US4792518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide color reversal reflection print sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1988-04-22
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Granted: 1988-12-20
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Expires: 2008-04-22
Abstract
Abstract A silver halide color reversal reflection print photosensitive material comprises at least one blue-sensitive layer, at least one green-sensitive layer and at least one red-sensitive layer on a support. In the characteristic curves of the color sensitive layers, a fluctuation width of point-gammas and absolute values of point-gammas are defined. The distribution of the grain size of the silver halide grains in silver halide emulsions contained in the color sensitive layer can be controlled by forming the grains in the presence of a silver halide solvent.
Inventors
- 👤 Shigeru Kuwashima
- 👤 Akio Mitsui
- 👤 Masaru Sano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:16
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/015; G03C7/00; G03C7/30; G03C7/3041; G03C1/035; G03C2001/0357; G03C2200/00; G03C2200/06; G03C5/00; G03C5/26; G03C5/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
146 words
A silver halide color reversal reflection print photosensitive material having at least one blue-sensitive layer, at least one green-sensitive layer and at least one red-sensitive layer on a support, wherein in all the characteristic curves of said color sensitive layers, the fluctuation width of the point-gammas at each of points within the exposure range corresponding to a developed color density of from 1.8 to 0.8 is within ±15% of the average value of the point-gammas in said exposure range, and the absolute value of the point-gamma at each of points within the exposure range corresponding to a developed color density of from 0.3 to 0.2 is 0.3 or more, at least one of the color-sensitive layers comprising two or more silver halide emulsion layers having different sensitivities with respect to each other, in which the emulsion layer having the lowest sensitivity is a monodispersed emulsion layer.
Claim 2
Dependent Claim
146 words
A silver halide color reversal reflection print photosensitive material having at least one blue-sensitive layer, at least one green-sensitive layer and at least one red-sensitive layer on a support, wherein in all the characteristic curves of said color sensitive layers, the fluctuation width of the point-gammas at each of points within the exposure range corresponding to a developed color density of from 1.8 to 0.8 is within ±15% of the average value of the point-gammas in said exposure range, and the absolute value of the point-gamma at each of points within the exposure range corresponding to a developed color density of from 0.3 to 0.2 is 0.3 or more, at least one of the color-sensitive layers comprising two or more silver halide emulsion layers having different sensitivities with respect to each other, in which the emulsion layer having the lowest sensitivity is a monodispersed emulsion layer.
Claim 3
Dependent Claim
47 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 1, wherein the monodispersed emulsion in the monodispersed emulsion layer is an emulsion in which the grain size of 95% or more of the silver halide grains falls within the average grain size ±30%.
Claim 4
Dependent Claim
63 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 2, characterized in that said lowest sensitive silver halide emulsion is a silver halide emulsion prepared by a controlled double jet method in which a soluble silver salt and a soluble halide are reacted with keeping the pAg in the liquid phase in which a silver halide is formed constant.
Claim 5
Dependent Claim
37 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 2, characterized in that said lowest sensitive silver halide emulsion is a silver halide emulsion prepared using a silver halide solvent during grain formation.
Claim 6
Dependent Claim
36 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 4, characterized in that said silver halide solvent is ammonia, a thiocyanate salt, a thioether compound, a thione compound or an amine compound.
Claim 7
Dependent Claim
132 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 4, characterized in that said silver halide solvent is a tetra-substituted thiourea silver halide solvent having the following general formula (I): ##STR10## wherein W 1 , W 2 , W 3 and W 4 may be the same or different and each represents a substituted or unsubstituted alkyl group, an alkenyl group or a substituted or unsubstituted aryl group, and the sum of the carbon atoms of W 1 , W 2 , W 3 and W 4 is 30 or less, which alkyl group may be linear or branched, or W 1 and W 2 , W 2 and W 3 or W 3 and W 4 may be combined to form a 5- or 6-membered heterocyclic ring.
Claim 8
Dependent Claim
157 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 4, characterized in that said silver halide solvent is a thioether compound having the following general formula (IIA) or (IIB): Q--[(CH.sub.2).sub.r --CH.sub.2 --S--(CH.sub.2).sub.2 --X'--(R).sub.p --(CH.sub.2).sub.2 --(R').sub.q --S--CH.sub.2 --(CH.sub.2).sub.m --Z'].sub.n (IIA) Q--(CH.sub.2).sub.m --CH.sub.2 --S--(CH.sub.2).sub.n --S--CH.sub.2 --(CH.sub.2).sub.r --Z' (IIB) wherein r and m are independently 0 or an integer of from 1 to 4; n is an integer of from 1 to 4; p and q are independently 0 or an integer of from 1 to 3; X' represents an oxygen atom, a sulfur atom, ##STR11## R and R' represents independently a --CH 2 --CH 2 --O-- or --O--CH 2 --CH 2 -- group; and Q and Z' represents independently ##STR12## wherein R" represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, or Q and Z' may represent together a substituent represented by X' defined above to form a cyclic compound.
Claim 9
Dependent Claim
85 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 7, characterized in that said silver halide solvent is a thioether compound having one of the following general formulae (IIC) to (IIH): ##STR13## wherein r' represents 0 or an integer of from 0 to 3; m' represents an integer of 1 or 2; R 3 and R 5 each represents an alkylene group having 1 to 5 carbon atoms; and R 4 represents an alkyl group having 1 to 5 carbon atoms.
Claim 10
Dependent Claim
137 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 4, characterized in that said silver halide solvent is a compound having a general formula (III): ##STR14## wherein K represents a sulfur atom or an oxygen atom; M 0 and M 1 may be the same or different and each represents an unsubstituted or substituted aliphatic group having 1 to 4 carbon atoms, an unsubstituted or substituted aryl group, a heterocyclic ring residue or an amino group; M 0 and M 1 may be combined together to form a 5- or 6-membered heterocyclic ring; M 2 represents an unsubstituted or substituted aliphatic group having 1 to 4 carbon atoms or an unsubstituted or substituted aryl group; and M 1 and M 2 may be combined together to form a 5- or 6-membered heterocyclic ring.
Claim 11
Dependent Claim
58 words
A silver halide color reversal reflection print photsensitive material as claimed in claim 9, characterized in that said silver halide solvent is a compound having the general formula (III'): ##STR15## wherein L represents a group of atoms required to complete a heterocyclic ring and K and M 0 have the same meaning as defined for the formula (III).
Claim 12
Dependent Claim
37 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 4, characterized in that the amount of the sileer halide solvent used is 10 -5 to 2.5×10 -2 mol per mol of silver halide.
Claim 13
Dependent Claim
48 words
A silver halide color reversal reflection print photosensitive material as claimed in claim 1, which provides a D-log E curve showing substantial linearity between 1.8 and 0.8 with respect to developed color density and which has a sharp cut at the toe portion of the D-log E curve.
References Cited (Backward Citations)
US3271157A
Cited
US3505068A
Cited
US3574628A
Cited
GB1586412A
Cited
US4297439A
Cited
US4284717A
Cited
US4497895A
Cited
US4552838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |