And Antifoggant Or Color Stabilizer Patents (Class 430/551)
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Patent number: 5573898Abstract: Disclosed is a silver halide color photographic material having plural light-sensitive layers on a reflective support, in which the reflective support is composed of a base and two or more waterproof resin coat layers each having a different white pigment content in such a way that the resin coat layers are sandwiched between the base and the light-sensitive layers, the cyan coupler-containing silver halide emulsion layer contains a particular pyrroloazole cyan dye-forming coupler, and the pH of the coated film of the material is from 4.0 to 6.5. The material is low-priced and has a good coloring property, excellent color reproducibility and high sharpness. As the material has sufficient pressure resistance, it has few stress marks even after stored. Also disclosed is a method for forming a color image, using the photographic material.Type: GrantFiled: September 29, 1994Date of Patent: November 12, 1996Assignee: Fuji Photo Film Co., Ltd.Inventor: Hidekazu Sakai
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Patent number: 5573903Abstract: A silver halide photographic material having the improved storability and anti-stress property is disclosed, which comprises a support having provided thereon at least one light-sensitive silver halide emulsion layer containing a silver halide emulsion, wherein the silver halide emulsion is subjected to a chemical sensitization with a selenium compound, and the emulsion layer or another layer provided on the support contains at least one of the compounds represented by formulas (I), (II) and (III): ##STR1## wherein R.sub.11 to R.sub.16, R.sub.21 to R.sub.26, R.sub.1 and R.sub.2 are defined in the specification.Type: GrantFiled: March 13, 1995Date of Patent: November 12, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Yamashita, Tetsuro Kojima, Hiroyuki Mifune, Mikio Ihama, Hirotomo Sasaki
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Patent number: 5567578Abstract: Provided is a silver halide color photographic material containing at least one particular acylamide-type yellow coupler in at least one light-sensitive layer therein along with a particular bisphenolic image stabilizer and a particular spirocyclic or bicyclic image stabilizer. The material has excellent coloring properties and excellent color reproducibility and forms thereon color images having high fastness to light all from the high-density areas to the low-density areas.Type: GrantFiled: November 22, 1994Date of Patent: October 22, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiyuki Makuta, Nobuo Seto, Yasuhiro Yoshioka
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Patent number: 5565313Abstract: Disclosed is a silver halide color photographic light-sensitive material comprising at least one of magenta coupler represented by Formula I or II: ##STR1## wherein R.sup.1 and R.sup.4 each represent a substituent; R.sup.2 and R.sup.3 each represent a substituted or unsubstituted alkyl group; L.sub.1 and L.sub.2 each represent a substituted or unsubstituted alkylene group, an arylene group, an aralkylene group or an arylenealkylene group; Y represents ##STR2## R.sup.5 and R.sup.6 each represent a substituent; X.sub.1 represents a hydrogen atom or a group capable of splitting off upon reacting with an oxidized product of a color developing agent; Z represents non-metal atomic group forming a 5-membered or 6-membered heterocyclic ring together with a nitrogen atom; m and n each represent an integer of 0 or 1; p represents an integer of 0 to 4; q represents an integer of 0 to 2, provided that when p is 2 or more, R.sup.4 may be the same or different; and each of them may form a ring.Type: GrantFiled: March 7, 1996Date of Patent: October 15, 1996Assignee: Konica CorporationInventors: Hiroshi Ishidai, Hiroshi Kita, Yutaka Kaneko
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Patent number: 5565312Abstract: 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 as shown in the specification.Type: GrantFiled: April 26, 1995Date of Patent: October 15, 1996Assignee: Eastman Kodak CompanyInventor: Rakesh Jain
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Patent number: 5561040Abstract: There is provided a method for forming an image, which comprises processing a silver halide color photographic material that has a high-silver-chloride silver halide emulsion and which contains in the photographic material a nitrogen-containing heterocyclic compound, the solubility product of which for the silver salt is in a limited range, with a color developer containing chloride ions and bromide ions in a limited concentration, respectively. The method is excellent in forming an image that can be performed rapidly, and is high in sensitivity, in prevention of processing color-mixing, and in less fluctuation of the photographic quality involved in continuous processing.Type: GrantFiled: May 26, 1995Date of Patent: October 1, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Kiyoshi Kawai, Shigeaki Ohtani
