Patent US4680253A successfully refreshed from Google Patents.
US4680253A
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Color photographic material
Assignee: Fujifilm Holdings Corp
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Filing: 1986-02-25
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Granted: 1987-07-14
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Expires: 2006-02-25
Abstract
Abstract A silver halide color photographic material which comprises a support having coated thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer, characterized in that the gradation of each of the blue-, green- and red-sensitive layers satisfies the following relation: ##EQU1## wherein γ B (10 -4 ), γ G (10 -4 ) and γ R (10 -4 ) represent gradation of the blue-, green- and red- sensitive layers upon 1/10,000 second exposure, respectively and γ B (10 -2 ), γ G (10 -2 ) and γ R (10 -2 ) represent those upon 1/100 second exposure, respectively, which provides a color picture having good color and tone reproduction in both regular and flash photography.
Inventors
- 👤 Yoshihiko Shibahara
- 👤 Hideto Ikoma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:28
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3041
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A silver halide color photographic material which comprises a support having coated thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer, characterized in that the gradation of each of the blue-, green- and red-sensitive layers satisfies the following relation: ##EQU6## wherein γ B (10 -4 ), γ G (10 -4 ) and γ R (10 -4 ) represent gradation of the blue-, green- and red-sensitive layers upon 1/10,000 second exposure, respectively and γ B (10 -2 ), γ G (10 -2 ) and γ R (10 -2 ) represent those upon 1/100 second exposure, respectively.
Claim 2
Dependent Claim
112 words
A silver halide color photographic material which comprises a support having coated thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer, characterized in that the gradation of each of the blue-, green- and red-sensitive layers satisfies the following relation: ##EQU6## wherein γ B (10 -4 ), γ G (10 -4 ) and γ R (10 -4 ) represent gradation of the blue-, green- and red-sensitive layers upon 1/10,000 second exposure, respectively and γ B (10 -2 ), γ G (10 -2 ) and γ R (10 -2 ) represent those upon 1/100 second exposure, respectively.
Claim 3
Dependent Claim
37 words
The silver halide color photographic material as claimed in claim 1, wherein the ratio γ G (10 -4 )/γ G (10 -2 ) is less than the ratio γ R (10 -4 )/γ R (10 -2 ).
Claim 4
Dependent Claim
49 words
The silver halide color photographic material as claimed in claim 1, wherein the ratio of gradation of each of the blue-, green- and red-sensitive layers upon 1/10,000 second exposure to those upon 1/100 second exposure respectively satisfies the following relation: 0.85<γ.sub.B (10.sup.-4)/γ.sub.B (10.sup.-2)<0.96 0.87<γ.sub.G (10.sup.-4)/γ.sub.G (10.sup.-2)<0.98 0.89<γ.sub.R (10.sup.-4)/γ.sub.R.sup.( 10.sup.-2)<0.99
Claim 5
Dependent Claim
49 words
The silver halide color photographic material as claimed in claim 1, wherein the ratio of gradation of each of the blue-, green- and red-sensitive layers upon 1/10,000 second exposure to those upon 1/100 second exposure respectively satisfies the following relation: 0.87<γ.sub.B (10.sup.-4)/γ.sub.B (10.sup.-2)<0.92 0.89<γ.sub.G (10.sup.-4)/γ.sub.G (10.sup.-2)<0.94 0.91<γ.sub.R (10.sup.-4)/γ.sub.R (10.sup.-2)<0.96
Claim 6
Dependent Claim
40 words
The silver halide color photographic material as claimed in claim 1, wherein the ratio of gradation of each of the blue-, green- and red-sensitive layers upon 1/10,000 second exposure to those upon 1/100 second exposure satisfies the following relation: ##EQU7##
Claim 7
Dependent Claim
41 words
The silver halide color photographic material as claimed in claim 1, wherein the ratio of gradation of each of the blue-, green- and red-sensitive layers upon 1/10,000 second exposure to those upon 1/100 second exposure respectively satisfies the following relation: ##EQU8##
Claim 8
Dependent Claim
42 words
The silver halide color photographic material as claimed in claim 1, wherein the silver halide emulsion is of monodispose type wherein 95% or more of the total number or weight of silver halide grains fall within ±20% of the average grain size.
References Cited (Backward Citations)
US3672898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |