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11. 发明专利

JP2000314944A COLOR PHOTOGRAPHIC ELEMENT 失效
公开(公告)号：JP2000314944A
公开(公告)日：2000-11-14
申请号：JP2000117199
申请日：2000-04-13
申请人： EASTMAN KODAK CO
发明人： BRINGLEY JOSEPH F , FRIDAY JAMES A
IPC分类号： G03C7/20 , G03C1/035 , G03C1/76 , G03C7/30 , G03C7/392
摘要： PROBLEM TO BE SOLVED: To obtain a color photographic element having high sensitivity and less liable to lower image sharpness. SOLUTION: The color photographic element includes a transparent film substrate and blue, green and red recording layer units coated on the substrate. In the photographic element, each image dye exhibits at least 25 nm half-width of an absorption peak not occupied by dyes other than the dye. The red recording layer unit is divided into at least two hydrophilic colloidal layers containing red sensitized silver halide grains and silver halide grains having the maximum sensitivity are present in a hydrophilic colloidal layer disposed in such a way that the layer first receives radiation for exposure. Red light scattering silver halide grains not containing an adsorbed spectral sensitizing dye, having 0.05-0.7 μm equivalent circular diameter and oriented at random are introduced into only the hydrophilic colloidal layer disposed in such a way that the layer first receives radiation for exposure by 0.01-0.2 g/m2 coating weight on the basis of the amount of silver. The silver halide grains of the blue, green and red recording layer units contain >50 mol% bromide.

12. 发明专利

JP2000314936A COLOR PHOTOGRAPHIC ELEMENT 失效
公开(公告)号：JP2000314936A
公开(公告)日：2000-11-14
申请号：JP2000118519
申请日：2000-04-14
申请人： EASTMAN KODAK CO
发明人： BRINGLEY JOSEPH F , FRIDAY JAMES A
IPC分类号： G03C7/00 , G03C1/035 , G03C1/12 , G03C1/74 , G03C7/20 , G03C7/30
摘要： PROBLEM TO BE SOLVED: To obtain a color photographic element having enhanced photographic sensitivity of a red recording layer unit. SOLUTION: The color photographic element includes a transparent substrate and blue, green and red recording layer units containing each image dye forming coupler. Each of the layer units has radiation sensitive silver halide grains containing >50 mol% bromide on the basis of the amount of silver and each image dye-exhibits 25 nm half-width of an absorption peak not occupied by dyes other than the dye. The red recording layer unit has a plurality of emulsion layers, the emulsion layers are disposed in such a way that each of the layers receives radiation for exposure before a lower layer receives radiation and each of the layers contains silver grains having higher sensitivity than silver grains in a lower layer. A red light reflecting layer not containing a red absorbing dye and containing flat platy silver halide grains having 0.03-0.12 μm thickness, an average aspect ratio of >20 and 0.5-1.25 g/m2 coating weight and formed from >50 mol% bromide on the basis of the amount of silver is present between two emulsion layers in the red recording unit.

13. 发明专利

JP2004110029A Photographic element 审中-公开
公开(公告)号：JP2004110029A
公开(公告)日：2004-04-08
申请号：JP2003320975
申请日：2003-09-12
申请人： Eastman Kodak Co , イーストマンコダックカンパニー
发明人： KEEVERT JOHN E , SINGER STEPHEN P , REED KENNETH J , LUSHINGTON KENNETH J , BRICK MARIE CHRISTINE , FRIDAY JAMES A
IPC分类号： G03C1/04 , G03C7/30 , G03C7/305
CPC分类号： G03C7/30594 , G03C1/0051 , G03C1/04 , G03C7/3022 , G03C7/3029 , G03C7/30541 , G03C2007/3034 , Y10S430/156
摘要： PROBLEM TO BE SOLVED: To provide a photographic element with increased photographic sensitivity of silver halide emulsions. SOLUTION: The photographic element comprises a support and at least two silver halide emulsion layers and contains an electron transfer agent releasing compound of the formula (I): CAR 1 -(L) n -ETA (where CAR 1 is a carrier moiety capable of releasing -(L) n -ETA; L is a divalent linking group; n is 0, 1 or 2; and ETA is a 1-aryl-3-pyrazolidinone electron transfer agent, wherein clogP is ≥2.40 and a sum total of the Hammett's σ(para) values of substituents on the 1-aryl ring is ≤0.51) and a development accelerator releasing compound of the formula (II): CAR 2 -(SAM)-NX 1 -NX 2 X 3 (where CAR 2 is a carrier moiety capable of releasing -(SAM)-NX 1 -NX 2 X 3 ; SAM is a silver absorbing moiety; and -NX 1 -NX 2 X 3 is a hydrazine group). COPYRIGHT: (C)2004,JPO