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Patent number: 5561035Abstract: An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a pyrocatechol compound that functions as a scavenger for oxidized developing agent. The pyrocatechol compound has sufficient bulk that it is substantially non-diffusible in the photographic element and has in the four-position thereof a tertiary carbamoyl substituent. These scavenger compounds exhibit very high activity, have excellent stability upon long-term storage and do not leave colored residues after processing.Type: GrantFiled: February 15, 1995Date of Patent: October 1, 1996Assignee: Eastman Kodak CompanyInventors: Stephen P. Singer, Ronald E. Leone
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Patent number: 5561037Abstract: 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: GrantFiled: April 26, 1995Date of Patent: October 1, 1996Assignee: Eastman Kodak CompanyInventors: Rakesh Jain, William R. Schleigh
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Patent number: 5561036Abstract: An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a hydroquinone compound that functions as a scavenger for oxidized developing agent. The hydroquinone compound has sufficient bulk that it is substantially non-diffusible in the photographic element and has in the two-position thereof an asymmetric tertiary carbamoyl substituent. These scavenger compounds exhibit very high activity, have excellent stability upon long-term storage and do not leave colored residues after processing.Type: GrantFiled: March 30, 1995Date of Patent: October 1, 1996Assignee: Eastman Kodak CompanyInventors: Stephen P. Singer, Ronald E. Leone
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Patent number: 5547825Abstract: 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: GrantFiled: April 25, 1995Date of Patent: August 20, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Osamu Takahashi, Nobutaka Ohki
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Patent number: 5545514Abstract: 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: GrantFiled: July 11, 1995Date of Patent: August 13, 1996Assignee: Konica CorporationInventors: Hiroshi Kita, Hirokazu Sato, Koji Daifuku
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Patent number: 5543278Abstract: An infrared sensitive silver halide photographic element is disclosed comprising a support and at least one silver halide emulsion layer spectrally sensitized to the infrared portion of the electromagnetic spectrum. In particular, an infrared sensitive color photographic element, capable of providing full color images without exposure to corresponding visible radiation, is disclosed, said element comprising at least three silver halide emulsion layers on a substrate, each associated with different photographic color image forming materials, such as color couplers capable of forming dyes of different colors upon reaction with an oxidized color photographic developer, diffusing dyes, bleachable dyes, or oxidized leuco dyes. The three emulsion layers are sensitized to three different portions of the electromagnetic spectrum with at least two layers sensitized to different regions of the infrared region of the electromagnetic spectrum.Type: GrantFiled: January 18, 1991Date of Patent: August 6, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Marco Bucci, Ivano Delprato, Giorgio Spazzapan
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Patent number: 5543281Abstract: 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: GrantFiled: February 17, 1995Date of Patent: August 6, 1996Assignee: Eastman Kodak CompanyInventors: Walter H. Isaac, Eric W. Wollman
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Patent number: 5543275Abstract: A silver halide color photographic material having excellent color absorption characteristics and good yellow density is achieved by using a support having thereon at least one yellow coloring light-sensitive layer, at least one magenta coloring light-sensitive layer, and at least one cyan coloring light-sensitive layer, wherein the magenta coloring light-sensitive layer contains at least one dye-forming coupler represented by the following formula (M-I), at least one high boiling point organic solvent having a dielectric constant of 6.0 or less and a refractive index of 1.50 or less, and at least one benzotriazole ultraviolet absorber: ##STR1## wherein R.sub.1 represents a branched or aromatic group represented by the formulas (Q-1), (Q-2) or (Q-3); R.sub.2 and R.sub.3 each represents a substituent; n represents an integer of form 0 to 4, and when n is 2 or more, the plurality of R.sub.Type: GrantFiled: May 10, 1995Date of Patent: August 6, 1996Assignee: Fuji Photo Film Co., Ltd.Inventor: Toshiyuki Makuta
