Thermosensible plate material for forming lithography and method for preparing the same, liquid thermosensible plate material for forming lithography, and lithography

Abstract

A heat sensitive type plate material for forming lithography comprising a substrate ( ) and, formed thereon, a heat sensitive layer ( ), which in turn comprises a hydrophilic polymer ( ) having a Lewis base moiety, lipophilic part forming particles ( ) which form a lipophilic part on the surface of a plate through the change caused by heat, and polyvalent metal oxide particles ( ), the lipophilic part forming particles ( ) and the polyvalent metal oxide particles ( ) being dispersed homogeneously in the heat sensitive layer ( ). The plate material requires no developing process on forming a plate, and can form a lithography which has not only high mechanical strength, but also high printing durability, and further can be prepared with no significant increase of production cost.