| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-sensitive lithographic printing plate master which can be printed by mounting directly in a printer without treating after exposure and in which both a sensitivity and a plate wear resistance are made compatible. SOLUTION: The heat-sensitive lithographic printing plate master comprises (1) an ink acceptive layer, (2) a hydrophilic layer containing a colloidal particle- like oxide or hydroxide of at least one element selected from the group consisting of beryllium, magnesium, aluminum, silicon, titanium, boron, germanium, tin, zirconium, iron, vanadium, antimony and a transition metal and (3) a hydrophilic overcoating layer having a dry weight of 0.05 to 0.20 g/m<2> on a support in such a manner that at least one of the ink acceptive layer, the hydrophilic layer and the hydrophilic overcoating layer contains a photothermal conversion agent. |
