I've just about £100 on Canon Printer with you via Amazon. I put in today a Black 525 for my iX6550 printer and the printed picture and text have turned out to be appalling. The printed text has turned out blue and has only printed a few letters in each word and those poorly. I printed out a census image and the black surround turned out to be stripes of alternate light and darek blue. The printing was also poor. I've only ever used Canon own inks and reproduction is usually excellent. I think I will dump this lot from you and return to quality ink. Frank Haylett frankhaylett973@gmail.com.