Patent US5698379A successfully refreshed from Google Patents.
US5698379A
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Rapid image presentation method employing silver chloride tabular grain photographic elements
Assignee: Eastman Kodak Co
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Filing: 1996-10-15
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Granted: 1997-12-16
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Expires: 2016-10-15
Abstract
Abstract Silver chloride color negative films can be rapidly processed using shortened color development times and specific amounts of color developing agent and bromide ion. After development, and optionally desilvering or fixing, the developed film is scanned to form density representative digital signals for the color records. These signals are then digitally manipulated to correct both interimage interactions and gamma mismatches around the color records to produce a digital record that is capable of providing a display image having desired aim color and tone scale reproduction. That digital record can then be stored or used to provide corrected display images, such as color prints, using output display devices.
Inventors
- 👤 Anne E. Bohan
- 👤 John M. Buchanan
- 👤 Richard P. Szajewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:18
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3041; G03C7/3022; G03C7/407; G03C7/413; G03C1/00; G03C1/005; G03C1/0051; G03C1/76; G03C1/825; G03C1/83; G03C1/035; G03C2001/03511; G03C2001/03535; G03C2007/3027; G03C2007/3043; G03C2200/00; G03C2200/03; G03C2200/26; G03C2200/44; G03C2200/52; G03C2200/60; G03C7/32; G03C7/333; Y; Y10; Y10S; Y10S430/00; Y10S430/164
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
180 words
A method for providing a color display image comprising the steps of: A) color developing an imagewise exposed silver halide film having at least two color records, each color record having at least one silver halide emulsion comprising silver halide grains comprising at least 50 mol % silver chloride, said film exhibiting a photographic sensitivity of at least ISO 25, with a color developer having a pH of from about 9 to about 12, and comprising: a color developing agent at from about 0.01 to about 0.1 mol/l, and bromide ion at from about 0.003 to about 0.1 mol/l, said color developing being carried out for up to about 90 seconds at a temperature at or above about 35° C., B) scanning said developed film to form density representative digital signals for said at least two color records, and C) digitally manipulating said density representative digital signals formed in step B to correct either or both interimage interactions and gamma mismatches among said at least two color records so as to produce a digital record of said corrected color image.
Claim 2
Independent Claim
180 words
A method for providing a color display image comprising the steps of: A) color developing an imagewise exposed silver halide film having at least two color records, each color record having at least one silver halide emulsion comprising silver halide grains comprising at least 50 mol % silver chloride, said film exhibiting a photographic sensitivity of at least ISO 25, with a color developer having a pH of from about 9 to about 12, and comprising: a color developing agent at from about 0.01 to about 0.1 mol/l, and bromide ion at from about 0.003 to about 0.1 mol/l, said color developing being carried out for up to about 90 seconds at a temperature at or above about 35° C., B) scanning said developed film to form density representative digital signals for said at least two color records, and C) digitally manipulating said density representative digital signals formed in step B to correct either or both interimage interactions and gamma mismatches among said at least two color records so as to produce a digital record of said corrected color image.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said digital record is transmitted to an output device.
Claim 4
Dependent Claim
16 words
The method of claim 2 wherein said digital record is transmitted to an output display device.
Claim 5
Dependent Claim
18 words
The method of claim 1 wherein said developed film is at least partially fixed before scanning step B.
Claim 6
Dependent Claim
18 words
The method of claim 1 wherein said developed film is at least partially desilvered before scanning step B.
Claim 7
Dependent Claim
12 words
The method of claim 1 wherein said film has 3 color records.
Claim 8
Dependent Claim
18 words
The method of claim 1 wherein said color developer solution pH is from about 9.5 to about 11.
Claim 9
Dependent Claim
28 words
The method of claim 1 wherein said color developing agent is present in said color developer solution in an amount of from about 0.01 to about 0.07 mol/l.
Claim 10
Dependent Claim
27 words
The method of claim 1 wherein said bromide ion is present in said color developer solution in an amount of from about 0.004 to about 0.05 mol/1.
Claim 11
Dependent Claim
20 words
The method of claim 1 wherein said developing step is carried out for from about 5 to about 35 seconds.
Claim 12
Dependent Claim
20 words
The method of claim 1 wherein said developing step is carried out at from about 40° to about 65° C.
Claim 13
Dependent Claim
29 words
The method of claim 1 wherein said color developer solution further comprises a hydroxylamine or hydroxylamine derivative as an antioxidant in an amount of at least about 0,001 mol/l.
Claim 14
Dependent Claim
41 words
The method of claim 12 wherein said antioxidant is N-isopropyl-N-(2-ethanesulfonic acid)hydroxylamine, N,N-bis(propionic acid)hydroxylamine, N,N-bis(2-ethanesulfonic acid)hydroxylamine, N-isopropyl-N-(n-propylsulfonic acid)hydroxylamine, N-2-ethanephosphonic acid-N-(propionic acid)hydroxylamine, N,N-bis(2-ethanephosphonic acid)hydroxylamine, N-sec-butyl-N-(2-ethanesulfonic acid)hydroxylamine, N,N-bis(sec-butylcarboxylic acid)hydroxylamine, N-methyl-N-(p-carboxylbenzyl)hydroxylamine, N-isopropyl-N-(p-carboxylbenzyl)hydroxylamine, N,N-bis(p-carboxylbenzyl)hydroxylamine, N-methyl-N-(p-carboxyl-m-methylbenzyl)hydroxylamine, N-isopropyl-N-(p-sulfobenzyl)hydroxylamine, N-ethyl-N-(p-phosphonobenzyl)hydroxylamine, N-isopropyl-N-(2-carboxymethylene-3-propionic acid)hydroxylamine, N-isopropyl-N-(2-carboxyethyl)hydroxylamine, N-isopropyl-N-(2,3-dihydroxypropyl)hydroxylamine, and alkali metal salts thereof.
Claim 15
Dependent Claim
21 words
The method of claim 1 wherein said silver halide film comprises at least 70 mol % chloride based on total silver.
Claim 16
Dependent Claim
42 words
The method of claim 1 wherein said film comprises three color records, each color record comprising at least one silver chloride emulsion comprising at least 90 mol % chloride, and up to about 2 mol % iodide ion, based on total silver.
Claim 17
Dependent Claim
12 words
The method of claim 1 wherein said color developer comprises chloride ions.
Claim 18
Dependent Claim
37 words
The method of claim 1 wherein said digital record is used to provide a display material that is a color print, a color slide, a motion picture print, an advertising display print, or an advertising display transparency.
Claim 19
Dependent Claim
20 words
The method of claim 1 wherein said developing step is carried out at from about 40° to about 60° C.
Claim 20
Dependent Claim
41 words
The method of claim 18 wherein said film comprises three color records, each color record comprising at least one silver chloride emulsion layer comprising at least 90 mol % chloride and less than 1 mol % iodide, based on total silver.
Claim 21
Dependent Claim
34 words
The method of claim 1 wherein said at least one silver halide emulsion comprises tabular silver halide grains having an average aspect ratio of at least 2 and bounded by predominantly {100} major faces.
Claim 22
Dependent Claim
31 words
The method of claim 1 wherein said at least one silver halide emulsion comprises tabular grains having an average aspect ratio of at least 2 and bounded bypredominantly {111} major faces.
Claim 23
Dependent Claim
17 words
The method of claim 1 wherein said film comprises a support that is substantially transparent after processing.
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