Patents Examined by Lee C. Wright
  • Patent number: 5563021
    Abstract: A photographic element comprising a light sensitive silver halide emulsion sensitized with a dye of formula (I) and a nucleating agent or amine booster associated with the silver halide emulsion: ##STR1## wherein: R.sub.3 is an alkyl group, alkenyl group, or aryl groupR.sub.4 and R.sub.5 are each hydrogen, an alkyl group, alkenyl or aryl group;R.sub.6, R.sub.7 and R.sub.8 are, independently, an alkyl group, alkenyl group, aryl group, or H;the dye has at least three acid or acid salt substituents; andeach L independently represents a methine group;p is 0 or 1;Z.sub.1 represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring group;(X).sub.n represents counterions as needed to balance the charge on the molecule.The present invention also provides a process for forming a high contrast photographic image on a photographic element having a light sensitive silver halide emulsion sensitized with a dye of formula (I).
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 8, 1996
    Assignee: Eastman Kodak Company
    Inventors: Julia Pich, John M. Higgins, John D. Mee
  • Patent number: 5561031
    Abstract: A color reversal photographic element having a light sensitive silver halide emulsion layer, and a second layer containing a light insensitive silver halide emulsion. The element additionally has a bleach accelerating releasing compound in the second layer or in a layer associated therewith. A method of processing such elements is also provided.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: October 1, 1996
    Assignee: Eastman Kodak Company
    Inventor: Arlyce T. Bowne
  • Patent number: 5561028
    Abstract: Provided is a silver halide photographic photosensitive material excellent in rapid processability and having high processing stability which contains at least one compound represented by the following formula (I) and (II): ##STR1## wherein L.sup.1 and L.sup.2 each represent a divalent linkage group, G.sup.1 and G.sup.2 each represent a carbonyl group, a sulfonyl group, a sulfinyl group, an oxalyl group or a phosphoryl group, R.sup.1 and R.sup.2 each represent a hydrogen atom, an alkyl group, an aralkyl group, an alkenyl group or an aryl group, R.sup.3 and R.sup.5 each represent an alkyl group, an aralkyl group or an alkenyl group, R.sup.4 and R.sup.6 each represent a hydrogen atom, an alkyl group, an alkoxy group, an aryloxy group, an aryl group or an amino group, Z represents a group of atoms necessary to form a nitrogen-containing 5- to 18-membered ring, X represents a counter ion, and m and n each represent 0 or 1, and the isothioureido group may be a salt of a protonic acid.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 1, 1996
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Ko-ichi Sumioka, Akira Tanaka
  • Patent number: 5561037
    Abstract: Dye fade in photographic images prepared from a silver halide photographic element having a light sensitive silver halide emulsion layer and a pyrazoloazole dye forming coupler is reduced by using a combination of stabilizer compounds of formula S, formula I and optionally formula R.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: October 1, 1996
    Assignee: Eastman Kodak Company
    Inventors: Rakesh Jain, William R. Schleigh
  • Patent number: 5558979
    Abstract: A silver halide photographic material which has an excellent dimensional stability and which is easy in the register operation is disclosed. The silver halide photographic material comprises a support having provided thereon at least one silver halide emulsion layer, wherein the total amount of gelatin in the total hydrophilic colloid layers on the side having said emulsion layer and the total hydrophilic colloid layers on the opposite side thereto is 6 g/m.sup.2 or less, and the support is a styrene type polymer having a syndiotactic structure.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: September 24, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kunio Ishigaki, Takashi Naoi
  • Patent number: 5558980
    Abstract: Photographic elements comprising loaded latex compositions are prepared by (a) combining under conditions of low or moderate shear, in the presence of surfactant, and in the substantial absence of water-miscible or volatile organic solvents, a liquid organic composition comprising at least one photographically useful compound with an aqueous polymer latex, (b) holding the combination resulting from (a) in a liquid state for sufficient time for substantial loading of the organic coposition into the polymer latex to occur, and (c) coating the loaded latex resulting from (b) on a support.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: September 24, 1996
    Assignee: Eastman Kodak Company
    Inventors: Ralph B. Nielson, Thomas A. Rosiek, James S. Honan
  • Patent number: 5556742
    Abstract: Silver halide photographic emulsions may be sensitized by the use of hydrido-phosphine noble metal compounds and especially platinum (II) compounds.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: September 17, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles G. Barlow, Peter R. Johns, Peter D. Sills
  • Patent number: 5554496
    Abstract: A silver halide photographic material comprises a silver halide emulsion layer and an anticurl backing layer provided on a support. A surface backing layer is further provided on the anticurl backing layer. The surface backing layer comprises a hydrophobic polymer. The hydrophobic polymer has a repeating unit represented by the formula (I): ##STR1## in which R.sup.1 is hydrogen or an alkyl group; X is --COO--, --CONR.sup.3 -- or phenylene; R.sup.3 is hydrogen or an alkyl group; R.sup.2 is a single bond or an alkylene group; L is a single bond or a divalent linking group, --OCO--, --NHCOO--, --OCOCH.sub.2 --, --NHCONH--, --NHCO--, --NH-- or --O--; and Cy is an alicyclic group consisting of a monocyclic ring and having three to sixteen carbon atoms.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: September 10, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kentaro Shiratsuchi, Satoru Toda, Tsukasa Yamada
  • Patent number: 5554493
    Abstract: Certain 2,1-benzisoxazol-3(1H)-ones are useful as antioxidants in photographic color developer compositions. These compounds are highly water soluble and are essentially odorless. In addition, they have extended shelf life. They are useful in processing silver halide color photographic elements having at least one incorporated dye forming coupler.