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Patent number: 5543277Abstract: An improved photographic element comprises a support bearing at least-one silver halide emulsion layer having associated therewith a hydrazide compound that functions as a scavenger for oxidized developing agent. The hydrazide compound comprises at least one polyhydroxy aromatic nucleus or a precursor thereof and at least one moiety containing an ##STR1## group which is bonded to a ring carbon atom of the polyhydroxy aromatic nucleus or precursor thereof through a linking group. The linking group can be an oxy, thio, sulfinyl, sulfonyl or alkylene group or it can be a carbonyl group when the polyhydroxy aromatic nucleus comprises at least three hydroxyl groups.Type: GrantFiled: March 1, 1995Date of Patent: August 6, 1996Assignee: Eastman Kodak CompanyInventors: Stephen P. Singer, John W. Harder
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Patent number: 5543280Abstract: 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: GrantFiled: November 13, 1995Date of Patent: August 6, 1996Assignee: AGFA-Gevaert AGInventors: Beate Weber, J org Hagemann, G unter Helling, Markus Geiger
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Patent number: 5543276Abstract: 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: GrantFiled: June 8, 1994Date of Patent: August 6, 1996Assignee: Eastman Kodak CompanyInventors: Krishnan Chari, Wendell F. Smith, Jr., Paul P. Spara, Sundaram Krishnamurthy
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Patent number: 5541044Abstract: The present invention relates to a silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein at least one layer of said photographic material contains at least one yellow coupler represented by the following general formulas (3) or (2): ##STR1## as defined in the specification.Type: GrantFiled: November 16, 1993Date of Patent: July 30, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Mitsuru Yamamoto, Shigeo Hirano, Akira Ogawa, Kouichi Hanaki
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Patent number: 5538835Abstract: A silver halide color photographic material comprising a support having provided thereon at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler and at least one red-sensitive silver halide emulsion layer containing a cyan coupler, wherein at least one layer contains at least one compound selected from those represented by the following formula (A) and the silver halide grains to be in at least one of the silver halide emulsion layers have a mean grain size of 0.25 .mu.m or smaller, ##STR1## wherein Ra.sub.1 to Ra.sub.5, which may be the same or different, each represents (1) a hydrogen atom, (2) an alkyl group, (3) --X--Ra.sub.0, or (4) a group necessary for forming a chroman ring by two of Ra.sub.1 to Ra.sub.5 which are ortho-positioned and are bonded to each other; X represents --C(Ra.sub.6)(Ra.sub.7)--, --O--, or --S--; Ra.sub.6 and Ra.sub.Type: GrantFiled: June 3, 1994Date of Patent: July 23, 1996Assignee: Fuji Photo Film Co., Ltd.Inventor: Junichiro Hosokawa
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Patent number: 5538842Abstract: There is disclosed a silver halide color photographic light-sensitive material which excels in a color reproduction and a light fastness at a low density part through a high density part and which is improved in a Y-stain at a background part. The silver halide color photographic light-sensitive material comprises a support and provided thereon at least one photographic constitutional layer, wherein at least one layer of the above photographic constitutional layers contains at least one of the compounds represented by the following Formula (I) and a compound represented by the following Formula (II) in the same layer: ##STR1## wherein R represents a hydrogen atom or a substituent; Z.sub.a, Z.sub.b, and Z.sub.c each represent any group of methine, substituted methine, .dbd.N--, or --NH--; Y represents a hydrogen atom or a group capable of splitting off upon a coupling reaction with an oxidation product of a developing agent; provided that a dimer or a polymer may be formed via R, Y, or Z.sub.a, Z.sub.b or Z.Type: GrantFiled: June 30, 1994Date of Patent: July 23, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Osamu Takahashi, Takehiko Sato
