WE have a Phaser 850 and a Phaser 8200 solid ink printer and I know that using compatable non Tektronix ink stix can ruin the print head. I'm wondering if anyone knows if there are any problems using non Tektronix toners in a Phaser 6250 Color Laser printer. We use compatable toners in our HP LasrJet 4000 (black & white) all the time with no problem.