Follow these steps to reset your ink levels on your HP C3180:
Step 1: Turn on your printer and allow it to warm up.
Step 2: Remove the power cord from the printer.
Step 3: Count to 20.
Step 4: Press the “cancel” button and the “start colour copy” button while you plug the power cord back into the printer.
Step 5: Allow the printer to turn on again and reset it. Wait until it has warmed up and you can start using it again.
If this does not work, there is another way that you can do it. This is a lengthier process and it was made for the entire HP series, rather than a specific printer but it might just come in handy. Watch the process being done here: