EP0106690A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of providing an increased brightening effect and silver halide photographic material having increased brightening effect
Assignee: Konica Minolta Inc
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Filing: 1983-10-17
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Granted: —
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Expires: 2003-10-17
Abstract
Abstract 57 A silver halide color photographic material having improved whiteness and a method of processing said material are disclosed. The material is formed on a hydrophobic support at least one silver halide emulsion layer, a layer containing a brightening agent and a layer containing a compound that is capable of trapping the brightening agent, said layer containing a compound capable of trapping the brightening agent being separate from the layer containing the brightening agent and positioned more remote from the support than the latter layer, and also, the method for providing enhanced brightening effect comprises subjecting said material to imagewise exposure and color development so that said brightening agent is diffused into and trapped by the layer containing capable of trapping the brightening agent.
Inventors
- 👤 Toyoki Nishijima
- 👤 Masao Sasaki
- 👤 Kaoru Onodera
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 13:09
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/396; Y; Y10; Y10S; Y10S430/00; Y10S430/134
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
70 words
A silver halide color photographic material having formed on a hydrophobic support at least one silver halide emulsion layer, a layer containing a brightening agent and a layer containing a compound that is capable of trapping the brightening agent, said layer containing a compound capable of trapping the brightening agent being separate from the layer containing the brightening agent and positioned more remote from the support than the latter layer.
Claim 2
Dependent Claim
70 words
A silver halide color photographic material having formed on a hydrophobic support at least one silver halide emulsion layer, a layer containing a brightening agent and a layer containing a compound that is capable of trapping the brightening agent, said layer containing a compound capable of trapping the brightening agent being separate from the layer containing the brightening agent and positioned more remote from the support than the latter layer.
Claim 3
Dependent Claim
88 words
A silver halide color photographic material according to Claim 1 which further includes one or more layers containing a UV absorber, the layer containing the brightening agent being positioned closer to the support than the UV absorber containing layer(s) which is (are) the most remote from the support, the compound capable of trapping the brightening agent being incorporated in the UV absorber containing layer the most remote from the support and/or a layer which is more remote from the support than said most remote UV absorber containing layer.
Claim 4
Dependent Claim
26 words
A silver halide color photographic material according to Claim 1 or 2 wherein said brightening agent is selected from a diaminostilbene, benzidine, imidazole or imidazolone compound.
Claim 5
Dependent Claim
28 words
A silver halide color photographic material according to any one of Claims 1 to 3 wherein said compound capable of trapping the brightening agent is a hydrophilic polymer.
Claim 6
Dependent Claim
24 words
A silver halide color photographic material according to Claim 4, wherein said hydrophilic polymer is polyvinylpyrrolidone or polymer having vinylpyrrolidone as a repeating unit.
Claim 7
Dependent Claim
26 words
A silver halide color photographic material according to Claim 4 or 5 wherein said hydrophilic polymer has a weight average molecular weight of 1,000 or more.
Claim 8
Dependent Claim
69 words
A silver halide color photographic material according to any one of Claims 2 to 6, wherein said UV absorber is a benzotriazole compound represented by the following formula: wherein R 1 , R 2 and R 3 are each independently a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an arylox y group, an alkenyl group, a nitro group or a hydroxyl group.
Claim 9
Dependent Claim
31 words
A silver halide color photographic material according to any one of Claims 1 to 7, wherein said layer containing a brightening agent contains 0.1 to 0.5 mg/dm 2 of brightening agent.
Claim 10
Dependent Claim
21 words
A silver halide color photographic material according to any one of Claims 1 to 8, which further includes a protective layer.
Claim 11
Dependent Claim
37 words
A silver halide color photographic material according to Claim 9, wherein said layer containing a compound capable of trapping the brightening agent is positioned between the emulsion layer positioned remotest from the support and the protective layer.
Claim 12
Dependent Claim
21 words
A silver halide color photographic material according to any one of Claims 1 to 10, which further includes a non-emulsion layer.
Claim 13
Dependent Claim
35 words
A silver halide color photographic material according to Claim 11, wherein said layer containing a brightening agent is the non-emulsion layer that is positioned closer to the support than the UV absorber containing layer positioned.
Claim 14
Dependent Claim
21 words
A silver halide color photographic material according to any one Claims 1 to 12, wherein said support is a reflective support.
Claim 15
Independent Claim
104 words
A method for providing a silver halide color photographic material with an enhanced brightening effect which comprising subjecting a silver halide color photographic material having formed on a hydrophobic support at least one silver halide emulsion layer, a layer containing a brightening agent and a layer containing a compound that traps the brightening agent, said layer being separate from the layer containing the brightening agent and positioned more remote from the support than the latter layer to imagewise exposure and color development so that said brightening agent diffuses into and is trapped by the layer containing the compound capable of trapping the brightening agent.
Claim 16
Independent Claim
104 words
A method for providing a silver halide color photographic material with an enhanced brightening effect which comprising subjecting a silver halide color photographic material having formed on a hydrophobic support at least one silver halide emulsion layer, a layer containing a brightening agent and a layer containing a compound that traps the brightening agent, said layer being separate from the layer containing the brightening agent and positioned more remote from the support than the latter layer to imagewise exposure and color development so that said brightening agent diffuses into and is trapped by the layer containing the compound capable of trapping the brightening agent.
References Cited (Backward Citations)
No citation records indexed.
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