An objective is to provide a planographic printing plate material
exhibiting excellent developability, printing durability, together with
excellent oxygen-shielding layer adhesion and moisture dependence after
exposure. Disclosed is a planographic printing plate material possessing
a support provided thereon, a photosensitive layer, wherein the
photosensitive layer comprises (A) at least two binder polymers
comprising different glass transition points (Tg) from each other, (B) a
polymerizable ethylenic double bond-containing compound, and (C) a
photopolymerization initiator.