EP0107112A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Silver halide color photographic light-sensitive materials
Assignee: Fujifilm Holdings Corp
•
Filing: 1983-09-30
•
Granted: —
•
Expires: 2003-09-30
Abstract
Abstract A silver halide color photographic material is disclosed. The material is comprised of a support base having a red-sensitive, green-sensitive and blue-sensitive 3 silver halide emulsion layers positioned thereon. One of the silver halide emulsion layers is comprised of a plurality of silver halide emulsion layers which include a highest-sensitive layer containing a high reaction rate coupler and a low sensitive layer containing a relatively low reaction rate coupler having a reaction rate in a range of 1/1.3 to 1/15 of that of the high reaction rate coupler and a diffusible DIR compound. The material of the invention can be exposed and developed to form an image which simultaneously has improved granularity and sharpness.
Inventors
- 👤 Noboru Sasaki
- 👤 Seiji Ichijima
- 👤 Kozo Aoki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:47
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3003; G03C7/32; G03C7/3225; G03C7/3029; G03C2007/3034
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
93 words
A silver halide color photographic material, comprising: a support base having positioned thereon; a red-sensitive silver halide emulsion layer; a green-sensitive silver halide emulsion layer; and a blue-sensitive silver halide emulsion layer; wherein one of the emulsion layers is comprised of a plurality of silver halide emulsion layers comprising a highest-sensitive layer containing a high reaction rate coupler, and a low-sensitive layer containing a relatively low reaction rate coupler having a reaction rate in a range of 1/1.3 to 1/15 of that of the high reaction rate coupler and a diffusible DIR compound.
Claim 2
Dependent Claim
93 words
A silver halide color photographic material, comprising: a support base having positioned thereon; a red-sensitive silver halide emulsion layer; a green-sensitive silver halide emulsion layer; and a blue-sensitive silver halide emulsion layer; wherein one of the emulsion layers is comprised of a plurality of silver halide emulsion layers comprising a highest-sensitive layer containing a high reaction rate coupler, and a low-sensitive layer containing a relatively low reaction rate coupler having a reaction rate in a range of 1/1.3 to 1/15 of that of the high reaction rate coupler and a diffusible DIR compound.
Claim 3
Dependent Claim
34 words
A silver halide color photographic material as claimed in Claim 1, wherein the diffusible DIR compound is present in an amount of 0.001 to 0.3 mole per mole of the low reaction rate coupler.
Claim 4
Dependent Claim
37 words
A silver halide color photographic material is claimed in Claim 2, wherein the diffusible DIR compound is present in an amount in a range of 0.005 to 0.1 mole per mole of the low reaction rate coupler.
Claim 5
Dependent Claim
30 words
A silver halide color photographic material as claimed in Claim 1, wherein the high reaction rate coupler is present in an amount in a range of 0.001 to 0.5 g/m2.
Claim 6
Dependent Claim
32 words
A silver halide color photographic material as claimed in Claim 1, wherein the low reaction rate coupler is present in an amount in a range of 0.2 to 2 g/m 2 .
Claim 7
Dependent Claim
38 words
A silver halide color photographic material as claimed in Claim 1, wherein the diffusible DIR compound is present in an amount in a range of 0.0001 mole to 0.05 mole per mole of silver halide of low-sensitive. layer.
Claim 8
Dependent Claim
37 words
A silver halide color photographic material as claimed in Claim 6, wherein the diffusible DIR compound is present in an amount in a range of 0.0003 to 0.01 mole per mole of silver halide of low-sensitive layer.
Claim 9
Dependent Claim
34 words
A silver halide color photographic material as claimed in Claim 1, wherein the red-sensitive layer contains a cyan-forming coupler, the green-sensitive layer contains a magenta-forming coupler and the blue-sensitive layer contains a yellow-forming coupler.
Claim 10
Dependent Claim
25 words
A silver halide color photographic material as claimed in Claim 1, wherein the diffusible DIR compound releases a diffusible development inhibitor or a precursor thereof.
Claim 11
Dependent Claim
23 words
A silver halide color photographic material as claimed in Claim 9, wherein the diffusible development inhibitor has a diffusibility of 0.4 or more.
Claim 12
Dependent Claim
24 words
A silver halide color photographic material as claimed in Claim 10, wherein the diffusible development inhibitor has a diffusibility of not higher than 1.0.
Claim 13
Dependent Claim
35 words
A silver halide color photogrpahic material as claimed in Claim 1, wherein the ratio of reaction rate of the low reaction rate coupler to that of the high reaction rate coupler is 1/1.5 to 1/10.
Claim 14
Dependent Claim
91 words
A silver halide color photographic material as claimed in Claim 1, wherein the diffusible DIR compound is a DIR coupler represented by the general formula (I): wherein A represents a coupler component, m represents 1 or 2, and Y represents a group which is attached to the coupler component A at the coupling position thereof and can be eliminated from the coupler by reaction with an oxidation product of a color developing agent to produce a highly diffusible development inhibitor or a precursor capable of releasing a highly diffusible development inhibitor.
Claim 15
Dependent Claim
45 words
A silver halide color photographic material as claimed in Claim 1, wherein at least one of the red-sensitive, green-sensitive and blue-sensitive silver halide emulsion layers is a double layer type silver halide emulsion layer comprising a high-sensitive emulsion layer and a low sensitive emulsion layer.
Claim 16
Dependent Claim
48 words
A silver halide color photographic material as claimed in Claim 1, wherein at least one of the red-sensitive, green-sensitive and blue-sensitive silver halide emulsion layers is a triple layer type silver halide emulsion layer comprising a high-sensitive emulsion layer, an intermediate-sensitive emulsion layer and a low-sensitive emulsion layer.
Claim 17
Dependent Claim
27 words
A silver halide color photogrpahic material as claimed in Claim 5, wherein the intermediate-sensitive emulsion layer contains the low reaction rate coupler and the diffusible DIR compound.
Claim 18
Dependent Claim
26 words
A silver halide color photographic material as claimed in Claim 5, wherein the low-sensitive emulsion layer contains the low-reaction rate coupler and the diffusible DIR compound.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.