专利检索_...在银盐形成过程中影响颗粒生长的物质专利检索_...在银盐形成过程中影响颗粒生长的物质专利检索查询

序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
41		DE69302147	1993-08-25	DE69302147D1	1996-05-15	MASKASKY JOE EDWARD
A process is disclosed of preparing an emulsion for photographic use comprised of silver halide grains and a gelatino-peptizer dispersing medium in which morphologically unstable tabular grains having {111} major faces account for greater than 50 percent of total grain projected area and contain at least 50 mole percent chloride, based on silver. The emulsion additionally contains at least one 2-hydroaminoazine adsorbed to and morphologically stabilizing the tabular grains. Protonation releases 2-hydroaminoazine from the tabular grain surfaces into the dispersing medium. Released 2-hydroaminoazine is replaced on the tabular grain surfaces by adsorption of a photographically useful 5-iodobenzoxazolium compound, thereby concurrently morphologically stabilizing the tabular grains and enhancing their photographic utility, and the released 2-hydroaminoazine is removed from the dispersing medium.
42		DE69205210	1992-05-12	DE69205210T2	1996-05-15	TSAUR ALLEN KEH-CHANG; KAM-NG MAMIE
A process is disclosed of preparing a photographic emulsion containing tabular silver halide grains exhibiting a reduced degree of total grain dispersity. After forming a population of silver halide grain nuclei containing parallel twin planes, a portion of the silver halide grain nuclei are ripened out. The silver halide grain nuclei containing parallel twin planes remaining are then grown to form tabular silver halide grains. The total grain dispersity of the emulsion is reduced by incorporating bromide ion in the dispersing medium prior to forming the silver halide grain nuclei and, at the time parallel twin planes are formed in the silver halide grain nuclei, a polyalkylene oxide block copolymer surfactant containing at least three terminal lipophilic alkylene oxide block units each linked through a hydrophilic alkylene oxide block linking unit accounting for at least 4 percent of the molecular weight of the copolymer.
43		DE69204209	1992-05-12	DE69204209T2	1996-04-18	TSAUR ALLEN KEH-CHANG; KAM-NG MAMIE
A process is disclosed of preparing a photographic emulsion containing tabular silver halide grains exhibiting a reduced degree of total grain dispersity. After forming a population of silver halide grain nuclei containing parallel twin planes, a portion of the silver halide grain nuclei are ripened out. The silver halide grain nuclei containing parallel twin planes remaining are then grown to form tabular silver halide grains. The total grain dispersity of the emulsion is reduced by incorporating bromide ion in the dispersing medium prior to forming the silver halide grain nuclei and, at the time parallel twin planes are formed in the silver halide grain nuclei, a grain dispersity reducing concentration of a polyalkylene oxide block copolymer surfactant is present comprised of two terminal lipophilic alkylene oxide block units linked by a hydrophilic alkylene oxide block unit accounting for at least 4 percent of the molecular weight of the copolymer.
44		DE69301702	1993-08-25	DE69301702D1	1996-04-11	MASKASKY JOE EDWARD
A chemically sensitized high chloride tabular grain emulsion is disclosed. The tabular grains have {100} major faces. Chemically sensitized silver halide epitaxial deposits containing less than 75 percent of the chloride ion concentration of the tabular grains and accounting for less than 20 mole percent of total silver are located at one or more of the corners of the tabular grains. The emulsions are prepared by first forming the host tabular grains, epitaxially depositing silver halide selected to contain less than 50 percent of the chloride ion concentration of the tabular grains, adsorbing a photographically useful compound to the surfaces of the silver halide epitaxial deposits, and chemically digesting the emulsion.
45	Silver halide emulsion colour photographic chemical sensitisation	DE4434971	1994-09-30	DE4434971A1	1996-04-04	OEHLSCHLAEGER HANS DR; BORST HANS-ULRICH DR; KAPITZA DETLEV DR; SIEGEL JOERG DR
Chemical sensitisation of Ag halide (AgX) emulsions with: (a) Au, and (b) S or Se cpds. in the presence of spectral sensitisers comprises adding at least 10 wt.% of the optimum amt. of dye for sensitisation and halogen-substd. tetraazaindene (I), in an amt. of 10<-6> - 10<-3> mole/mole AgX before or during addn. of the chemical sensitisers but after pptn.
46		DE3650485	1986-12-18	DE3650485D1	1996-03-28	MASKASKY JOE EDWARD

