User Activity

I printed a job and it successfully printed.  A few minutes later I tried to print another job and got this error.  I have taken the paper out and put it back in but I still get the error message
I ran out of black ink so I went and purchased a new ink cartridge, installed it, error message remains that the ink cartridge is empty.  Returned the ink cartridge and got a new one, installed it, same error message.Seems highly unlikely to have two...