US5028515A
Expired / Lapsed
US
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Method for producing a color print comprising developing a specific material without benzyl alcohol
Assignee: Fujifilm Holdings Corp
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Filing: 1990-10-15
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Granted: 1991-07-02
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Expires: 2010-10-15
Abstract
Abstract In a color print containing cyan, magenta and yellow colored dyes, the color print where the spectral absorption peak wave lengths of the respective colored dyes lie in the range represented by the following formula: 1/2(λy+λc)≧λm≧1/2(λy+λc)-1 λc=Spectral absorption peak wave length (nm) of the colored cyan dye λm=Spectral absorption peak wave length (nm) of the colored magenta dye λy=Spectral absorption peak wave length (nm) of the colored yellow dye In the color print, improvement of the color reproduction and improvement of the observation light source dependency, which hitherto tend to conflict with each other, can be attained at the same time.
Inventors
- 👤 Kazunori Hasebe
- 👤 Koji Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:08
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3041; G03C7/32; G03C7/3225
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
426 words
A process for producing a color print which comprises a steps of imagewise exposing to light a silver halide photosensitive material and then subjecting the exposed silver halide material to color development with a color developer containing benzyl alcohol in an amount less than or equal to 5 ml/l, the silver halide photosensitive material containing a reflecting support having provided thereon a red sensitive silver chlorobromide emulsion layer containing silver bromide in an amount of 10 mol % or less and at least one of the couplers represented by the following general formula (I) and the couplers represented by the following general formula (II), a green sensitive silver chlorobromide emulsion layer containing silver bromide in an amount of 10 mol % or less and at least one of the couplers represented by the following general formula (III), and a blue sensitive silver chlorobromide emulsion layer containing silver bromide in an amount of 10 mol % or less at least one of the couplers represented by the following general formula (IV); these couplers respectively existing in droplets of a high boiling organic solvent and/or water insoluble high molecular compound each having a dielectric constant of 2 to 20° at 25° C. and a refractive index of 1.3 to 1.7 at 25° C., said couplers being dispersed in the respective emulsion layers, and the spectral absorption peak wave lengths of the respective colored dyes as formed by coupling reaction of the respective couplers with the oxidized form of a paraphenylenediamine developing agent lying in the range represented by the following formula (I): 1/2(λy+λc)≧1/2(λy+λc)-10 (I) wherein λc=Spectral absorption peak wave length (nm) of the colored cyan dye λm=Spectral absorption peak wave length (nm) of the colored magenta dye λy=Spectral absorption peak wave length (nm) of the colored yellow dye ##STR21## wherein R 1 , R 2 and R 4 independently represent substituted or unsubstituted aliphatic, aromatic or heterocyclic groups; R 3 , R 5 and R 6 independently represent hydrogen atoms, halogen atoms, substituted or unsubstituted, aliphatic, aromatic groups or acylamino groups, and R 3 may represent with R 2 a nonmetal atomic group which forms a nitrogen-containing 5- or 6-membered ring; R 7 represents a hydrogen atom or a substituent; R 8 represents a substituted or unsubstituted N-phenylcarbamoyl group; Z a and Z b independently represent methines, substituted methines, ═N═ or --NH--; n is 0 or 1; and Y 1 , Y 2 , Y 3 and Y 4 independently represent hydrogen atoms or groups eliminable at the coupling reaction with the oxidized form of the developing agent.
Claim 2
Dependent Claim
426 words
A process for producing a color print which comprises a steps of imagewise exposing to light a silver halide photosensitive material and then subjecting the exposed silver halide material to color development with a color developer containing benzyl alcohol in an amount less than or equal to 5 ml/l, the silver halide photosensitive material containing a reflecting support having provided thereon a red sensitive silver chlorobromide emulsion layer containing silver bromide in an amount of 10 mol % or less and at least one of the couplers represented by the following general formula (I) and the couplers represented by the following general formula (II), a green sensitive silver chlorobromide emulsion layer containing silver bromide in an amount of 10 mol % or less and at least one of the couplers represented by the following general formula (III), and a blue sensitive silver chlorobromide emulsion layer containing silver bromide in an amount of 10 mol % or less at least one of the couplers represented by the following general formula (IV); these couplers respectively existing in droplets of a high boiling organic solvent and/or water insoluble high molecular compound each having a dielectric constant of 2 to 20° at 25° C. and a refractive index of 1.3 to 1.7 at 25° C., said couplers being dispersed in the respective emulsion layers, and the spectral absorption peak wave lengths of the respective colored dyes as formed by coupling reaction of the respective couplers with the oxidized form of a paraphenylenediamine developing agent lying in the range represented by the following formula (I): 1/2(λy+λc)≧1/2(λy+λc)-10 (I) wherein λc=Spectral absorption peak wave length (nm) of the colored cyan dye λm=Spectral absorption peak wave length (nm) of the colored magenta dye λy=Spectral absorption peak wave length (nm) of the colored yellow dye ##STR21## wherein R 1 , R 2 and R 4 independently represent substituted or unsubstituted aliphatic, aromatic or heterocyclic groups; R 3 , R 5 and R 6 independently represent hydrogen atoms, halogen atoms, substituted or unsubstituted, aliphatic, aromatic groups or acylamino groups, and R 3 may represent with R 2 a nonmetal atomic group which forms a nitrogen-containing 5- or 6-membered ring; R 7 represents a hydrogen atom or a substituent; R 8 represents a substituted or unsubstituted N-phenylcarbamoyl group; Z a and Z b independently represent methines, substituted methines, ═N═ or --NH--; n is 0 or 1; and Y 1 , Y 2 , Y 3 and Y 4 independently represent hydrogen atoms or groups eliminable at the coupling reaction with the oxidized form of the developing agent.
Claim 3
Dependent Claim
49 words
A process of claim 1, wherein the couplers represented by the general formula (I) or (II), the general formula (III), and the general formula (IV) are respectively contained in the respective silver halide emulsion layers in an amount of 0.1 to 1.0 mole per 1 mole of silver halide.
Claim 4
Dependent Claim
47 words
A process of claim 1, wherein when the high boiling organic solvent and/or the water insoluble high molecular compound are dispersed in each silver halide emulsion layer, a low boiling organic solvent having a boiling point of 30° to 150° C. is used as an auxiliary solvent.
Claim 5
Dependent Claim
26 words
A process of claim 1, wherein at least one of the silver halide emulsions is monodispersed emulsion having a coefficient of variation of 0.15 or less.
Claim 6
Dependent Claim
26 words
A process of claim 4, wherein at least one of the silver halide emulsions is monodispersed emulsion having a coefficient of variation of 0.10 or less.
Claim 7
Dependent Claim
29 words
A process of claim 1, wherein silver halide grains contained in at least one of the silver halide emulsion layers are mainly regular crystals of cubic or tetradecahedral form.
Claim 8
Dependent Claim
19 words
A process of claim 1, wherein the color development is carried out in a color developer not containing benzylalcohol.
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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) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |