I am having trouble printing even though the printer shows up fine. Is there a printer queue that may be backed up/jammed?

I have been printing from this iPad in the past with no problem. Suddenly I can't get to print. I have 2 printers on different WiFi. I can see each printer when I am on that WiFi but it won't print. I select the printer and then it is greyed out once selected. Is there a printer queue that might be jammed?