| 摘要 |
PROBLEM TO BE SOLVED: To obtain a material having high contrast, low fog and excellent adaptability for correction of an image after the heat development by using a self-crosslinking polymer latex as a binder for an image forming layer and a protective layer. SOLUTION: A self-crosslinking polymer latex is used as a polymer latex in an image forming layer and/or a protective layer, and the proportion of the self-crosslinking polymer latex to the polymer latex component in the protective layer is >=40 wt.%. As for the self-crosslinking polymer latex, a polymer latex having a poly-1,2-butadiene structure is preferably used. The polymer latex in the image forming layer is preferably incorporated by >=50 wt.% of the whole binder, while the polymer latex in the protective layer is preferably incorporated by >=80 wt.% of the whole binder.
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