申请人:AGFA-GEVAERT
naamloze vennootschap
公开号:EP0416174A1
公开(公告)日:1991-03-13
Method for the production of direct-positive images by image-wise exposing a light-sensitive silver halide material comprising a support and an internal latent image-type silver halide emulsion layer and developing said exposed material in the presence of at least one development nucleator and density-increasing amounts of a compound chosen from the class consisting of formic acid, oxalic acid, glyoxylic acid, or salts of these and/or of a compound chosen from the class consisting of polyethylene glycols, with a hydroquinone-type developing solution having a pH not higher than 12.0 and comprising less than 25 g per liter of a hydroquinone and 5 to 100 g per liter of at least one alkanolamine.
用于生产直接正像的方法,其方法是将光敏卤化银材料按图像顺序曝光,该材料包括一个支撑层和一个内部潜像型卤化银乳剂层,并在至少一种显影核剂和一种选自甲酸、草酸、乙醛酸或其盐类的化合物和/或一种选自聚乙二醇类的化合物的密度增加剂的存在下,用pH值不高于12.0的对苯二酚型显影液对曝光的材料进行显影。0 ,每升含氢醌少于 25 克和至少一种烷醇胺 5 至 100 克。