Ink composition, inkjet recording method, printed material, method for producing planographic printing plate, and planographic printing plate

摘要

There are provided an ink composition including a polymerization initiator, a polymerizable monomer and a phosphoric acid group-containing polymer having a weight-average molecular weight in a range of 10,000 to 30,000; an inkjet recording method using the ink composition; a printed material recorded by the inkjet recording method; a method of producing a planographic printing plate using the ink composition; and a planographic printing plate obtained by the method of producing a planographic printing plate.