I just finished printing 45 Tri Fold brochures, 15 DVD's and 15 Dvd covers for my daughter's basketball team using these cartridges in my ip4000. They look great. Cover had a team picture and a basketball graphic. Tri folds were printed on plain paper and looked good. The dvd were verbatim whites. The covers I used Royal Brite Professional satin photo paper from Sam's club. Very happy i switched to these cartridges. According to alotofthings, they have formulabs ink. I may try refilling now.