Printer errors

I have a Lexmark X85. There are times when it prints out
the page I want to print and then other times it wont
print, it says problems communicating with the printer so
Ill click cancil and then the status bar comes up
Printing-Off Line. I am always on line when I use my
printer but it seems like maybe it depends on what window
I have open I think. Do I have to be online and a certain
program opened or Window before my printer prints? This
is a brand new all in one printer.