Fine polymer particles having heterogeneous phase structure

摘要: Latex polymer of fine particles having a heterogeneous phase structure which comprises core repeating units derived from conjugated diene monomer and shell at least one ethylenically unsaturated carrying an active methylene group; silver halide photographic light-sensitive material core/shell latex whose consists represented by the formula: CH2 ═C(R1)--L--X (wherein R1 represents H, alkyl or halogen, L single bond bivalent coupling group, X provided that is bonded to in form alkylene; method for forming images on exposing emulsion layer hydrophilic colloidal either groups developing exposed with developer dihydroxybenzene agent auxiliary showing superadditivity, pH increase observed when adding 0.1 mole/l NaOH ≦0.25; 9.5≦ initial ≦11.0; amount supplemented ≦225 ml/ml2.