My printer started this about a month ago. It has been happening at least once a day. The printer will print maybe a third of the job then stop, the lcd screen reads "now processing". We let it sit for awhile but never starts to print. This is happening even when doing multiple prints of the same job. Will print 5 in a row then the next will have the problem. Job log only shows unknown print error. I usually shut off printer and then resend job. Any suggestions on what is going on?