    Type: Grant
    Filed: November 6, 1995
    Date of Patent: September 10, 1996
    Assignee: Eastman Kodak Company
    Inventors: Robert J. Perry, Carl A. Marrese, Sucheta Tandon
  • Patent number: 5550013
    Abstract: The invention relates to a radiation sensitive emulsion comprised of a dispersing medium and silver iodochloride grainswherein the silver iodochloride grainsare partially bounded by {100} crystal faces satisfying the relative orientation and spacing of cubic grains andcontain from 0.05 to 1 mole percent iodide, based on total silver, with maximum iodide concentrations located nearer the surface of the grains than their centerand wherein said emulsion further comprises a polyethylene oxide represented by Formula IR--(OCH.sub.2 CH.sub.2).sub.n OH (I)whereinR is H, alkyl or substituted alkyl with the number of carbon atoms ranging from 1 to 25, and n may vary from 1 to 40.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: August 27, 1996
    Assignee: Eastman Kodak Company
    Inventors: Benjamin T. K. Chen, Roger Lok
  • Patent number: 5547826
    Abstract: A silver halide photographic material comprising a support having provided thereon at least one layer containing a coupler represented by formula (I) ##STR1## wherein Za represents --C(R.sub.3).dbd. or --N.dbd., provided that when Za represents --N.dbd., Zb represents --C(R.sub.3).dbd. and when Za represents --C(R.sub.3).dbd., Zb represents --N.dbd.; R.sub.1 and R.sub.2 each represents an electron withdrawing group having a Hammett's substituent constant, .sigma..sub.p, of from 0.20 to 1.0; R.sub.3 represents a substituent; R.sub.4 and R.sub.5 are the same or different, and each represents a hydrogen atom, an aliphatic group, an aryl group or a heterocyclic group; and R.sub.4 and R.sub.5 may combine with each other to form a 5-membered ring or a 6-membered ring and the 5-membered ring or the 6-membered ring may form a condensed ring with a benzene ring or a heterocyclic ring.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: August 20, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takayuki Ito, Yasuhiro Shimada, Koushin Matsuoka, Yasuhiro Yoshioka
  • Patent number: 5547825
    Abstract: A silver halide color photographic material which has on a support the combination of a pyrroloazole type cyan coupler and a redox compound having a molecular weight of at least 350 to provide color photographs having faithfully reproduced colors which are highly fast to light under both high and low humidity conditions.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: August 20, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Nobutaka Ohki
  • Patent number: 5547819
    Abstract: Disclosed is a silver halide photographic material containing particular cyanine dye polymer(s) comprising at least one repeating unit represented by formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, or a chlorine atom; L.sup.1 represents --CON(R.sup.2)-- (where R.sup.2 represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, or a substituted alkyl group having from 1 to 6 carbon atoms), --COO--, --NHCO--, --OCO--, --C.sub.6 H.sub.2 (R.sup.3)(R.sup.4)COO-- (where R.sup.3 and R.sup.4 each independently represent a hydrogen atom, a hydroxyl group, a halogen atom, or a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted acyloxy group or a substituted or unsubstituted aryloxy group; and C.sub.6 H.sub.2 represents a benzene ring with four substituents), or --C.sub.6 H.sub.2 (R.sup.3)(R.sup.4)CON(R.sup.2)-- (where R.sup.2, R.sup.3, R.sup.4 and C.sub.6 H.sub.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: August 20, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Ohno, Yasushi Hattori
  • Patent number: 5545514
    Abstract: A silver halide color photographic light-sensitive material is disclosed. The light-sensitive material has a silver halide emulsion layer which contains oleophilic particles comprising a dye-forming coupler and a water-insoluble monohydric alcohol represented by the following Formula I, II or III; ##STR1## wherein m is an integer of 1 to 20; one of R.sub.11, R.sub.12 and R.sub.13 in number of m is a hydrogen atom and other groups represented by R.sub.11, R.sub.12 and R.sub.13 are each an acyl group; and the total number of carbon atoms contained in the acyl groups represented by R.sub.11, R.sub.12 and R.sub.13 are not less than 8; ##STR2## wherein one of R.sub.21, R.sub.22, R.sub.23 and R.sub.24 is a hydrogen atom and other groups represented by R.sub.21, R.sub.22, R.sub.23 and R.sub.24 are each an acyl group and the total number of carbon atoms contained in the acyl groups represented by R.sub.21, R.sub.22, R.sub.23 and R.sub.24 is not less than 12; ##STR3## wherein one of R.sub.31, R.sub.32, R.sub.33 and R.
