In version 24, the "Delete old document print images" job (J30903) will be automatically started on upgrade.
This means that when you upgrade to version 24 and on every subsequent upgrade, a new job definition of "Delete Old Print images” type will be created if it does not already exist. This job will be activated by default and run automatically during server idle periods.
Further information about J30903 "Delete old document print images" can be found here:
To learn more about Jobs, please follow the link below: