| 摘要 |
A process for forming a colloid relief image on a substrate, comprising the steps of: (a) exposing to actinic light a sheet structure comprising a substrate having coated on one surface thereof a first layer comprising a colloid material capable of being tanned when contacted by oxidized silver halide developer, and coated over the first layer a second layer comprising a photographic silver halide emulsion, the emulsion containing substituted gelatin which is substantially resistant to tanning by the oxidized silver halide developers; (b) developing exposed sheet structure with oxidizable silver halide developers; and (c) washing the sheet structure with warm water, whereby all of the second layer is removed together with portions of the first layer which have not been tanned.
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