Waterless planographic printing plate precursor and production method thereof
AssigneeFuji Photo Film Co., Ltd.
InventorsTsumoru Hirano, Koji Sonokawa
Life of this patent
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Abstract
A waterless planographic printing plate precursor which has a support member, a light-to-heat conversion layer for converting laser light to heat, and a silicone rubber layer. The light-to-heat conversion layer is contains at least one kind of polyurethane having at least one carboxyl group, and at least one light-to-heat conversion substance.
Claims21
A waterless planographic printing plate precursor comprising:
- a support member;
- a light-to-heat conversion layer for converting laser light to heat;
- and
- a silicone rubber layer,
- wherein the light-to-heat conversion layer contains at least one polyurethane having at least one carboxyl group, and at least one light-to-heat conversion substance.
A method of producing a waterless planographic printing plate precursor comprising the steps of:
- providing a light-to-heat conversion layer on a support member, the light-to-heat conversion layer including at least one polyurethane having at least one carboxyl group, and at least one light-to-heat conversion substance;
- and
- forming a silicone rubber layer on the light-to-heat conversion layer.
An image recording process comprising a step of exposing laser on a waterless planographic printing plate precursor comprising:
- a support member;
- a light-to-heat conversion layer for converting laser light to heat;
- and
- a silicone rubber layer,
- wherein the light-to-heat conversion layer contains at least one polyurethane having at least one carboxyl group, and at least one light-to-heat conversion substance
- so as to allow the light-to-heat conversion layer at exposed portions to react and to cause a reduction in an adhesive strength between the support member and the light-to-heat conversion layer having the silicone rubber layer thereon.
Dependencies are inferred from the claim text.