It’s the press.

Using Cold-Set presses vs. Heat-Set reduces the amount of VOC's put into the air by 98%.

Heat Set Inks need heaters to "cook" the ink into the paper. Large ovens then "cook" off the high levels of VOC's emitted from these inks.

Coolers are then used chill the paper.

Cold Set inks require none of the excessive energy or expel Volatile Organic Compounds (VOCs) into the atmosphere.