User Activity

I fed a sheet of labels into the rear tray.  They jammed.  I can see the top of the sheet, but it will not move. first thing I did was turn off the printer.   How do I clear this or have I created a boat anchor?  Can anyone help?  Thank you
Pixma IX 6820 will print a sheet showing all colors when I ask it to nozzel check black.  It's not printing black correctly and is just wasting all the other ink colors.  Is this a common issue?thanks