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    • 8. 发明授权
    • Light-sensitive photographic element comprising a magenta image
dye-providing compound
    • US4256831A
    • 1981-03-17
    • US68508
    • 1979-08-22
    • Masaru KanbeKazumasa WatanabeMorito UemuraJiro TakahashiRyuichiro KobayashiTatsuhiko Kobayashi
    • Masaru KanbeKazumasa WatanabeMorito UemuraJiro TakahashiRyuichiro KobayashiTatsuhiko Kobayashi
    • G03C7/00C09B29/01C09B29/28G03C8/10G03C1/10G03C1/40G03C5/54
    • G03C8/10C09B29/0003C09B29/28
    • A light-sensitive photographic element comprising a support and at least one light-sensitive silver halide emulsion layer coated thereon having associated therewith a magenta image dye-providing compound which releases a magenta dye or a precursor thereof corresponding to the imagewise exposure of said emulsion layer, said magenta dye-providing compound being a compound represented by formula [I]: ##STR1## wherein Car represents a carrier moiety which can be oxidized under alkaline conditions to release a diffusible dye or a precursor thereof from said compound;R.sup.1 and R.sup.2, which may be the same or different, independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms (provided that the total sum of carbon atoms in R.sup.1 and R.sup.2 does not exceed 5), or R.sup.1 and R.sup.2 may form, together with the nitrogen atom, ##STR2## X represents a hydroxyl group, a salt thereof or a group, which can be converted into a hydroxyl group by hydrolysis, having the following formula: ##STR3## in which R.sup.3 represents an alkyl or haloalkyl group having 1 to 18 carbon atoms or a phenyl group which may be substituted; Y represents a ##STR4## group in which R.sup.4 and R.sup.5, which may be the same or different, independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group (provided that the total sum of carbon atoms in R.sup.4 and R.sup.5 does not exceed 6);Z represents a hydrogen atom, a chlorine atom, a methyl group or a methoxy group;l is 1 or 2 provided that when l is 2 each Z may be the same or different;m is 0 or 1;andJ represents a bivalent linking group having the formula --R.sup.6 --(O).sub.n --R.sub.p.sup.7 -- in which R.sup.6 and R.sup.7, which may be the same or different, independently represent an alkylene group having 1 to 8 carbon atoms, a phenylene group which may be substituted; n represents 0 or 1; p represents 0 or 1 provided that p is 1 when n is 1 and 1 or 0 when n is 0 (provided that, when p is 1, the total sum of carbon atoms in R.sup.6 and R.sup.7 does not exceed 13).