| 摘要 |
An image forming method comprising the steps of: rotating a drum having wound thereon a heat developable light-sensitive material which comprises a support having thereon at least a light-sensitive silver halide emulsion, a binder and a dye-donating compound; exposing said light-sensitive material with an exposure head comprising a plurality of beam light sources which are arranged at a predetermined interval along a sub-scanning direction perpendicular to a main scanning direction in which the drum is rotated, to correspond to a plurality of exposure points, respectively, and each of which emits light having the same wavelength each other; and moving said exposure head in said sub-scanning direction by 1/N (N is an integer of 2 or more) of the length of the arrangement of said beam light sources, to effect a scanning exposure of said light-sensitive material in steps of a plurality of exposure points.
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