US5804356A
Expired / Lapsed
US
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Rapid processing of silver bromoiodide color negative films and digital image correction to provide display images having desired aim color and tone scale reproduction
Assignee: Eastman Kodak Co
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Filing: 1996-10-15
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Granted: 1998-09-08
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Expires: 2016-10-15
Abstract
Abstract Silver bromoiodide 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 among 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
- 👤 David Leroy Cole
- 👤 Anne Elizabeth Bohan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:38
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/48; G; G03; G03C; G03C7/00; G03C7/30; G03C7/3041; G03C7/407; G03C7/413; G03C1/00; G03C1/005; G03C1/035; G03C2001/03558; G03C2007/3043; G03C2200/00; G03C2200/19; G03C7/3022; G03C7/42; Y; Y10; Y10S; Y10S430/00; Y10S430/164
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
148 words
A method for providing a color display image comprising: A) developing an imagewise exposed color silver bromoiodide negative working film having at least two color records, with a color developer solution 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 0 to about 0.2 mol/l, said developing being carried out for up to about 90 seconds at a temperature at or above about 40° C., B) scanning said developed film to form density representative signals for said at least two color records, and C) digitally manipulating said density representative signals formed in step B to correct either or both interimage interactions and gamma mismatches among said at least two color records to produce a digital record providing a display image having desired aim color and tone scale reproduction.
Claim 2
Independent Claim
148 words
A method for providing a color display image comprising: A) developing an imagewise exposed color silver bromoiodide negative working film having at least two color records, with a color developer solution 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 0 to about 0.2 mol/l, said developing being carried out for up to about 90 seconds at a temperature at or above about 40° C., B) scanning said developed film to form density representative signals for said at least two color records, and C) digitally manipulating said density representative signals formed in step B to correct either or both interimage interactions and gamma mismatches among said at least two color records to produce a digital record providing a display image having desired aim color and tone scale reproduction.
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 0.1 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 0.01 to about 0.15 mol/l.
Claim 11
Dependent Claim
20 words
The method of claim 1 wherein said developing step is carried out for from about 30 to about 90 seconds.
Claim 12
Dependent Claim
20 words
The method of claim 10 wherein said developing step is carried out for from about 40 to about 90 seconds.
Claim 13
Dependent Claim
20 words
The method of claim 1 wherein said developing step is carried out at from about 45° to about 65° C.
Claim 14
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 15
Dependent Claim
41 words
The method of claim 13 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 16
Dependent Claim
25 words
The method of claim 1 wherein said silver bromoiodide emulsion comprises from about 0.5 to about 10 mol % iodide ion based on total silver.
Claim 17
Dependent Claim
37 words
The method of claim 1 wherein said film comprises three color records, each color record comprising at least one silver bromoiodide emulsion comprising from about 0.5 to about 6 mol % iodide ion based on total silver.
Claim 18
Dependent Claim
22 words
The method of claim 1 wherein said color developer comprises iodide ions in a concentration of at least about 5×10 -7 mol/l.
Claim 19
Dependent Claim
16 words
The method of claim 1 wherein said digital record is used to provide a color print.
Claim 20
Dependent Claim
20 words
The method of claim 1 wherein said developing step is carried out at from about 50° to about 65° C.
Claim 21
Dependent Claim
52 words
The method of claim 19 wherein said developing step is carried out at from about 55° to about 65° C. and said film comprises three color records, each color record comprising at least one silver bromoiodide emulsion layer comprising from about 0.5 to about 6 mol % iodide based on total silver.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-07 | 2002-03-09 | 2002-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-07 | 2006-03-09 | 2006-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-07 | 2010-03-09 | 2010-09-08 | $7700.00 | Window Closed / Lapsed |