47		DE69301303	1993-11-10	DE69301303D1	1996-02-22	GOAN KAZUYOSHI
A method for preparing a silver iodobromide emulsion comprising silver iodobromide grains containing an average silver iodide content of 2 mol% or less is provided, wherein the silver iodobromide emulsion is prepared by incorporating simultaneously a silver salt solution and a solution of bromide and iodide salts into a hydrophilic colloid solution containing silver halide seed grains to grow the silver iodobromide grains from the seed grains, wherein the total volume of the solutions of the silver salt and the bromide and iodide salts is within a range of 2 to 10 times the volume of the hydrophilic colloid solution containing the seed grains in an amount of 0.5 to 5.0% by volume.
48		DE69202667	1992-10-09	DE69202667T2	1996-02-08	HENRY MARIAN SUE; FINN SANDRA; PRICE HARRY J
A process for controlling the silver halide grain-to-grain distribution of a variable contrast dye in a light sensitive silver halide emulsion layer of a variable contrast photographic element, and thereby adjusting the low contrast characteristic curve of the element, is disclosed comprising the process steps of adding a green variable contrast sensitizing dye of the following formula (I) to a silver halide emulsion for a variable contrast photographic element, adding a blue sensitizing dye of the following formula (II) to the same silver halide emulsion, and coating the emulsion on a support. In the process, the green and blue sensitizing dyes are added to the emulsion at substantially the same time, and the green dye is added in an amount less than that required to impart maximum sensitivity to all of the silver halide in the emulsion. In formula (I), R<1>, R<2>, R6 and R7 each independently represent hydrogen, halogen, hydroxy, or substituted or unsubstituted alkyl, alkenyl, alkoxy, alkylamino, and R5 each independently represent substituted or unsubstituted alkyl or aryl. X represents a counterion as needed to balance the charge of the molecule. In formula (II), Z represents the atoms necessary to complete an optionally further substituted five- or six-membered heterocyclic ring, R8 represents substituted or unsubstituted alkyl or aryl, and R9 represents hydrogen, substituted or unsubstituted alkyl or aryl, or a heterocycle.
49		DE69019919	1990-11-06	DE69019919T2	1995-11-30	IHAMA MIKIO
A silver halide photographic emulsion contains silver halide grains comprising at least two portions, i.e., a core and an outermost shell with different silver halide compositions and having an average aspect ratio of less than 8. The core consists of silver iodobromide, silver chloroiodobromide, silver chlorobromide, or silver bromide. An average silver iodide content of the outermost shell is higher than that of the core and is 6 mol% or more. The silver halide grains are subjected to all of selenium sensitization, gold sensitization, and sulfur sensitization.
50		DE69205059	1992-05-12	DE69205059D1	1995-11-02	TSAUR ALLEN KEH-CHANG; KAM-NG MAMIE
A process is disclosed of preparing a photographic emulsion containing tabular silver halide grains exhibiting a reduced degree of total grain dispersity. After forming a population of silver halide grain nuclei containing parallel twin planes, ripening out a portion of the silver halide grain nuclei. The silver halide grain nuclei containing parallel twin planes remaining are then grown to form tabular silver halide grains. The total grain dispersity of the emulsion is reduced by incorporating bromide ion in the dispersing medium prior to forming the silver halide grain nuclei and, at the time parallel twin planes are formed in the silver halide grain nuclei, a polyalkylene oxide block copolymer surfactant containing terminal hydrophilic alkylene oxide block units linked by a lipophilic alkylene oxide block unit accounting for at least 4 percent of the molecular weight of the copolymer.
51		DE69020983	1990-08-17	DE69020983D1	1995-08-24	MCDUGLE WOODROW GORDON; KEEVERT JOHN EDWARD; MARCHETTI ALFRED PAUL
A photographic silver halide emulsion comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a hexacoordination complex that satisfies the formula: [M(O)2L4] where M is a heavy transition metal selected from groups 6, 7, and 8 of the periodic table of elements; L is a bridging ligand capable of incorporation in the cubic crystal lattice; and n is -2 or -3. i
52		DE68923495	1989-08-14	DE68923495D1	1995-08-24	INOUE NORIYUKI FUJI PHOTO FILM; YAGIHARA MORIO FUJI PHOTO FILM
A direct positive image forming method comprising development processing an imagewise exposed direct positive photographic light-sensitive material which comprises a support having thereon at least one layer containing internal latent image type silver halide grains not having been previously fogged after fogging treatment or while fogging treatment, wherein the fogging treatment is conducted in the presence of a compound represented by the following general formula (I): wherein A1 and A2 both represent a hydrogen atom or one of A1 and A2 represents a hydrogen atom and the other represents a sulfonyl group or an acyl group; G1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, or an iminomethylene group; L1 represents a divalent linkage group; X1 represents -O- or (wherein R4 represents a hydrogen atom, an alkyl group or an aryl group); Y1 represents and R2 each represents an aliphatic group, an aromatic group, a heterocyclic group, OR5 or -NR5R6 (wherein R5 represents an aliphatic group, an aromatic group or a heterocyclic group; and R6 represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group); and R3 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aralkyl group, an aryloxy group or an amino group. In accordance with the method of the present invention direct positive images having a high maximum image density and a low minimum image density and being stable even when preserved under high temperature and high humidity conditions.
53		AT90202220	1990-08-17	AT125369T	1995-08-15	MCDUGLE WOODROW GORDON C O EAS; DEPARTMENT STATE STREET; KEEVERT JOHN EDWARD JR C O EAS; MARCHETTI ALFRED PAUL C O EAST; STATE STREET
A photographic silver halide emulsion comprised of radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure internally containing a hexacoordination complex that satisfies the formula: [M(O)2L4] where M is a heavy transition metal selected from groups 6, 7, and 8 of the periodic table of elements; L is a bridging ligand capable of incorporation in the cubic crystal lattice; and n is -2 or -3. i
54		DE3345883	1983-12-19	DE3345883C2	1995-06-14	MASKASKY JOE EDWARD
Silver halide emulsions of limited iodide content, processes for the preparation of these emulsions, photographic elements incorporating these emulsions, and processes for the use of the photographic elements are disclosed. In the emulsions silver halide grains predominantly bounded by {111} crystal faces and containing insufficient iodide to direct silver salt epitaxy to selected surface sites of the grains are present. Silver salt is epitaxially located on and substantially confined to selected surface sites of the silver halide grains, this being accomplished by the use of an adsorbed site director.
55		DE69018029	1990-11-28	DE69018029D1	1995-04-27	HOULE WILLIAM ANTHONY; TUFANO THOMAS PETER

