Hi all. I recently purchased a Canon Pixma MP560 off of amazon and I've been having some issues with it, mainly the PGBK ink. When I used it the first time the black seemed very faded but I figured it was because I was using draft mode. My next print (draft mode), however, ended up being this:

A little concerned, I did a nozzle test print and got this:

No PBGK! But cartridge is in! No flashing lights on the printerhead!
I ran through the simple clean maintenance on the printer and printed a test print again. PGBK was back now. So I think to myself that I fixed the problem and I go merrily printing again. Well, the 6th page of my next document comes out like this:

I do a deep clean this time around and print another document, and it does the same thing about 5 or 6 pages in.
Can anyone help me with this? I'd really rather not have to do a cleaning routine every 5 pages so I can get some black ink on my prints.

A little concerned, I did a nozzle test print and got this:

No PBGK! But cartridge is in! No flashing lights on the printerhead!
I ran through the simple clean maintenance on the printer and printed a test print again. PGBK was back now. So I think to myself that I fixed the problem and I go merrily printing again. Well, the 6th page of my next document comes out like this:

I do a deep clean this time around and print another document, and it does the same thing about 5 or 6 pages in.
Can anyone help me with this? I'd really rather not have to do a cleaning routine every 5 pages so I can get some black ink on my prints.