Device for making damping solution by reducing surface tension of water used for offset printing method, which is lithographic printing method
OwnerMitsuru Takeiinventor
Life of this patent
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Abstract
A water treatment system for supplying dampening water for wet offset printing comprises a flow path through which water can pass; a magnetic treatment device for magnetically treating the water passing through the flow path; and a photocatalytic device for photocatalytically treating the water passing through the flow path.
Claims12
A water treatment system for supplying dampening water for wet offset printing, comprising:
- a flow path through which water can pass;
- a magnetic treatment device for magnetically treating the water passing through the flow path;
- and
- a photocatalytic device for photocatalytically treating the water passing through the flow path.
A method for wet offset printing, comprising a dampening step for supplying dampening water to a printing plate, an inking step for extracting ink from an ink supply section and supplying the ink to the printing plate, a step for transferring the ink deposited on the printing plate to a blanket and a step for transferring the transferred ink from the blanket to a paper,
- wherein magnetically and photocatalytically treated water, containing no isopropyl alcohol or etch solutions, is used as the dampening water.
A print printed onto a paper surface by wet offset printing, wherein ink on the print and the paper surface contains no isopropyl alcohol or etch solution-derived components and wherein the dot gain of the ink on the print is from 2 to 5%.
Dependencies are inferred from the claim text.