14. 发明专利

JP2002162716A COLOR PHOTOGRAPHIC ELEMENT EXHIBITING HIGH RED SENSITIVITY 审中-公开
公开(公告)号：JP2002162716A
公开(公告)日：2002-06-07
申请号：JP2001319077
申请日：2001-10-17
申请人： EASTMAN KODAK CO
发明人： BRINGLEY JOSEPH F , FRIDAY JAMES A , VITALE MARCELLO
IPC分类号： G03C7/20 , G03C1/035 , G03C7/30
摘要： PROBLEM TO BE SOLVED: To enhance the sensitivity of a red light sensitive record while maintaining and improving the record sharpness. SOLUTION: The color photographic element is comprised by containing (a) a red record comprising a less and a more red light sensitive silver halide emulsion layers in which successively from a support each has one or more kind of cyan dye-forming couplers in relation, (b) a green record comprising a less and a more green light sensitive silver halide emulsion layers in which farther from the support body, successively from the support body, each has one or more kinds of magenta dye-forming couplers in relation, and (c) the support which carries a blue record comprising a less and a more blue light sensitive silver halide emulsion layers in which much farther from the support, successively from the support, each has one or more kinds of yellow dye-forming couplers in relation, and, (d) a relatively non-light sensitive 'small 3-D emulsion layer', which is substantially free red light absorption dye, is located below or only below the red light sensitive layer of the maximum sensitivity of the red record.

15. 发明专利

JP2002162711A SILVER HALIDE COLOR PHOTOGRAPHIC ELEMENT 审中-公开
公开(公告)号：JP2002162711A
公开(公告)日：2002-06-07
申请号：JP2001319623
申请日：2001-10-17
申请人： EASTMAN KODAK CO
发明人： BRINGLEY JOSEPH F , FRIDAY JAMES A , SINGER STEPHEN P , VITALE MARCELLO
IPC分类号： G03C1/035 , G03C1/34 , G03C1/76 , G03C1/825 , G03C7/30 , G03C7/305 , G03C7/392
摘要： PROBLEM TO BE SOLVED: To provide a color photographic element which shows more improved photographic sensitivity than conventional one. SOLUTION: The silver halide color photographic element is formed by having the following things on a support body, i.e., (1) a photosensitive silver halide emulsion layer, (2) the nitrogen heterocyclic compound is located in the photosensitive layer or in a layer abutting on the photosensitive layer and has a minimum of heteroatoms, and, the nitrogen heterocyclic compound does not react with an oxidized developing agent, does not contain free thiol substituents, and has a theoretical logarithmic distribution factor (ClogP) enough to increase the photographic sensitivity of the element compared to the same element without containing the compound; and (3) the light reflection silver halide material, provided that the nitrogen-heterocyclic compound and the light reflection silver halide material are located either (a) in different layers of the element located close enough to each other so as to achieve a super-additive speed increase or (b) in the same photosensitive layer.

16. 发明专利

JP2001312019A PHOTOGRAPHIC ELEMENT 失效
公开(公告)号：JP2001312019A
公开(公告)日：2001-11-09
申请号：JP2001085536
申请日：2001-03-23
申请人： EASTMAN KODAK CO
发明人： MASKASKY JOE E , REED KENNETH J , SCACCIA VICTOR P , FRIDAY JAMES A
IPC分类号： G03C7/00 , G03C1/005 , G03C1/035 , G03C1/04 , G03C1/08 , G03C1/10 , G03C1/12 , G03C7/30 , G03C7/305 , G03C7/32
摘要： PROBLEM TO BE SOLVED: To provide a photographic element in which the response of an emulsion particle to light is maximized. SOLUTION: A polychromatic photographic element is constituted by containing substrates which carry a cyan dyestuff image forming unit containing a red-sensitive silver halide emulsion layer relationally having cyan dyestuff forming coupler, a magenta dyestuff image forming unit containing a green- sensitive silver halide emulsion layer relationally having magenta dyestuff forming coupler and a yellow dyestuff image forming unit containing a blue- sensitive silver halide emulsion layer relationally having yellow dyestuff forming coupler. At least one among emulsion layers described above contains bromide of >50 mole%, contains planar particles, which are deposited in aqueous medium containing a deflocculant of water-dispersible cationic starch and have 111} main plane occupying total particle projected area of >50%, and further contains a fragmentizable electron donor sensitizer.

