pixma printer ix6850

Hi all, I'd appreciate some help. I recently have noticed that when I'm printing black images, there is a very faint - but noticeable blue hue around the edges (as seen in photo below) I've taken the printer apart and deep cleaned the printer heads and it's still doing it. Any other...

Hi, I have a Canon Pixma iX6850. I am using this printer to print images/pictures but using the genuine canon inks are costly. After some research, I found out CISS for printers. I am wondering if they are reliable for picture printing and is there any CISS system for Pixma iX6850 and good ink...