My 1280 is messing up every sheet of paper that it prints on. There are small
areas of stray ink that look like hairlines ... they could almost pass for fine lint stuck to the surface of the paper (usually near the edge of the image area). But it's ink.

I'm assuming something has ink on it that shouldn't, but I don't know what to
look for.

I also figured that if a bit of ink spilled, the problem woud go away when the ink dried. but this hasn't been the case. The problem started last week (on my first day of printing in several weeks) and persists several days later.

I'm using piezography warm neutral inks with the CIS system bought from inkjet mall.

Any thoughts?