Patent US4508818A successfully refreshed from Google Patents.
US4508818A
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US
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Silver halide photographic sensitive materials
Assignee: Fujifilm Holdings Corp
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Filing: 1984-03-26
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Granted: 1985-04-02
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Expires: 2004-03-26
Abstract
Abstract A silver halide photographic sensitive material is disclosed. The material is comprised of a support base which has a sensitive silver halide emulsion layer on the surface of the base. On the silver halide emulsion layer is a first and a second insensitive layer. The second insensitive layer has a melting time which is higher than that of the first insensitive layer. The first insensitive layer has a melting time which is equal to or higher than the melting time of the silver halide emulsion layer. The resulting material can be advantageously utilize within an automatic developing apparatus. The material has improved mechanical properties and results in a reduced amount of scum being formed within the developing solution.
Inventors
- 👤 Masashi Ogawa
- 👤 Kunio Ishigaki
- 👤 Nobuyuki Iwasaki
- 👤 Taku Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:04
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/307; G03C1/76; G03C1/7614; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
86 words
A silver halide photographic sensitive material, comprising: a support base; a sensitive silver halide emulsion layer on the support base; a first insensitive layer positioned on the silver halide emulsion layer; and a second insensitive layer positioned on the first insensitive layer, wherein the second insensitive layer has a melting time higher than the first insensitive layer which has a melting time equal to or higher than that of the silver halide emulsion layer, wherein the second insensitive layer is hardened with a non-diffusible polymeric hardener.
Claim 2
Dependent Claim
86 words
A silver halide photographic sensitive material, comprising: a support base; a sensitive silver halide emulsion layer on the support base; a first insensitive layer positioned on the silver halide emulsion layer; and a second insensitive layer positioned on the first insensitive layer, wherein the second insensitive layer has a melting time higher than the first insensitive layer which has a melting time equal to or higher than that of the silver halide emulsion layer, wherein the second insensitive layer is hardened with a non-diffusible polymeric hardener.
Claim 3
Dependent Claim
50 words
The silver halide light-sensitive photographic material as claimed in claim 1, wherein the relation between the melting time of the most exterior layer (M.Tu) and that of the light-sensitive silver halide emulsion layer (M.Ts) represented by M.Tu/M.Ts ratio is in a range of more than 1 and less than 20.
Claim 4
Dependent Claim
50 words
The silver halide light-sensitive photographic material as claimed in claim 1, wherein the relation between the melting time of the most exterior layer (M.Tu) and that of the light-sensitive silver halide emulsion layer (M.Ts) represented by M.Tu/M.Ts ratio is in a range of more than 1 and less than 10.
Claim 5
Dependent Claim
50 words
The silver halide light-sensitive photographic material as claimed in claim 1, wherein the relation between the melting time of the most exterior layer (M.Tu) and that of the light-sensitive silver halide emulsion layer (M.Ts) represented by M.Tu/M.Ts ratio is in a range of more than 3 and less than 6.
Claim 6
Dependent Claim
20 words
A silver halide photographic sensitive material, as claimed in claim 1, wherein the second insensitive layer is the outermost layer.
Claim 7
Dependent Claim
29 words
The silver halide photographic sensitive material, as claimed in claim 1, wherein the first insensitive layer has a melting time higher than that of the silver halide emulsion layer.
Claim 8
Dependent Claim
23 words
The silver halide photographic sensitive material, as claimed in claim 1, wherein the second insensitive layer is further comprised of a matting agent.
Claim 9
Dependent Claim
23 words
The silver halide photographic sensitive material, as claimed in claim 1, wherein the second insensitive layer is further comprised of an antistatic agent.
Claim 10
Dependent Claim
26 words
The silver halide photographic sensitive material, as claimed in claim 1, wherein the polymeric hardener is a polymer having a repeating unit having a vinyl-sulfone group.
Claim 11
Dependent Claim
27 words
The silver halide photographic sensitive material, as claimed in claim 1, wherein the second insensitive layer is further comprised of a low molecular weight diffusible hardening agent.
Claim 12
Dependent Claim
31 words
The silver halide photographic sensitive material, as claimed in claim 1, wherein the first insensitive layer and the second insensitive layer have a thickness within the range of 0.2 to 5μ.
Claim 13
Dependent Claim
30 words
The silver halide photographic sensitive material, as claimed in claim 7, wherein the first insensitive layer and the second insensitive layer have thicknesses within the range of 0.3 to 2μ.
Claim 14
Dependent Claim
53 words
The silver halide light-sensitive photographic material as claimed in claim 1, wherein at least one of the light-sensitive silver halide emulsion layer is provided on both sides of the support and the uppermost layer is provided on the outside of the outermost silver halide emulsion layer existed on both sides of the support.
Claim 15
Dependent Claim
20 words
The silver halide light-sensitive photographic material as claimed in claim 1, wherein the plurality of layers contain non-diffusible polymeric hardeners.
Claim 16
Dependent Claim
36 words
The silver halide light-sensitive photographic material as claimed in claim 14, wherein the non-diffusible polymeric hardener has molecular weight of more than about 10,000 and at least one functional group reactive to gelatin to form cross-linking.
Claim 17
Dependent Claim
203 words
The silver halide light-sensitive photographic material as claimed in claim 14, wherein the non-diffusible polymeric hardener has a repeating unit of the formula (I): ##STR14## wherein A is a monomer unit prepared by copolymerizing copolymerizable ethylenically unsaturated monomers; R 1 is hydrogen or a lower alkyl group having 1 to 6 carbon atoms; ##STR15## (wherein R 1 is the same as defined above) or an arylene group having 6 to 10 carbon atoms; L is a divalent group having 3 to 15 carbon atoms and containing at least one linking group selected from the members consisting of --CO 2 -- and ##STR16## (wherein R 1 is the same carbon atoms and containing at least one linking group selected from the members consisting of --O--, ##STR17## --CO--, --SO--, --SO 2 --, --SO 3 --, ##STR18## (wherein R 1 is the same as defined above); R 2 is --CH═CH 2 or --CH 2 CH 2 X (wherein X is a group capable of being substituted with a nucleophilic group or a group capable of being released in the form of HX upon a base); and x and y each represents molar percent, x being between 0 and 99 and y being between 1 and 100.
Claim 18
Dependent Claim
152 words
The silver halide light-sensitive photographic material as claimed in claim 14, wherein the non-diffusible polymeric hardener has a repeating unit of the formula (II): ##STR19## wherein A is a polymerized α,β-ethylenically unsaturated addition polymerizable monomer or a mixture of such polymerizable monomers, x is a molar unit of from 10 to 95, and y is a molar unit of from 5 to 90, L is a linking group selected from the group consisting of alkylene, arylene, COZ and COZR 3 , R 3 is selected from the group consisting of alkylene and arylene, Z is O or NH, R is hydrogen or alkyl having 1 to 6 carbon atoms, and R' is --CH═CHR 2 or --CHCH 2 X where X is a leaving group which can be displaced by a nucleophile or can be eliminated in the form of HX upon treatment with base and R 2 is hydrogen, alkyl or aryl.
Claim 19
Dependent Claim
93 words
The silver halide light-sensitive photographic material as claimed in claim 14, wherein the non-diffusible polymeric hardener contains (i) 5 to 100 molar percent of a repeating unit of the general formula (III): ##STR20## wherein R is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; L, if present, is a divalent linking group having 1 to 20 carbon atoms; X is an active carboxylic ester group; and m is 0 or 1; and optionally contains (ii) 0 to 95 molar percent of one or more other monomer unit "A".
Claim 20
Dependent Claim
60 words
The silver halide light-sensitive photographic material as claimed in claim 14, wherein the non-diffusible polymeric hardener has a repeating unit selected from the group consisting of: ##STR21## wherein M is a hydrogen atom, a sodium atom or a potassium atom, and x and y represent molar percent x being from 0 to 99, and y being from 1 to 100.
Claim 21
Dependent Claim
47 words
The silver halide light-sensitive photographic material as claimed in claim 14, wherein the non-diffusible polymeric hardener has a repeating unit selected from the group consisting of: ##STR22## wherein x and y represent molar percent, x being from 0 to 99, and y being from 1 to 100.
Claim 22
Dependent Claim
47 words
The silver halide light-sensitive photographic material as claimed in claim 14, wherein the non-diffusible polymeric hardener has a repeating unit selected form the group consisting of: ##STR23## wherein x and y represent molar percent, x being from 0 to 99, and y being from 1 to 100.
Claim 23
Dependent Claim
40 words
The silver halide light-sensitive photographic material as claimed in claim 14, wherein the non-diffusible polymeric hardener is a member selected from the group consisting of [2-(3-vinylsulfonyl)propionyloxy]ethyl acrylate/sodium acrylamido-2-methylpropanesulfonate copolymer, 2-[3-(chloroethylsulfonyl)propionyloxy]ethyl acrylate/sodium acrylamido-2-methylpropanesulfonate copolymer, [3-(chloroethylsulfonyl)propionyl]aminomethylstyrene/sodium acrylamido-2-methylpropanesulfonate copolymer and 1-{[2-(4-vinylbenzenesulfonyl)ethyl]sulfonyl}-3-chloroethylsulfonyl-2-propanol/sodium acrylate copolymer.
Claim 24
Dependent Claim
18 words
The silver halide photographic sensitive material as claimed in claim 1, wherein the second insensitive layer is 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) | 1988-04-01 | 1988-10-01 | 1989-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-01 | 1992-10-01 | 1993-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-01 | 1996-10-01 | 1997-04-02 | $7700.00 | Window Closed / Lapsed |