Patent US4640890A successfully refreshed from Google Patents.
US4640890A
Expired / Lapsed
US
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Color photographic material with light insensitive silver chloride
Assignee: Fujifilm Holdings Corp
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Filing: 1985-07-31
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Granted: 1987-02-03
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Expires: 2005-07-31
Abstract
Abstract A silver halide color photographic material is described comprising a support having thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, with at least one of said light-sensitive silver halide emulsion layers containing a mono-dispersed silver halide emulsion, said color photogrphic material further comprising at least one auxiliary layer containing silver halide grains having substantially light-insensitivity and containing more than 75 mole % silver chloride. The silver halide color photographic material is improved in dependence of photographic characteristics with respect to the extent of stirring of a processing solution during development processing.
Inventors
- 👤 Munehisa Fujita
- 👤 Akio Mitsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:20
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3022; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
110 words
A silver halide color photographic material comprising a support having thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, with at least one of said light-sensitive silver halide emulsion layers containing a mono-dispersed silver halide emulsion, said color photographic material further comprising at least one auxiliary layer containing silver halide grains having substantially light-insensitivity and containing more than 75 mole% silver chloride, wherein said auxiliary layer is formed on the outside of the light-sensitive silver halide emulsion layer disposed outermost of the light-sensitive silver halide emulsion layers with respect to the support thereof.
Claim 2
Dependent Claim
110 words
A silver halide color photographic material comprising a support having thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, with at least one of said light-sensitive silver halide emulsion layers containing a mono-dispersed silver halide emulsion, said color photographic material further comprising at least one auxiliary layer containing silver halide grains having substantially light-insensitivity and containing more than 75 mole% silver chloride, wherein said auxiliary layer is formed on the outside of the light-sensitive silver halide emulsion layer disposed outermost of the light-sensitive silver halide emulsion layers with respect to the support thereof.
Claim 3
Dependent Claim
25 words
A silver halide color photographic material as in claim 1, wherein the mono-dispersed silver halide emulsion has a coefficient of variation of 0.20 or less.
Claim 4
Dependent Claim
25 words
A silver halide color photographic material as in claim 1, wherein the mono-dispersed silver halide emulsion has a coefficient of variation of 0.15 or less.
Claim 5
Dependent Claim
25 words
A silver halide color photographic material as in claim 1, wherein the mono-dispersed silver halide emulsion is used in an emulsion layer having lower sensitivity.
Claim 6
Dependent Claim
21 words
A silver halide color photographic material as in claim 1, wherein the light-sensitive silver halide is a negative type silver halide.
Claim 7
Dependent Claim
58 words
A silver halide color photographic material as in claim 1, wherein the silver halide grains having substantially light-insensitivity and containing at least 75 mole% silver chloride are prepared in the presence of a water-soluble rhodium salt present in an amount of more than 1×10 -6 mole per mole of silver at any time before finishing a first ripening.
Claim 8
Dependent Claim
40 words
A silver halide color photographic material as in claim 1, wherein the mono-dispersed light-sensitive silver halide emulsion is prepared in the presence of at least one tetra-substituted thiourea or organic thioether compound at any time before finishing a first ripening.
Claim 9
Dependent Claim
25 words
A silver halide color photographic material as in claim 1, wherein the silver halide grains having substantially light-insensitivity contain at least 90 mole% silver chloride.
Claim 10
Dependent Claim
45 words
A silver halide color photographic material as in claim 8, wherein said silver halide grains are prepared in the presence of water-soluble rhodium salt present in an amount of more than 1×10 -6 per mole of silver at any time before finishing a first ripening.
Claim 11
Dependent Claim
31 words
A silver halide color photographic material as in claim 6, wherein the rhodium salt is present in an amount of from 5×10 -5 to 1×10 -3 mole per mole of silver.
Claim 12
Dependent Claim
58 words
A silver halide color photographic material as in claim 1, wherein the silver halide grains having substantially light-insensitivity are present in the auxiliary layer in an amount of from 1×10 -6 mole/m 2 to 1×10 -2 mole/m 2 , and the coating amount of silver in the auxiliary layer is from 0.2% by weight to 20% by weight.
Claim 13
Dependent Claim
58 words
A silver halide color photographic material as in claim 8, wherein the silver halide grains having substantially light-insensitivity are present in the auxiliary layer in an amount of from 1×10 -6 mole/m 2 to 1×10 -2 mole/m 2 , and the coating amount of silver in the auxiliary layer is from 0.2% by weight to 20% by weight.
Claim 14
Dependent Claim
23 words
A silver halide color photographic material as in claim 5, wherein the light-sensitive silver halide is used for a color reversal photographic material.
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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) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |