Still no decent response to this original post. Just happened to me again - ink level unknown, and had to change the ink to get my printing working again. Moderator asking the same questions that have already been answered previously in the thread. I...
Did you ever get a decent response to your question? I have the same issue, which is very frustrating - seems to be little online help. My printer (Pixma Pro 100s) was working fine, and then suddenly one of the ink slots was saying 'level unknown'. T...
