Most classes of dyes are used for various types of printing. The dyes used for printing are the same as those used for dyeing but these are used for printing are the same as those used for dyeing but these are used in the form of Pastes. If mordents are necessary, the fabrics are treated with mordent solution before being printed.
Good fastness properties are of utmost important in printing.
Of the various dye classes, the vat, reactive, napthol and disperse colours will provide the needed fastness properties for most purposes.
Pigment dyes are mainly used for printing and are given utmost importance.
All these dyes are fixed to the fiber by means of resins that are very resistant to laundering and dry cleaning.
Vat and reactive dyes are generally used for cotton prints.
Basic colours mixed with tartar emetic and tannic acid will generally produce cheap prints.
Acid colours are used for printing silk fabrics.
Wool is printed with acid (or) chrome dyes.
Fabrics of Manmade fibers are generally Printed with disperse and Cationic dyes.
The choice of dyes used for printing depends the purpose for which the goods will be used and the fibers involved in the fabric.
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