I’m printing out the date and time on recording start (printout on recording start). An old date and time are printed out on recording start. What should I do?

If you stop recording during printout, the data being printed out remains in the printout buffer, and printout resumes the next time recording starts. Wait until the printout finishes, or clear the printout buffer.
There’s no operation for clearing the buffer for printout on recording start, but you can turn OFF the main power to the recorder to clear it.