US4552835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic light-sensitive element having a light insensitive upper layer
Assignee: Fujifilm Holdings Corp
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Filing: 1984-06-14
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Granted: 1985-11-12
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Expires: 2004-06-14
Abstract
Abstract A silver halide photographic light-sensitive material for photomechanical process and a method for the reduction treatment of said light-sensitive material are described. The light-sensitive material comprises a support, at least one light-sensitive silver halide emulsion layer, and at least one light-insensitive upper layer, characterized in that at least one light-insensitive upper layer contains a polymer comprising: (a) a monomer unit containing at least one group having an electric charge; and (b) a monomer unit having a functional group capable of crosslinking through a gelatin hardening agent with a like functional group of another polymer chain of the same type or with gelatin. The light-sensitive material is very advantageous; for example, it has greatly improved reduction treatment suitability, and the reduction treatment suitability is not deteriorated even if the amount of silver coated per unit area is reduced.
Inventors
- 👤 Taku Nakamura
- 👤 Yasuo Kasama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:58
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03F; G03F7/00; G03F7/004; G03F7/06; Y; Y10; Y10S; Y10S430/00; Y10S430/151; Y10S430/162
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
165 words
A silver halide photographic light-sensitive element for use in a photomechanical process comprising a support, at least one light-sensitive silver halide emulsion layer on the support, and at least one light-insensitive upper layer on the light-sensitive silver halide emulsion layer, wherein at least one light-insensitive upper layer contains a binder, a gelation hardening agent and a polymer comprising: (a) at least 10 mol% of a monomer unit containing at least one group having an electric change, wherein said group is selected from groups which contain an anionic charge, a cationic charge and an amphoteric charge; and (b) at least 0.1 mol% of a monomer unit having a functional group capable of cross-linking through a gelatin hardening agent with a like functional group of another polymer chain of the same type or with gelatin, wherein said functional group is a nucleophillic group, wherein the light-insensitive upper layer contains the polymer in an amount of 3 to 100% by weight based on the weight of the binder.
Claim 2
Dependent Claim
165 words
A silver halide photographic light-sensitive element for use in a photomechanical process comprising a support, at least one light-sensitive silver halide emulsion layer on the support, and at least one light-insensitive upper layer on the light-sensitive silver halide emulsion layer, wherein at least one light-insensitive upper layer contains a binder, a gelation hardening agent and a polymer comprising: (a) at least 10 mol% of a monomer unit containing at least one group having an electric change, wherein said group is selected from groups which contain an anionic charge, a cationic charge and an amphoteric charge; and (b) at least 0.1 mol% of a monomer unit having a functional group capable of cross-linking through a gelatin hardening agent with a like functional group of another polymer chain of the same type or with gelatin, wherein said functional group is a nucleophillic group, wherein the light-insensitive upper layer contains the polymer in an amount of 3 to 100% by weight based on the weight of the binder.
Claim 3
Dependent Claim
28 words
A light-insensitive element as in claim 1, wherein the monomer unit (b) has a functional group which has a pKa of not more than 9.5 and is nucleophilic.
Claim 4
Dependent Claim
28 words
A light-sensitive element as in claim 1, wherein the monomer unit (b) has a functional group which has a pKa of not more than 8.5 and is nucleophilic.
Claim 5
Dependent Claim
23 words
A light-sensitive element as in claim 1, wherein the proportion of monomer unit (a) in the polymer is from 60 to 98 mol%.
Claim 6
Dependent Claim
23 words
A light-sensitive element as in claim 2, wherein the proportion of monomer unit (a) in the polymer is from 60 to 98 mol%.
Claim 7
Dependent Claim
23 words
A light-sensitive element as in claim 3, wherein the proportion of monomer unit (a) in the polymer is from 60 to 98 mol%.
Claim 8
Dependent Claim
20 words
A light-sensitive element as in claim 1, wherein the proportion of monomer unit (b) is from 2 to 40 mol%.
Claim 9
Dependent Claim
20 words
A light-sensitive element as in claim 2, wherein the proportion of monomer unit (b) is from 2 to 40 mol%.
Claim 10
Dependent Claim
20 words
A light-sensitive element as in claim 3, wherein the proportion of monomer unit (b) is from 2 to 40 mol%.
Claim 11
Dependent Claim
20 words
A light-sensitive element as in claim 4, wherein the proportion of monomer unit (b) is from 2 to 40 mol%.
Claim 12
Dependent Claim
20 words
A light-sensitive element as in claim 1, wherein the functional group of monomer unit (b) is a sulfinic acid group.
Claim 13
Dependent Claim
22 words
A light-sensitive element as in claim 1, wherein the molecular weight of the polymer is from 1×10 4 to 1×10 7 .
Claim 14
Dependent Claim
22 words
A light-sensitive element as in claim 1, wherein the molecular weight of the polymer is from 1×10 5 to 2×10 6 .
Claim 15
Dependent Claim
42 words
A silver halide photographic light-sensitive element as claimed in claim 1, wherein said gelatin hardening agent is selected from the group consisting of aldehydes, N-methylol compounds, dioxane derivatives, active vinyl compounds, active halogen compounds, mucohalogenic acids, isooxazoles, dialdehyde starch, and 1-chloro-6-hydroxytriazinylated gelatin.
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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) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |