Disclosed is a process of manufacturing a planographic printing plate from a planographic printing plate material comprising a support and provided thereon, at least one of an image formation layer and an ablation layer, the process comprising the steps of imagewise exposing the planographic printing plate material, and developing the exposed planographic printing plate material by supplying printing ink containing at least one of a polymerizable monomer and a polymerizable oligomer to the exposed planographic printing plate material.