56	FOTOGRAFISCHES, BEI TAGESLICHT VERARBEITBARES AUFZEICHNUNGSMATERIAL MIT HALBTONGRADATION.	AT89113416	1989-07-21	AT98385T	1993-12-15	BAHNMUELLER WILFRIED DR; FINKENER JUTTA DIPL-ING; HIMMELREICH DIETER DR; REIBER WOLFGANG DIPL-ING; SCHWARZ HEINZ DIPL-ING

57		DE4214196	1992-04-30	DE4214196A1	1993-11-04	KLOETZER SIEGHART DIPL ING; LAPP OTTO DR
A color photographic silver halide material comprising at least one negatively developing, green-sensitive silver halide emulsion layer containing at least one magenta coupler can be adjusted to any desired sensitivity of that layer without any changes in other sensitometric properties by addition of at least one compound corresponding to general formula (I) wherein is hydrogen or halogen, Y is NR2, O or S and is hydrogen or C1-4 alkyl.
58		DE3784887	1987-12-28	DE3784887T2	1993-07-29	HASEBE KAZUNORI; ASAMI MASAHIRO; OHSHIMA NAOTO; SHIBA KEISUKE; NISHIKAWA TOSHIHIRO; TANABE OSAMI

59	PROCESS FOR THE PREPARATION OF HIGH CHLORIDE TABULAR GRAIN EMULSIONS (IV)	CA2095218	1992-09-15	CA2095218A1	1993-03-21	MASKASKY JOE E
2095218 9306522 PCTABS00021 A process of preparing a radiation sensitive high chloride high aspect ratio tabular grain emulsion is disclosed wherein silver ion is introduced into a gelatino-peptizer dispersing medium containing a stoichiometric excess of chloride ions of less than 0.5 molar, a pH of at least 4.6, and a triaminopyrimidine grain growth modifier containing mutually independent 4, 5 and 6 ring position amino substituents, the 4 and 6 ring position substituents being hydroamino substituents.
60	PROCESS FOR THE PREPARATION OF HIGH CHLORIDE TABULAR GRAIN EMULSIONS (II)	CA2077010	1992-08-27	CA2077010A1	1993-03-21	MASKASKY JOE E
IMPROVED PROCESS FOR THE PREPARATION OF HIGH CHLORIDE TABULAR GRAIN EMULSIONS (II) A process of preparing a radiation sensitive high chloride high aspect ratio tabular grain emulsion is disclosed wherein silver ion is introduced into a gelatino-peptizer dispersing medium containing a stoichiometric excess of chloride ions of less than 0.5 molar and a grain growth modifier of the formula: where Z2 is -C(R2)= or -N=; Z3 is -C(R3)= or -N=; Z4 is -C(R4)= or -N=; Z5 is -C(R5)= or -N=; Z6 is -C(R6)= or -N=; with the proviso that no more than one of Z4, Z5 and Z6 is -N=; R2 is H, NH2 or CH3; R3, R4 and R5 are independently selected, R3 and R5 being hydrogen, hydroxy, halogen, amino or hydrocarbon and R4 being hydrogen, halogen or hydrocarbon, each hydrocarbon moiety containing from 1 to 7 carbon atoms; and R6 is H or NH2.

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