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      1. kingswood printing ink Co.,Ltd.
           
         
         
         
        Five examples of printing inks
         
        Five examples of printing inks
        EXAMPLE 1 
        Preparation of printing inks 
        A mixture of 4 kg of a first yellow pigment (arylamide Yellow 156), a second yellow pigment (Jaune Diaryl GRE 2101) and 0.3 kg of a hydroquinone-containing antioxidant paste (HP 5025 ex SPCI) were mixed with into a mixture of 36 kg of Varnish II and 7 kg of Varnish III, and then ground on a three-roll mill. There were added to the resultant dispersion 17 kg of Varnish I, 12 kg of Varnish II, 3 kg of anti-setoff paste, 5 kg of a micronised wax dispersant (Poliwax 33).
        EXAMPLE 2 
        Production of offset printing inks
        8 Kg of a blue pigment (Alkali Blue SR 1118), 4 kg of a black pigment (Printex Black 35), 14 kg of a black pigment (Printexx Black 45) and 0.3 kg of antioxidant paste (HP 5025) were dispersed into a mixture of 33 kg of Varnish II and 13.5 kg of Varnish III in a three-roll mill. A mixture of 13.7 kg of Varnish I, 2.5 kg of anti-setoff paste, 4.4 kg of micronised wax (Poliwax 33), 1 kg of micronised wax (PC 843) and 1 kg of litho additive (Optilith 4) were mixed into the resulting dispersion followed by 1 kg of mixed driers and 3 kg of manganese drier (Soligen Managanese 6% LS5X). 
        EXAMPLE 3
        Production of sheetfed offset inks
        16 Kg of Cyan pigment (Cyanine Lutetia J500) and 0.3 kg of antioxidant paste (HP 5025) were dispersed, on a three roll mill, into a mixture of 37 kg of Varnish II and 12 kg of Varnish III. There were then mixed into the dispersion 19 kg of Varnish I, 3 kg of anti-setoff paste, 4 kg of micronised wax (Poliwax 33), 1 kg of micronised wax (PC 843) and 1 kg of litho additive (Optilith 4). EXAMPLE 4
        Production of Magenta Ink 
        18 Kg of pigment (Rubis Lithol D 4568 DD) and 0.3 kg of antioxidant paste were dispersed, on a three roll mill, into a mixture of 34 kg of Varnish II and 15 kg of Varnish III. There were mixed into the dispersion 18.2 kg of Varnish I, 3 kg of anti-setoff paste.
        EXAMPLE 5 
        The offset inks of examples 5 to 8 were printed on Maine Club 115 gm stock using a 4 colour Heidelberg MO press fitted with OCS 72 blankets and an Alcolor damping unit. The fountain solution was Vegra Blue 3300 which contained 10% isopropyl alcohol and had a pH of 5.0. The press was run at speeds of up to 8000 impressions an hour, and at least 3000 sheets were printed. Offset behaviour on the press, lithographic performance, setting time and print quality were all good.
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