17. 发明专利

JP2000305228A COLOR PHOTOGRAPHIC FILM HAVING HIGH BLUE-SENSITIVITY 失效
公开(公告)号：JP2000305228A
公开(公告)日：2000-11-02
申请号：JP2000105394
申请日：2000-04-03
申请人： EASTMAN KODAK CO
发明人： BRINGLEY JOSEPH F , FRIDAY JAMES A , BRYANT ROGER A
IPC分类号： G03C7/20 , G03C1/035 , G03C1/12 , G03C1/74 , G03C7/30
摘要： PROBLEM TO BE SOLVED: To enhance contract without sacrificing image form sensitivity. SOLUTION: A layer (a) among the blue-recording layer unit of this color photographic film contains most sensitive silver halide grains for forming a latent image and having a bromide content of >50 mol% of silver and a corresponding circle diameter of 0.05-0.5 μm and a content of random oriented silver halide grains (having not adsorbed a blue-absorbing dye) of 0.00-0.5 g/m2, and a blue light reflective layer (b) is located so as to receive the light from the layer (a) that contains flat silver halide grains containing no blue absorbing dye and having a thickness of 0.12-0.15 μm and an average aspect ratio of >15 and a coating-attached amount of 0.4-1.5 g/m2 and a bromide content of >50 mol%, and this layer (b) is contained in the blue-recording layer unit, and the total coating amount of the flat silver halide grains in the blue light reflective layer (b) and the randomly-located silver halide grains in the layer (a) is >=0.5 g/m2.

18. 发明专利

JP2000221645A MULTICOLOR PHOTOGRAPHIC ELEMENT 失效
公开(公告)号：JP2000221645A
公开(公告)日：2000-08-11
申请号：JP2000018036
申请日：2000-01-25
申请人： EASTMAN KODAK CO
发明人： FRIDAY JAMES A , BRYANT ROGER A , MUENTER ANNABEL A , LENHARD JEROME R
IPC分类号： G03C7/00 , G03C1/005 , G03C1/035 , G03C1/10 , G03C7/30 , G03C7/392
摘要： PROBLEM TO BE SOLVED: To attain high sensitivity in a color negative film while maintaining minimum graininess, acceptable pressure desensitization and sufficient acutance. SOLUTION: The multicolor photographic element has photosensitive layers at least one of which contains a flat, plate-like grain silver halide emulsion having at least 95% bromide content and

19. 发明专利

JP2000180999A PHOTOGRAPHIC ELEMENT 失效
公开(公告)号：JP2000180999A
公开(公告)日：2000-06-30
申请号：JP35699899
申请日：1999-12-16
申请人： EASTMAN KODAK CO
发明人： MASKASKY JOE EDWARD , REED KENNETH J , SCACCIA VICTOR P , FRIDAY JAMES A
IPC分类号： G03C7/00 , G03C1/005 , G03C1/035 , G03C1/04 , G03C1/08 , G03C1/10 , G03C1/825 , G03C7/30
摘要： PROBLEM TO BE SOLVED: To provide a photographic element having remarkably enhanced photographic characteristics. SOLUTION: The photographic element consists of a substrate and at least one emulsion layer coated on the substrate and containing (a) radiation sensitive silver halide grains, (b) a sensitizer for the silver halide grains, (c) a hydrophilic colloidal organic vehicle containing a deflocculant for the silver halide grains and (d) a light scattering particulate material. The silver halide grains include flat, plate-like grains having an average aspect ratio of at least 2.0, having 111} principal face, containing >50 mol% bromide based on the amount of silver and occupying >50% of the total projection area of all the grains. The sensitizer includes a sensitizer that is an electron donor and can be fragmented. The deflocculant is water-dispersible cationic starch. The light scattering particulate material has an aspect ratio of

20. 发明专利

DE69936252D1 未知
公开(公告)号：DE69936252D1
公开(公告)日：2007-07-19
申请号：DE69936252
申请日：1999-12-16
申请人： EASTMAN KODAK CO
发明人： ALLWAY PHILIP ARTHUR , CLARK BERNARD A , GODDARD JOHN D , FRIEDRICH LOUIS ELBERT , FRIDAY JAMES A , SINGER STEPHEN PAUL , VITALE MARCELLO
IPC分类号： G03C1/10 , G03C7/00 , G03C1/08 , G03C7/392

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