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Patent number: 5534390Abstract: A silver halide color photographic material comprising a support having thereon at least one layer containing at least one compound represented by formula (A) ##STR1## wherein the definition of R.sub.a1, R.sub.a2, R.sub.a3, Z, Y, m and n is described in the specification.Type: GrantFiled: June 7, 1995Date of Patent: July 9, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuo Seto, Yasuhiro Yoshioka, Masakazu Morigaki
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Patent number: 5521058Abstract: A multilayer silver halide color light-sensitive material including a yellow color-forming silver halide emulsion layer, a magenta color-forming silver halide emulsion layer, and a cyan color-forming silver halide emulsion layer, on a support. The light-sensitive material contains, in the yellow color-forming silver halide emulsion layer, at least one acylacetamide-type yellow coupler having an acyl group of a specified structure, and at least one organic compound selected from the group consisting of specified epoxy compounds, specified amide compounds, and esters having a melting point of 25.degree. C. or more at normal pressure and a molecular weight of 1000 or less.Type: GrantFiled: January 24, 1995Date of Patent: May 28, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuhiro Yoshioka, Hidetoshi Kobayashi
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Patent number: 5514531Abstract: There is disclosed a silver halide color photographic material which comprises an acylacetamide yellow dye-forming coupler represented by the following formula (I) and a compound represented by the following formula (II) or (III): ##STR1## wherein R.sub.1 represents a monovalent group, Q represents a group of non-metallic atoms required to form together with the C a 3- to 5-membered cyclic hydrocarbon group or a 3- to 5-membered heterocyclic group, and Y.sub.R represents a residue remaining after removing the acyl group from the acylacetamide yellow dye-forming coupler represented by formula (I), provided that R.sub.1 is not a hydrogen atom and does not bond to Q to form a ring, ##STR2## wherein R.sub.a1, R.sub.a2, R.sub.a3, R.sub.a4, and R.sub.a5 each represent a hydrogen atom, or a substituent such as an alkyl group, an alkenyl group, an aryl group, a heterocyclic group, a cyano group, a halogen atom, or a nitro group, provided that R.sub.a1, R.sub.a2, R.sub.a3, R.sub.a4, and R.sub.Type: GrantFiled: June 6, 1994Date of Patent: May 7, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Akiko Shono, Nobuo Seto
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Patent number: 5514529Abstract: A light-sensitive material having at least one emulsion layer containing silver halide grains, wherein tabular grains having an average aspect ratio of 2 or more occupy at least 50% of the total projected area of all grains, and the material contains a compound which releases two photographically useful groups from one molecule through a timing group and/or a compound which releases a photographically useful group through two timing groups.Type: GrantFiled: June 30, 1992Date of Patent: May 7, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiji Mihayashi, Atsuhiro Ohkawa
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Patent number: 5510234Abstract: Compounds corresponding to formula (I): ##STR1## in which R.sub.1 represents alkyl, alkenyl, cycloalkyl or cycloalkenyl,R.sub.2 and R.sub.3 independently of one another represent H, alkyl, alkenyl, cycloalkyl or cycloalkenyl,R.sub.4 represents alkylene or alkenylene,X represents CO or SO.sub.2,m 0 or 1 andl is a number of 1 to 5,as coupler solvents lead to steeper gradation and greater maximum densities.Type: GrantFiled: August 21, 1995Date of Patent: April 23, 1996Assignee: Agfa - Gevaert AGInventor: Beate Weber
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Patent number: 5508421Abstract: A pyrrolotriazole azomethine dye represented by formula (I), (II) or (IV) is disclosed: ##STR1## Also, a heat transfer dye providing material is disclosed, in which the material includes a support having thereon a dye providing layer containing a heat migrating dye, with the dye providing layer containing at least one pyrrolotriazole azomethine dye represented by any of the above formulae (I), (II) and (IV).Type: GrantFiled: July 22, 1994Date of Patent: April 16, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Makoto Suzuki, Hisashi Mikoshiba, Seiiti Kubodera, Osamu Takahashi, Yasuhiro Shimada, Koushin Matsuoka, Shigeru Yamazaki, Katsuyoshi Yamakawa, Kozo Sato
