer is thinner than the upper layer, and is dyed to have a lower transmittance. Both layers are used as a masking pattern for the underlying conductive layer.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: February 9, 1999
    Assignee: STMicroelectronics, Inc.
    Inventor: John C. Sardella
  • Patent number: 5789135
    Abstract: A light- and heat-sensitive recording material is disclosed, comprising a support provided thereon a light- and heat-sensitive layer containing a photo-color-forming element comprising a photodecomposable compound and an element capable of forming a color upon reaction with a decomposition product of the photodecomposable compound, wherein the photo-color-forming element is imagewise heated so as to be mixed to thereby form a latent image and the latent image is further exposed to light to form a color; at least one of the photodecomposable compound and the element capable of forming a color upon reaction with the decomposition product of the photodecomposable compound being dispersed through solution in an organic solvent.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: August 4, 1998
    Assignee: Konica Corporation
    Inventors: Eisaku Katoh, Manabu Shibata, Kenzo Nakazawa, Osamu Hatano, Tetsuya Yoshida, Shuji Kida
  • Patent number: 5773170
    Abstract: An image-forming element comprising a substrate, and an image-forming medium comprising (a) a compound absorbing at a first wavelength in the UV/blue region and (b) a dye absorbing at a second wavelength which is longer than the first wavelength, irradiation at said second wavelength bleaching absorption of said compound at said first wavelength, said element being free of thermally unstable urea and/or carbamate molecules.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: June 30, 1998
    Assignee: Minnesota Mining and Manufacturing Co.
    Inventors: Ranjan C. Patel, Robert J. D. Nairne
  • Patent number: 5731112
    Abstract: This invention relates to a mixture of imageable polyacetylenic compounds which have similar photosensitivities and which are visually imageable in complementary colors combinable to provide a black image, which mixture contains at least one polyacetylenic metal salt which produces a color, preferably a metal salt of a diacetylene C.sub.6 to C.sub.48 mono- or dicarboxylic acid, which is complementary to a color produced by another polyacetylenic metal salt or non-metallic polyacetylenic compound contained in the mixture or in an another integral color forming layer. The invention also pertains to the use of said mixture and the manner of its preparation.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: March 24, 1998
    Assignee: ISP Investments Inc.
    Inventors: David F. Lewis, Sangya S. Varma
  • Patent number: 5681676
    Abstract: A three-dimensional image is produced using an imaging medium having a lenticular screen, the lenticles of the screen dividing the opposed surface of the imaging medium into a plurality of elongate image areas, the imaging medium having on the opposed side thereof a radiation-sensitive layer, the radiation-sensitive layer comprising a color-forming composition adapted to undergo a change of color upon increase in the temperature of the radiation-sensitive layer above a color-forming temperature for a color-forming time.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: October 28, 1997
    Assignee: Polaroid Corporation
    Inventors: Stephen J. Telfer, Michael J. Zuraw
  • Patent number: 5667943
    Abstract: Certain squaric acid derivatives are useful for the thermochemical generation of acid. The squaric acid derivatives may be used in imaging media in conjunction with acid-sensitive materials which undergo a color change when contacted by the acid generated from the squaric acid derivatives. Preferably, the acid-sensitive materials undergo an irreversible color change, so that the image can be fixed by neutralizing all the acid generated with excess base, thereby preventing further color change in the image during long term storage.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: September 16, 1997
    Assignee: Polaroid Corporation
    Inventors: Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Anthony J. Puttick, Stephen J. Telfer, David P. Waller, Kenneth C. Waterman
  • Patent number: 5627007
    Abstract: A method for exposing a radiation sensitive material is disclosed comprising a double-sided laser exposure of the same information in register on both sides. In a preferred embodiment this material is a thermal imaging medium comprising a support, an image forming layer preferably containing carbon black, a release layer and an adhesive layer. By laser exposing this medium in register on both sides a heat mode image can be obtained after lamination and delamination which shows practically no pinhole defects.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: May 6, 1997
    Assignee: Agfa-Gevaert N.V.
    Inventors: Rudolf Van den Bergh, Johan Lamotte, Andr e Bellens
  • Patent number: 5578424
    Abstract: Acid can be generated by exposing a mixture of a superacid precursor and a dye to actinic radiation of a first wavelength which does not, in the absence of the dye, cause decomposition of the superacid precursor to form the corresponding superacid, thereby causing absorption of the actinic radiation and decomposition of part of the superacid precursor, with formation of a protonated product derived from the dye, then irradiating the mixture with actinic radiation of a second wavelength, thereby causing decomposition of part of the remaining superacid precursor, with formation of unbuffered superacid. Preferably, following these irradiations, the imaging medium is heated while the superacid is admixed with a secondary acid generator capable of being thermally decomposed to form a second acid, the thermal decomposition of the secondary acid generator being catalyzed by the presence of the superacid.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: November 26, 1996
    Assignee: Polaroid Corporation
    Inventors: Jurgen M. Grasshoff, John L. Marshall, Richard A. Minns, Anthony J. Puttick, Lloyd D. Taylor, Stephen J. Telfer
  • Patent number: 5534388
    Abstract: Acid can be generated by exposing a superacid precursor to actinic radiation effective to generate superacid from the superacid precursor and heating the superacid in admixture with a secondary acid generator capable of undergoing thermal decomposition to produce a secondary acid. The superacid catalyzes decomposition of the secondary acid generator, thus increasing the quantity of strong acid present in the medium. The resultant secondary acid can be used to effect a color change in an acid-sensitive material, so providing an imaging process.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: July 9, 1996
    Assignee: Polaroid Corporation
    Inventors: Jurgen M. Grasshoff, John L. Marshall, Richard A. Minns, Mark R. Mischke, Anthony J. Puttick, Lloyd D. Taylor, Stephen J. Telfer
  • Patent number: 5451478
    Abstract: A slide blank comprises a support at least part of which is essentially transparent; an imageable layer superposed on one face of the support, the imageable layer not being substantially photosensitive but comprising a color-forming composition, which, upon imagewise exposure to actinic radiation, forms a colored material, thereby forming in the imageable layer an image which can be viewed in transmission; and a protective layer superposed on the imageable layer on the opposed side thereof from the support, at least part of the protective layer being essentially transparent; the support, imageable layer and protective layer being secured together to form a slide blank having a thickness of at least about 0.8 mm, and the thickness of the protective layer being such that no part of the imageable layer containing the color-forming composition is more than about 0.2 mm from one external surface of the slide blank. This slide blank can be imaged to produce a ready-mounted slide.
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: September 19, 1995
    Assignee: Polaroid Corporation
    Inventors: Roger A. Boggs, Yves G. Conturie, Edward P. Lindholm, Warren D. Slafer, Stephen J. Telfer, Michael J. Zuraw
  • Patent number: 5441850
    Abstract: A process for producing an image uses an imaging medium comprising an acid-generating layer or phase comprising a mixture of a superacid precursor, a sensitizing dye and a secondary acid generator, and a color-change layer comprising an image dye. The sensitizing dye has a unprotonated form and a protonated form, the protonated form having substantially greater substantial absorption in a first wavelength range than the unprotonated form. The superacid precursor is capable of being decomposed to produce superacid by radiation in a second wavelength range, but is not, in the absence of the sensitizing dye, capable of being decomposed by radiation in the first wavelength range. The secondary acid generator is capable of acid-catalyzed thermal decomposition by unbuffered superacid to form a second acid.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: August 15, 1995
    Assignee: Polaroid Corporation
    Inventors: John L. Marshall, Larry C. Takiff, Stephen J. Telfer