| 摘要 |
PURPOSE:To provide treatment liquid which contains no cyanide, a pollutant at all, and is capable of having instantaneous nonsensitizing capability and printing without fouling of a background under a single run through a processor by containing tannic acid or its derivatives and aluminium polyhydroxide compound. CONSTITUTION:The derivatives of tannic acid are gallic acid of galotannin, etc. The range of density is 5g/l-100g/l in tannic acid or its treatment liquid. Aluminium polybydroxide compounds are water-soluble aluminium hydroxide salt, etc. which stably contain basic high polymer multi-nuclear condensed ions such as [Al6(OH)15]<3+>, [Al8(OH)20]<4+> and [Al13(OH)34]<5+>. The range of density in a treatment liquid is 0.5g/l-10g/l. In addition to the above components, a proper amount of organic and inorganic acids, basic hydroxide as pH regulator, glycerine, rubber arabic, etc. as wetting agent and phenol, etc. as antiseptics can be added to the treatment liquid. |