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Patent number: 5508147Abstract: Yellowing of a processed photographic element is inhibited by incorporating a scavenger comound capable of reacting with magenta coupler, e.g. an epoxy compound, in a layer adjacent a layer containing the magenta coupler. In a preferred embodiment, the magenta coupler containing layer is sandwiched between layers containing the scavenger compound. Prior to processing at least one of these layers contains a solubilizing agent for the scavenger compound. In preferred embodiments, the processing solution used to process the photographic element containing an external solubilizing agent for the scavenger compound, preferably benzyl alcohol.Type: GrantFiled: January 4, 1993Date of Patent: April 16, 1996Assignee: Eastman Kodak CompanyInventors: Krishnan Chari, Wendell F. Smith, Sundaram Krishnamurthy
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Patent number: 5491054Abstract: A silver halide photographic element comprising a light sensitive silver halide containing layer which also contains a 2-equivalent pyrazolone magenta coupler, a thiomorpholine dioxide compound which has an alkoxy substituted aryl group substituent on the ring nitrogen, a compound of formula (I) below, and a hydroquinone compound of formula (R) below: ##STR1## wherein: R.sub.3, R.sub.4 and R.sub.31 are independently an alkyl group or H; R.sub.11, R.sub.12 and R.sub.21 are alkyl groups.The presence of the compound (I) when used with the two-equivalent pyrazolone magenta coupler and compounds (R) and (S), can result in a photographic element with low printout and/or thermal discoloration problems.Type: GrantFiled: December 22, 1994Date of Patent: February 13, 1996Assignee: Eastman Kodak CompanyInventors: Rakesh Jain, William R. Schleigh, Robert C. Stewart
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Patent number: 5484683Abstract: There is disclosed a dye fixing element containing a novel compound which improves the light fastness of an image obtained by the method in which the image is formed by transferring. The above dye fixing element contains a novel hydrazine derivative represented by the following Formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent independently a substituted or unsubstituted alkyl group, cycloalkyl group, alkenyl group, or aralkyl group; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be combined with each other to form a ring, provided that this ring is a non-aromatic heterocyclic ring and the atoms constituting the ring other than the nitrogens of Formula (I) are carbon atoms.Type: GrantFiled: May 6, 1994Date of Patent: January 16, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Jiro Tsukahara, Takanori Hioki, Koki Nakamura
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Patent number: 5484696Abstract: A silver halide photographic element having a light sensitive silver halide which layer also contains a 2-equivalent pyrazolone magenta coupler, a compound of formula (S) below, and a hydroquinone compound of formula (R) below: ##STR1## wherein: R.sub.1 is an alkyl group; and R.sub.2, R.sub.3 and R.sub.4 are independently an alkyl group or H.The presence of the compound (S) when used with the two-equivalent pyrazolone magenta coupler and compound (R), can result in low magenta dye fade, increased wavelength of maximum absorption of the magenta dye and increased magenta dye bandwidth.Type: GrantFiled: December 22, 1994Date of Patent: January 16, 1996Assignee: Eastman Kodak CompanyInventors: Rakesh Jain, William R. Schleigh, Robert C. Stewart
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Patent number: 5482815Abstract: Disclosed is a silver halide photographic photosensitive material comprising a support and, provided thereon, at least one hydrophilic colloid layer including a photosensitive layer wherein the photosensitive layer comprises monodispersed silver halide grains having an average grain size of 0.2 micron or less and comprising at least 90 mol % of silver chloride, the photosensitive layer or a hydrophilic colloid layer provided on the same side of the support as the side on which the photosensitive layer is provided contains a hydrazine derivative, a hydrophilic colloid layer provided above the photosensitive layer contains a water-dispersible fine particle polymer, the photosensitive layer contains substantially no water-dispersible fine particle polymer, and amount of the water-dispersible fine particle polymer contained in the hydrophilic colloid layer is 1 g/m.sup.2 or less and is 5% by weight or more based on the weight of gelatin contained in the hydrophilic colloid layer.Type: GrantFiled: February 18, 1994Date of Patent: January 9, 1996Assignee: Mitsubishi Paper Mills LimitedInventors: Kunihiro Nakagawa, Shoji Akaiwa, Seiichi Sumi, Kenichi Nishi
