Printing sleeves (carrier sleeves) give greater productivity and flexibility by using pre-mounted plates for quick changeovers. These are very effective for short-runs, repeat jobs and design alterations since the sleeves can be taken off press and stored with the plates mounted on the sleeves. Sleeves that serve solely as carrier rolls have imaged plates mounted to sleeves offline, which are then installed onto cylinders at the print station using compressed air to expand the sleeves for positioning.