THERMOSENSITIVE PLATE MATERIAL FOR LITHOGRAPHIC PLATE FORMATION, PROCESS FOR PRODUCING THE SAME, COATING LIQUID, AND LITHOGRAPHIC PLATE

摘要

A thermosensitive plate material for lithographicplate formation according to the present invention includesa substrate (1) and a thermosensitive layer (2) formedthereon. The thermosensitive layer (2) includes an organicpolymer (4) containing lipophilic portion forming particles(3). In the thermosensitive layer (2), a surface portion(21) having a thickness of 0.1 µm or more does not containthe lipophilic portion forming particles (3) but contains ametal oxide (5). The surface portion (21) includes ahydrophilic organic polymer (41), which has been cured withthe metal oxide (5). A portion (22) of the thermosensitivelayer (2) on the substrate side contains the lipophilicportion forming particles (3). The organic polymer (42)constituting the base portion (22) need not be thehydrophilic organic polymer.