A method for making a lithographic printing plate is disclosed which
comprises the steps of: (i) providing a negative-working,
heat-sensitive lithographic printing plate precursor comprising a support
having a hydrophilic surface or which is provided with a hydrophilic
layer and a coating provided thereon, the coating comprising an
image-recording layer which comprises hydrophobic thermoplastic polymer
particles and a hydrophilic binder, wherein the hydrophobic
thermoplastic polymer particles have an average particle size in the
range from 45 nm to 63 nm, and wherein the amount of the hydrophobic
thermoplastic polymer particles in the image-recording layer is at least
70% by weight relative to the image-recording layer; (ii) exposing the
coating to heat or infrared light, thereby inducing coalescence of the
thermoplastic polymer particles at exposed areas of the coating; (iii)
developing the precursor by applying an aqueous alkaline solution,
thereby removing non-exposed areas of the coating from the support,
wherein the aqueous alkaline solution has a pH .gtoreq.10 and comprises a
surfactant.