| 摘要 |
PROBLEM TO BE SOLVED: To obtain a block copy sheet for a lithographic printing plate which prevents surely the plate elongation and positional slippage of the lithographic printing plate on a plate cylinder of a printing machine, thereby enables application of the lithographic printing plate using a material other than metal as a substrate to multicolor printing and printing of a large number of sheets, and has excellent durability even under severe working conditions. SOLUTION: The block copy sheet for lithography has an indented form provided at least on one surface of the substrate having an initial modulus of 350 kgf/mm2 or above, and constituted mainly of an integrated resin which contains a composite of a resin containing a bond of particles of particle sizes 1-100μm and metal atoms, which are connected through the intermediary of an oxygen atom or a nitrogen atom, and of an organic polymer containing a radical which can form a hydrogen bond to this resin.
|
