| 摘要 |
An image forming method of a photothermographic material comprising a light-sensitive layer containing an organic silver salt, photosensitive silver halide grains and a reducing agent and a light-insensitive layer is disclosed, comprising exposing and thermally developing the photothermographic material using a laser imager, wherein a total thickness of the light-sensitive layer and the light-insensitive layer is from 10 to 20 mum and at least one of the constituent layers contains a compound capable of forming a dye image upon thermal development; the laser imager comprises a developing section having a path length ( 1 ) and a cooling section having a path length ( 2 ), a ratio of the path length ( 2 ) to the path length ( 1 ) is not more than 1.5, and the cooling section having a function of conveying the photothermographic material sent from the developing section while cooling the photothermographic material.
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