Maya Trading has developed and started sales of its pretreatment agent to improve the concentration of ink-jet printing using reactive dye ink. The name of the agent is COUPLER C-70(special agent).

To show the improvement in concentration, two images, one pretreated only with sodium alginate (image 1) and the other pretreated with sodium alginate with the special agent COUPLER C-70 added (image 2) are compared for color concentration below. As shown in the images below, the color concentration of reactive dye ink is significantly improved in the one pretreated with sodium alginate with the special agent COUPLER C-70 added compared to the other one pretreated only with sodium alginate.

Comparison in concentration of reactive dye ink
Image 1 Only with sodium alginate	Image 2 With sodium alginate + 3% COUPLER C-70

The price of sodium alginate has been rising recentry. Therefore, if the usage of sodium alginate needs to be decreased, combined sodium alginate and CMC's ARCOTT-C1000 in a ratio of 7 to 3 with the special agent COUPLER C-70 added can be used as a pretreatment agent for ink-jet printing, and it is still effective in improving the color concentration.

The images below show a comparison in the color concentration of reactive dye ink when the specimen is pretreated with sodium alginate + ARCOTT-C1000(7:3)(Image 3) and when pretreated with sodium alginate+ ARCOTT-C1000(7:3)+ COUPLER C-70 added(Image 4). The color concentration shown in the one pretreated with odium alginate+ ARCOTT-C1000 (7:3) + COUPLER C-70 is obviously deeper than the other.

Comparison in concentration of reactive dye ink
Image 3 With sodium alginate + ARCOTT-C1000 (7:3)	Image 4 With sodium alginate+ARCOTT-C1000 (7:3) +3% COUPLER C-70