| 摘要 |
<p>Multicolored diazotype copies are produced by (a) exposing a light sensitive diazotype material contg. at least one diazonium salt, (b) heating a layer of a coupler which can be volatilised ro sublimed by heating and is in contact with a definite part of the light sensitive diazotype material, these operations beings effected simultaneously or in the sequence (a)A right arrow (b) or (b) right arrow (a), and (c) developing the exposed light sensitive material in the presence with a smaller coupling velocity under development conditions thant eh coupler which can be volatilised or sublimed by heating.</p> |
