US5948601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element with color enhancing layer adjacent the yellow dye forming layer
Assignee: Eastman Kodak Co
•
Filing: 1997-01-31
•
Granted: 1999-09-07
•
Expires: 2017-01-31
Abstract
Abstract The invention relates to a photographic element comprising an emulsion layer comprising a cyan dye forming coupler, an emulsion layer comprising a magenta dye forming coupler, an emulsion layer comprising a yellow dye forming coupler wherein said magenta coupler comprises ##STR1## wherein R a and R b independently represent H or a substituent; X is hydrogen or a coupling-off group; and Z a , Z b , and Z c are independently a substituted methine group, ═N--, ═C--, or --NH--, provided that one of either the Z a --Z b bond or the Z b --Z c bond is a double bond and the other is a single bond, and when the Z 4 --Z c bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Z a , Z b , and Z c represents a methine group connected to the group R b , and wherein between said yellow dye forming layer and said magenta dye forming layer, there is located at least one enhancer layer substantially free of silver halide comprising gelatin and said yellow dye forming coupler.
Inventors
- 👤 John B. Rieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:41
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029; G03C1/00; G03C1/005; G03C1/0051; G03C2001/0055; G03C1/035; G03C2001/03517; G03C5/00; G03C5/04; G03C2005/045; G03C2200/00; G03C2200/11; G03C2200/20; G03C2200/27; G03C2200/29; G03C2200/35; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30535; G03C7/32; G03C7/36; G03C7/38; G03C7/381; G03C7/382; G03C7/3825; G03C7/3835
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
256 words
A photographic element comprising an emulsion layer comprising a cyan dye forming coupler, an emulsion layer comprising a magenta dye forming coupler, an emulsion layer comprising a yellow dye forming coupler wherein said magenta coupler is selected from the group consisting of P-1 and P-2 ##STR12## wherein R a and R b independently represent H or a substituent; X is hydrogen or a coupling-off group; and Z a , Z b , and Z c are independently a substituted methine group, ═N--, ═C--, or --NH--, provided that one of either the Z a --Z b bond or the Z b --Z c bond is a double bond and the other is a single bond, and when the Z b --Z c bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Z a ; Z b , and Z c represents a methine group connected to the group R b , and wherein between said yellow dye forming layer and said magenta dye forming layer, there is located at least one color enhancer layer comprising gelatin and said yellow dye forming coupler said enhancer layer being substantially free of silver halide, wherein said yellow coupler in said color enhancer layer comprises less than 50% of the total yellow coupler in said element and wherein said element further comprises a gelatin containing anticolor-mixing layer free of yellow coupler and silver halide, between said magenta dye forming coupler containing layer and said color enhancer layer containing dye forming coupler.
Claim 2
Dependent Claim
256 words
A photographic element comprising an emulsion layer comprising a cyan dye forming coupler, an emulsion layer comprising a magenta dye forming coupler, an emulsion layer comprising a yellow dye forming coupler wherein said magenta coupler is selected from the group consisting of P-1 and P-2 ##STR12## wherein R a and R b independently represent H or a substituent; X is hydrogen or a coupling-off group; and Z a , Z b , and Z c are independently a substituted methine group, ═N--, ═C--, or --NH--, provided that one of either the Z a --Z b bond or the Z b --Z c bond is a double bond and the other is a single bond, and when the Z b --Z c bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Z a ; Z b , and Z c represents a methine group connected to the group R b , and wherein between said yellow dye forming layer and said magenta dye forming layer, there is located at least one color enhancer layer comprising gelatin and said yellow dye forming coupler said enhancer layer being substantially free of silver halide, wherein said yellow coupler in said color enhancer layer comprises less than 50% of the total yellow coupler in said element and wherein said element further comprises a gelatin containing anticolor-mixing layer free of yellow coupler and silver halide, between said magenta dye forming coupler containing layer and said color enhancer layer containing dye forming coupler.
Claim 3
Dependent Claim
27 words
The photographic element of claim 1 wherein said yellow coupler in said color enhancer layer comprises greater than 15% of the total yellow coupler in said element.
Claim 4
Dependent Claim
29 words
The photographic element of claim 1 wherein said yellow coupler in said color enhancer layer comprises between about 30 and 40% of the total yellow coupler in said element.
Claim 5
Dependent Claim
12 words
The photographic element of claim 1 wherein said magenta coupler comprises ##STR13##
Claim 6
Dependent Claim
27 words
The element of claim 1 wherein the molar ratio of blue light sensitive silver to total yellow coupler in said element is between about 3.0 and 6.0.
Claim 7
Dependent Claim
23 words
The element of claim 1 wherein said emulsion layer containing yellow dye forming coupler comprises between 0.3 to 0.5 g/m 2 of silver.
Claim 8
Dependent Claim
11 words
The element of claim 1 wherein X is not a hydrogen.
Claim 9
Dependent Claim
19 words
The element of claim 1 wherein the total silver in said element is greater than 0.7 g/m 2 .
Claim 10
Dependent Claim
14 words
The element of claim 1 wherein said anticolor-mixing layer comprises an oxidized developer scavenger.
Claim 11
Dependent Claim
24 words
The element of claim 9 wherein said developer scavenger comprises at least one material selected from the group consisting of hydroquinones, hydrazides, and sulfonamidophenols.
Claim 12
Dependent Claim
12 words
The element of claim 9 wherein said developer scavenger comprises 2,5-di-tert-octyl hydroquinone.
Claim 13
Dependent Claim
24 words
The element of claim 9 wherein the ratio of gelatin to other organic materials in said anticolor-mixing layer is between about 1.5 and 6.0.
Claim 14
Dependent Claim
24 words
The element of claim 12 wherein the ratio of gelatin to other organic materials in said anticolor-mixing layer is between about 2.5 and 5.0.
Claim 15
Dependent Claim
27 words
The photographic element of claim 1 wherein said emulsion layer containing yellow dye forming coupler comprises gelatin in an amount of at least 1.10 g/m 2 .
Claim 16
Dependent Claim
35 words
The photographic element of claim 1 wherein said emulsion layer comprising the yellow dye forming coupler comprises silver halide grains having an aspect ratio of greater than 2 and comprising greater than 95% silver chloride.
Claim 17
Independent Claim
280 words
A method of forming a photographic image comprising, providing a photographic element, said photographic element comprises an emulsion layer comprising a cyan dye forming coupler, an emulsion layer comprising a magenta dye forming coupler, an emulsion layer comprising a yellow dye forming coupler wherein said magenta coupler is selected from the group of P-1 and P-2wherein R a and R b independently represent H or a substituent; X is hydrogen or a coupling-off group; and Z a , Z b , and Z c are independently a substituted methine group, ═N--, ═C--, or --NH--, provided that one of either the Z a --Z b bond or the Z b --Z c bond is a double bond and the other is a single bond, and when the Z b --Z c bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Z a , Z b , and Z c represents a methine group connected to the group R b , and wherein between said yellow dye forming layer and said magenta dye forming layer, there is located at least one enhancer layer substantially free of silver halide comprising gelatin and said yellow dye forming coupler, said yellow coupler in said color enhancer layer comprises less than 50% of the total yellow coupler in said element and wherein said element further comprises a gelatin containing anticolor-mixing layer free of yellow coupler and silver halide, between said magenta dye forming coupler containing layer and said color enhancer layer containing dye forming coupler, exposing said element in an exposure time of less than 1 millisecond, and developing said element to obtain a photographic image.
Claim 18
Independent Claim
280 words
A method of forming a photographic image comprising, providing a photographic element, said photographic element comprises an emulsion layer comprising a cyan dye forming coupler, an emulsion layer comprising a magenta dye forming coupler, an emulsion layer comprising a yellow dye forming coupler wherein said magenta coupler is selected from the group of P-1 and P-2wherein R a and R b independently represent H or a substituent; X is hydrogen or a coupling-off group; and Z a , Z b , and Z c are independently a substituted methine group, ═N--, ═C--, or --NH--, provided that one of either the Z a --Z b bond or the Z b --Z c bond is a double bond and the other is a single bond, and when the Z b --Z c bond is a carbon-carbon double bond, it may form part of an aromatic ring, and at least one of Z a , Z b , and Z c represents a methine group connected to the group R b , and wherein between said yellow dye forming layer and said magenta dye forming layer, there is located at least one enhancer layer substantially free of silver halide comprising gelatin and said yellow dye forming coupler, said yellow coupler in said color enhancer layer comprises less than 50% of the total yellow coupler in said element and wherein said element further comprises a gelatin containing anticolor-mixing layer free of yellow coupler and silver halide, between said magenta dye forming coupler containing layer and said color enhancer layer containing dye forming coupler, exposing said element in an exposure time of less than 1 millisecond, and developing said element to obtain a photographic image.
Claim 19
Dependent Claim
21 words
The method of claim 16 forming a photographic image wherein said exposing said element is by a scanning digital exposure device.
Claim 20
Dependent Claim
17 words
A method of claim 17 wherein said exposure time is between 1×10 -5 and 1×10 -7 seconds.
Claim 21
Dependent Claim
25 words
The method of claim 17 wherein said exposure is by laser, light emitting diode, cathode ray tube, liquid crystal display, digital mirror, or light valve.
Claim 22
Dependent Claim
26 words
The method of claim 17 wherein said yellow coupler in said color enhancer layer comprises greater than 15% of the total yellow coupler in said element.
Claim 23
Dependent Claim
27 words
The method of claim 16 wherein said yellow coupler in said color enhancer layer comprises between 30 and 40% of the total yellow coupler in said element.
Claim 24
Dependent Claim
11 words
The method of claim 20 wherein said magenta coupler comprises ##STR14##
Claim 25
Dependent Claim
23 words
The method of claim 22 wherein the molar ratio of silver to total yellow coupler in said element is between 3.0 and 6.0.
Claim 26
Dependent Claim
23 words
The method of claim 23 wherein said emulsion layer containing yellow dye forming coupler comprises between 0.3 to 0.5 g/m 2 of silver.
Claim 27
Dependent Claim
14 words
The method of claim 16 wherein said anticolor-mixing layer comprises an oxidized developer scavenger.
Claim 28
Dependent Claim
24 words
The method of claim 25 wherein said developer scavenger comprises at least one material selected from the group consisting of hydroquinones, hydrazides, and sulfonamidophenols.
Claim 29
Dependent Claim
12 words
The method of claim 25 wherein said developer scavenger comprises 2,5-di-tert-octyl hydroquinone.
Claim 30
Dependent Claim
24 words
The method of claim 25 wherein the ratio of gelatin to other organic materials in said anticolor-mixing layer is between about 1.5 and 6.0.
Claim 31
Dependent Claim
12 words
The method of claim 16 wherein said yellow dye forming coupler comprises
Claim 32
Dependent Claim
13 words
The photographic element of claim 1 wherein said yellow dye forming coupler comprises
References Cited (Backward Citations)
DE285206C
Cited
US4040829A
Cited
US4186011A
Cited
JPS5365730A
Cited
US5176972A
Cited
US5576159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-09-06 | 2003-03-08 | 2003-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-06 | 2007-03-08 | 2007-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-06 | 2011-03-08 | 2011-09-07 | $7700.00 | Window Closed / Lapsed |