Patent EP0213700A2 successfully refreshed from Google Patents.
EP0213700A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Silver halide photographic light-sensitive material
Assignee: Konica Minolta Inc
•
Filing: 1986-07-04
•
Granted: —
•
Expires: 2006-07-04
Abstract
Abstract A silver halide photographic light-sensitive material is disclosed which is improved in registance to a light discoloration and an appearance of haze. The photographic material comprises a support, at least one silver halide light-sensitive layer and at least two non-light-sensitive layer being provided at a further position from the support, and the non-light-sensitive layer provided at the outermost position contains a fine powder of which averaged grain size is from 1 to 10 µm, and the other non-light-sensitive layer contains at least three kinds of UV absorbers represented by the general formula [UV-1] in combination,
Inventors
- 👤 Masao Sasaki
- 👤 Kaoru Onodera
- 👤 Takashi Kadowaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 21:10
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C1/00; G03C1/76; G03C1/95; Y; Y10; Y10S; Y10S430/00; Y10S430/132
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
260 words
A silver halide photographic light-sensitive material comprising a reflective support, and provided thereon, a light-sensitive silver halide emulsion layer and at least two non-light-sensitive layers being provided at a further position from said support, wherein the non-light-sensitive layer provided at the outermost position contains a fine powder of which averaged grain size is from 1 to 10 µm and the other non-light-sensitive layer contains at least three kinds of U V absorbers represented by the general formula [UV- I] in combination, wherein R 1 ,R 2 and R 3 are independently selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkenyl group, a nitro group and a hydroxy group, provided that at least one of said UV absorbers is selected from a first class which is in a liquid state at 30 0 C and at least two of said UV absorbers are selected from a second class which is in a solid state at the same temperature, that said first class UV absorber is contained in a proportion of not less than 30% by weight to the total amount of said UV absorbers and that at least on of said second class UV absorbers has the total number of carbon atoms of at least 8 in the groups represented by R 1 and R 2 of the general formula [UV-I] and is contained in a proportion of from 35% to 100% by weight to the total amount of said second class UV absorbers.
Claim 2
Dependent Claim
260 words
A silver halide photographic light-sensitive material comprising a reflective support, and provided thereon, a light-sensitive silver halide emulsion layer and at least two non-light-sensitive layers being provided at a further position from said support, wherein the non-light-sensitive layer provided at the outermost position contains a fine powder of which averaged grain size is from 1 to 10 µm and the other non-light-sensitive layer contains at least three kinds of U V absorbers represented by the general formula [UV- I] in combination, wherein R 1 ,R 2 and R 3 are independently selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkenyl group, a nitro group and a hydroxy group, provided that at least one of said UV absorbers is selected from a first class which is in a liquid state at 30 0 C and at least two of said UV absorbers are selected from a second class which is in a solid state at the same temperature, that said first class UV absorber is contained in a proportion of not less than 30% by weight to the total amount of said UV absorbers and that at least on of said second class UV absorbers has the total number of carbon atoms of at least 8 in the groups represented by R 1 and R 2 of the general formula [UV-I] and is contained in a proportion of from 35% to 100% by weight to the total amount of said second class UV absorbers.
Claim 3
Dependent Claim
78 words
The silver halide photographic light-sensitive material, according to claim 1, wherein said fine powder comprises the material selected from the group consisting of a crystalline or non-crystalline silica, titanium dioxide, magnesium oxide, calsium carbonate, barium sulfate, aluminamagnesium silicate, an acrylic acid-ethylacrylate copolymer, an acrylic- methylmethacrylate copolymer, an itaconic acid-stylene copolymer, a maleic acid-methylmethacrylate copolymer, a maleic acid-styrene copolymer, acrylic acid-phenylacrylate copolymer, a polymethyl methacrylate, an acrylic adiemethacrylic acid-ethylmethacrylate copolymer, a polystyrene, a starch, and a cellulose acetate propionate.
Claim 4
Dependent Claim
33 words
The silver halide photographic light-sensitive material of claim 1 or 2, wherein said fine powder is contained in the outermost non-light-sensitive layer in an amount of from 0.5 to 50 mg per sq.m.
Claim 5
Dependent Claim
38 words
The silver halide photosensitive material of any one of claims 1 to 3, wherein said first class UV absorber is contained in the portion of 30 to 99% by weight to the total amount of the UV absorbers.
Claim 6
Dependent Claim
33 words
The silver halide photosensitive material of claim 4, wherein said first class UV absorber is contained in the portion of 30 to 95% by weight to the total amount of the UV absorbers.
Claim 7
Dependent Claim
67 words
The silver halide photosensitive material of any one of claims 1 to 5, wherein said class UV absorber having the total number of carbon atoms of at least 8 in the groups represented by R 1 and R 2 of the general formula [UV-I] in all is contained in the portion of from 50% to 100% by weight to the total amount of said solid UV absorbers.
Claim 8
Dependent Claim
44 words
The silver halide photosensitive material of any one of claims 1 to 6, wherein the total amount of the UV absorbers contained in the non-photosensitive layer is in the portion of 0.1 to 300% by weight to an amount of a binder contained therein.
Claim 9
Dependent Claim
26 words
The silver halide photosensitive material of claim 7, wherein the portion of the total amount of the UV absorbers to the binder is 1 to 200%.
Claim 10
Dependent Claim
26 words
The silver halide photosensitive material of claim 7, wherein the portion of the total amount of the UV absorbers to the binder is 5 to 100%.
Claim 11
Dependent Claim
39 words
The silver halide photosensitive material of any one of claims 1 to 9, wherein said UV absorbers are dispersed in the non-photosensitive layer, together with a high boiling organic solvent of which dielectric constant is not more than 6.0.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.