Patents Examined by Lee C. Wright
  • Patent number: 5660975
    Abstract: A silver halide color photographic material comprising at least one layer provided on a support, said layer containing a coupler represented by the following formula (1): ##STR1## wherein Z.sub.a represents --C(R.sub.3).dbd. or --N.dbd.; Z.sub.b represents --C(R.sub.3).dbd. when Z.sub.a is --N.dbd. or Z.sub.b represents --N.dbd. when Z.sub.a is --C(R.sub.3).dbd.; R.sub.1 and R.sub.2 each represents an electron attractive group having a Hammett substituent constant .sigma..sub.p of 0.2 to 1.0; R.sub.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: August 26, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takayuki Ito, Naoto Matsuda
  • Patent number: 5658720
    Abstract: A silver halide photographic light sensitive material comprising a support having thereon a silver halide emulsion layer containing a cyan dye-forming coupler represented by the following formula (I) or (II).
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: August 19, 1997
    Assignee: Konica Corporation
    Inventors: Satoru Ikesu, Mitsuhiro Fukuda, Vladimir F. Rudchenko, Yutaka Kaneko
  • Patent number: 5656418
    Abstract: A silver halide color photographic material is described, containing a 1H-pyrazolo[5,1-c]-1,2,4-triazole magenta coupler represented by formula (I) or (II): ##STR1## wherein all variables are defined in the specification, which photographic material exhibits satisfactory magenta color developability to form a dye image having a high density and excellent storage stability.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: August 12, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Nakamine, Masuji Motoki, Toshio Kawagishi, Naoto Matsuda
  • Patent number: 5654132
    Abstract: A photographic element comprises a light-sensitive silver halide emulsion layer having associated therewith a cyan dye forming coupler having the formula: ##STR1## wherein: X represents hydrogen or a coupling-off group bonded to the coupling position of the coupler and capable of being split off by an oxidized color developer; andR represents an aliphatic or aromatic substituent group. The element provides improved hue of the cyan dye formed from the coupler upon coupling.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: August 5, 1997
    Assignee: Eastman Kodak Company
    Inventors: Philip T.S. Lau, Stanley Wray Cowan
  • Patent number: 5650265
    Abstract: Palladium compounds are incorporated into a relatively low speed photographic print element. One embodiment of the invention comprises a silver halide light sensitive photographic print element comprising a support bearing at least one silver halide emulsion image forming layer, an antistatic layer containing vanadium pentoxide, and a palladium compound. In a preferred embodiment, the silver halide light sensitive photographic print element of the invention comprises a support bearing on one side thereof at least one blue-sensitive silver halide emulsion yellow-image forming layer, at least one red-sensitive silver halide emulsion cyan-image forming layer, and at least one green-sensitive silver halide emulsion magenta-image forming layer; an antistatic layer containing vanadium pentoxide; and a palladium compound.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: July 22, 1997
    Assignee: Eastman Kodak Company
    Inventors: Henry Joseph Sniadoch, Gary Norman Barber
  • Patent number: 5650043
    Abstract: A silicon substrate is etched by dipping it in a NH.sub.4 F solution while charging it with a potential more negative than an open-circuit potential. The NH.sub.4 F solution preferably has NH.sub.4 F concentration of 10M or less. The potential applied to the silicon substrate is controlled within the range of from the open-circuit potential to a more negative potential by -1.5 V vs. SCE. Since the etched silicon substrate has flatness in atomic order, it is suitable for the precise fabrications to manufacture high-density ir high-functional semiconductor devices.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: July 22, 1997
    Assignees: Research Development Corporation of Japan, Kazutoshi Kaji, Toshihiko Sakuhara
    Inventors: Kazutoshi Kaji, Shueh Lin Yau, Kingo Itaya, Toshihiko Sakuhara
  • Patent number: 5645981
    Abstract: Novel pyrazolotriazole dye-forming couplers contain an aliphatic or aromatic aryl ballast group and having one carboxy or sulfonic group on the ballast group enabling the pyrazolotriazole to have increased activity and having an ether (--O--) group or group A bonded directly to a carbon atom or arylene group that is bonded directly to the pyrazolotriazole nucleus and wherein the pyrazolotriazole is capable of forming an immobile dye in a gelatino silver halide emulsion and is free of coupling-off groups that reduce silver. When the ballast group is bonded to the pyrazoloazole nucleus by means of an aromatic group, the aromatic group is ortho substituted. Group A is ##STR1## --S--, --SO--, --SO.sub.3 --, or --OSO.sub.2 --. The ether group or group A enables the dye formed to have desired hue. These couplers are useful in photographic silver halide materials and processes.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: July 8, 1997
    Assignee: Eastman Kodak Company
    Inventors: Robert Fogg Romanet, Arlyce Tolman Bowne, Sharon Eileen Normandin
  • Patent number: 5641617
