Patents Represented by Attorney, Agent or Law Firm Edith A. Rice
  • Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
    Patent number: 5994051
    Abstract: This invention comprises a photographic element comprising at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula X--H, wherein X is an electron donor moiety to which a base, B.sup.-, is covalently linked and H is a leaving hydrogen atom, and wherein:1) X--H has an oxidation potential between 0 and about 1.4 V; and2) the oxidized form of X--H undergoes deprotonation reaction with the base B.sup.-, to give the radical X.sup..cndot. and the protonated base B-H.In a preferred embodiment of the invention, the radical X.cndot. has an oxidation potential <-0.7V.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: November 30, 1999
    Assignee: Eastman Kodak Company
    Inventors: Ian R. Gould, Samir Farid, Stephen A. Godleski, Jerome R. Lenhard, Annabel A. Muenter, Paul A. Zielinski
  • Thermographic imaging element
    Patent number: 5994052
    Abstract: 1. A thermographic imaging element comprising: (a) a support; and(b) an imaging layer comprising:(i) an oxidizing agent;(ii) a first reducing agent; and(iii) a second reducing agent comprising a boron compound containing at least one boron-hydrogen bond.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: November 30, 1999
    Assignee: Eastman Kodak Company
    Inventors: Thomas D. Weaver, David F. Jennings
  • Combinations of purine-releasing pyrazolone DIR couplers and pyrazolone or pyrazolotriazole imaging couplers
    Patent number: 5989798
    Abstract: A photographic element comprises: (a) a support; and (b) at least one silver halide emulsion layer; wherein said emulsion layer contains (c) at least one magenta dye-forming pyrazolone DIR coupler of structure I; and (d) at least one magenta dye-forming imaging coupler of structure II, structure IIIa or structure IIIb, below: ##STR1## wherein the substituents are as defined in the specification.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: November 23, 1999
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, David A. Steele
  • Photographic element containing a DIR coupler
    Patent number: 5981158
    Abstract: A photographic element comprises a support bearing at least one silver halide emulsion and at least one acylacetanilide or malonanilide yellow dye-forming DIR coupler of structure I or structure II, below ##STR1## wherein the substituents are as defined in the specification.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: November 9, 1999
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, Jerrold N. Poslusny, James H. Reynolds, Bernard A. Clark, Robert N. Gourley
  • Thermally processable imaging element
    Patent number: 5981156
    Abstract: A method of making a thermally processable imaging element which comprises:i) forming a solution of poly(vinyl alcohol) in water;ii) adding matte particles to the resulting aqueous medium;iii) adding a compound of the formula I or formula II to the aqueous medium in an amount sufficient to inhibit agglomeration of the matte particles: ##STR1## wherein: the substituents are as described in the specification; iv) coating an image recording layer onto one side of a support;v) coating the aqueous medium containing the matte particles as an overcoat layer over the image recording layer or as backing layer on the side of the support opposite the image recording layer.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: November 9, 1999
    Assignee: Eastman Kodak Company
    Inventors: Sharon M. Melpolder, Peter J. Cowdery-Corvan, Alfred J. Alton
  • Co-dispersion of sensitizing dyes
    Patent number: 5965345
    Abstract: A method of sensitizing a silver halide emulsion comprises the steps of:a) forming a co-dispersion of a first sensitizing dye and a second sensitizing dye in an aqueous medium, wherein the peak absorptance of the second dye is at least 10 nm different from the peak absorptance of the first dye, and wherein the ratio of the first dye to the second dye is from about 0.1 to 20; andb) incorporating the resulting co-dispersion in a silver halide emulsion.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: October 12, 1999
    Assignee: Eastman Kodak Company
    Inventors: Steven George Link, John William Boettcher, Frederick Charles Derks, Heidi Melissa Viterise
  • Thermally processable imaging element having improved physical properties
    Patent number: 5965347
    Abstract: A thermally processable imaging element which comprises a support bearing an imaging layer containing in reactive association an image-forming combination comprising an organic silver salt oxidizing agent with a reducing agent for the organic silver salt oxidizing agent, wherein the imaging layer comprises a binder and a chlorinated hydrocarbon.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: October 12, 1999
    Assignee: Eastman Kodak Company
    Inventors: Charles L. Bauer, Dorothy T. Java
  • Photographic element containing a DIR coupler
    Patent number: 5958662
    Abstract: A photographic element, comprises a support bearing one or more silver halide emulsions and one or more pyrazolone magenta dye-forming DIR couplers of structure I or II: wherein:the R.sub.1 substituents are individually selected from the group consisting of halogen atoms and alkyl, phenyl, alkoxy, phenoxy, carbonamido, sulfonamido, carbamoyl, alkoxycarbonyl, aryloxcarbonyl, and trifluoromethyl groups;n is 1 to 5;R.sub.2 is an alkyl group or a phenyl group; andR.sub.3 is a substituent containing at least 2 carbon atoms and selected from the group consisting of an alkylthio group, an arylthio group, an alkoxy group, an phenoxy group or a carbonamido group of the formula: --NHCOR.sub.4, wherein R.sub.4 is an alkyl group, a phenyl group, an alkoxy group or a phenoxy group.
