6620 Printer says no paper when I have paper

[Canonuser27]

 MG6620 a few months old, about every 2nd or 3rd time I try to print or if printer not used for a day or so, I get a Printer has no paper in tray error when in fact I have paper it the tray. Paper is registered and positioned correctly in tray as per instructions . Anyone else and is there a fix?  

[Michael]

Hello.

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[olverafamily]

Hello Canon,

I am printing 160+ 5x7 borderless invitations on 60lb paper. After inserting a full stack of paper, and confirming the size and paper quality, the printer continuously fails to pickup the 5x7 sheets. 

After removing and re-inserting the papertray, press ok on the printer prompt. The printer is then able to take on paper for about 1-3 sheets.

I have opened all doors and inseptected for jams. I also have done at least 3 cleanings.  

Please advise if the following should be attempted to fix the error. 

I am still under warranty, please advise what are the steps to invoke my warranty with canon usa.

Thank you support.