I decided to call some paper companies near me. Found one that recycles 10,000 tons of paper sludge a year. I figured they could help or at least lead me to someone who could.
Sure enough, I got two leads for printers and a basic education on the story behind vegetable based inks. Seems they use 5% linseed oil by-product and the other 95% is still pertroleum based. That’s the only way to get the ink to dry. However, a soy based ink is 80% soy and a much better option.
I was overjoyed when one of the printers could match my color choice with soy ink and was able to print on 100% post-consumer card stock.
Just keep in mind that soy based inks are a bit lighter and you may want to consider a heavier font but overall, I am totally pleased and proud of my new business cards.