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US4145219A Expired / Lapsed US ⏱️ 0.0 years remaining

Multilayer color sensitive materials

Assignee: Fujifilm Holdings Corp
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Filing: 1977-07-07
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Granted: 1979-03-20
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Expires: 1997-07-07
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Abstract

Abstract A silver halide multilayer color sensitive material comprising a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer on a support, wherein each silver halide emulsion layer contains a non-diffusible image forming coupler, the improvement which comprises at least one of the silver halide emulsion layers comprising an upper unit silver halide emulsion layer, a middle unit silver halide emulsion layer and a lower unit silver halide emulsion layer, in which the sensitivity of the three unit silver halide emulsion layers decreases in order from the upper unit silver halide emulsion layer to the lower unit silver halide emulsion layer, and at least the middle unit silver halide emulsion layer contains a development inhibitor releasing compound.

Inventors

  • 👤 Takeshi Kato
  • 👤 Akira Tanaka
  • 👤 Jun Hayashi
  • 👤 Akikazu Mikawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 05:09
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3029; G03C2007/3034; G03C7/305; G03C7/30541

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 346 words
In a silver halide multilayer color light-sensitive material comprising a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer on a support, wherein each silver halide emulsion layer contains a non-diffusible image forming coupler, the improvement which comprises at least one of said silver halide emulsion layers comprising an upper unit silver halide emulsion layer, a middle unit silver halide emulsion layer and a lower unit silver halide emulsion layer, in which the sensitivity of the three unit silver halide emulsion layers decreases in order from the upper unit silver halide emulsion layer to the lower unit silver halide emulsion layer, wherein said upper unit silver halide emulsion layer comprises a layer of a high speed silver halide emulsion wherein more than about 3% based on the total grains in the upper unit silver halide emulsion comprises silver halide grains having a grain size of about 2.0μ or larger, and at least the middle unit silver halide emulsion layer contains at least one development inhibitor releasing compound selected from the compounds represented by the following general formulae (VII)-(X); ##STR18## wherein A 1 represents a yellow coupler residue, a magenta coupler residue, a cyan coupler residue, a malondiimide coupler residue, a malondiester coupler residue or an indanone coupling compound residue, and B 1 represents a bromine atom, an acylamino group, a benzothiazolinylideneamino group or an aralkyloxy group; ##STR19## wherein A 2 represents a cyan coupler residue, and B 2 represents a halogen atom, a nitro group, an alkoxy group, an alkyl group, an amino group or an acylamino group; ##STR20## wherein A 2 has the same meaning as in the general formula (VIII) and B 1 has the same meaning as in the general formula (VIII); and ##STR21## wherein B 2 has the same meaning as in the general formula (VIII) and A 3 represents a yellow coupler residue, a magenta coupler residue, a cyan coupler residue, a malondiimide coupler residue, a malondiester coupler residue, an indanone coupling compound residue or an α-(2-benzothia (or benzooxa)acetanilide) type coupler residue.
Claim 2
Dependent Claim 346 words
In a silver halide multilayer color light-sensitive material comprising a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer on a support, wherein each silver halide emulsion layer contains a non-diffusible image forming coupler, the improvement which comprises at least one of said silver halide emulsion layers comprising an upper unit silver halide emulsion layer, a middle unit silver halide emulsion layer and a lower unit silver halide emulsion layer, in which the sensitivity of the three unit silver halide emulsion layers decreases in order from the upper unit silver halide emulsion layer to the lower unit silver halide emulsion layer, wherein said upper unit silver halide emulsion layer comprises a layer of a high speed silver halide emulsion wherein more than about 3% based on the total grains in the upper unit silver halide emulsion comprises silver halide grains having a grain size of about 2.0μ or larger, and at least the middle unit silver halide emulsion layer contains at least one development inhibitor releasing compound selected from the compounds represented by the following general formulae (VII)-(X); ##STR18## wherein A 1 represents a yellow coupler residue, a magenta coupler residue, a cyan coupler residue, a malondiimide coupler residue, a malondiester coupler residue or an indanone coupling compound residue, and B 1 represents a bromine atom, an acylamino group, a benzothiazolinylideneamino group or an aralkyloxy group; ##STR19## wherein A 2 represents a cyan coupler residue, and B 2 represents a halogen atom, a nitro group, an alkoxy group, an alkyl group, an amino group or an acylamino group; ##STR20## wherein A 2 has the same meaning as in the general formula (VIII) and B 1 has the same meaning as in the general formula (VIII); and ##STR21## wherein B 2 has the same meaning as in the general formula (VIII) and A 3 represents a yellow coupler residue, a magenta coupler residue, a cyan coupler residue, a malondiimide coupler residue, a malondiester coupler residue, an indanone coupling compound residue or an α-(2-benzothia (or benzooxa)acetanilide) type coupler residue.
