Lithographic printing plate precursor

摘要

The present invention concerns a lithographic printing plate comprising an aluminum substrate having a surface-roughened shape comprising small pits having a distinct average opening size and a specific ratio of an average depth to the average opening size, an image-recording layer being a lipophilic image-recording layer not comprising a hydrophilic binder resin and comprising hydrophobic fine polymer particles undergoing combination by heat, a light-to-heat converting agent and a water-insoluble compound having fluidity at 50 DEG C, a hydrophilic film having a heat conductivity of 0.05-0.5 W/mK, and an overcoat layer comprising a water-soluble resin.