Abstract: A printing method comprising: imagewise exposing a lithographic printing plate precursor comprising a support and an image recording layer being removable with a fountain solution or a combination of a printing ink and a fountain solution and loading the exposed lithographic printing plate precursor on a plate cylinder of a printing press, or loading the lithographic printing plate precursor on a plate cylinder of a printing press and imagewise exposing the loaded lithographic printing plate precursor, supplying at least a fountain solution comprising a compound represented by the formula (I) defined herein to the exposed lithographic printing plate precursor so as to remove an unexposed area of the image recording layer; and performing printing.

Abstract: A dampening water composition for a lithographic printing comprising an adduct compound of ethylene oxide and propylene oxide to ethylenediamine, which compound has a weight-average molecular weight of from 500 to 1500. The dampening water composition can be used in printing job without requiring a high degree of skill, and is capable of replacing a conventional dampening water composition using isopropyl alcohol, in various continuous water supply-type printing machines.

Abstract: A printing method comprising: imagewise exposing a lithographic printing plate precursor comprising a support and an image recording layer being removable with a fountain solution or a combination of a printing ink and a fountain solution and loading the exposed lithographic printing plate precursor on a plate cylinder of a printing press, or loading the lithographic printing plate precursor on a plate cylinder of a printing press and imagewise exposing the loaded lithographic printing plate precursor, supplying at least a fountain solution comprising a compound represented by the formula (I) defined herein to the exposed lithographic printing plate precursor so as to remove an unexposed area of the image recording layer; and performing printing.

Abstract: A dampening water composition for a lithographic printing comprising an adduct compound of ethylene oxide and propylene oxide to ethylenediamine, which compound has a weight-average molecular weight of from 500 to 1500. The dampening water composition can be used in printing job without requiring a high degree of skill, and is capable of replacing a conventional dampening water composition using isopropyl alcohol, in various continuous water supply-type printing machines.

Abstract: A concentrated dampening water composition comprising an organic solvent having a solubility of 1 to 10% in water at 20° C., which composition comprises at least one selected from the group consisting of maleic acid and a salt thereof. The concentrated dampening water composition is stably solubilized, in spite of the existence of an organic solvent having a low water-solubility therein, and said composition does not have problems of foaming and deterioration of printing properties.