Patent ID: 7741005
Filing Date: 2010-06-22
Classification: B41C

Abstract:
1. A planographic printing plate precursor comprising: an aluminum support; and a photosensitive layer including a polymerization initiator, a polymerizable compound and a binder polymer; an oxygen barrier layer; and a protective layer including a filler, the layers being formed in this order on or above the support, wherein the filler is organic resin particles, the volume average particle diameter of the filler is in a range of from 1 to 20 μm and the content of the filler is in a range of from 0.1 to 20% by mass with respect to the total solid content in the protective layer; wherein the protective layer further includes a binder polymer that is a polyvinylalcohol and the content of the binder polymer is in the range of from 45 to 95% by mass with respect to the total solid content in the protective layer; and wherein the oxygen permeability of the oxygen barrier layer is 0.5 to 50 ml/m