US4456682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide color photographic material
Assignee: Fujifilm Holdings Corp
•
Filing: 1982-09-21
•
Granted: 1984-06-26
•
Expires: 2002-09-21
Abstract
Abstract A silver halide color photographic material is disclosed. The material has improved developing characteristics which are obtained by containing both a substantially light-insensitive silver halide and at least one specific 3-pyrazolidone compound. The substantially light-insensitive silver halide includes a halogen composition consisting of 0 to 100 percent of bromide, 0 to 2 percent of iodine and the residual percent of chlorine, a mean grain size of 0.01 to 0.3μ, and a coverage of 5 to 500 mg/m 2 . The 3-pyrazolidone compound has the following general formula (I): ##STR1## wherein X represents a hydrogen atom or an acetyl group; R represents an aryl group; and R 1 , R 2 , R 3 and R 4 each represents a hydrogen atom, an alkyl group or an aryl group, and they may be the same as or different from one another. The material can be developed at an increased speed and is not accompanied by undesirable photographic effects such as fogging.
Inventors
- 👤 Takatoshi Ishikawa
- 👤 Akio Mitsui
- 👤 Masakazu Morigaki
- 👤 Takashi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:20
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/3924; G03C7/39244; G03C7/39252
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
88 words
A silver halide color photographic material, comprising: a support base having thereon; a substantially light-insensitive silver halide emulsion in a hydrophilic collodial layer which does not contain any light-sensitive silver halide; a light-sensitive silver halide emulsion layer; a color coupler and a compound represented by the following general formula (I): ##STR4## wherein X is H or an acetyl group; R is an aryl group; and R 1 , R 2 , R 3 and R 4 independently represent a hydrogen atom, an alkyl group or an aryl group.
Claim 2
Dependent Claim
88 words
A silver halide color photographic material, comprising: a support base having thereon; a substantially light-insensitive silver halide emulsion in a hydrophilic collodial layer which does not contain any light-sensitive silver halide; a light-sensitive silver halide emulsion layer; a color coupler and a compound represented by the following general formula (I): ##STR4## wherein X is H or an acetyl group; R is an aryl group; and R 1 , R 2 , R 3 and R 4 independently represent a hydrogen atom, an alkyl group or an aryl group.
Claim 3
Dependent Claim
44 words
A silver halide color photographic material, as claimed in claim 1, wherein the light-insensitive silver halide emulsion is comprised of a substantially light-insensitive silver halide with a halogen composition comprising 98 to 100% bromine 0 to 2% iodine, and the residual percent of chlorine.
Claim 4
Dependent Claim
34 words
A silver halide color photographic material as claimed in claim 2, wherein the light-insensitive silver halide is contained in a emulsion in a form of grains having an average size of 0.01 to 0.3μ.
Claim 5
Dependent Claim
32 words
A silver halide color photographic material as claimed in claim 3, wherein the light-sensitive silver halide emulsion is present on the support in an amount of 5 to 500 mg/m 2 .
Claim 6
Dependent Claim
43 words
A silver halide color photographic material as claimed in claim 1, wherein the compound of general formula (I) is a compound wherein R 1 , R 2 , R 3 and R 4 each is an aryl group or a substituted alkyl group.
Claim 7
Dependent Claim
17 words
A silver halide color photographic material as claimed in claim 1, wherein X is a hydrogen atom.
Claim 8
Dependent Claim
17 words
A silver halide color photographic material as claimed in claim 1, wherein R is a phenyl group.
Claim 9
Dependent Claim
45 words
A silver halide color photographic material as claimed in claim 1, wherein R 1 and R 2 are phenyl groups and R 3 and R 4 are an alkyl group having 1 to 5 carbon atoms, said alkyl group being substituted with an acyloxy groups.
Claim 10
Dependent Claim
35 words
A silver halide color photographic material as claimed in claim 1, wherein the compound represented by the general formula (I) is present in an amount of 0.001 to 1 mol per mol of silver halide.
Claim 11
Dependent Claim
35 words
A silver halide color photographic material as claimed in claim 9, wherein the compound represented by the general formula (I) is present in an amount of 0.005 to 0.5 mol per mol of silver halide.
Claim 12
Dependent Claim
33 words
A silver halide color photographic material as claimed in claim 1, further comprising a subbing layer positioned on the support base, the subbing layer containing the compound represented by the general formula (I).
References Cited (Backward Citations)
US3620747A
Cited
US4229525A
Cited
US3902905A
Cited
US3892572A
Cited
US3989527A
Cited
US4129446A
Cited
US4388401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |