| 摘要 |
PURPOSE:To obtain a copying material with which image formation is fast and of which the image does not fade with UV rays, etc. by consisting a surface reforming layer of an aminoacryl oligomer resin and forming a photosensitive layer contg. at least either of diazonium salt and beta-naphthoic acid coupler and contg. further silica and PVA resin. CONSTITUTION:The surface reforming layer of the diazo copying material having the photosensitive layer on the surface reforming layer of the diazo copying raw paper having the surface reforming layer consists of the aminoacryl oligomer resin and the photosensitive layer contains the diazonium salt and at least one kind of the beta-naphthoic acid coupler expressed by the formula (a) or (b) and contains further the silica and PVA resin. The substrate may be any raw paper for diazo consisting esentially of generally cellulose. The resin of the surface reforming layer is the aminoacryl oligomer having 20,000-50,000mol.wt. and is of the emulsion type having 40-50% solid content. The thickness of the surface reforming layer is preferably 3-50mum. |
