US5213953A
Expired / Lapsed
US
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Color image forming process
Assignee: Fujifilm Holdings Corp
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Filing: 1991-07-09
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Granted: 1993-05-25
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Expires: 2011-07-09
Abstract
Abstract A color image forming process is disclosed. The process comprises color developing an imagewise exposed silver halide color photographic material with a developer containing an aromatic primary amine color developing agent, after successive steps of desilvering, washing and/or stabilizing, and drying, wherein said color photographic material has at least one silver halide emulsion layer containing silver halide grains containing substantially no silver iodide and containing at least 95 mol % silver chloride based on the total silver halide content, said silver halide grains further containing from 1×10 -6 to 1×10 -3 mol of an iron compound per mol of silver and said iron compound being distributed at an iron ion concentration in the surface phase of the grain of at least 5 times that in the inside phase of the grain, wherein the total gelatin weight of said color photographic material is 7 g or less per m 2 of photographic material, and wherein in the color development step, the color photographic material is processed for a time of from 5 seconds to 30 seconds while striking the surface of light-sensitive layer of said color photographic material with jet streams of a color development processing solution. The process can stably produce excellent color images having less image unevenness even in photographic processing of a very short processing time.
Inventors
- 👤 Soichiro Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:25
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C7/00; G03C7/30; G03C7/3022; G03C7/407
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
204 words
A color image forming process comprising the step of color developing an imagewise exposed silver halide color photographic material with a developer containing an aromatic primary amine color developing agent, followed by successive steps of desilvering, washing and/or stabilizing, and drying, wherein said color photographic material has at least one silver halide emulsion layer containing silver halide grains containing substantially no silver iodide and containing at least 95 mol % silver chloride based on the total silver halide content, said silver halide grains having a surface phase and an inside phase and further containing from 1×10 -6 to 1×10 -3 mol of an iron compound per mol of silver and said iron compound being distributed at an iron ion concentration in the surface phase of the grain of at least 5 times that in the inside phase of the grain, wherein the total gelatin weight of said color photographic material is 7 g or less per m 2 of photographic material, and wherein in the color developing step, the color photographic material is processed for a time of from 5 seconds to 30 seconds while striking the surface of a light-sensitive layer of said color photographic material with jet streams of a color developer.
Claim 2
Dependent Claim
204 words
A color image forming process comprising the step of color developing an imagewise exposed silver halide color photographic material with a developer containing an aromatic primary amine color developing agent, followed by successive steps of desilvering, washing and/or stabilizing, and drying, wherein said color photographic material has at least one silver halide emulsion layer containing silver halide grains containing substantially no silver iodide and containing at least 95 mol % silver chloride based on the total silver halide content, said silver halide grains having a surface phase and an inside phase and further containing from 1×10 -6 to 1×10 -3 mol of an iron compound per mol of silver and said iron compound being distributed at an iron ion concentration in the surface phase of the grain of at least 5 times that in the inside phase of the grain, wherein the total gelatin weight of said color photographic material is 7 g or less per m 2 of photographic material, and wherein in the color developing step, the color photographic material is processed for a time of from 5 seconds to 30 seconds while striking the surface of a light-sensitive layer of said color photographic material with jet streams of a color developer.
Claim 3
Dependent Claim
54 words
The color image forming process of claim 1, wherein the surface phase of the silver halide grains of the silver halide emulsion is not more than 30% by volume of the whole grains and the iron compound concentration in the surface phase is from 1×10 -5 to 1×10 -2 mol per mol of silver.
Claim 4
Dependent Claim
38 words
The color image forming process of claim 1, wherein the silver halide grains of the silver halide emulsion have on the surface thereof silver bromide-containing localized phases having a silver bromide content of at least 20 mol %.
Claim 5
Dependent Claim
37 words
The color image forming process of claim 1, wherein the silver halide grains of the silver halide emulsion contain an iridium ion in an amount of from 1×10 -8 to 1×10 -5 mol per mol of silver.
Claim 6
Dependent Claim
85 words
The color image forming process of claim 1, wherein the surface phase of the silver halide grains of the silver halide emulsion is not more than 30% by volume of the whole grains and the iron compound concentration in the surface phase is from 1×10 -5 to 1×10 -2 mol per mol of silver, and wherein the silver halide grains of the silver halide emulsion have on the surface thereof silver bromide-containing localized phases having a silver bromide content of at least 20 mol %.
Claim 7
Dependent Claim
84 words
The color image forming process of claim 1, wherein the surface phase of the silver halide grains of the silver halide emulsion is not more than 30% by volume of the whole grains and the iron compound concentration in the surface phase is from 1×10 -5 to 1×10 -2 mol per mol of silver, and wherein the silver halide grains of the silver halide emulsion contain an iridium ion in an amount of from 1×10 -8 to 1×10 -5 mol per mol of silver.
Claim 8
Dependent Claim
68 words
The color image forming process of claim 1, wherein the silver halide grains of the silver halide emulsion have on the surface thereof silver bromide-containing localized phases having a silver bromide content of at least 20 mol %, and wherein the silver halide grains of the silver halide emulsion contain an iridium ion in an amount of from 1×10 -8 to 1×10 -5 mol per mol of silver.
Claim 9
Dependent Claim
114 words
The color image forming process of claim 1, wherein the surface phase of the silver halide grains of the silver halide emulsion is not more than 30% by volume of the whole grains and the iron compound concentration in the surface phase is from 1×10 -5 to 1×10 -2 mol per mol of silver, wherein the silver halide grains of the silver halide emulsion have on the surface thereof silver bromide-containing localized phases having a silver bromide content of at least 20 mol %, and wherein the silver halide grains of the silver halide emulsion contain an iridium ion in an amount of from 1×10 -8 to 1×10 -5 mol per mol of silver.
Claim 10
Dependent Claim
24 words
The color image forming process of claim 1, wherein the silver halide grains contain no silver iodide, based on the total silver halide content.
Claim 11
Dependent Claim
28 words
The color image forming process of claim 1, wherein the silver halide grains contain at least 98 mol % silver chloride, based on the total silver halide content.
Claim 12
Dependent Claim
34 words
The color image forming process of claim 1, wherein the iron compound is a member selected from the group consisting of hexacyano iron(II) acid salts, hexacyano iron(III) acid salts, ferrous thiocyanates, and ferric thiocyanates.
Claim 13
Dependent Claim
32 words
The color image forming process of claim 1, wherein the content of said iron compound is from 1×10 -5 to 5×10 -4 mol per mol of silver of the silver halide grains.
Claim 14
Dependent Claim
37 words
The color image forming process of claim 1, wherein the silver halide grains of the silver halide emulsion contain an iridium ion in an amount of from 5×10 -8 to 5×10 -6 mol per mol of silver.
Claim 15
Dependent Claim
19 words
The color image forming process of claim 1, wherein the color development time is from 5 to 20 seconds.
Claim 16
Dependent Claim
32 words
The color image forming process of claim 1, wherein the rate of the jet stream striking the light-sensitive emulsion layer is in the range of from 0.3 to 3 meters per minute.
Claim 17
Dependent Claim
39 words
The color image forming process of claim 1, wherein the streaming amount of the color development processing solution at the jet stream is at least 0.5 liter per minute for the photographic material having a width of 30 cm.
Claim 18
Dependent Claim
29 words
The color image forming process of claim 1, wherein the total gelatin weight of said color photographic material is 2 to 7 g per m 2 of photographic material.
Claim 19
Dependent Claim
35 words
The color image forming process of claim 1, wherein the surface phase of the silver halide grains has an iron concentration at least ten times that of the inside phase of the silver halide grains.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-24 | 1996-11-23 | 1997-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-24 | 2000-11-23 | 2001-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-24 | 2004-11-23 | 2005-05-25 | $7700.00 | Window Closed / Lapsed |