申请人:Mitsubishi Paper Mills Ltd.
公开号:US05637439A1
公开(公告)日:1997-06-10
Negative images of super-high contrast can be formed by developing an exposed silver halide photographic photosensitive material in the presence of at least one compound selected from the compound of formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, R.sup.1 and R.sup.2, R.sup.3 and R.sup.4, R.sup.5 and R.sup.6, or R.sup.1 and R.sup.3, together with nitrogen atom to which they are attached, may form a ring; L.sup.1 and L.sup.2 independently represent an alkylene group, an arylene group or a repeated alkyleneoxy group having at least two repeated alkyleneoxy units, which groups may be optionally substituted; A represents an atom selected from hydrogen, carbon, nitrogen, oxygen and sulfur or a divalent linkage group constituted from these atoms; and m and n represent 0 or 1, and the compound of formula (2) ##STR2## wherein R.sup.7, R.sup.8 and R.sup.9 independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; R.sup.7 and R.sup.8 together with nitrogen atom to which they are attached, may form a ring; L represents an alkylene group, an arylene group or a repeated alkyleneoxy group having at least two repeated alkyleneoxy units, which groups may be substituted or unsubstituted; and E represents --N(COR.sup.11)--, --N(CONR.sup.12 R.sup.13)--, --NR.sup.14 COCONR.sup.15 --, --N(COCONR.sup.16 R.sup.17)--, --N(SO.sub.2 R.sup.18)-- or --N (COOR.sup.19)--, where R.sup.11 --R.sup.19 independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group; and R.sup.12 and R.sup.13 or R.sup.16 and R.sup.17 together with nitrogen atom to which they are attached, may form a ring, with the proviso that when E represents --N(COR.sup.11)--, --N(CONR.sup.12 R.sup.13)--, --N(SO.sub.2 R.sup.18)-- or --N(COOR.sup.19)--, R.sup.9 is not a hydrogen atom.
通过在至少选自式(1)化合物中的一种存在下,对暴露的银卤化物感光材料进行显影,可以形成超高对比度的负像:其中R1、R2、R3、R4、R5和R6分别独立地表示氢原子、烷基、芳基或杂环基,R1和R2、R3和R4、R5和R6或R1和R3与它们所连接的氮原子一起可以形成环;L1和L2独立地表示烷基、芳基或至少具有两个重复烷基氧基单元的重复烷基氧基单元,这些基团可以选择性地被取代;A表示从这些原子中选出的氢、碳、氮、氧和硫原子或由这些原子构成的双价连接基团;m和n表示0或1,以及式(2)中的化合物:其中R7、R8和R9分别独立地表示氢原子、烷基、芳基或杂环基;R7和R8与它们所连接的氮原子一起可以形成环;L表示烷基、芳基或至少具有两个重复烷基氧基单元的重复烷基氧基单元,这些基团可以被取代或未被取代;E表示--N(COR11)--、--N(CONR12R13)--、--NR14COCONR15--、--N(COCONR16R17)--、--N(SO2R18)--或--N(COOR19)--,其中R11-R19独立地表示氢原子、烷基、芳基或杂环基;而R12和R13或R16和R17与它们所连接的氮原子一起可以形成环,但是当E表示--N(COR11)--、--N(CONR12R13)--、--N(SO2R18)--或--N(COOR19)--时,R9不是氢原子。