A method for preparing a lithographic printing plate is disclosed, and said method
comprises the steps of imagewise light-exposing to infrared radiation, a presensitized
plate for use in making a lithographic printing plate, said presensitized plate
having an image-forming layer which comprises an IR-absorbing agent, and developing
the light-exposed plate with an alkaline liquid developer comprising a polyhydric
alcohol-type alkylene oxide adduct.