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Patent number: 5478702Abstract: There is disclosed a method for forming a color image using a silver halide color photographic material having three silver halide photosensitive layers and a non-photosensitive layer, on a support, which comprises subjecting said photographic material wherein a compound represented by the formula (I) is contained in a non-photosensitive layer to scanning exposure with an exposure time being 10.sup.-4 sec or less per picture element, and processing said exposed photographic material with a color developer: formula (I) ##STR1## wherein X represents a hydrogen atom, a hydroxyl group, an amino group, or a sulfonamido group, R.sup.11 and R.sup.12 each represent the group defined for X, or an alkyl group, an aryl group, an amido group, a ureido group, an alkylthio group, an arylthio group, an alkoxy group, or an aryloxy group, and R.sup.Type: GrantFiled: June 6, 1995Date of Patent: December 26, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Kiyoshi Kawai
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Patent number: 5478713Abstract: A silver halide color photographic material comprises a combination of at least one yellow dye-forming coupler of the following general formula (1) with at least one discoloration inhibitor of special amide, phosphorus or hydrazine compound type to prevent the dye images, especially the yellow dye image, formed therein from discoloring or changing their colors; ##STR1## wherein X.sup.3 represents an organic residue completing a nitrogen-containing heterocyclyl group together with ##STR2## Y represents an aromatic or heterocyclic group; and Z represents a group capable of splitting off when the coupler represented by the foregoing formula reacts with the oxidation product of an aromatic primary amine color developing agent.Type: GrantFiled: March 8, 1994Date of Patent: December 26, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Seto Nobuo, Ogawa Akira, Morigaki Masakazu
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Patent number: 5478712Abstract: A ballasted amine is incorporated in a silver halide photographic element which contains a 2,4-disulfonamidophenol which functions as a scavenger for oxidized developing agent. The 2,4-disulfonamidophenol serves to avoid color contamination while the ballasted amine serves to reduce dye stain.Type: GrantFiled: November 22, 1993Date of Patent: December 26, 1995Assignee: Eastman Kodak CompanyInventors: Stephen P. Singer, Susan D. Hill
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Patent number: 5476759Abstract: A silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer is disclosed, wherein said light-sensitive material contains a DIR coupler represented by formula (I): ##STR1## wherein A represents a coupler residue; R represents an alkyl group having from 1 to 4 carbon atoms or a pyridyl group; and n represents 1 when A represents a phenol type or naphthol type coupler residue, or n represents 0 when A represents other coupler residues, and said emulsion layer contains chemically sensitized silver halide grains which individually have a distinct layer comprising silver iodobromide containing from 7 to 45 mol % of silver iodide and which individually have an overall silver iodide content of more than 4 mol %.Type: GrantFiled: July 28, 1993Date of Patent: December 19, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiji Mihayashi, Seiji Ichijima, Toshio Kawagishi, Naoki Saito, Masuji Motoki
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Patent number: 5476756Abstract: Yellowing of a processed photographic element is inhibited by incorporating a scavenger compound capable of reacting with magenta coupler, e.g. an epoxy compound, in a layer adjacent a layer containing the magenta coupler. At least one of these layers contains a solubilizing agent for the scavenger compound. In preferred embodiments, the processing solution used to process the photographic element contains an external solubilizing agent for the scavenger compound, preferably benzyl alcohol.Type: GrantFiled: June 8, 1994Date of Patent: December 19, 1995Assignee: Eastman Kodak CompanyInventors: Krishnan Chari, Wendell F. Smith, Sundaram Krishnamurthy
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Patent number: 5474882Abstract: Disclosed is a silver halide color photographic material. The material comprises a support having thereon at least one photosensitive silver halide emulsion layer and at least one non-photosensitive hydrophilic colloid layer.Type: GrantFiled: May 9, 1994Date of Patent: December 12, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Akiko Shono
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Patent number: 5474884Abstract: There is disclosed a silver halide color photographic material and a method for forming an image using the same.Type: GrantFiled: May 1, 1995Date of Patent: December 12, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Kentaro Okazaki