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: September 28, 1999
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, David A. Steele, Jerrold N. Poslusny
  • Photographic element containing antifogging cycanine dyes
    Patent number: 5958666
    Abstract: A photographic element comprises at least one light-sensitive layer comprising a silver halide emulsion, wherein the silver halide content is less than or equal to 30% silver chloride, and a dye of formula (I) or formula (II): ##STR1## wherein the substituents are as defined in the specification. ##STR2## wherein the substituents are as defined in the specification.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: September 28, 1999
    Assignee: Eastman Kodak Company
    Inventors: Steven G. Link, Roger Lok
  • Hydrophilic colloid composition
    Patent number: 5958660
    Abstract: This invention comprises a composition containing a hydrophilic colloid and a water soluble polymer of boric acid, and optionally a hardening agent for the hydrophilic colloid. The hydrophilic colloid is preferably gelatin. This invention also comprises a photographic element in which at least one layer thereof contains a hydrophilic colloid and a water-soluble polymer of boric acid and a method of making the photographic element.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: September 28, 1999
    Assignee: Eastman Kodak Company
    Inventors: Jeffrey F. Taylor, Tien-teh Chen, Hwei-Ling Yau, Elmer C. Flood, Lan B. Thai
  • Thermographic imaging element
    Patent number: 5928855
    Abstract: A thermographic imaging element comprises:(a) a support;(b) an imaging layer comprising:(i) a silver salt;(ii) a first reducing agent which has high activity with an activation energy of less than 10 Joules/sq.cm.;(iii) a second reducing agent which has low activity with an activation energy of greater than or equal to 10 Joules/sq. cm.; and(iv) a third reducing agent comprising a silicon compound containing at least one silicon-hydrogen bond.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: July 27, 1999
    Assignee: Eastman Kodak Company
    Inventors: Thomas D. Weaver, David F. Jennings
  • Thermographic imaging element
    Patent number: 5928856
    Abstract: A thermographic imaging element comprises:(a) a support;(b) an imaging layer comprising:(i) an oxidizing agent;(ii) a first reducing agent which has high activity with an activation energy of less than 10 Joules/sq.cm.;(iii) a second reducing agent which has low activity with an activation energy of greater than or equal to 10 Joules/sq. cm.; and(iv) a third reducing agent comprising a boron compound containing at least one boron-hydrogen bond.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: July 27, 1999
    Assignee: Eastman Kodak Company
    Inventors: Thomas D. Weaver, David F. Jennings
  • Black and white photographic element
    Patent number: 5928849
    Abstract: A black and white photographic element contains a filter dye of Formula (I): ##STR1## wherein each R.sup.1 is independently substituted or unsubstituted alkyl, substituted or unsubstituted alkoxy, cyano, hydroxy, carboxy, substituted or unsubstituted amido, or substituted or unsubstituted sulfonamido;n is 1-4;R.sup.2 is H, substituted or unsubstituted alkyl or amido;each of R.sup.3 and R.sup.4 is independently hydrogen or substituted or unsubstituted alkyl; andM is a cation.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: July 27, 1999
    Assignee: Eastman Kodak Company
    Inventors: Christopher Edwin Wheeler, Robert Bruce Bayley, Michael Kent Coil, Margaret Jones Helber
  • Photographic material having a red sensitized silver halide emulsion layer with improved heat sensitivity
    Patent number: 5925509
    Abstract: A silver halide photographic material having improved heat sensitivity comprises a red sensitive silver halide emulsion layer the silver halide of which is prepared in the presence of a hexacoordination complex of rhenium, ruthenium or osmium with at least four cyanide ligands and comprising at least about 90 mole percent silver chloride, wherein the emulsion contains at least one red sensitizing dye.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: July 20, 1999
    Assignee: Eastman Kodak Company
    Inventors: Richard Paul Garnsey, Pamela McCue Ferguson, Richard Lee Parton, Paul Timothy Hahm
  • Thermographic imaging element
