| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition of humidification liquid capable of preventing an oxidation fouling, i.e. a problem characteristic of a planographic printing plate using an aluminum plate as a support. SOLUTION: (1) The composition of humidification liquid contains a condensate of aromatic sulfonic formalin and a phosphonic acid compound. (2) The composition of humidification liquid contains a condensate of aromatic sulfonic formalin and a copolymer of acrylic acid with maleic acid, or poly-α-hydroxyacrylic acid. COPYRIGHT: (C)2005,JPO&NCIPI
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