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Patent number: 5468604Abstract: A stabilized photographic dispersion is prepared by adding a hydrophobic, photographically inert compound which has a logP.sub.(calc) greater than about 9 and does not solidify or gel the dispersed phase to a photographic dispersion comprising an aqueous medium and a dispersed liquid organic phase comprising a photographically useful compound which is (i) soluble in organic solvents, (ii) substantially insoluble in water, and (iii) subject to particle growth of at least 10% of its initial particle size when maintained in said dispersion in the absence of the added photographically inert compound.Type: GrantFiled: November 18, 1992Date of Patent: November 21, 1995Assignee: Eastman Kodak CompanyInventors: Paul L. Zengerle, David D. Miller, Thomas H. Whitesides, John B. Rieger, Vincent J. Flow, III, Walter H. Isaac
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Patent number: 5466569Abstract: A color photographic material, at least one layer of which contains a compound of the formula (I) ##STR1## in which X means --NH--, --NR-- or --O--,R means alkyl, cycloalkyl or aryl,R.sub.1 means a chemical bond or a divalent bridging member,R.sub.2 and R.sub.3 mean alkyl, alkoxy, alkenyl, cycloalkyl, aryl or aryloxy, or two residues R.sub.2 or R.sub.3 mean the remaining atoms of a benzene ring condensed with the phenyl residue andm and n mean 0 to 3, wherein all alkyl, alkoxy, cycloalkyl, alkenyl, aryl and aryloxy residues may be further substituted and in each of the two phenyl residues a residue R.sub.1, R.sub.2 or R.sub.3 is in para position relative to the oxygen atom, is characterized by improved dye stability after processing.Type: GrantFiled: June 9, 1994Date of Patent: November 14, 1995Assignee: Agfa-Gevaert AGInventors: Beate Weber, Jorg Hagemann, Markus Geiger
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Patent number: 5466568Abstract: A photographic element and imaging process used therewith provides reduced fogging where the element comprises a light sensitive silver halide layer containing (1) an azopyrazolone masking coupler and (2) a ballasted aromatic nitro compound having a reduction peak potential which is more positive than -1.3 V vs. the Standard Calomel Electrode.Type: GrantFiled: September 30, 1993Date of Patent: November 14, 1995Assignee: Eastman Kodak CompanyInventors: Daniel L. Kapp, Robert J. Ross, Janet N. Younathan, Stephen P. Singer
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Patent number: 5464731Abstract: A silver halide color photographic material comprising a support provided thereon at least one light sensitive silver halide emulsion layer and at least one light insensitive layer, wherein the light insensitive layer contains at least one of the compounds represented by Formula (I) and at least one of the compounds represented by Formula (II); and the amount of the compounds represented by Formula (II) in the above light insensitive layer is 15 to 100 mole % of the amount of the compounds represented by Formula (I) in the same light insensitive layer: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represent an alkyl group, provided that a total of carbon numbers of R.sub.1 and R.sub.2 and a total of carbon numbers of R.sub.3 and R.sub.4 each are 16 or more and 60 or less and that a hydroquinone structure is not involved in R.sub.1, R.sub.2, R.sub.3, and R.sub.4.Type: GrantFiled: March 1, 1994Date of Patent: November 7, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobutaka Ohki, Naoki Asanuma, Osamu Takahashi
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Patent number: 5464733Abstract: Disclosed is a multilayer color photographic element comprising a support having coated thereon photographic silver halide emulsion layers, the layers including blue sensitive, green sensitive and red sensitive layers, the photographic element comprising at least one of a bleach accelerating releasing coupler and a bleach accelerating silver salt in at least one layer of the photographic element and a layer containing finely divided silver. An interlayer is disposed between the layer containing finely divided silver and a layer containing dye forming coupler.Type: GrantFiled: January 26, 1993Date of Patent: November 7, 1995Assignee: Eastman Kodak CompanyInventor: James A. Friday
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Patent number: 5464732Abstract: A silver halide color photographic light-sensitive material is disclosed. The light-sensitive material comprises a support having thereon a plurality of silver halide emulsion layers, wherein a silver halide emulsion layer arranged at the position nearest to the support among said silver halide emulsion layers contains a dye-forming coupler and a color stain preventing agent represented by Formula HQ-1 in an amount of 1 mol % to 5 mol % of the dye-forming coupler. ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently a hydrogen atom, a halogen atom or a specified substituent, provided that at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is a group having 6 or more carbon atoms in total.Type: GrantFiled: June 2, 1994Date of Patent: November 7, 1995Assignee: Konica CorporationInventors: Shuji Kida, Yukio Oya, Akiyoshi Tai