    Abstract: There is provided a laser interference fringe-free photographic material which comprises a support and a near infrared-sensitive emulsion layer provided on one side of said support, wherein said emulsion layer has an absorbance of not more than 0.5 at a wavelength of near infrared laser used for exposure, and the total of the photographic material present on said emulsion layer side of said support has an absorbance of not less than 1.0 at the wavelength of the laser used for exposure.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: June 24, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Takeshi Nishio
  • Patent number: 5641613
    Abstract: The invention provides a photographic element comprising a support bearing a light-sensitive photographic silver halide layer containing (1) a bicyclic azole coupler (2) an azopyrazolone masking coupler and (3) a low impact development inhibitor releasing (LIDIR) coupler having at least one hydrogen atom at the coupling site and which does not substantially reduce contrast in the layer in which it is coated.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: June 24, 1997
    Assignee: Eastman Kodak Company
    Inventors: Jane Sarah Boff, Stephen Paul Singer
  • Patent number: 5641618
    Abstract: An improved spectrally sensitized ultrathin tabular grain emulsion is disclosed in which tabular grains (a) having {111} major faces, (b) containing greater than 70 mole percent bromide, based on silver, (c) accounting for greater than 90 percent of total grain projected area, (d) exhibiting an average equivalent circular diameter of at least 0.7 .mu.m, (e) exhibiting an average thickness of less than 0.07 .mu.m, and (f) having latent image forming chemical sensitization sites on the surfaces of the tabular grains, are spectrally sensitized and improved by employing dump iodide host tabular grains and, in forming the surface chemical sensitization sites, at least one silver salt epitaxially located on the tabular grains.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: June 24, 1997
    Assignee: Eastman Kodak Company
    Inventors: Xin Wen, Richard Lee Daubendiek, Donald Lee Black, Joseph Charles Deaton, Timothy Richard Gersey, Joseph George Lighthouse, Myra Toffolon Olm, Robert Don Wilson
  • Patent number: 5639590
    Abstract: A silver halide color photographic light-sensitive material contains a specific pyrroloazole-type cyan coupler and a high-boiling organic solvent selected from phosphoric ester, phosphonic ester, phosphinic ester, and phosphine oxide in a cyan forming silver halide emulsion layer formed on a support.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: June 17, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasuhiro Yoshioka
  • Patent number: 5637448
    Abstract: A silver halide light-sensitive photographic material is disclosed. The material comprises a layer containing light-sensitive silver halide comprising a sensitizing dye represented by the general formula I: ##STR1## wherein W.sub.1 is a fluorine-substituted alkyl group. The spectral sensitivity in the short wavelength region of green light is enhanced and color staining due residual dye is reduced.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: June 10, 1997
    Assignee: Konica Corporation
    Inventors: Masaki Nakamura, Nobuaki Kagawa
  • Patent number: 5631126
    Abstract: The invention relates to a radiation-sensitive silver halide emulsion comprisingsilver halide grains including tabular grains(a) having {111} major faces,(b) containing greater than 70 mole percent bromide, based on silver,(c) accounting for greater than 90 percent of total grain projected area,(d) exhibiting an average equivalent circular diameter of at least 0.7 .mu.m,(e) exhibiting an average thickness of less than 0.07 .mu.m, and(f) having latent image forming chemical sensitization sites on the surfaces of the tabular grains, anda spectral sensitizing dye adsorbed to the surfaces of the tabular grains,wherein the surface chemical sensitization sites include at least one silver salt epitaxially located on said tabular grains adsorbed onto said grains during grain forming or sensitizing and said emulsion further comprising at least one sulfodihydroxy aryl compound represented by the Formulas I or II ##STR1## wherein X and Y represent an SO.sub.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: May 20, 1997
    Assignee: Eastman Kodak Company
    Inventors: Richard L. Daubendiek, Jeffrey L. Hall, Melvin M. Kestner
  • Patent number: 5629141
    Abstract: There is disclosed a process for heat treatment of a photographic polyester film support, comprising steps of winding a biaxially oriented polyester film into a roll so that the thickness of a gas layer lying between the film layers continually becomes 1.5 .mu.m to 10 .mu.m, and then subjecting the roll of the polyester film to heat treatment at a temperature between 50.degree. C. and the glass transition temperature of the polyester. According to the above process, a photographic polyester film support, which is excellent in flatness of the film and does not cause unevenness of coating, can be provided.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: May 13, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Fumio Kawamoto
  • Patent number: 5629144