Claim 3
Dependent Claim 63 words
The multilayer color photographic light sensitive material of claim 1, wherein the grain size of the silver halide grains in said upper unit silver halide emulsion layer is preferably such that at least about 10% by weight, based on the total weight of the silver halide grains in the upper unit silver halide emulsion layer has a diameter of about 1.0μ or larger.
Claim 4
Dependent Claim 77 words
The multilayer color photographic light-sensitive material of claim 1, wherein the sensitivity difference between the upper unit silver halide emulsion layer, the middle unit silver halide emulsion layer and the lower unit silver halide emulsion layer is, respectively, about 0.15 log E to about 1.3 log E, about 0.1 log E to about 0.7 log E and about 0.3 log E to about 1.5 log E, wherein E is the amount of exposure in lux - seconds.
Claim 5
Dependent Claim 48 words
The multilayer color photographic light-sensitive material of claim 1, wherein the thickness of the upper unit silver halide emulsion layer, the thickness of the middle unit silver halide emulsion layer and the thickness of the lower unit silver halide emulsion layer is each about 0.5 to about 10μ.
Claim 6
Dependent Claim 55 words
The multilayer color photographic light-sensitive material of claim 1, wherein a coupler having a high coupling rate reactivity is incorporated in the upper unit silver halide emulsion layer having the highest sensitivity and a coupler having a low coupling rate reactivity is incorporated in the lower unit silver halide emulsion layer having the lowest sensitivity.
Claim 7
Dependent Claim 42 words
The multilayer color photographic light-sensitive material of claim 1, wherein the molar ratio of the silver halide in the upper unit silver halide emulsion layer to the coupler in the upper unit silver halide emulsion layer is about 20:1 to about 150:1.
Claim 8
Dependent Claim 54 words
The multilayer color photographic light-sensitive material of claim 1, wherein said DIR compound present in said middle unit silver halide emulsion layer is present in an amount of about 0.01 to about 40% on a molar basis to the total of the amount of the couplers in said middle unit silver halide emulsion layer.
Claim 9
Dependent Claim 53 words
The multilayer color photographic light-sensitive material of claim 1, wherein said red-sensitive silver halide emulsion layer, said green-sensitive silver halide emulsion layer and said blue-sensitive silver halide emulsion layer each comprises an upper unit silver halide emulsion layer, a middle unit silver halide emulsion layer and a lower unit silver halide emulsion layer.
Claim 10
Dependent Claim 56 words
The multilayer color light-sensitive material of claim 1, wherein said upper unit silver halide emulsion layer comprises a layer of a high speed silver halide emulsion wherein more than 5% based on the total grains in the upper unit emulsion layer to be composed of large grains having a grain size of about 2.0μ or larger.
Claim 11
Dependent Claim 59 words
The multilayer color light-sensitive material of claim 1, wherein the grain size of the silver halide grains in said upper unit silver halide emulsion layer is such that at least 20% by weight, based on the total weight of the silver halide grains in the upper unit silver halide emulsion layer has a diameter of about 1.0μ or larger.
Claim 12
Dependent Claim 59 words
The multilayer color light-sensitive material of claim 1, wherein the grain size of the silver halide grains in said upper unit silver halide emulsion layer is such that at least 40% by weight, based on the total weight of the silver halide grains in the upper unit silver halide emulsion layer has a diameter of about 1.0μ or larger.
Claim 13
Dependent Claim 33 words
The multilayer color light-sensitive material of claim 1, wherein the development inhibitor releasing compound is at least one of the compounds selected from the group consisting of D-1 - D-21 and D-24: ##STR22##

References Cited (Backward Citations)

US3663228A Cited
US3620746A Cited
US3930863A Cited
US3932185A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-03-19 1982-09-18 1983-03-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-03-19 1986-09-18 1987-03-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-03-19 1990-09-18 1991-03-20 $7700.00 Window Closed / Lapsed

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