US6159674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element for color imaging
Assignee: Eastman Kodak Co
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Filing: 1999-12-28
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Granted: 2000-12-12
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Expires: 2019-12-28
Abstract
Abstract Disclosed is a color photographic element comprising at least four imaging layers including: a first light sensitive silver halide imaging layer having associated therewith a cyan image dye-forming coupler; a second light sensitive silver halide imaging layer having associated therewith a magenta image dye-forming coupler; a third light sensitive silver halide imaging layer having associated therewith a yellow image dye-forming coupler; and a fourth light sensitive silver halide imaging layer having associated therewith a fourth image dye-forming coupler for which the normalized spectral transmission density distribution curve of the dye formed by the fourth image dye-forming coupler upon reaction with color developer has a CIELAB hue angle, h ab , of from not less than 355° to not more than 75°. The element provides improved color gamut.
Inventors
- 👤 James L. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:58
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/09; G03C1/035; G03C2001/03517; G03C2001/03594; G03C2001/091; G03C2001/093; G03C2001/096; G03C7/3022; G03C7/3041
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
119 words
A color photographic element comprising at least four imaging layers including: a first light sensitive silver halide imaging layer having associated therewith a cyan image dye-forming coupler; a second light sensitive silver halide imaging layer having associated therewith a magenta image dye-forming coupler; a third light sensitive silver halide imaging layer having associated therewith a yellow image dye-forming coupler; and a fourth light sensitive silver halide imaging layer having associated therewith a fourth image dye-forming coupler for which the normalized spectral transmission density distribution curve of the dye formed by the fourth image dye-forming coupler upon reaction with color developer has a CIELAB hue angle, h ab , of from not less than 355° to not more than 75°.
Claim 2
Dependent Claim
119 words
A color photographic element comprising at least four imaging layers including: a first light sensitive silver halide imaging layer having associated therewith a cyan image dye-forming coupler; a second light sensitive silver halide imaging layer having associated therewith a magenta image dye-forming coupler; a third light sensitive silver halide imaging layer having associated therewith a yellow image dye-forming coupler; and a fourth light sensitive silver halide imaging layer having associated therewith a fourth image dye-forming coupler for which the normalized spectral transmission density distribution curve of the dye formed by the fourth image dye-forming coupler upon reaction with color developer has a CIELAB hue angle, h ab , of from not less than 355° to not more than 75°.
Claim 3
Dependent Claim
30 words
The element of claim 1 wherein the hue angle of the dye formed by the fourth image dye-forming coupler is from not less than 5 to not more than 75°.
Claim 4
Dependent Claim
29 words
The element of claim 1 wherein the hue angle of the dye formed by the fourth image dye-forming coupler is from not less than 15 to not more 75°.
Claim 5
Dependent Claim
24 words
The element of claim 1 wherein the fourth light sensitive silver halide emulsion layer is located below all of the other light sensitive layers.
Claim 6
Dependent Claim
21 words
The element of claim 1 wherein the fourth light sensitive layer is located above all of the other light sensitive layers.
Claim 7
Dependent Claim
30 words
The element of claim 1 wherein the fourth light sensitive layer is located above one of the other light sensitive layers and below another of the other light sensitive layers.
Claim 8
Dependent Claim
24 words
The element of claim 1 wherein there is a non-light sensitive layer between the fourth light sensitive layer and any adjacent light sensitive layer.
Claim 9
Dependent Claim
36 words
The element of claim 1 wherein the fourth light sensitive layer has a maximum spectral sensitivity that is at least 30 nm away from the maximum light sensitivity of any of the other light sensitive layers.
Claim 10
Dependent Claim
37 words
The element of claim 8 wherein the the fourth light sensitive layer has a maximum spectral sensitivity that is at least 40 nm away from the maximum spectral sensitivity of any of the other light sensitive layers.
Claim 11
Dependent Claim
22 words
The element of claim 1 wherein the fourth light sensitive layer has a maximum spectral sensitivity that is greater than 700 nm.
Claim 12
Dependent Claim
22 words
The element of claim 1 wherein the fourth light sensitive layer has a maximum spectal sensitivity that is greater than 720 nm.
Claim 13
Dependent Claim
22 words
The element of claim 1 wherein the fourth light sensitive layer has a maximum spectal sensitivity of from 590 to 640 nm.
Claim 14
Dependent Claim
22 words
The element of claim 1 wherein the fourth light sensitive layer has a maximum spectral sensitivity of from 400 to 460 nm.
Claim 15
Dependent Claim
17 words
The element of claim 1 wherein the fourth dye-forming coupler is a carbonamidophenyl or an azole-based coupler.
Claim 16
Dependent Claim
12 words
The element of claim 14 wherein the coupler is a triazolo-based coupler.
Claim 17
Dependent Claim
14 words
The element of claim 14 wherein the fourth dye-forming coupler is a pyrazolone-based coupler.
Claim 18
Dependent Claim
14 words
The element of claim 15 wherein the fourth dye-forming coupler is a pyrazolotriazole coupler.
Claim 19
Dependent Claim
10 words
The element of claim 1 additionally comprising a reflective support.
Claim 20
Dependent Claim
10 words
The element of claim 1 additionally comprising a transparent support.
Claim 21
Dependent Claim
17 words
The element of claim 1 packaged with instructions to process using a color negative print developing process.
Claim 22
Dependent Claim
12 words
The element of claim 1 wherein the element is a direct-view element.
Claim 23
Dependent Claim
31 words
A process for forming an image in an element as described in claim 1 after the element has been imagewise exposed to light comprising contacting the element with a color-developing compound.
Claim 24
Dependent Claim
14 words
The process of claim 22 in which the developer is a p-phenylene diamine compound.
Claim 25
Dependent Claim
28 words
The element of claim 1 wherein the emulsions in the element are comprised of 3-dimensional silver chloride emulsions, which are predominantly greater than 95 M % silver chloride.
Claim 26
Dependent Claim
11 words
The element of claim 1 wherein the emulsions are predominantly monodisperse.
Claim 27
Dependent Claim
23 words
The element of claim 1 wherein the grain sizes of the emulsions are between 0.05 u and 0.95 u in cubic edge length.
Claim 28
Dependent Claim
17 words
The element of claim 1 wherein at least one of the emulsions of the element contain iridium.
Claim 29
Dependent Claim
13 words
The element of claim 1 wherein the emulsions are sulfur and gold sensitized.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-12 | 2004-06-12 | 2004-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-12 | 2008-06-12 | 2008-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-12 | 2012-06-12 | 2012-12-12 | $7700.00 | Window Closed / Lapsed |