HP 20/700 - Manual (Page 180)

Appendix A 9840 Drives and Tape Cartridges 179
Appendix A
Maintaining 9840 Cartridges
Make it a practice to visually inspect your tape cartridges when loading or
removing them from your tape library. Taking a few minutes to check the
condition of your cartridges will lower the risk of repeated failures and help
ensure uninterrupted backup.
For general precautions when using tape cartridges, see
page 144 . In
addition, do not apply more than one label onto the tape cartridge, as extra
labels may cause cartridges to jam in the tape drive.