| 摘要 |
PURPOSE:To obtain the titled substrate having a good stacking and print-fixing properties after a developing treatment by incorporating an antielectrification agent of an ion conductive substance or an electron conductive substance to a polyolefin layer formed on a back surface of the titled substrate, thereby specifying a surface electric resistance of the polyolefin layer. CONSTITUTION:The antielectrification agent is used in such an amount that the surface electric resistance of the polyolefin coating layer is <=10<10>OMEGA, preferably, <=10<9>OMEGA. As the use amount of the agent for obtain prescribed surface electric resistance depends on the kinds of the polyolefin and the agent, said amount is not specified, but is 0.1-1.0wt% in the ion conductive substance, and 5-30wt% in the electroconductive substance. When the surface resistance of the polyolefin layer on the back surface of the substrate is >=10<10>OMEGA, a fogging pattern due to an electric discharge in the take-out of a roll of the developing process generates, thereby unabling to use said substrate to the substrate for a photographic printing paper. Thus, the polyolefin resins contg. various kinds of the antistatic agents are coated on the back surface of the titled substrate by a laminating method. |
