Silver halide color photosensitive material and image forming method

A silver halide color photosensitive material, comprising:

• at least one yellow-color-forming light-sensitive silver halide emulsion layer, at least one magenta-color-forming light-sensitive silver halide emulsion layer, and at least one cyan-color-forming light-sensitive silver halide emulsion layer on a reflective support;
• and at least one non-light-sensitive non-color-forming hydrophilic colloidal layer,
• wherein
• at least one of the photosensitive silver halide emulsion layers contains a silver halide emulsion that contains 90 mol % or more of silver chloride;
• and
• a compound having a repetitive unit represented by the following formula (I) is contained:
• wherein R1 represents —OR, —SR, or —N—R(—R′), in which R and R′ each independently represent a hydrogen atom, or an alkyl group, an aryl group, an aralkyl group, a cycloalkyl group, or a heterocyclic group, which may be further substituted, or R and R′ may bond together to form a saturated carbon ring or a heterocycle constructed of an alkylene group including —O—;
• R2 and R3 each independently represent a hydrogen atom or an alkyl group which may be further substituted;
• Y1 and Y2 each independently represent a polymethylene group, an arylene group, or a cycloalkylene group, which may be further substituted;
• Z represents —O—, —SO2—, or —CH2—;
• and m represents 0 (zero) or 1.