    Patent number: 5922528
    Abstract: A thermographic imaging element comprising:(a) a support; and(b) an imaging layer comprising:(i) an oxidizing agent;(ii) a first reducing agent; and(iii) a second reducing agent comprising a silicon compound containing at least one silicon-hydrogen bond.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: July 13, 1999
    Assignee: Eastman Kodak Company
    Inventors: Thomas D. Weaver, David F. Jennings
  • Photographic material having a red sensitized silver halide emulsion layer with improved heat sensitivity
    Patent number: 5922525
    Abstract: A silver halide photographic material having improved heat sensitivity comprises a red sensitive silver halide emulsion layer the silver halide of which is prepared in the presence of a hexacoordination complex of rhenium, ruthenium or osmium with at least four cyanide ligands and comprising at least about 90 mole percent silver chloride, wherein the emulsion contains a thiosulfonate and a sulfinate or seleninate and at least one red sensitizing dye.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: July 13, 1999
    Assignee: Eastman Kodak Company
    Inventors: Richard Paul Garnsey, Pamela McCue Ferguson, Richard Lee Parton, Paul Timothy Hahm
  • Filter dyes for photographic elements
    Patent number: 5922523
    Abstract: A photographic element contains a filter dye of the Formula (I): ##STR1## wherein R.sup.1 -R.sup.4 each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group; L.sup.1, L.sup.2 and L.sup.3 each independently represent substituted or unsubstituted methine groups; M.sup.+ represents a proton or an inorganic or organic cation.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: July 13, 1999
    Assignee: Eastman Kodak Company
    Inventors: Margaret Jones Helber, William James Harrison, Elizabeth Ann Gallo
  • Thermally processable imaging element with improved adhesion of the overcoat layer
    Patent number: 5891610
    Abstract: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating has a protective overcoat layer containing poly(silicic acid), and a mixture of a water-soluble hydroxyl-containing polymer and a polyvinyl acetal.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: April 6, 1999
    Assignee: Eastman Kodak Company
    Inventors: Charles L. Bauer, Wayne A. Bowman
  • Photographic elements containing 3-alkyl group substituted 2-hydroxyphenylbenzotriazole UV absorbing polymers
    Patent number: 5858633
    Abstract: Photographic elements containing 3-tertiary alkyl group substituted 2-hydroxyphenylbenzotriazole UV absorbing polymers. In particular, a photographic element having at least one layer containing a light sensitive silver halide emulsion and at least one layer which is not light sensitive, the element having in at least one of the layers an ultraviolet absorbing polymer which includes units formed from monomers of the structure of formula (I): ##STR1## wherein: n is an integer of 1 to 6;p and m are, independently, 0 or 1;tert-Alk is a 4 to 10 carbon atom tertiary alkyl group;G is --CO--, --C(O)--, --C(O)NH--, or --SO.sub.2 --;R.sub.2 and R.sub.3 are, independently, H, halogen, alkyl group or alkoxy group, and if n is more than 1 all of the R.sub.2 may be the same or different and all of the R.sub.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: January 12, 1999
    Assignee: Eastman Kodak Company
    Inventors: Tienteh Chen, Hwei-Ling Yau
  • Photographic coating compositions and photographic elements made therefrom
    Patent number: 5834172
    Abstract: A photographic coating composition comprising an aqueous medium containing a hydrophilic colloid and having dispersed therein solid particles of a yellow filter dye also contains a oxidized developer scavenger of formula III ##STR1## wherein x.sup.1 =hydrogen or a process cleavable group;R.sup.14 =an electron withdrawing and aqueous solubilizing group;R.sup.15 =a substituent group;R.sup.16 =a ballasting group;R.sup.17 =a substituent group;i=1, 2, 3, or 4; andj=1, 2, 3, or 4.The coating composition is stable with regard to crystal growth of the dispersed solid particles of filter dye even when held at coating temperatures (about 45.degree. C.) for several hours.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: November 10, 1998
    Assignee: Eastman Kodak Company
    Inventors: Paul Leo Zengerle, John Victor Nelson, Mary Christine Brick