| 摘要 |
<p>A heat-sensitive pre-sensitized plate is exposed to light and developed using an alkaline solution containing surfactant and salt, to form a lithographic printing plate. The pre-sensitized plate has a substrate, a lower layer containing a water-insoluble and alkali-soluble resin, and an upper heat-sensitive layer having water-insoluble and alkali-soluble resin and an infrared absorption dye. A heat-sensitive pre-sensitized plate is exposed to light, and developed using an alkaline developing solution containing surfactant and salt, to form a lithographic printing plate. The surfactant is chosen from anionic surfactant and/or ampholytic surfactant. The salt is chosen from alkali metal salt and/or salt of ammonium cation. The pre-sensitized plate has a substrate, a lower layer and an upper heat-sensitive layer formed on lower layer. The lower layer contains a water-insoluble and alkali-soluble resin. The upper layer contains water-insoluble and alkali-soluble resin and an infrared absorption dye. The upper layer exhibits an elevated solubility with respect to alkaline aqueous solution, during heating.</p> |