    Type: Grant
    Filed: July 11, 1995
    Date of Patent: August 13, 1996
    Assignee: Konica Corporation
    Inventors: Hiroshi Kita, Hirokazu Sato, Koji Daifuku
  • Patent number: 5545501
    Abstract: This invention provides an electrostatographic developer composition comprising carrier particles and toner particles with a toner particle size distribution having a volume average particle size (T) such that 4 m.mu..ltoreq.T.ltoreq.12 .mu.m and an average charge (absolute value) pro diameter in femtocoulomb/10 .mu.m (C.sub.T) after triboelectric contact with said carrier particles such that 1 fC/10 .mu.m.ltoreq.C.sub.T .ltoreq.10 fc/10 .mu.m characterised in that(i) said carrier particles have a saturation magnetization value, M.sub.sat, expressed in Tesla (T) such that M.sub.sat .gtoreq.0.30 T(ii) said carrier particles have a volume average particle size (C.sub.avg) such that 30 .mu.m.ltoreq.C.sub.avg .ltoreq.60 .mu.m(iii) said volume based particle size distribution of said carrier particles has at least 90% of the particles having a particle diameter C such that 0.5 C.sub.avg .ltoreq.C.ltoreq.2C.sub.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: August 13, 1996
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Serge Tavernier, Frank Ruttens, Andr e Verhecken, Jozef Mampaey, Ludovicus Joly
  • Patent number: 5545504
    Abstract: A process for the preparation of toner compositions comprising: forming a mixture comprised of at least one free radical reactive monomer, a colorant, a stabilizer compound containing a stable free radical reactive group, and a liquid vehicle; and heating the mixture from about 75.degree. to about 200.degree. C. to effect polymerization of said monomer, wherein there results stabilized core resin particles containing said colorant and wherein said stabilized core particles are stabilized by said stable free radical reactive stabilizer compounds being bonded directly to the core particles.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: August 13, 1996
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Michael K. Georges, Stephan V. Drappel
  • Patent number: 5543280
    Abstract: A color photographic material which contains in at least one blue sensitive layer containing a yellow coupler a compound of the formula (I) ##STR1## in which R.sub.1 means --(X).sub.m --R.sub.4,m means 0 or 1,X means --CO--, --CO--NR.sub.5 -- or --CO--O--,R.sub.4 means H, alkyl, aryl or alkenyl,R.sub.2 means H or alkyl,R.sub.3 means H or alkyl,R.sub.5 means H, alkyl, cycloalkyl or aryl,n means 1 to 20, providing that m is 1 in at least 10% of the R.sub.1 groups, is distinguished by improved color stability.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: August 6, 1996
    Assignee: AGFA-Gevaert AG
    Inventors: Beate Weber, J org Hagemann, G unter Helling, Markus Geiger
  • Patent number: 5543276
    Abstract: Thermal and photochemical yellowing of a color photographic element, such as a color print, is inhibited by incorporating into the photographic element an ionizable epoxy compound having the formula: ##STR1## wherein: R is H, alkyl, substituted alkyl, aryl, or substituted aryl;L.sub.1 is alkyl, substituted alkyl, aryl, or substituted aryl;L.sub.2 is O, CO, S, SO.sub.2, PO.sub.2, C(O)O, NHCO or NHSO.sub.2 ;L.sub.3 is alkyl or substituted alkyl;m is 0 or 1;p is 0 or 1;X is selected from the group consisting of ##STR2## wherein: R' is H, alkyl, substituted alkyl, aryl or substituted aryl,or, if L.sub.2 comprises an ionizable group, X is alkyl, substituted alkyl, aryl or substituted aryl.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: August 6, 1996
    Assignee: Eastman Kodak Company
    Inventors: Krishnan Chari, Wendell F. Smith, Jr., Paul P. Spara, Sundaram Krishnamurthy
  • Patent number: 5543281
    Abstract: The invention relates to a photographic element comprising at least one layer comprising a transition metallic salt of the general formula: ##STR1## wherein Q represents the atoms necessary to complete a five- or six-membered heterocyclic nucleus, and M is a transition metal cation and coupler, wherein said element further comprises silver chloride grains that comprise less than 2 mole percent iodide.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: August 6, 1996
    Assignee: Eastman Kodak Company
    Inventors: Walter H. Isaac, Eric W. Wollman
  • Patent number: 5541047
    Abstract: A silver halide photographic light-sensitive material is disclosed, comprising tabular grains having an average aspect ratio of diameter to thickness of 2 or more, having an average overall iodide content of 2 mol % or less, and having a surface phase containing 3 to 20 mol % iodide on the average.
    Type: Grant
    Filed: December 12, 1994
    Date of Patent: July 30, 1996
    Assignee: Konica Corporation
    Inventors: Hiroshi Kashiwagi, Hideki Takiguchi