Blue streak down side of papers from colour printer

[Jskid]

I've got an Infoprint 1534 that is putting a thin blue streak down the left side of all pages. Someone told me they empty the waste canister when this happens, is that right? I'm not very knowledgeable about printers. There's what appears to be a "waste canister" on the left side which comes out and is full of dark coloured fine dust. Do I dump this out? Any direction is greatly appreciated.

 

[St1ckM4n]

I guess so. Waste is waste! Printers can do funny things when they aren't configured correctly. I'd say that dust is rubbing on each page as it comes out.