US4529690A
Expired / Lapsed
US
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Silver halide color photographic light-sensitive material
Assignee: Konica Minolta Inc
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Filing: 1984-08-23
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Granted: 1985-07-16
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Expires: 2004-08-23
Abstract
Abstract A color photographic element contains a compound of the following formula: ##STR1## wherein R 1 , R 2 , R 3 and R 4 each represent hydrogen atom, or an alkyl or aryl group; Ar 1 and Ar 2 each represent an aryl group; and n and m each represent 1 or 2. The color element containing the above compound displays excellent sensitivity, gradation, and color-developability even when developing it with a color developer not substantially containing any benzyl alcohol.
Inventors
- 👤 Keiji Ohbayashi
- 👤 Shinichi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:25
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39232; C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/164; G03C7/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
87 words
A silver halide color photographic light-sensitive material comprising a support having thereon photographic layers containing at least one silver halide emulsion layer, wherein at least one of said photographic layers containing at least one of the compounds having the Formula [I] below; ##STR4## wherein, R 1 , R 2 , R 3 and R 4 each represent hydrogen atom, or an alkyl or aryl group, Ar 1 and Ar 2 each represent an aryl group; and, n and m each have an integer of 1 or 2.
Claim 2
Dependent Claim
87 words
A silver halide color photographic light-sensitive material comprising a support having thereon photographic layers containing at least one silver halide emulsion layer, wherein at least one of said photographic layers containing at least one of the compounds having the Formula [I] below; ##STR4## wherein, R 1 , R 2 , R 3 and R 4 each represent hydrogen atom, or an alkyl or aryl group, Ar 1 and Ar 2 each represent an aryl group; and, n and m each have an integer of 1 or 2.
Claim 3
Dependent Claim
41 words
A silver halide color photographic light-sensitive material as claimed in claim 1, wherein the alkyl groups represented by R 1 , R 2 , R 3 and R 4 in the Formula [I] are those having one to six carbon atoms.
Claim 4
Dependent Claim
30 words
A silver halide color photographic light-sensitive material as claimed in claim 1, wherein the aryl groups represented by Ar 1 and Ar 2 in the Formula [I] are phenyl groups.
Claim 5
Dependent Claim
33 words
A silver halide color photographic light-sensitive material as claimed in claim 1, wherein R 1 , R 2 , R 3 and R 4 each represent hydrogen atom or an an alkyl group.
Claim 6
Dependent Claim
46 words
A silver halide color photographic light-sensitive material as claimed in claim 1, wherein the groups represented by R 1 , R 2 , R 3 and R 4 in the Formula [I] are one selected from a group of hydrogen atom, methyl group and butyl group.
Claim 7
Dependent Claim
35 words
A silver halide color photographic light-sensitive material as claimed in claim 4, wherein the groups represented by R 1 , R 2 , R 3 and R 4 in the Formula [I] are hydrogen atom.
Claim 8
Dependent Claim
32 words
A silver halide color photographic light-sensitive material as claimed in claim 1, wherein the compounds having the Formula [I] are contained in the silver halide emulsion layer of the photographic constituent layers.
Claim 9
Dependent Claim
41 words
A silver halide color photographic light-sensitive material as claimed in claim 1, wherein the compounds having the Formula [I] are contained in the silver halide emulsion layer containing couplers, in the proportion of 10 to 150 mol % to the couplers.
Claim 10
Dependent Claim
46 words
A silver halide color photographic light-sensitive material as claimed in claim 1, wherein the compounds having the Formula [I] are contained in the photographic constituent layers not containing any coupler, in the proportion of 0.05 to 0.5 g per sq. meter of the photographic constituent layers.
References Cited (Backward Citations)
US3043697A
Cited
US4004928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |