Patent FR1229009A successfully refreshed from Google Patents.
Patent US4705744A successfully refreshed from Google Patents.
US4705744A
Expired / Lapsed
US
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Color photographic materials having red color saturation and improved discrimination of green colors
Assignee: Fujifilm Holdings Corp
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Filing: 1985-07-05
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Granted: 1987-11-10
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Expires: 2005-07-05
Abstract
Abstract Silver halide color photographic materials comprising a support having thereon at least one blue-sensitive silver halide emulsion layer comprising a yellow dye-forming coupler, at least one green-sensitive silver halide emulsion layer comprising a magenta dye-forming coupler, and at least one red-sensitive silver halide emulsion layer comprising a cyan dye-forming coupler, characterized in that the wavelength weight-averaged between 500 nm and 600 nm (λ G ) of spectral sensitivity distribution of all green-sensitive layers is in the range of 520 nm to 580 nm, the wavelength weight-averaged between 500 nm and 600 nm (λ -R ) of spectral sensitivity distribution of one or more donor layers which exert an interlayer effect to at least one red-sensitive emulsion layer comprising a cyan dye-forming coupler is located in the range of 500 nm to 560 nm, and the difference of (λ G -λ -R ) is greater than 5 nm. The silver halide color photographic materials provide excellent saturation of red colors and improved discrimination of various green colors.
Inventors
- 👤 Noboru Sasaki
- 👤 Koji Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:01
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3041; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
218 words
A silver halide color photographic material comprising a support having thereon at least one blue-sensitive silver halide emulsion layer comprising a yellow dye-forming coupler, at least one green-sensitive silver halide emulsion layer comprising a magenta dye-forming coupler, and at least one red-sensitive silver halide emulsion layer comprising a cyan dye-forming coupler, characterized in that the wavelength (λ G ) weight-averaged between 500 nm and 600 nm of spectral sensitivity distribution of all green-sensitive layers is located in the range of 520 nm to 580 nm, the wavelength (λ -R ) weight-averaged between 500 nm and 600 nm of spectral sensitivity distribution of one or more donor layers which exert an interlayer effect to at least one red-sensitive emulsion layer comprising a cyan dye-forming coupler is located in the range of 500 nm to 560 nm, (λ G ) is greater than (λ -R ), and the difference of (λ G -λ -R ) is greater than 5 nm: wherein said weight-averaged wavelength (λ G ) is defined by the following equation: ##EQU4## wherein S G (λ) represents said spectral sensitivity distribution by equi-energy spectrum of all green-sensitive layers, and said weight-averaged wavelength (λ -R ) is defined by the following equation: ##EQU5## wherein S -R (λ) represents the spectral sensitivity distribution of said one or more donor layers.
Claim 2
Dependent Claim
218 words
A silver halide color photographic material comprising a support having thereon at least one blue-sensitive silver halide emulsion layer comprising a yellow dye-forming coupler, at least one green-sensitive silver halide emulsion layer comprising a magenta dye-forming coupler, and at least one red-sensitive silver halide emulsion layer comprising a cyan dye-forming coupler, characterized in that the wavelength (λ G ) weight-averaged between 500 nm and 600 nm of spectral sensitivity distribution of all green-sensitive layers is located in the range of 520 nm to 580 nm, the wavelength (λ -R ) weight-averaged between 500 nm and 600 nm of spectral sensitivity distribution of one or more donor layers which exert an interlayer effect to at least one red-sensitive emulsion layer comprising a cyan dye-forming coupler is located in the range of 500 nm to 560 nm, (λ G ) is greater than (λ -R ), and the difference of (λ G -λ -R ) is greater than 5 nm: wherein said weight-averaged wavelength (λ G ) is defined by the following equation: ##EQU4## wherein S G (λ) represents said spectral sensitivity distribution by equi-energy spectrum of all green-sensitive layers, and said weight-averaged wavelength (λ -R ) is defined by the following equation: ##EQU5## wherein S -R (λ) represents the spectral sensitivity distribution of said one or more donor layers.
Claim 3
Dependent Claim
22 words
A silver halide color photographic material as claimed in claim 1, wherein said blue-sensitive, green-sensitive and red-sensitive silver halide emulsions are negative-working.
Claim 4
Dependent Claim
24 words
A silver halide color photographic material as claimed in claim 1, wherein after color development processing only a negative color dye image is formed.
Claim 5
Dependent Claim
36 words
A silver halide color photographic material as claimed in claim 1, wherein said one or more donor layers comprise at least one DIR coupler which releases a development restrainer or a precursor thereof having high diffusibility.
Claim 6
Dependent Claim
26 words
A silver halide color photographic material as claimed in claim 4, wherein said development restrainer or the precursor thereof has a diffusibility of 0.4 or more.
Claim 7
Dependent Claim
26 words
A silver halide color photographic material as claimed in claim 4, wherein said development restrainer or the precursor thereof has a diffusibility of 0.6 or more.
Claim 8
Dependent Claim
92 words
A silver halide color photographic material as claimed in claim 4, wherein said one or more DIR couplers are selected from the compounds represented by the formula (I): J--Y)h (I) wherein J represent a coupler component, h is an integer of 1 or 2 and Y represents a coupling-off group which is linked to a coupling position of the coupler component J and can be eliminated from the coupler component upon the reaction with the oxidation products of a color developer to form a highly diffusible development restrainer or a precursor thereof.
Claim 9
Dependent Claim
139 words
A silver halide color photographic material as claimed in claim 7, wherein Y is a group represented by the formula (II), (III), (IV) or (V): ##STR11## wherein W represent --S-- or --N(R 18 )--, R 16 , R 17 , R 18 and R 19 each represents a group selected from a hydrogen atom, a bromine atom, an amino group, --R', --NHCOR', --NHSO 2 R', --OR', --CO 2 R' and --NHR' wherein R' represents an aliphatic hydrocarbon group (substituted or not) having 1 to 8 carbon atoms or a phenyl group (substituted or not), R 16 , R 17 , R 18 and R 19 each is a group selected so that the development restrainer released from the compound of the formula (I) has a diffusibility of 0.4 or more, and i represents an integer of 1 to 4.
Claim 10
Dependent Claim
48 words
A silver halide color photographic material as claimed in claim 8, wherein Y is a group represented by the formula (II): ##STR12## wherein R 16 is a group selected so that Y has a diffusibility of 0.4 or more, and i represents an integer of 1 to 4.
Claim 11
Dependent Claim
39 words
A silver halide color photographic material as claimed in claim 8, wherein Y is a group represented by the formula (IV): ##STR13## wherein R 17 is a group selected so that Y has a diffusibility of 0.4 or more.
Claim 12
Dependent Claim
35 words
A silver halide color photographic material as claimed in claim 10, wherein Y is a group represented by the formula (IV), wherein R 17 is a lower alkyl group having 1 to 4 carbon atoms.
Claim 13
Dependent Claim
73 words
A silver halide color photographic material as claimed in claim 1, wherein said one or more donor layers which exert an interlayer effect to at least one red-sensitive emulsion layer comprising a cyan dye forming-coupler comprise one or more uncolored coupler selected from a magenta dye-forming coupler or a yellow dye-forming coupler which yellow or magenta dyes are not capable of being washed out nor capable of being destroyed during the development processing.
Claim 14
Dependent Claim
24 words
A silver halide color photographic material as claimed in claim 1, wherein λ -R is in the range of 500 nm to 550 nm.
Claim 15
Dependent Claim
24 words
A silver halide color photographic material as claimed in claim 1, wherein the difference (λ G -λ -R ) is 10 nm or more.
Claim 16
Dependent Claim
29 words
A silver halide color photograhic material as claimed in claim 1, wherein the difference (λ G -λ -R ) is greater than 20 nm and smaller than 80 nm.
Claim 17
Dependent Claim
28 words
A silver halide color photographic material as claimed in claim 1, wherein said one or more donor layers are arranged between a yellow filter layer and said support.
Claim 18
Dependent Claim
30 words
A silver halide color photographic material as claimed in claim 1, wherein said one or more donor layers are arranged between a yellow filter layer and a high-speed red-sensitive layer.
Claim 19
Dependent Claim
50 words
A silver halide photographic material as claimed in claim 7, wherein said one or more DIR couplers are selected from compounds which release a development restraining moiety which is decomposed to a compound which does not substantially influence the photographic properties when the moiety diffuses into a color developing solution.
Claim 20
Dependent Claim
36 words
A silver halide color photographic material as claimed in claim 1, wherein an emulsion of said one or more donor layers is sensitized by a sensitizing dye having an absorption maximum of 500 to 550 nm.
Claim 21
Dependent Claim
36 words
A silver halide color photographic material as claimed in claim 1, wherein an emulsion of said one or more donor layers is sensitized by a sensitizing dye having an absorption maximum of 500 to 530 nm.
Claim 22
Dependent Claim
28 words
A silver halide color photographic material as claimed in claim 7, wherein J is a component of a coupler which produces a magenta dye or a yellow dye.
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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) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |