EP0093002A2
Expired / Lapsed
EP
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A direct-positive silver halide photographic material
Assignee: Konica Minolta Inc
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Filing: 1983-04-22
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Granted: —
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Expires: 2003-04-22
Abstract
Abstract A stable, low speed direct-positive silver halide photographic material, which can be safely handled under a yellow light or room light free of UV comprises a support, a silver halide emulsion layer comprising fogged silver halide particles prepared in the presence of a water soluble iridium or rhodium salt, and a hydrophilic colloidal layer which comprises a compound having the Formula [I] or [II], and at least one compound selected from a compound having the Formula [III] and a gold compound. <CHEM> wherein R1 or R3 is hydrogen, alkyl, -SO3M or -COOM (wherein M is hydrogen, alkali metal or ammonium) and R2 is hydrogen or alkyl, R4 is hydrogen, alkyl of -CH2 -S-(CH2)n-Y min (wherein n is 1 to 3, and Y min is hydrogen of -SO3M), H2N-Y &lsqbstr& NH-Y &rsqbstr& @NH2 (III) = wherein n is 1 to 5, and Y is alkylene.
Inventors
- 👤 Kazuhiro Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 07:11
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/485; G03C1/48515; Y; Y10; Y10S; Y10S430/00; Y10S430/141
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
168 words
A direct-positive silver halide photographic material comprising a support, a silver halide emulsion layer comprising fogged silver halide particles prepared in the presence of a water soluble iridium or rhodium salt, and a hydrophilic colloidal layer characterized in that said colloidal layer contains a compound having the Formula [I] or [II] and at least one compound selected from a compound having the Formula [III] and a gold compound, wherein R I is hydrogen, alkyl, -SO 3 M or -COOM (wherein M is hydrogen, alkali metal or ammonium), and R 2 is hydrogen or alkyl, wherein R 3 is hydrogen, alkyl, -SO 3 M or -COOM (wherein M is hydrogen, alkali metal or ammonium), and R 4 is hydrogen, alkyl or -CH 2 -S-(CH 2 ) n -Y' (wherein n is 1 to 3, and Y' is hydrogen -S0 3 M), wherein n is from 1 to 5, and each Y, which may be the same or different, is an alkylene radical having from 2 to 4 carbon atoms.
Claim 2
Dependent Claim
168 words
A direct-positive silver halide photographic material comprising a support, a silver halide emulsion layer comprising fogged silver halide particles prepared in the presence of a water soluble iridium or rhodium salt, and a hydrophilic colloidal layer characterized in that said colloidal layer contains a compound having the Formula [I] or [II] and at least one compound selected from a compound having the Formula [III] and a gold compound, wherein R I is hydrogen, alkyl, -SO 3 M or -COOM (wherein M is hydrogen, alkali metal or ammonium), and R 2 is hydrogen or alkyl, wherein R 3 is hydrogen, alkyl, -SO 3 M or -COOM (wherein M is hydrogen, alkali metal or ammonium), and R 4 is hydrogen, alkyl or -CH 2 -S-(CH 2 ) n -Y' (wherein n is 1 to 3, and Y' is hydrogen -S0 3 M), wherein n is from 1 to 5, and each Y, which may be the same or different, is an alkylene radical having from 2 to 4 carbon atoms.
Claim 3
Dependent Claim
25 words
A material according to Claim 1, characterized in that the compound having Formula [III] is diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, hexaethyleneheptamine, tripropylenetetramine, dibutylenetriamine, spermine, spermidine, n-(4-aminobutyl)cadaverine.
Claim 4
Dependent Claim
21 words
A material according to Claim 1 or 2 characterized in that said iridium salt is potassium or sodium iridium (III) hexachloride.
Claim 5
Dependent Claim
25 words
A material according to Claim 1 or 2 characterized in that said rhodium salt is rhodium (III) trichloride, rhodium(IV) tetrachloride or potassium rhodium (III) hexabromide.
Claim 6
Dependent Claim
46 words
A material according to any of Claims 1 to 4 characterized in that said gold compound is chloroauric acid, potassium chloroaurate, gold thiocyanate, sodium chloroaurate, potassium aurate, potassium chloroaurate, potassium bromoaurate, potassium iodoaurate, potassium gold cyanide, potassium gold thiocyanide, gold thioglucose, gold sulfide or gold selenide.
Claim 7
Dependent Claim
40 words
A material according to any of Claims 1 to 5 characterized in that the quantity of the compound having Formula [I] or [II] is from 1.0 x 10 -6 to 1.0 x 10 -1 mole per mole of silver halide.
Claim 8
Dependent Claim
38 words
A material according to any of Claims 1 to 6 characterized in that the quantity of the compound having Formula [III] is from 1.0 x 10 -7 to 1.0 x 10 2 mole per mole of silver halide.
Claim 9
Dependent Claim
36 words
A material according to any of Claims 1 to 6 characterized in that the quantity of the gold compound is from 1.0 x 10 -7 to 1.0 x 10 -4 mole per mole of silver halide.
References Cited (Backward Citations)
No citation records indexed.
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