| abstract |
The present invention discloses a method of making a planographic printing plate, involving: exposing to light having a wavelength of 750 to 1,400 nm a planographic printing plate precursor having on a support a photosensitive layer containing an infrared absorbent, a polymerization initiator, a polymerizable compound, and a binder polymer, and a protective layer in that order; and developing a planographic printing plate exposed in a developing solution substantially without heating and washing, wherein the developing solution contains an antigelling agent selected from the group consisting of monoalcohol compounds and monoketone compounds. |