    Abstract: The invention provides a radiation-sensitive silver halide emulsion comprisingsilver halide grains including tabular grains(a) having {111} major faces(b) containing greater than 70 mole percent bromide, based on silver,(c) accounting for greater than 90 percent of total grain projected area,(d) exhibiting an average equivalent circular diameter of at least 0.7 .mu.m,(e) exhibiting an average thickness of less than 0.07 .mu.m, and(f) having latent image forming chemical sensitization sites on the surfaces of the tabular rains, anda spectral sensitizing dye adsorbed to the surfaces of the tabular grains,wherein the surface chemical sensitization sites include at least one silver salt epitaxially located on said tabular rains and wherein said grains further comprise a mercapto compound represented by Formula III ##STR1## where R.sup.1 is an aliphatic or aromatic radical containing up to 20 carbon atoms.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: May 13, 1997
    Assignee: Eastman Kodak Company
    Inventors: Richard L. Daubendiek, Donald L. Black, Joseph C. Deaton, Timothy R. Gersey, Joseph G. Lighthouse, Myra T. Olm, Xin Wen, Robert D. Wilson
  • Patent number: 5629126
    Abstract: A composition for use in constructing a photosensitive film for recording an image. The composition includes first, second, and third particle types, each the particle type including a crystalline base material having a trap dopant and a color dopant deposited therein. Each of the color dopants has a different spectral sensitivity. One of the particle types is sensitive to light in the red portion of the visible spectrum. This particle type includes a crystalline base material including an alkaline earth sulfide or selenide doped with Yb.sup.+2.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: May 13, 1997
    Assignee: Hewlett-Packard Company
    Inventors: William R. Trutna, Jr., Rene P. Helbing
  • Patent number: 5627017
    Abstract: Low melting point epoxy scavenger compounds are disclosed which contain a pH dependent ionizable group to facilitate migration of the scavenger from an adjacent scavenger layer (that does not contain any coupler) to an imaging layer (containing coupler and emulsion) of a photographic element at the pH of development. One aspect of the invention comprises a process of forming an aqueous dispersion of an epoxy compound of the structural formula SI: ##STR1## wherein: R is H, an alkyl group, or an aryl group; L.sub.1 is an alkyl group or an aryl group; L.sub.2 is --O--, --CO--, --S--, --SO.sub.2 --, --PO.sub.2 --, --CO.sub.2 --, --NHCO-- or --NHSO.sub.2 --, wherein L.sub.2 may be orientated in either direction; L.sub.3 is an alkyl group; m is 0 or 1; p is 0 or 1; and X is ##STR2## wherein R' is H or an alkyl or aryl group, with the proviso that where L.sub.2 comprises an ionizable group, X may also be an alkyl group or an aryl group; wherein the compound has a melting point of less than about 50.degree. C.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: May 6, 1997
    Assignee: Eastman Kodak Company
    Inventors: Krishnan Chari, Paul P. Spara, Sundaram Krishnamurthy
  • Patent number: 5622818
    Abstract: A multilayer silver halide color photographic element comprising a support bearing a light-sensitive silver halide emulsion layer and a non-diffusible yellow-colored magenta dye-forming masking coupler wherein the masking coupler is a 2'-hydroxy-5'-substituted-4-phenylazo-5-pyrazolone. The masking coupler has good coupling activity and desirable hues, and can be obtained in good yields by simple syntheses.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: April 22, 1997
    Assignee: Eastman Kodak Company
    Inventors: Daniel L. Kapp, Janet N. Younathan, Robert J. Ross, James P. Merrill
  • Patent number: 5622807
    Abstract: The present invention is a composition for use in constructing a photosensitive film for recording color images. The preferred composition includes first, second, and third particle types. Each particle type comprises a crystalline base material having a trap dopant and a color dopant deposited therein. Each of the color dopants has a different activation energy for releasing electrons into the conduction/communication band of the crystalline base material. This results in a different spectral sensitivity for each dopant, and, hence for each particle type. In addition, each of the trap dopants has a different activation energy for releasing trapped electrons into the conduction/communication band of the crystalline base material. This enables the recorded color image to be read out one color at a time, which avoids color distortion.The invention also provides a photosensitive film for recording a color image. The film comprises a backing material having a plurality of depressions therein.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: April 22, 1997
    Assignee: Hewlett-Packard Company
    Inventors: Gregory M. Cutler, Andreas Weber
  • Patent number: 5622817
    Abstract: A color negative film which contains support, at least one light-sensitive silver halide emulsion layer containing a color coupler and at least one light-insensitive layer adjacent thereto which contains a compound which reacts with the developer oxidation product during development with the splitting off of a radical which increases the sensitivity and which corresponds to formulas I or IIA-B-(T.sub.1).sub.m -(COUP-D)-(T.sub.2).sub.n (I)A-B-(T.sub.1).sub.m D (II).
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: April 22, 1997
    Assignee: Agfa-Gevaert AG.
    Inventors: Johannes Willsau, Heinrich Odenwalder