US4745047A
Expired / Lapsed
US
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Color image-forming process
Assignee: Fujifilm Holdings Corp
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Filing: 1987-01-27
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Granted: 1988-05-17
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Expires: 2007-01-27
Abstract
Abstract A color image-forming process is disclosed, which comprises imagewise exposing a silver halide photographic material comprising a reflective support having provided thereon at least one light-sensitive silver halide emulsion layer constituted by at least two kinds of monodispersed silver halide grains containing substantially no silver iodide and substantially deffering from each other in mean grain size, and developing the exposed photographic material for a developing time of within 2 minutes and 30 seconds using a color developer containing substantially no benzyl alcohol.
Inventors
- 👤 Masahiro Asami
- 👤 Kazunori Hasebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:55
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/407; G03C7/413; G03C1/00; G03C1/005; G03C1/035; G03C2001/03564; G03C2001/0357
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
167 words
A color image-forming process which comprises imagewise exposing a silver halide photographic material comprising a reflective support having provided thereon at least one light-sensitive silver halide emulsion layer constituted by at least two kinds of monodispersed silver halide grains which are free of silver iodide and substantially differ from each other in mean grain size, and developing the exposed photographic material for a developing time of within 2 minutes and 30 seconds using a color developer containing substantially no benzyl alcohol, wherein the two kinds of monodispersed silver halide grains which are respectively the most and the second most by weight, among said at least two kinds of monodispersed silver halide grains, satisfy the conditions of 1.2≦(γ.sub.1 /γ.sub.2).sup.2 ≦4.0, wherein γ 1 represents the mean grain size of the larger kind of grains, and γ 2 represents the mean grain size of the smaller kinds of grains, and wherein the monodispersed silver halide grains form a latent image predominantly on the surface thereof upon exposure to light.
Claim 2
Dependent Claim
167 words
A color image-forming process which comprises imagewise exposing a silver halide photographic material comprising a reflective support having provided thereon at least one light-sensitive silver halide emulsion layer constituted by at least two kinds of monodispersed silver halide grains which are free of silver iodide and substantially differ from each other in mean grain size, and developing the exposed photographic material for a developing time of within 2 minutes and 30 seconds using a color developer containing substantially no benzyl alcohol, wherein the two kinds of monodispersed silver halide grains which are respectively the most and the second most by weight, among said at least two kinds of monodispersed silver halide grains, satisfy the conditions of 1.2≦(γ.sub.1 /γ.sub.2).sup.2 ≦4.0, wherein γ 1 represents the mean grain size of the larger kind of grains, and γ 2 represents the mean grain size of the smaller kinds of grains, and wherein the monodispersed silver halide grains form a latent image predominantly on the surface thereof upon exposure to light.
Claim 3
Dependent Claim
73 words
A color image-forming process as in claim 1, wherein two kinds of monodispersed silver halide grains which are respectively the most and the second most by weight, among said at least two kinds of monodispersed silver halide grains, satisfy the conditions of 1.4≦(γ.sub.1 /γ.sub.2).sup.2 ≦3.2, wherein γ 1 represents the mean grain size of the larger kind of grains, and γ 2 represents the mean grain size of the smaller kind of grains.
Claim 4
Dependent Claim
44 words
A color image-forming process as in claim 1, wherein each of the kinds of monodispersed silver halide grains has a statistical standard deviation (S) of the grain size distribution to the mean grain size (γ), a variation coefficient (S/γ), of not more than 0.2.
Claim 5
Dependent Claim
44 words
A color image-forming process as in claim 1, wherein each of the kinds of monodispersed silver halide grains has a statistical standard deviation (S) of the grain size distribution to the mean grain size (γ), a variation coefficient (S/γ), of not more than 0.15.
Claim 6
Dependent Claim
26 words
A color image-forming process as in claim 1, wherein γ 1 and γ 2 are each within the range of from 0.1 μm to 2.0 μm.
Claim 7
Dependent Claim
26 words
A color image-forming process as in claim 1, wherein γ 1 and γ 2 are each within the range of from 0.2 μm to 1.3 μm.
Claim 8
Dependent Claim
26 words
A color image-forming process as in claim 2, wherein γ 1 and γ 2 are each within the range of from 0.1 μm to 2.0 μm.
Claim 9
Dependent Claim
26 words
A color image-forming process as in claim 2, wherein γ 1 and γ 2 are each within the range of from 0.2 μm to 1.3 μm.
Claim 10
Dependent Claim
46 words
A color image-forming process as in claim 1, wherein the sum of the monodispersed emulsions having mean grain sizes of γ 1 and γ 2 , respectively, is 70% or more by weight based on the total silver halide emulsions contained in the light-sensitive emulsion layer.
Claim 11
Dependent Claim
46 words
A color image-forming process as in claim 1, wherein the sum of the monodispersed emulsions having mean grain sizes of γ 1 and γ 2 , respectively, is 80% or more by weight based on the total silver halide emulsions contained in the light-sensitive emulsion layer.
Claim 12
Dependent Claim
46 words
A color image-forming process as in claim 2, wherein the sum of the monodispersed emulsions having mean grain sizes of γ 1 and γ 2 , respectively, is 70% or more by weight based on the total silver halide emulsions contained in the light-sensitive emulsion layer.
Claim 13
Dependent Claim
46 words
A color image-forming process as in claim 2, wherein the sum of the monodispersed emulsions having mean grain sizes of γ 1 and γ 2 , respectively, is 80% or more by weight based on the total silver halide emulsions contained in the light-sensitive emulsion layer.
Claim 14
Dependent Claim
43 words
A color image-forming process as in claim 1, wherein the weight ratio of monodispersed emulsion having a mean grain size of γ 2 to monodispersed emulsion having a mean grain size of γ 1 is in the range of from 5/95 to 80/20.
Claim 15
Dependent Claim
43 words
A color image-forming process as in claim 1, wherein the weight ratio of monodispersed emulsion having a mean grain size of γ 2 to monodispersed emulsion having a mean grain size of γ 1 is in the range of from 10/90 to 70/30.
Claim 16
Dependent Claim
43 words
A color image-forming process as in claim 2, wherein the weight ratio of monodispersed emulsion having a mean grain size of γ 2 to monodispersed emulsion having a mean grain size of γ 1 is in the range of from 5/95 to 80/20.
Claim 17
Dependent Claim
43 words
A color image-forming process as in claim 2, wherein the weight ratio of monodispersed emulsion having a mean grain size of γ 2 to monodispersed emulsion having a mean grain size of γ 1 is in the range of from 10/90 to 70/30.
Claim 18
Dependent Claim
20 words
A color image-forming process as in claim 1, wherein the monodispersed silver halide grains comprise silver chloride or silver chlorobromide.
Claim 19
Dependent Claim
20 words
A color image-forming process as in claim 17, wherein silver chlorobromide contains from 20 to 98 mol% of silver bromide.
Claim 20
Dependent Claim
20 words
A color image-forming process as in claim 17, wherein silver chlorobromide contains from 50 to 98 mol% of silver bromide.
Claim 21
Dependent Claim
19 words
A color image-forming process as in claim 17, wherein silver chlorobromide contains 80 mol% or more of silver chloride.
Claim 22
Dependent Claim
35 words
A color image-forming process as in claim 17, wherein the monodispersed silver chlorobromide grains have a core/shell structure wherein the shell portion has a larger amount of silver chloride content than does the core portion.
Claim 23
Dependent Claim
28 words
A color image-forming process as in claim 1, wherein wherein at least two kinds of monodispersed silver halide emulsions are blended after adding thereto a spectrally sensitizing dye.
Claim 24
Dependent Claim
22 words
A color image-forming process as in claim 1, wherein the processing time is from 1 minute to 2 minutes and 10 seconds.
Claim 25
Dependent Claim
18 words
A color image-forming process as in claim 1, wherein the developing temperature is from 30° to 50° C.
Claim 26
Dependent Claim
18 words
A color image-forming process as in claim 24, wherein the developing temperature is from 35° to 45° C.
Claim 27
Dependent Claim
16 words
A color image-forming process as in claim 1, wherein the color developer contains 3-methyl-4-amino-N-ethyl-N-β-hydroxyethylaniline or 3-methyl-4-amino-N-ethyl-N-β-methanesulfonamidoethylaniline.
Claim 28
Dependent Claim
14 words
A color image-forming process as in claim 26, wherein the color developer contains 3-methyl-4-amino-N-ethyl-N-β-methanesulfonamidoethylaniline.
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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) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |