A method for forming an image, which comprises subjecting a photosensitive layer
of a photosensitive lithographic printing plate having a photosensitive layer comprising
a photopolymerizable composition formed on a support surface to scanning exposure
with a laser light having a wavelength in a range of from 650 to 1,300 nm, developing
an image, and then further subjecting the photosensitive lithographic printing
plate having the developed image to whole image exposure with a light exposure
energy of from 1 to 70 times larger than the light exposure energy at the time
of the laser light scanning exposure.