Method for producing printed matter
AssigneeToray Industries, Inc.
InventorsYuichi Tsuji, Takejiro Inoue
Life of this patent
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Abstract
The present invention aims to provide a method of producing a printed matter that shows suppressed scumming in planography. A method of producing a printed matter, the method including the steps of: allowing a dampening water to adhere to a hydrophilic layer of a planographic printing plate having at least the hydrophilic layer and a heat sensitive layer; allowing an ink to adhere to the heat sensitive layer; and transferring the ink adhering to the heat sensitive layer to an object to be printed; wherein the pH (A) of the ink and the pH (B) of the dampening water are both from 1 to 6.5.
Claims20
A method of producing a printed matter, the method comprising the steps of:
- providing a planographic printing plate having disposed thereon a hydrophilic layer and a heat sensitive layer disposed on the hydrophilic layer;
- providing dampening water to adhere to the hydrophilic layer;
- providing an ink to adhere to the heat sensitive layer;
- and
- transferring the ink adhering to the heat sensitive layer to an object to be printed;
- wherein
- the ink comprises a resin having an acidic group, and a polyfunctional (meth)acrylate having a hydroxyl group;
- and
- the pH (A) of the ink and the pH (B) of the dampening water are both from 1 to 6.5.
Dependencies are inferred from the claim text.