Planographic printing plate precursor and stack thereof
AssigneeFUJIFILM Corporation
InventorsHiromitsu Yanaka, Shigeo Koizumi, Hisao Yamamoto
Life of this patent
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Abstract
The present invention provides a planographic printing plate precursor, including: a support; and a photosensitive layer containing a polymerizable compound; an oxygen barrier layer; and a protective layer containing a filler (preferably an organic resin particle), the layers being formed in this order on the support. The present invention also provides a stack of planographic printing plate precursors, produced by stacking the planographic printing plate precursors with the photosensitive layer side outermost layer and the support side rear surface of the adjacent plate precursor in direct contact with each other.
Claims11
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/m2.day at 25° C. and 60% RH.
Dependencies are inferred from the claim text.