| 摘要 |
PURPOSE:To obtain a low-cost copying material capable of forming a high density image by development as low as 90-130 deg.C and excellent in storage stability of an unexposed stock, by using a specified color developing adjuvant for a thermodevelopable diazo copying material. CONSTITUTION:A used color developing adjuvant is a guanidine derivative, such as 0.1-10mum particle diameter 1,3-N-dipentadecylguanidine, represented by the general formula shown in which R<1>, R<2> are each 4-24C alkyl, alkenyl, or optionally substituted phenyl or cyclohexyl or morpholino. A diazo compound, such as 4-morpholino-2,5-dimethoxy-benzenediazonium chloride.zinc chloride, a coupling component, such as 2,3-dihydroxynaphthalene, and said adjuvant in an amount of 0.1-20pts.wt. per 1pt.wt. diazo compound are used to form a photosensitive layer for use in athermodevelopable diazo copying material. |
