| 摘要 |
A colored image or pattern formed of one or more colored hydrophilic colloid layers is produced on a permanent support by transferring onto such support in the presence of an aqueous liquid from a temporary support carrying the same, an unhardened colored hydrophilic colloid layer containing a photosensitive iron (III) complex which yields iron (II) ions on exposure to active electromagnetic radiation, exposing the thus-transferred colloid layer while in a substantially dry state to imagewise modulated active electromagnetic radiation, treating the exposed layer with an aqueous liquid comprising hydrogen peroxide or containing dichromate ions so as to effect hardening of the exposed regions of the colloid layer, and removing the nonexposed regions of such layer from the permanent support by washing with an aqueous liquid, these steps being repeated in sequence for each colored colloid layer transferred to the permanent support to constitute the ultimate colored image or pattern.
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