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Patent number: 5462845Abstract: A silver halide color photographic light-sensitive material capable of providing a dye image having excellent color reproduction performance, sharpness and image fastness is disclosed.Type: GrantFiled: July 14, 1994Date of Patent: October 31, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Yasuhiro Yoshioka
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Patent number: 5460933Abstract: Undesirable particle growth of particles comprising a hydrazide oxidized developer in a photographic dispersion can be significantly reduced when the hydrazide scavenger is in the form of a dispersion of crystalline solid particles dispersed in an aqueous medium. The dispersion is prepared by milling crystalline solid particles of the scavenger in an aqueous medium in the presence of a dispersing agent and in the substantial absence of an organic solvent.Type: GrantFiled: February 18, 1994Date of Patent: October 24, 1995Assignee: Eastman Kodak CompanyInventors: Mary C. Brick, Norma B. Platt, Paul L. Zengerle, Jeffery L. Hall
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Patent number: 5459023Abstract: A silver halide color photographic material comprising a support having thereon at least one layer containing at least one compound represented by formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom or a substituent; R.sub.5 and R.sub.6 each represents a substituent; m and n each represents an integer of from 0 to 4; provided that said compound of formula (I) has a phosphonic acid ester moiety or a phosphonic acid amide moiety, wherein the carbon atom of the C-P bond contained in said moiety (i) constitutes a part of the skeleton of said compound of formula (I), said skeleton being represented by formula (A) ##STR2## or (ii) is contained in a substituent group represented by R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, or R.sub.6 ; wherein two or more of R.sub.1 to R.sub.6 may combine with said phosphonic acid ester or amide moiety to form a ring.Type: GrantFiled: November 9, 1994Date of Patent: October 17, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Kohzaburoh Yamada, Yasuhiro Yoshioka
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Patent number: 5459014Abstract: A method for forming a color photographic image is disclosed. The method comprises steps ofimagewise exposing a silver halide color photographic light-sensitive material comprising a support, and a silver halide emulsion layer and a non-light-sensitive layer each provided on the support,developing the light-sensitive material with a color developer, andbleach-fixing the developed light-sensitive material with a bleach-fixing solution,wherein the silver halide emulsion layer or the non-light-sensitive layer contains a compound represented by the following Formula 1 and the color developer contains a chloride in an amount of not less than 6.times.10.sup.-2 moles per liter; ##STR1## wherein R.sub.1 is a tertiary alkyl group; R.sub.2 is a primary or a secondary alkyl group; R.sub.3, R.sub.4 and R.sub.5 are each an alkyl group, an alkoxycarbonyl group, a phenoxycarbonyl group, an alkoxy group, a phenoxy group or a phenylthio group, the groups represented by R.sub.1, R.sub.3, R.sub.4 or R.sub.Type: GrantFiled: September 7, 1994Date of Patent: October 17, 1995Assignee: Konica CorporationInventors: Toyoki Nishijima, Motoi Nishimura
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Patent number: 5459020Abstract: Silver halide color photographic materials are described in which anti-fading agents and anti-staining agents are included in silver halide emulsion layers which contain pyrazoloazole-based couplers which have been established by coating on a reflective supports, the base material of which is covered with a composition in which a white pigment has been admixed with, and dispersed in, a resin of which polyester forms the principal component.Type: GrantFiled: December 9, 1993Date of Patent: October 17, 1995Assignee: Fuji Photo Film Co., Ltd.Inventor: Takehiko Sato
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Patent number: 5457019Abstract: A silver halid photographic emulsion contains an antioxidizing agent.Type: GrantFiled: January 21, 1994Date of Patent: October 10, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Nozawa, Mitsuhiro Uchida